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Class Number: 299 Class Title: MINING OR IN SITU DISINTEGRATION OF HARD MATERIAL Subclass Subclass Number Title 1.05 AUTOMATIC CONTROL; SIGNALING OR INDICATING 1.1 .Ore/rock interface determination during cutting 1.2 ..On cutter head 1.3 .Of tunneling apparatus having a wall temporary support 1.4 .Of hard material disintegrating machines 1.5 ..Floor working 1.6 ..Sidewall working 1.7 ...Of advancing material handling means or roof support 1.8 ..Of rotary cutter with advance direction coincident to rotary axis 1.9 .Of material handling means 2 TUNNEL RECOVERY OF FLUID MATERIAL 3 IN SITU CONVERSION OF SOLID TO FLUID 4 .Input and output wells 5 .Dissolving or chemical reaction 6 .Melted material recovered 7 WITH SEPARATION OF MATERIALS 8 .Separation below surface of earth or water 9 .Material mined or excavated underwater 10 PROCESSES 11 .Stabilizing underground structure 12 .Mine safety 13 .Explosive 14 .Directly applying heat or vibration 15 .Forming blocks (e.g., quarrying) 16 .Breaking down by direct contact with fluid 17 ..Jetting (e.g., hydraulic mining) 18 .With material-handling 19 MINE LAYOUTS 20 EXPANSIBLE BREAKING-DOWN DEVICES 21 .Fluid-pressed element 22 ..Piston 23 .Wedge 24 ICE-WORKING DEVICES 25 .Relatively moving cutter 26 ..Reciprocating 27 ..Block-cutting type 28 ...Plural blades 29 HARD MATERIAL DISINTEGRATING MACHINES 30 .Remote control 31 .Stepper-type advance-causing means 32 ..Planer-type cutter 33 .With mine roof-supporting means 34 .Planer-type cutter 35 .Wire saw-type cutter 36 .Floor-working 37 ..Reciprocating cutter 38 ...Narrow channel-forming type 39 ..Rotary cutter 40 ...Freely rolling cutter 41 ...Vertical cutter axis 42 .Sidewall-workingg 43 ..With material-handling means 44 ...Undercutting, dislodging and conveying 45 ...Material handler enters cut with cutter 46 ...Rotary impeller 47 ..Driven flexible member causes advance 48 ...Cutter shiftable horizontally 49 ...Driver for member rotates about horizontal axis 50 ....Axis transverse to direction of advance 51 ..Horizontal cutter tooth orbit 52 ...Cutter shiftable horizontally 53 ..Vertical cutter tooth orbit 54 ...Cutter bodily shiftable horizontally 55 .Rotary cutter head with advance direction coincident to rotary axis 56 ..With material-handling means 57 ...Cooperates with laterally spaced heads 58 ..Machine follows cutter into opening formed thereby 59 ...Relatively driven cutters 60 ....Cutting area of one encircled by another 61 ...Radially adjustable cutting area 62 ...With percussive-type cutter 63 .Endless loop chunk serving cutter 64 .With material-handling means 65 ..Undercutting, dislodging and conveying 66 ...Undercutter shiftable horizontally 67 ..Material handler enters cut with cutter 68 ..Rotary impeller 69 .Percussive-type cutter 70 ..Cutter shiftable horizontally 71 .Relatively shiftable cutters 72 .Shiftable to operate in vertical or horizontal cutter tooth orbit 73 .Cutter shiftable horizontally 74 ..Horizontal cutter tooth orbit 75 ..Shiftable vertically 76 .Cutter shiftable vertically 77 .Horizontal cutter tooth orbit 78 .Vertical cutter tooth orbit 79 CUTTER HEADS OR TEETH 80 .Adjustable cutting area 81 .Cleansing fluid passage 82 .Chain-type head 83 ..Plural teeth on single link 84 ..Nontracking arrangement 85 .Parts relatively moving during operation 86 ..Rolling tooth 87 .Helical cutting or conveying portion 88 .Plural teeth 89 ..Rotary head 90 ...Cutting direction common to rotary axis 91 .Tooth-mounting 92 ..Resiliently biased retaining means 93 ..Clamped tooth 94 .Percussive 95 MISCELLANEOUS