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Class Number: 400 Class Title: TYPEWRITING MACHINES Subclass Subclass Number Title 1 INCLUDING JUSTIFICATION OR QUADDING OF PRINT-LINE 2 .Including quadding of print-line 3 .By programmed-control-system 4 ..On auxiliary-record-program (e.g., tape, card, etc.) 5 ...Magnetic record 6 ...With error-correcting storage register 7 ...Including artificial or end-of line hyphen 8 .By using "no-print" device 9 .By interword or intercharacter spacing 10 ..Variable carriage-feed mechanism 11 ..Carriage slidable relative to its carriage-rack 12 ..By interword spacing only 13 ...Including plural space-bars for different spacings 14 .By typing line on stretchable medium 15 .Including justification indicator 16 FOR TYPING OR FORMING CONTINUOUS OR DISCONTINUOUS LINE (E.G., BY "LINER") 17 .Including programmed-control-system 18 .By scriber (e.g., pen, pencil, etc.) or with scriber guide 19 ..For writing in script 20 ..Rotatable disc scriber 21 .Responsive to carriage movement 22 .Underscoring concurrently with character imprinting 23 FOR TYPING ON FLAT RECORD-MEDIUM OR AGAINST FLAT PLATEN 24 .For typing on a book 25 ..Including a type-head (e.g., cylinder, disc, etc.) 26 ..Against cylindrical backing 27 ..Including adjustment of typewriter relative to book (e.g., to compensate for book thickness) 28 ..Including adjustment of book support relative to typewriter (e.g., for top or bottom of book, etc.) 29 .For typing on flat blueprint or drawing (e.g., "platenless" typewriter) 30 .For typing on carton or package 31 .By multidirectional movement of typewriter structure (e.g., "Elliot-Fisher" structure) 32 .Bottom-strike typewriter including type-bar action or bar platen or anvil platen 33 .Top-strike typewriter including pivoted type-bar 34 .Including carriage-return mechanism 35 .Including case-shift by shifting platen 36 .Including ribbon-feed mechanism 37 .For typing on manifold set (e.g., with type-die, etc.) 38 ..Including feeding of wide carbon paper transverse to feed of record-medium 39 ..Including spool for roll of carbon paper 40 ..Including clamp or guide for carbon paper 41 ..Including adjustment of platen perpendicular to its surface 42 ..Including aligning and feeding manifold set 43 .Including feed of tally strip 44 .Including line-spacing mechanism 45 ..Platen shifted for line-spacing 46 ..Including adjustment of line-space distance or increment 47 ..Including disengagement of line-spacing mechanism 48 .Work support (e.g, sheet or card holddown or guide, sheet-size platen, etc.) 49 .Collating-table attachment 50 INCLUDING DELAY MEANS FOR PREVENTING MALFUNCTION IN POWERED TYPEWRITER 51 .Delay of sequential character rate in programmed-control typewriter 52 .Delay by storage of next character to be imprinted 53 INCLUDING ADJUSTMENT MEANS TO COMPENSATE FOR WEAR 54 SAFETY SWITCH OR CONDITION-RESPONSIVE-CUTOFF SWITCH FOR ELECTRICALLY POWERED TYPEWRITER 55 INCLUDING ADJUSTMENT FOR OPTIMUM PRINTING PLANE 56 .Responsive to thickness of record-medium 57 .In accordance with the number of sheets of record-medium 58 .By adjustment of platen relative to carriage 59 .By adjustment of carriage (e.g, carriage-guide rollers) 60 ..Via adjustment of case-shift linkage 61 INCLUDING CONTROL OF FORMAT AND SELECTION OF TYPE-FACE BY PROGRAMMED CONTROL-SYSTEM (E.G., INPUT TYPEWRITER) 62 .Including means for responding to input program or incoming signals and providing output program or signals representing typing operations, (e.g, output typewriter) 63 .Including editing or revision system 64 .Including right-hand margin control system 65 .Including typing of graphical representations 66 .Including baseplate attachment with electromagnets for input or output operations 67 .Separate interrelated programs 68 ..Including message writing (e.g, address program, form-letter program, etc.) 69 .Type-face selection via magnetic program tape 70 INCLUDING SELECTION OF TYPE-FACE BY PROGRAMMED-CONTROL-SYSTEM OR BY REMOTE CONTROL 71 .Plural typewriters coupled for simultaneous operation (e.g., "master-slave" relationship) 72 .Including character-selection latches (e.g., for type-face selection) 73 .Including particular reader structure and operation 74 .Including error detection 75 .Including type-bar selection using mechanical program 76 INCLUDING CONTROL OF FORMAT BY PROGRAMMED-CONTROL-SYSTEM 77 TYPEWRITER CONTROLS OTHER INFORMATION RECORDER 78 .Typewriter controls apparatus used for accounting function 79 ..And a tape-punch or card-punch apparatus 80 .Typewriter (e.g, output typewriter) controls tape-punch or card-punch apparatus 81 ..And imprints the character represented by the punched code on the tape or card 82 INCLUDING PLURAL, INDEPENDENTLY SUPPORTED KEY-BOARDS, PLATENS, OR TYPE-SET ASSEMBLAGES 83 DISPLAYING TYPEWRITER-FORMED REPRESENTATION OF PRINT-LINE 84 .By projecting typed image on screen 85 ..Including transparent or transluscent record-medium 86 OPERATING BY SOUND 87 FOR OPERATION BY HANDICAPPED USER 88 POCKET TYPEWRITER 89 KEY REASSIGNMENT 90 .Electrically powered 91 STENOGRAPHIC TYPEWRITER 92 .Using common-letter type-face 93 ..Including plural type-faces mounted on carrier and movable for selection of type-face 94 .Electrically powered 95 LOGOTYPE TYPEWRITER (E.G., WORD TYPING) 96 .Including date-stamp type-face 97 .Including signature type-face 98 .Actuation of single key types plural characters 99 ..Characters typed simultaneously 100 PLURAL-KEY-ACTUATED TYPEWRITER (E.G., PERMUTATIVE KEY-BOARD) 101 .Having type-faces disposed on pivotable type-bars 102 .Having type-faces disposed on rotatable type-head 103 CODE-PRINTING TYPEWRITER (E.G., FOR PRINTING A PATTERN OR MARK) 104 .For typing and encoding 105 ..Including magnetic encoding 106 .Including coded ink (e.g., phosphorescent or color-coded ink, etc.) 107 .For coding by conductive mark 108 .For marking laundry 109 FOREIGN LANGUAGE TYPEWRITER 110 .Including Oriental lanugage 111 .Including Semitic language 112 ANNULAR TYPEWRITER (E.G., FOR TYPING AROUND CIRCUMFERENCE OF PLATEN) 113 .Including vertically disposed platen 114 .Platen axis horizontal and extending front-to-rear 115 .Powered Actuated 116 MUSIC-ROLL OR MUSICAL-NOTATION TYPEWRITER 117 .Musical-notation typewriter 118 TYPING BY OTHER THAN TYPE-FACE OR TYPE-DIE 119 .Electrographic or elelctromagnetic typing 120 .Thermal or hot-stamp typing (e.g, via gold ribbon) 121 .Character formed by plural-type components (e.g., "matrix" printer) 122 ..Multiple-point embossed character for blind "reader" (e.g., "Braille" character) 123 ..With means for exposing last-typed character 124 ..Wire-end components (e.g., dot-printer) 125 ..Line components 125.1 ...Character formed by parallel print bars 126 .Character formed by ink jet 127 TYPING TO PRODUCE EMBOSSED CHARACTER 128 .Character embossed or typed on nonplanar article (e.g., golf ball, toothbrush, etc.) 129 .By type-die mounted on carrier movable for selection of character 130 ..Including programmed-control-system 131 ..Electrically powered 132 ..Type-die reciprocable on carrier 133 ..On endless-band carrier 134 ..On rotatable carrier 134.1 ...Actuated by key-board control 134.2 ....Including type-die movable relative to carrier 134.3 .....With magazine for supply of record-medium plates 134.4 ...On manually held embosser 134.5 ....Including web supply of record-medium 134.6 ...Including web supply of record-medium 135 TYPING TO PRODUCE PIERCED CHARACTER 136 .Cutout character for stencil 137 .Check-protection character 138 ..By type-die mounted on carrier movable for selection of character 138.1 ...Electrically powered 138.2 ...On rotatable carrier (e.g., for scarifying elements, etc.) 138.3 ....Actuated by key-board control 138.4 ....Including plural-character type-die 138.5 .....And rotating contact with platen 138.6 ....For type-die including piercing or cutting elements 139 INCLUDING TYPE-SET-ASSEMBLAGE MOUNTED ON CARRIER AND RELATIVELY MOVABLE FOR SELECTION AND FOR IMPACT OF TYPE-FACE 140 .Including type-faces movable relative to type-face-carrier 141 ..Slidable type-faces mounted on reciprocable carrier 141.1 ...On rotatable or oscillatable carrier reciprocable along its axis 142 ..Slidable type-faces on rotatable carrier 143 ..Rotatable type-face carrier including type-faces on pivotable arms 144 ..Type-face-carrier including type-faces on flexible arms 144.1 ...Rotatable or oscillatable carrier 144.2 ....Carrier having coplanar flexible arms (e.g., "daisy" wheel, etc.) 144.3 .....Continuously rotated carrier 144.4 .....Manually rotated carrier 145 ..Type-faces on deformable type-face-carrier 145.1 ...Rotatable carrier 145.2 ....Cylindrical carrier 146 .Including endless-band carrier for type-faces 147 .Type-faces arranged in rectilinear row and selected by reciprocable movement 148 ..On rotatable carrier having plural rectilinear rows 149 .Plural type-heads mounted for selective individual type-head-imprinting movement 150 ..Type-heads arranged for selective individual imprinting movement away from coaxial rest position 151 ..Turret carrier for type-heads 151.1 ...Axis of turret carrier parallel to platen axis 152 .Type drum having multiple type-set-assemblages 153 .Imprint by movement of record-medium against type-face 154 ..By hammer impacting record-medium against type-face on type-head (e.g., type shuttle, etc.) 154.1 ...Including selection of type-face 154.2 ....Via pully and cord arrangement (e.g., summing displacements) 154.3 ....By shortest peripheral path 154.4 ....Via coded disc in electric or magnetic circuit (e.g, photoelectric) 154.5 ....Via stepping motor responsive to selection 155 ....Via electrical or electromagnetic means 155.1 .....Including plural-function actuation by electromagnet(s) 156 ....Via helical arrangement of projections 156.1 ....Via mechanically permutated bar(s), disc(s) or plate(s) 156.2 ....Via planetary gear arrangement 156.3 .....Including latch means 157 ...Including type-faces arranged along helical path(s) 157.1 ...Including particular structure of hammer(s) 157.2 ....Electromagnetically actuated 157.3 ....For variable impression (e.g., impact control) 157.4 ....Hammer(s) mounted on endless belt or in helical array 158 ..Including platen for moving record-medium against type-face and mechanism for feeding record-medium 158.1 ...Including moving and feeding by platen 159 ..Including platen for moving record-medium against type-face and mechanism for inking type-face 160 .Imprint by pivoting of type-head-carrier and type-head against record medium 161 ..Type-head-carrier movable on movable carriage 161.1 ...Including selection of type-face (e.g., on "golf ball" type-head) 161.2 ....Via gear train 161.3 .....Gears mounted on type-head and type-head-carrier 161.4 .....Including gear (e.g., rack) reciprocated by transmission mechanism 161.5 ....Via multiple cam surfaces 162 ..Type-head movable for selection of type-face 162.1 ...Via pulley and cord arrangement 162.2 ...Via shortest peripheral path 162.3 ...Via coded disc in electric or magnetic circuit (e.g., photoelectric) 163 ...Via stepping motor responsive to selection 163.1 ...Via electrical or electromagnetic means 163.2 ....Including electromagnetically actuated type-head movement toward record medium 163.3 ....Including plural-function actuation by electromagnet(s) 164 ...Via helical arrangement of projections 164.1 ...Via pneumatic actuation 164.2 ...Via setting elements actuating selector-command member(s) 164.3 ...Control arm connectd to selection gear and movable to engage key-lever actuated abutment 164.4 ...Via stop pins actuatable by key-board 164.5 ...Toothed member connected to selection gear and slidable by key-lever movement 164.6 ...Selection gear rotated by key-lever movement 165 ...Simultaneous rotation and translation of type-head by manually powered actuation (e.g., helical shift) 165.1 ...Via manually powered actuation other than by key-board (e.g, stylus selection) 165.2 ....Includinng type-head movable to print-point by actuator common to all type faces 165.3 .....Selection by rotatable dial 166 ..Including impact control 167 ..Including rebound control 168 ..Articulated-support joint 169 ..Detenting to fix type-head for imprinting 170 ..Including movable printing anvil within type-head 171 .Plural type-set-assemblages selectively movable from a storage station to a printing station 172 .Type-faces mounted on type chips and removable from storage for printing 173 .With means for exposing last-typed character 174 .Type-head per se 175 ..Detachable from carrier (e.g., interchangeable) 176 HAVING FLUID-PRESSURE POWER DRIVE 177 .Including pneumatic decoder for perforated tape 178 .For producing typewriter-control tape (e.g., perforated tape, etc.) 179 .For type-face selection or choice 180 ..Including key-board driven by external pneumatic source 181 ..By pneumatic actuation of type-face or type-bar 182 .For movement of carriage or platen 183 ..Including line-spacing 184 HAVING TYPEWRITER-CONTROLLED RECIPROCABLE ELECTROMAGNETIC DRIVE FOR PLURAL FUNCTIONS IN SAME TYPEWRITER 185 HAVING POWER-DRIVEN OPERATOR FOR PLURAL FUNCTIONS 186 .Via continuously rotated power roll selectively connected to operate 187 .Usable selectively (e.g., for powered or manual operation, alternative usable functions, etc.) 188 FOR TYPING ON REVERSE SURFACE OF RECORD-MEDIUM 189 .By simultaneous use of both surfaces of same ribbon 190 .By use of "carbon paper" 191 INCLUDING INTERPOSED INKING DEVICE (E.G., RIBBON) FOR RECORD-MEDIUM 192 .Moved by continuously rotating power drive intermittently applied 193 .Inking device handheld during typing 194 .Endless ribbon or cartridge therefor 195 ..Mobius strip 196 ..Including storage (e.g., in cartridge, etc.) of ribbon 196.1 ...Having ribbon stored in pleated form 197 .Renovation of used ribbon 198 ..With ink heater (e.g., for melting solid ink) 199 ..By discrete auxiliary band movable with ribbon 200 ..Selectively actuatable re-inker 201 ..Of multicolor ribbon 202 ..Renovator attachable to typewriter for replenishing ribbon ink 202.1 ...Attached to ribbon spool 202.2 ...And includes refillable chamber (e.g., reservoir) for liquid ink 202.3 ....And conveyor of discrete drops of ink 202.4 ....And re-inking roller 203 .Ribbon disposed within platen 204 .For typing plural copies simultaneously with ribbon(s) (e.g., duplicate typing) 205 ..Including holder for short length of ribbon 205.1 ...Holder movable to inoperative position on typewriter 206 ..Using plural ribbons (e.g., additional ribbon(s) 206.1 ...Including "carbon paper" ribbon 206.2 ...And ribbon holder movable to inoperative position on typewriter 206.3 ...On plural coaxial spools 206.4 ...On single spool 207 .Package for ribbon facilitating mounting of ribbon on typewriter (e.g., ribbon cartridge) 208 ..Package attached to typewriter 208.1 ...And includes separable assemblage of spools 209 .For bottom-strike typewriter 210 .For boldface typing 211 .Including mechanism for shifting ribbon laterally at print-point 212 ..Via electrically powered actuator 213 ..For impact of successive type-faces on one field of ribbon in path not parallel to longitudinal extent of ribbon (e.g., "zigzag", oblique, etc.) 213.1 ...Via ribbon vibrator 214 ..Plural ribbons shiftable laterally (e.g., by duplicate vibrators) 215 ..By ribbon vibrator 215.1 ...Including vibrator shiftable during use of nonfeed character key (e.g., for typing accent mark, etc.) 215.2 ...With retardation of vibrator return after type-face impact (e.g., with dashpot) 215.3 ...With elevation and holding of vibrator above print-point (e.g., to facilitate ribbon insertion) 215.4 ...With inactivation of vibrator (e.g., for cutting a stencil) 216 ...Including variable throw of vibrator 216.1 ....For diverse-field (e.g., plural-color) ribbon 216.2 .....With typewriter-controlled change of field 216.3 .....By movement parallel to print-line 216.4 .....Vibrator throw controlled via alternate pins selectively inserted in slots 216.5 .....Field selection by selectively positioned stop faces to limit vibrator movement 216.6 .....To compensate for case-shift 217 ..To shift impact path (e.g., during ribbon reversal) 217.1 ...By adjustable ribbon guide spaced from supply spool 218 .Ribbon-reversing mechanism 219 ..Including means responsive to depletion of ribbon supply 219.1 ...Including an electric switch 219.2 ...Including lever retained in spool by wound ribbon 219.3 ...Including senser for diameter of wound ribbon 219.4 ....Senser received in depression in core of spool 219.5 ...Including projection from ribbon 220 ..Alternative pawl-and-ratchet drive including ratchet directly connected to spool or spindle 220.1 ...Including a common pawl member (e.g.. double-toothed pawl) 220.2 ...Including member interposed in pawl drive path 221 ..Alternative gear drive including gear directly connected to spool or spindle 221.1 ...And gears mounted on ends of axially shiftable common shaft 221.2 ...And gears mounted on ends of pivoted common shaft 222 ..Alternative clutch drive including clutch member directly connected to spool or spindle 223 .Ribbon-feeding mechanism 224 ..For feeding ribbon angularly to print-line at print-point 224.1 ...Ribbon fed perpendicular to print-line at print-point 224.2 ....Ribbon is full-page wide 225 ..Including electrically powered drive means (e.g., solenoid, stepping motor, etc.) 226 ..For feeding ribbon partial character-space before impact and partial character-space after impact 227 ..For narrow carbon ribbon (e.g., carbon ink, "single use", etc.) 227.1 ...Ribbon destroyed after use 227.2 ...Or for alternatively used fabric ribbon 228 ..Including pin-feed-engaging ribbon 229 ..Mounted with movable type-face-carrier or type-head-carrier 230 ..With fast rewind of ribbon 231 ..With prevention of ribbon feed (e.g., for nontype operation, etc.) 232 ..Including feed at particular feed rate (e.g., "creep" feed) 233 ..Ribbon feed from supply only during carriage return 234 ..Including ribbon tensioner 235 ..Drive applied by means directly engaging ribbon in advance of takeup 235.1 ...Drive applied by pinch-roller couple 236 ..Drive applied directly to spool or spool spindle 236.1 ...By a pawl driving a ratchet on the spool or spindle 236.2 ...By a gear driving a gear on the spool or spindle 237 .Ribbon per se 238 ..Having leader portion (e.g., for threading, etc.) 239 ..With ribbon-reversing indicator or device on ribbon 240 ..Including differently pigmented fields 240.1 ...Including correction-material field 240.2 ...With prevention of bleeding between adjacent fields 240.3 ...Including fields arranged transversely to elongated dimension of ribbon 240.4 ...Including more than two fields 241 ..Particular ribbon material 241.1 ...Synthetic material 241.2 ....Wherein ink is entrapped in ribbon material (e.g., microcapsules, micropores, etc.) 241.3 ...Particular weave pattern 241.4 ...Including ink-impervious backing for ribbon 242 .Ribbon spool or mount therefor 243 ..Universally adaptable 244 ..Including ribbon-reversing indicator or device on spool or mount 245 ..Including magnetic retainer 246 ..Spool for full-page-wide ribbon 247 .Means auxiliary to ribbon mechanism (e.g., shield, guide, etc.) 248 ..Including guide for ribbon 248.1 ...Ribbon guide opening expandable to facilitate ribbon insertion 248.2 ....And typewriter-actuated closing of guide 248.3 ...Including electrical, magnetic, or pneumatic guide means 249 ..Including indicator for depletion of ribbon (e.g., bell, sign, etc.) 250 ..Including tool for inserting ribbon 251 CASE-SHIFT MECHANISM 252 .Including programmed-control system 253 .Including electronic control or code-bar control 254 .Controlled by typewriter-actuated mechanism 255 .Including plural case-shift mechanisms (e.g., for simultaneous or selective use) 256 .Actuated by toggle-linkage 257 .For case-shift by type-head (e.g., spherical type-head) movement 258 .Power-operated mechanism (e.g., for locking shift key) 259 ..For shifting platen 260 ..For shifting type-bar-segment 261 .Multiple-shift mechanism (i.e., for type-bar having three or more type faces thereon) 262 ..For shifting type-bar-segment 263 ..For shifting type-bar or type-face on type-bar 263.1 ...By pivoting type-face relative to type-bar 263.2 ...By rotating type-face relative to type-bar 264 .For shifting platen 265 ..Fore-and-aft (e.g., for top-strike or bottom-strike typewriter) 266 ..Mounted on pivotally movable platen carrier 266.1 ...With movement of platen out of typing position 266.2 ...Including adjustable counterbalance spring 266.3 ...Including a yieldable link (e.g., spring, etc.) 267 ..By depression of space-bar 268 .For shifting type-face or type-bar 269 ..By shifting type-bar or type-face on type-bar 269.1 ...By pivoting type-face relative to type-bar 270 ..Mounted on type-bar support (e.g., guide pin, type-bar-segment, etc.) 270.1 ...Ring hanger support 270.2 ...Including ball-bearing support 270.3 ...Including pivoted-lever support (e.g., cantilever spring, etc.) 271 .By choosing from one of a plurality of type-bars operated by a single key 272 .Including key attachment for case-shift 273 ..Operated by user's leg, (e.g., foot, knee, etc.) 274 .For locking case-shift mechanism in position (e.g., rebound lock, cam, etc.) 275 ..For locking platen in fore-and-aft position (e.g., by overcenter spring, etc.) 276 ..For locking shift-key lever in depressed position 276.1 ...By toggle-linkage 276.2 ...By means pivoted on shift-key lever 277 .Including limit stop (e.g., block, chain, etc.) 278 ..Including limit screw 279 CONTROL OF PRINT POSITION ALONG PRINT-LINE BY SIGNAL GENERATED BY PROGRAMMED-CONTROL-SYSTEM 280 .Program is indicia on auxiliary member 281 ..Member is punched tape or card 282 .Program is indicia on record-medium 283 CARRIAGE OR CARRIAGE-MOVING OR MOVEMENT-REGULATING MECHANISM 284 .For stopping carriage in tabular position (e.g., column-set positions) 285 ..In denominational positions 285.1 ...And column-set positions 285.2 ....Tab-rack stop intercepted by denominational-stop 285.3 .....Tab stops grouped in stepped fashion 285.4 ...With control of zero or space for decimal point 285.5 ...With reverse-direction movement of carriage 285.6 ...Helically mounted denominational-stop(s) 286 ...Shiftable denominational-stop(s) 286.1 ....Step-shaped denominational- or tab-stop(s) 286.2 ....Engaging movable tab-rack means 286.3 ...With latch or lock means 287 ..Column set by control of mutilated carriage-rack 288 ..Column set by control of tab-rack 289 ..Column set by control of tab stops or column stops or counter stops 289.1 ...Tab-stops grouped in stepped fashion 290 ..Forward or reverse tabulation 291 ..With impact cushion or rebound check 292 ..With control of carriage velocity 293 ..By multiple-pitch tab-racks or multilated gear 294 ..Stop-setting or stop-clearing mechanism 294.1 ...With stop magazine (i.e., for supplly of stops) 294.2 ...With key-locking mechanism 294.3 ...Drum-mounted tab stops 295 ...Stop setting by linear shift of tab stop or counter stop 295.1 ....Stop shifts horizontally from tab-rack 295.2 ....Stop shifts laterlly along tab-rack 296 ...Stop setting by movement of tab-rack 296.1 ....Tab-rack rotates about its axis 296.2 ....Plural tab-racks 297 ...Stop setting by partial rotation of tab stop relative to tab-rack 297.1 ...Stop setting by pivoting pawlike stop 298 ..Tab-stop or tab-rack structure per se 299 .With rotatable type wheel for repeat printing in response to carriage movement 300 .Key-actuated mechanism for nonfeed of carriage (e.g., "silent" key, locking carriage, etc.) 301 ..By disabling carriage-escapement mechanism 302 ..By key actuated independently of carriage feed 303 .For varying carriage feed 304 ..For kerning or overlap imprinting 305 ..By force-feed or screw-feed mechanism 306 ..Proportional to variable widths of imprinted characters 306.1 ...By settable elements (e.g., pins, bars, slides) 306.2 ...By ratchet-wheel and controlled pawl 306.3 ....Including multiple pawls 306.4 .....And multiple wheels 307 ...By ratchet rack and controlled pawl 307.1 ....Including multiple pawls 307.2 ...By cooperating toothed members (e.g., gear, segment, rack, etc.) 308 .Carriage backspace mechanism 309 ..Backspace proportional to variable width of imprinted characters 310 ..Including powered drive means 311 ..Including pawl and escapement wheel 312 ..Including pawl and escapement rack 313 .Carriage-return mechanism 314 ..With concurrent line-spacing 314.1 ...Using electromagnetic drive 314.2 ...For selected number of line-spaces 314.3 ...With disconnection of return by margin-stop 314.4 ...Initiated by user's leg or foot 314.5 ...Initiated by actuator adjacent key-board 314.6 ...By return-clutch means 315 ..Responsive to carriage position 316 ..Partial return (e.g., for start of paragraph, etc.) 317 ..Including power drive (e.g., electric, spring, etc.) 317.1 ...For bidirectional drive 317.2 ...By spring-driven motor 317.3 ...Powered via engagement of a clutch 318 ..Initiated by actuator adjacent key-board 319 .Carriage-feed mechanism (e.g., escapement, etc.) 320 ..For carriage on which a type-head-carrier is mounted 320.1 ...With concurrent movement of carriage for record-medium and carriage for type-head-carrier 321 ..With repeat spacing 322 ..By electric or magnetic power 323 ..Carriage-feed in two directions (e.g., continuous typing in two directions) 323.1 ...In selected direction (e.g., for Semitic language, etc.) 324 ..Word-space concurrent with typing of last character of word 325 ..By space-bar mechanism (e.g., separate connection to escapement) or paragraph-indentation key 326 ..With compensator for tilt of typewriter 327 ..For diagonal print-line 328 ..By force-feed or screw mechanism (e.g., direct drive, screw-biasing carriage, etc.) 328.1 ...Including pawl and toothed rack 329 ..Carriage escapement controlled by pawl 329.1 ...Means to ensure engagement of pawl at start of print-line (i.e., overbanking control) 329.2 ...Carriage-feed initiated and completed during depression of character key (e.g., "speed" or "reverse" escapement) 329.3 ...Pawl rocker spring regulating device 330 ...Via ratchet wheel connected to pinion and carriage-rack 330.1 ....And plural pawls 330.2 .....For half-drop escapement 330.3 .....Mounted on pivotable pawl carrier or rocker 330.4 ......Including pawl(s) fixed to rocker 330.5 .......And slidable pawl 330.6 .......Including pawl pivoted about axis parallel to rocker axis 330.7 .....Mounted on movable (e.g., rotatable, slidable) pawl carrier 330.8 .....Including particular structure of pawl (e.g., pivoted, unitary, with roller, etc.) 331 ....Including plural ratchet wheels 331.1 ....Including particular structure of ratchet wheel 331.2 ....Including cushioned escapement support (e.g., rocker, pawl buffer, etc.) 331.3 ....Including particular structure of mount for ratchet wheel (e.g., bearing, clutch, etc.) 332 ...Via toothed rack 332.1 ....And plural pawls 332.2 .....Mounted on pivtable pawl carrier or rocker 332.3 .....Mounted on movable (e.g., rotatable, slidable) pawl-carrier 332.4 .....Including particular structure of pawl (e.g., slidable, pivoted, unitary, etc.) 332.5 ....Including plural toothed racks (e.g., pivoted, etc.) 332.6 ....Including particular structure of rack (e.g., toothed, slidable, etc.) 333 ..Universal-bar or actuator therefor 333.1 ...Connected to actuator for another function 333.2 ...Adjustable 333.3 ...Actuated by type-bar or type-bar action 334 ..Carriage-feed-release mechanism 334.1 ...By disengagement of clutch between ratchet wheel and pinion 334.2 ...By disengagement of escapement pawl(s) 334.3 ....From carriage-rack 335 ..With particular connection to carriage (e.g., gear train, pulley and strap, etc.) 336 ..Spring-biasing carriage for feed 336.1 ...Torsion spring in rotatable barrel 337 .Carriage-retarder mechanism 338 ..Including governor responsive to speed or momentum 338.1 ...Using centrifugal force 338.2 ...Using inertial force retarder (e.g., flywheel, weight, etc.) 339 ..Using fluid or fluent-material retarder 340 ..Using frictional retarder (e.g., strap, disc, drum, etc.) 341 ..Carriage-buffer stop or rebound control 342 .Margin-regulator (e.g., adjustable margin-stop) mechanism 343 ..With intermediate margin-stop 344 ..With other typewriter function controlled by margin-stop (e.g., signal, line-space) 345 ...Carriage-arrest function (e.g., "overbank") 346 ...Print-line locking function 347 ..With multiple-pitch selector 348 ..With release of margin-stop 349 ..Conjointly set or centrally spring biased 350 ..On record-medium table or paper-finger 351 ..Margin-stop structure per se 352 .Carriage per se or guideway therefor 353 ..Including auxiliary carriage 354 ..Guideway or bearings for carriage 354.1 ...Guideway cooperating with ball bearings or roller bearings 354.2 ....Including bearing holder geared to carriage 354.3 ....Including respositionable guideway 355 .Means for repositioning carriage or platen thereon 356 ..To nonprint position 357 ..To detach carriage 358 ..To detach platen 359 HAVING TYPEWRITER-CONTROLLED RECIPROCABLE ELECTROMAGNETIC DRIVE FOR TYPE BAR ACTUATION IN SAME TYPEWRITER 360 .Including electromagnetic return of universal actuator 361 .Including actuator to complete depression of selected key or key lever 362 .Including universal actuator to actuate selected type-bar action 363 ..And individual solenoids to connect the type-bar action to be actuated 364 .Including individual solenoids to actuate the selected type-bar action 365 HAVING ROTATED POWER DRIVE INTERMITTENTLY APPLIED FOR TYPE-BAR ACTUATION 366 .Including jam-release means 367 .Interposed components driven by filter shaft 368 .For repeat-type action 369 ..With prevention of repeat typing 370 .Via continously rotated power roll 371 ..And oscillatable cam 372 ..And rotatable cam (e.g., single-lobe cam) 373 ...Including double-lobe cam 374 ..And friction leg (e.g., other than by cam) 375 ..Snatch roll 375.1 ...Including plural coaxial snatch disc 375.2 ...With control of impact force 375.3 ...With electromagnetic control of pawl 375.4 ...And star wheel 376 ..With control of impact force 377 .Via limited-rotation clutch 378 ..Plural cams clutched to drive shaft 379 .Via spring drive (e.g., spring-driven snatch roll) 380 ..Including individual spring for each type-bar action 381 ..Including reciprocable common actuator 382 .Via reciprocating common actuator 383 TYPE-BAR-ACTION MECHANISM OR TYPE-FACE ON TYPE-BAR OR TYPE-FACE INKER 384 .Spring drive for type-bar action 385 .With added-motion mechanism for type-bar near print-point 386 ..Including toggle-linkage 387 ..Including momentum accumulator 388 ..Including hammer, roller, or presser mechanism 388.1 ...Type-bar pivotable to vicinity of print-point 389 ..With power assist for mechanism 390 .With end-thrust mechanism for type-bar 391 ..Type-bar slidable on flat support 391.1 ...Driven by gear means 391.2 ...Driven by cam means 391.3 ...Driven by toggle-linkage 391.4 ...With power assist for mechanism 392 ..Including momentum accumulator 393 ..For top-strike or bottom-strike typewriter 394 .With type-bar pivot travelling during typing movement of type-bar 395 ..Type-bar pivot on longitudinally movable carriage in top-strike typewriter 396 ..With ink pad on type-bar rest 397 .With disconnection of type-bar action during movement thereof 398 .With accelerated (e.g., motion amplifying)type-bar action 399 ..By rolling contact between links 399.1 ...By key-lever rolling on fulcrum 400 ..By cam-engaging link 401 ..By breaking and straightening toggle-linkages 402 ..By breaking toggle-linkage (e.g., to pull type-bar to print-point) 403 ..By straightening toggle-linkage (e.g., to push type-bar to print-point) 404 ..Including adjustment of toggle-linkage anchor position 405 ..By type-bar connecting link 405.1 ...Including gear connection 406 ..By pin and slot connection 407 ..Including type-bar starter means 408 .For bottom-strike typewriter 409 ..Including simultaneous actuation of plural type-bars for simultaneous imprinting 410 ..With pivotally mounted platen carrier (e.g., for access, etc.) 411 ..Type-bar actuated by rack and gear 412 ..Including type-bar mounting arrangement 413 ..With type-face inker (e.g., ink-pad rest) 414 ..Including key or key-lever arrangement 415 .For top-strike typewriter 416 ..Including type-bars pivoted on both sides of, or above and across, platen axis 417 ..With type-face inker (e.g., ink pad, roller, etc.) 418 ..Type-bar pivoted by gear connection 419 ..Type-member or type-bar pivoted and rotatable (e.g., for selection of type face) 420 ..Type-bar pivoted by push link 421 ..Type-bar pivoted by cam 422 .Type-bar action 423 ..Including selectively disengageable type-bar action to render action inoperable 424 ..With type-face pivoted on type-bar for rolling contact with platen 425 ..Including jam-release means 426 ..Including type-bar return before release of key lever 427 ..Including yieldable link in type-bar action 428 ..Including means to limit type-bar movement 429 ..Type-bar pushed or pulled by hooklike cam 430 ..Bar pulled to print-point 430.1 ...By cam means (e.g., slotted cam, helix, etc.) 430.2 ...By toggle-linkage 430.3 ...With movable type-bar-segment 431 ..Type-bar moved to print-point by gear drive 432 ..Type-bar moved to print-point by cam means 433 ..Type-bar moved to print-point by toggle-linkage 434 ..Including connecting link or joint 434.1 ...Adjustable (e.g., in length, etc.) 434.2 ...Flexible (e.g., spring, strap, etc.) 434.3 ...Including connecting element (e.g., joint, etc.) 435 .Type-bar rebound preventer (e.g., via latch, brake, linkage, etc.) 436 .Type-bar return spring connectd to type-bar-action linkage 437 ..For impact control 438 ..With adjustment means (e.g., for "touch" control, ect.) 438.1 ...Including an indicator 439 ..Attached to type-bar or universal-bar 440 ..Attached to key lever (e.g., tension spring) 440.1 ...Compression spring 440.2 ...Cantilever spring (e.g., torsion, hairpin, etc.) 441 .Type-bar pivot support 442 ..For plural groups of type-bars 442.1 ...Having type-bars disposed on plural ring supports 442.2 ...Including type-bars pivoted on vertical pivot(s) (e.g., moved in horizontal plane) 443 ..Ring support 444 ..Type-basket laterally movable relative to platen and key-board 445 ..Type-bar-segment (e.g., wire journal) 445.1 ...With guide for movement of segment 445.2 ...Including hanger for individual type-bar 445.3 ....And bearing for type-bar 445.4 ...Interchangeable (i.e., easily removable) segment 445.5 ...With type-bar anvil 446 ..Interconnected (e.g., nested) support bearings 447 ..Ball-and-socket bearing for type-bar (e.g., universal joint) 448 ..Roller bearing or ball bearing for type-bar 448.1 ...Including plural bearings for each type-bar 449 ..Adjustable bearing for type-bar 450 ..Pin support for type-bar 451 ..Wire support for type-bars 452 .Type-bar structure 453 ..With type-face movable in plane of type-bar movement 454 .Type-bar rest or rest support 455 ..Including metallic material 456 .Type-bar or type-member guide structure 457 ..Including resilient means for energy absorption or kickback 458 ..Mounted on platen-carriage 459 ..For thrusted type-bar 460 ..Guide adjacent print-point 460.1 ...Including rollers or balls 460.2 ...Including pin or collar 461 ..Adjustable guide 462 .Type-member structure 463 ..Removable type-member 464 ..Rotatable on type-bar 465 ..Pivotable on type-bar 466 ..Type-face or type-die configuration (e.g.,reverse image, boldface, piercing, etc.) 467 .Dust guard for type-bar action mechanism 468 ..For type-bar bearing (e.g., shield on type-bar-segment) 469 .Attachment to type-bar for imprinting extra character 470 .Ink-impregnated type-face or inker for type-face 471 ..Including stationary ink pad for inking type-face directly 471.1 ...And a wick for feeding pad from reservoir 472 KEY-BOARD OR KEY LEVER-ACTUATING MECHANISM 473 .Including mechanism (e.g., auxiliary key-board) for activating keys 474 ..Electromagnetic key-board-drive mechanism 475 ..Operated by user's leg (e.g., foot, knee, etc.) 476 ..For actuating function key only 477 .Including means generating a signal for type selecting or other typing function 478 ..Via slidable code bars 479 ..Via electrical component (e.g., switch, stylus, etc.) in or with key-board 479.1 ...Capacitance-responsive switch 479.2 ...Electromagnetic-responsive switch 480 .Including control of key action (e.g., buffer, etc.) 481 ..By regulating key force or movement (e.g., key dip or stroke) 482 .For stenographic typewriter 483 .For Braille typewriter 484 .For foreign-language typewriter 485 .Key-board having multiple-character, multiple-movement keys 486 .Key-board arranged according to character location 487 ..Color-coded key-board 488 .Key-board including row of keys having different heights 489 .Key-board including keys grouped to facilitate positioning of typist's fingers 490 .Key-Cap or key-stem structure 491 ..Including cushioning means (e.g., yieldable surface) 491.1 ...Including underlying air cushion 491.2 ...Including spring supporting key cap or key stem 491.3 ....With sensory indicator (e.g., sound, tactile response, etc.) 492 ..Adjustable in plane of key(s) (e.g., to facilitate reach, rotatable, etc.) 493 ..Including character-bearing disc on key cap 493.1 ...Secured by encircling ring member 493.2 ....With slot for exchanging disc 494 ..Having raised or recessed character 495 ..Including means for mounting key cap or key stem 495.1 ...By spring means 496 .Key lever or space-bar mounting structure (e.g., dust guard, buffer, pivot, etc.) 497 WITH CONTROL OF "CARBON PAPER" FOR TYPING PLURAL SIMULTANEOUS COPIES BY SINGLE IMPRESSION (E.G., ON "MANIFOLD SET") 498 .Including prevention of full imprint on "carbon copy" record-medium 499 .On record-medium wound around platen together with carbon paper 500 .With means for causing slack in web of manifold set 501 ..By arcuate movement of carbon paper carrier 502 ..By clamp on carbon paper carrier 503 .By use of other than rectangular sheet carbon paper (e.g., disc, etc.) 504 ..Endless-band carbon paper 505 .By multicolor carbon paper 506 .With means to prevent creep (e.g., relative movement) between record-media 507 .Including means for creep feed of carbon paper 508 .Including spool or support for roll of carbon paper 509 ..Including a flat roll or core therefor 510 ..And guide for changing feed direction 510.1 ...Spool support shiftable to and from platen 511 ..Feed mechanism for feed from roll of carbon paper 511.1 ...Responsive to return of carriage 511.2 ...With retraction of carbon paper for reuse thereof (e.g., by slidable carrier) 511.3 ....Carbon paper rewound for retraction 511.4 .....By driving carbon paper roll directly from platen (e.g., by endless band) 512 ..And support for roll of record-medium 513 .Including relative movement between carbon paper and record-medium 514 ..Including positioning of auxiliary record-medium 515 ..Including front insertion of carbon paper or record-medium 516 ..By simultaneously advancing record-medium and retracting carbon paper 517 ..By means to arrest advance of carbon paper 518 ..Carbon paper carrier(s) respositionable relative to platen 518.1 ...Plural carriers disposed side by side for selective use singly or simultaneously 518.2 ...Plural carries for serial retraction of plural carbon papers 518.3 ...With means to imprint selectively on one or more media (e.g., by holding selected media away from print-line) 518.4 ...Including retraction of carbon paper and record-medium and subsequent advance of record-medium 519 ...Carbon paper carrier movable rectilinearly 519.1 ....With means to hold record-medium against retraction 519.2 ....Including means to reduce binding of carbon paper during retraction 519.3 .....Including lifting of platen for retraction of carrier 519.4 .....With guard over settable parts (e.g., denominational jacks, etc.) 519.5 .....With relative movement betweem record media (e.g., for condensed-billing, etc.) 519.6 ....With support or guiding or positive-driving structure for carrier (e.g., table, adjustable stop, etc.) 519.7 ...Carbon paper carrier on endless member 520 .Carbon paper holder (e.g., loading board, etc.) 521 FOR TYPING ON CARD IN CARD HOLDER 522 .Flexible holder fed around platen with single card 523 .On card pierced or indented to aid holding 524 .Holder movable responsive to case-shift 525 .Card holder carrier by platen 526 ..And actuated in response to platen rotation 527 ..With platen surface modified for card 527.1 ...Including card gripper on platen 527.2 ...Including axially extending slot or hollow in platen 528 ..Holder attached via detachable arms at ends of platen 529 ..Holder attached via pins on holder or via adhesive attachment 530 ..Holder attached via element (e.g., band) gripping platen periphery 531 .Including line-spacing of holder or card 532 ..Variable line-spacing (e.g., platen creep) 533 ..In a curvilinear path 534 ..By pinion and rack 535 .Including support engaging bottom edge of card 536 .Card holder mounted on typewriter frame 537 ..Including means enabling movement of card relative to holder 538 ..Transparent card holder 539 ..Including finger movable away from holding position 540 ...Spring urged to holding position 541 .Including a feed-roller 542 .Card holder mounted on platen-carriage frame 543 .Including gripper or means urging card against platen 544 .Backing for stencil cutting (e.g, celluloid strip, etc.) 545 FOR LINE-SPACING BY INCREMENTAL ROTATION OF PLATEN 546 .To facilitate condensed billing (i.e., by determining a desired limit or amount of retrograde or advance platen movement) 547 ..Including stop structure (e.g, traveling stop, etc.) 547.1 ...For arresting platen at limit of both retrograde and advance movement 547.2 ....By stop travelling in a rectilinear path 547.3 ....By lever or push-rod drive for platen 547.4 .....Via gear drive 547.5 ......Including lever on axis transverse to platen axis 547.6 ......Including relatively adjustable coaxial gear segments 547.7 .....Via pawl and ratchet wheel drive 547.8 ......With spring motor 548 ..With graduated scale (e.g., on drum periphery) 549 .Actuated by key on key-board 550 .For multi-incremental rotation (e.g., "platen sweep") 551 .For line-spacing in forward or reverse direction 552 .With "floating" platen 553 .Via line-space / carriage-feed-release actuator 554 .For facilitating even wear of platen surface (e.g., by irregular increments, etc.) 555 .By irregular increments of platen rotation (e.g., for adjustment of platen relative to its actuator, etc.) 556 ..Including disconnecting ratchet wheel from platen (e.g., declutching ratchet, etc.) 556.1 ...Via relatively displaceable pin and slot members 556.2 ...Via toothed ring and locking member(s) 556.3 ....Including pivotable locking member(s) 556.4 ....Including radially displaceable locking member(s) 557 ...Via ball or roller clutching member(s) 558 ...Via binding jaws gripping annular flange between jaws 559 ...Via friction plate members engageable by axial displacement (e.g., pressure plate, etc.) 559.1 ....Friction members have cooperating conical surfaces 560 ...Via frictional engagement of periphery of cylindrical member 560.1 ....Friction member(s) acting on inner periphery of drum 560.2 .....Pivotable member(s) 561 .....Expandable band or split ring 562 ..Including settable stops 563 ..Including plural detents selectively engageable with ratchet wheel 564 ..Including a drive member engageable with line-space ratchet wheel 564.1 ...Via displaceable detent 565 ..Detent-release structure 566 ...With friction brake for platen 566.1 ...With simultaneous disengagement of drive pawl 567 ..Including gear (e.g., differential gear, etc.) structure 568 .By electric-power drive 569 .By gear train (e.g., including a clutch) 570 .By double-cam drive 571 .By friction drive (e.g., including regulation of increments) 572 .By pawl and ratchet wheel drive 573 ..Including rectilinearly movable pawl 573.1 ...And resilient drive 574 ..Including pawl carrier coaxial with ratchet wheel 574.1 ...And means to regulate pawl engagement or drive 575 ..Including means to regulate pawl engagement or drive 575.1 ...By movable ratchet-wheel shield 575.2 ...By stop adjustable to limit movement of actuator 576 .Via foldable line-space actuator 577 .With means to prevent reverse rotation or ensure full increment (e.g., for "backlash" prevention) 578 SHEET OR WEB (E.G., RECORD-MEDIUM FEEDING MECHANISM 579 .Including skew correction responsive to position of sheet or web 580 .Including forming indicia on record-medium during typing to find next line to be typed 581 ..To find last-produced slit or hole or notch in sheet 582 .Including programmed-control-system for record-medium feed (e.g., on auxiliary record) 583 ..For web record-medium 583.1 ...Program on auxiliary-record tape 583.2 ...Program is indicia on rotatable disc or drum 583.3 ...Program is indicia on record-medium 583.4 ...Including plural speed record-medium feed 584 .Including feed of plural record media arranged side by side (e.g., fed independently of platen) 585 ..By divided platen 585.1 ...With positive clutch for simultaneous rotation of platen sections 586 .Including feed of tally strip record-medium (e.g., plural tally strips) 587 ..And feed of endless transfer medium 588 ..On plural-platen (e.g., divided platen) typewriter 589 ..With locking or interlocking mechanism (e.g., line lock, etc.) 590 ..Including feed varied for amount of tally strip on spool 591 ..Including tally-strip feed transverse to feed of main record-medium 592 ..Including feed independent of platen 593 ..With cutting or spring tensioning of tally strip 594 ..Including structure or mounting or adjustment of tally-strip roll 594.1 ...And roll for transfer-medium 595 .Including insertion of sheet from front of platen (e.g., for "condensed billing", via sheet guide, etc.) 596 ..Including feed responsive to presence of sheet 597 ..With subsequent line-spacing independent of platen 598 ..With digitally selected, typewriter-actuated feed to selected line to be typed (e.g., via "dialing" disc, etc.) 599 ..Insertion of sheet relative to other record-medium 599.1 ...With sheet-associating attachment (e.g., collating-table, etc.) 600 ..Via feed throat having gate (e.g., actuated by power, etc.) 600.1 ...With platen repositioned for sheet insertion 600.2 ...With feed-roller repositioned for sheet insertion 600.3 ....And sheet feed by additional feed-roller couple 600.4 ....Coincident to pivoting of sheet guide 601 ..With laterally movable sheet holder (e.g., having concurrent feed movement) 602 ..With sheet ejector 603 ..Via chute(s) or feed-roller couple (e.g., plural chutes) 603.1 ...Pivotable chute 604 ..Attachment to typewriter for converting to condensed-billing operation 605 .For feeding plural record media concurrently or selectively 606 ..Plural webs superimposed and aligned to each other during typing 607 ..Including movement of one record-medium relative to another 607.1 ...In lateral direction (e.g., lateral shift of web or sheet carrier) 607.2 ...By insertion of additional record-medium 607.3 ...With concurrent feed-roller and line-spacing control 608 ...With clamp for holding one record-medium stationary 608.1 ....Selectively engageable feed-rollers of feed-roller brakes 608.2 ...By auxiliary feed-roller or platen section (e.g., separate feed of sheets) 608.3 ...By retrograde movement of one record-medium 608.4 ...Including differential movement by separate drive means 609 ..Mount for plural web rolls 610 ..Including sheet-associating attachment (e.g., pin band-encircling platen) 610.1 ...With table or frame (e.g., collating-table) 610.2 ....Front collating-table with sheet-holding means (e.g., clamps) 610.3 .....Including pin-holding means 610.4 .....Including indicator 611 .For feeding web record-medium 612 ..Feeding web or sheet in perpendicular directions 613 ..With web supply or takeup or mount therefor (e.g., web cartridge, etc.) 613.1 ...Including insertion of leading edge of web 613.2 ...For folded or creased web (e.g., fan-fold web) 613.3 ....With web smoother 613.4 ....Holder for fan-folded web mounted to move with carriage 614 ...Including web rewind 614.1 ....Connected to platen drive 615 ...Mounted on typewriter having transversely moving carriage 615.1 ....Mounted to move with carriage 615.2 ...For feeding tape in direction of print-line (i.e., transverse feed) 616 ..By pin-feed means (e.g., reciprocating pin, etc.) 616.1 ...Including laterally adjustable bands (e.g., tractor feed, etc.) 616.2 ...Pin feed on endless band 616.3 ...Pin wheel (e.g., on platen cylinder) 617 ..By friction-feed means (e.g., reciprocating finger or gripper or pinch roller, etc.) 618 ..With web tensioning or braking 619 ..Including web guiding or aligning (e.g., laterally, relative to print-line, etc.) 620 ..Including web shifting to view print-line 621 ..With web cutter (e.g., tear bar, wire tool, etc.) 621.1 ...For longitudinal cut 621.2 ...And guage for tear-off length 622 .With holder for single sheet (e.g., clip, backing sheet, etc.) 623 ..Mounted on carriage (e.g., for extra-wide sheet, cylindroidal holder, etc.) 624 .For feeding sheet from stack or pack holder 625 ..And delivering to sheet receiver (e.g., by roller couple) 626 ..By engaging between flap and body of envelope 627 ..By pneumatic means 628 ..By reciprocating of oscillating member 629 ..By endless-band or rotating (e.g., feed-roller) member 630 .Including aligning of sheet edge prior to typing 631 ..Aligner moved to operate concurrently with disengagement of feed means 632 ..Including leading-edge aligner located past print-point 632.1 ...Adjustable leading-edge aligner 633 ..Side-edge aligner (e.g., adjustable, etc.) 633.1 ...On rear sheet table or apron 633.2 ....Adjustable aligner (e.g., with lock) 634 .Including friction-feed means (e.g., band) 635 ..By endless-feed band 636 ..By roller couple (e.g., rotatable pinch rollers, etc.) 636.1 ...With typewriter-actuated control of feed-roller position 636.2 ...Including intermediate drive means (e.g., gears) connecting feed-roller to platen 636.3 ...Including feed-roller having equalizing or pressure-adjusting means 637 ...Including lower feed-roller(s) (e.g., pressure roller, etc.) 637.1 ....Including concurrent control for disengagement of upper and lower feed rollers 637.2 ....Mounted on apron 637.3 ....Mounted on plural roller carriers 637.4 .....Including plural parallel carrier pivots 637.5 .....Including single carrier pivot intermediate front and rear lower feed rollers 637.6 ....Mounted on single carrier having pivot intermediate front and rear lower feed-rollers 638 ...Including feed or pressure roller mounted on "paper-finger" 639 ...Including upper feed-roller(s) (e.g, pressure roller, etc.) 639.1 ....Mounted on "paper bail" 639.2 .....Disengaged from platen by compound movement of bail (e.g., on double pivoted mount) 640 ...With cooperating scale 641 ...Feed-roller structure or brake or spacer therefor 642 .Including sheet guide (e.g., for sheet insertion, etc.) 643 ..Platen-encircling band 644 ..Sheet stripper (e.g., for preventing reentry) 645 ..Sheet holddown member (e.g., "paper-finger", end-of-page holddown, etc.) 645.1 ...With aperture or notch (e.g., for typing therethrough, etc.) 645.2 ...On or with erasing plate or signal or indicator 645.3 ...Movably mounted on movable finger carrier 645.4 ...Pivotally mounted holddown 645.5 ...Mounted in front of platen axis 646 ..Sheet table at delivery side of platen 647 ..Movable sheet table or apron (e.g., detachable, extensible, etc.) 647.1 ...Pivotable (e.g., fingerlike support) 648 PLATEN OR PLATEN-MOVING MECHANISM 649 .For movement of platen other than for line-spacing 650 ..Cylindrical platen adjustable to facilitate compactness 651 ..Cylindrical platen axially adjustable 652 ..Platen movment conjointly with type-face movement 653 ..By eccentric mounting for platen 654 .Character-size platen (e.g., anvil, disc, etc.) 655 ..Mounted on movable carrier 656 .Bar (i.e., line size) platen 657 ..Mounted on cylindrical member 658 .Semicylindrical platen 659 .Cylindrical platen 660 ..Detachably secured to platen carriage 660.1 ...By axially displaceable supporting shaft 660.2 ...By pivoted member overlying platen shaft 660.3 ...By disengageable platen sectors 661 ..With sound-muffling means 661.1 ...Including plural layers of varying hardness 661.2 ...Including cylinder containing fluent (e.g., fluid, etc.) material 661.3 ...Including cylindrical sections or rings (e.g., of character-space width) 661.4 ...Including a wound member 662 ..Including particular surface characteristic (e.g., translucent, pigment yielding, corrugated, of varying hardness, etc.) 663 LOCKING OR INTERLOCKING MECHANISM 664 .For interlocking plural functions or mechanisms 665 ..Plural carriage-moving mechanisms (e.g., escapement, tabulation, etc.) 666 ..Plural keys or key linkages (e.g., for type-face selection, etc.) 667 .Key-board lock using interlock mechanism 668 .Locking means actuated in response to a condition 669 ..Failure of power supply 670 ..End-of-page lock (e.g., responsive to preset condition) 670.1 ...Responsive to end-of-page sensor 670.2 ...Including lock for platen or line-space 670.3 ....By cam groove and follower 671 ..End of maximum typed line 671.1 ...Actuated by space-bar 671.2 ...Universal-bar lock (e.g, pivoted latch, slidable latch, etc.) 671.3 ....Actuated by paper-finger 671.4 ....Interposed component 672 ...Escapement lock 672.1 ...Type-bar lock 672.2 ...Key-lever lock (e.g., by hook on key-lever) 673 ..Coin-controlled lock (e.g., responsive to print-lines, time, etc.) 674 .For locking carriage in centered position (e.g., with shipping support) 675 ..And disengaging case-shift lock 676 .Key-board security lock (e.g., cover plate, etc.) 677 .For locking selected group(s) of keys 678 .For locking key in actuated position (e.g., to remove type-face from ink pad) 679 MEANS AUXILIARY TO TYPEWRITING FUNCTION 680 .Means for collapsing typewriter or support for record-medium or copy 681 ..By tilting typewriter (e.g., via collapsible legs, etc.) 682 ..By moving key-board relative to frame (e.g., into plural operating positions, etc.) 683 ..By moving carriage relative to frame 684 ..By moving type-bars relative to frame 685 ..Including typewriter built into carrying case 686 .Buffer (e.g., dashpot, of particular material, etc.) for movable typewriter element 687 ..Having non-impact movement 688 .Means for increasing typewriter noise 689 .Means for muffling typewriter noise 690 ..By sound-barrier enclosure for typewriter (e.g., by sound-absorbing material) 690.1 ...With viewing window (e.g., having reflection eliminator) 690.2 ....And externally protruding (e.g., key-board, etc.) operating means 690.3 ...With externally protruding operating means 690.4 ...Including means facilitating opening of enclosure 691 .Frame, casing, or support for typewriter 692 ..Having means facilitating interchange of parts 693 ..Housing structure 693.1 ...For ink-ribbon spool (e.g., spool cover, etc.) 694 ..Made of particular material (e.g., plastic, etc.) 695 .Means for correcting typing errors (e.g., by abrasive eraser, etc.) 696 ..By laser beam or adhesive-surface ribbon or chemical eradicator 697 ..By overprinting (e.g, with coated material) to cancel error 697.1 ...With drive for ribbon having coating thereon 698 ..With erasing table 699 ..With receptacle for refuse 700 ..With means for rubbing eraser over surface of record-medium 701 .Means for cleaning, or facilitating cleaning of, type-face 702 ..By contacting type-face (e.g., via type-face cleaner, brush, etc.) 702.1 ...Including means for moving brush 703 .Indicator means 704 ..For indicating typist's skill or needed adjustment 705 ..For indicating position of carriage along print-line 705.1 ...Of carriage for type-head-carrier 705.2 ...With word counter 705.3 ...By means driven from carriage (e.g., for indicating end of print-line, etc.) 705.4 ...Scale for facilitating tabulation 705.5 ...Scale for facilitating centering of print-line 706 ..For indicating position of line or end-of-page 706.1 ...By scale mounted on paper table 707 ...By means driven from platen cylinder 707.1 ....Drive initiated by detector of record-medium 707.2 ....Including relatively movable pointer and scale (e.g., rotatable or rectilinearly movable pointer) 707.3 .....Scale rotated by gear drive 707.4 .....Rotatable scale coaxial with platen cylinder 707.5 ....With line numbering 708 ...Including detector of record-medium 708.1 ....Having electrical contacts separated by record-medium 709 ..For aligning record-medium with print-point or print-line (e.g., for facilitating correction of error, etc.) 709.1 ...By transparent indicator 709.2 ...For indicating print-line alignment 710 ..Including page counter 711 ..Including a light 712 ..Including means producing an audible sound (e.g., plural tones, etc.) 713 .Attachment for shielding or screening record-medium or typewriter (e.g., against wind, etc.) 714 ..For screening key-board 715 .Attachment for guiding fingers or hands of typist (e.g., hand rest) 716 .Attachment for illuminating or viewing (e.g., prism, etc.) 717 .Attachment for holding an article (e.g., pencil, eraser, etc.) 718 ..Copyholder 718.1 ...Actuated by typewriter (e.g., to simulate line-spacing, for web copy, etc.) 718.2 ....With adjustment of line-spacing 719 MISCELLANEOUS * ****************************** * CROSS-REFERENCE ART COLLECTIONS * ****************************** 900 CHEMICAL-SYMBOL CHARACTER 901 CONTINUOUSLY ROTATING TYPE-HEAD 902 STEPPING-MOTOR DRIVE FOR WEB FEED 903 STEPPING-MOTOR DRIVE FOR CARRIAGE FEED 904 SUBSCRIPT OR SUPERSCRIPT CHARACTER