| Patents for E21C 35 - Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or (6,127) |
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| 12/26/1978 | CA1045071A1 Hydraulic mining apparatus and method |
| 12/19/1978 | US4130319 Mining machines |
| 12/19/1978 | CA1044712A1 Wedge arrangement for removably affixing a work tool or work tool holder to a base member on mining machinery and the like |
| 11/28/1978 | US4127303 Coal mining method at a long-walled pit face of the coal mine |
| 11/07/1978 | US4123848 Block profile gauge |
| 10/31/1978 | US4122682 Methods of and apparatus for applying roof mats to mine workings |
| 10/24/1978 | US4121618 Hydraulic ramping circuit for control valve |
| 10/17/1978 | US4120535 Scoop-belt miner |
| 10/17/1978 | US4120534 Apparatus for controlling the steering mechanism of a mining machine |
| 10/17/1978 | US4120390 Crossover dump and conveyor advancer |
| 10/10/1978 | US4119350 Cutter drum |
| 10/10/1978 | US4119347 Coal plough having separately adjustable cutters and flexible fluid power and control lines therefor |
| 10/03/1978 | US4118072 Variable wall mining machine |
| 09/12/1978 | US4112680 Control systems and arrangements for mineral mining installations |
| 09/05/1978 | US4111489 Stacked mineral mining plows independently driven or coupled |
| 09/05/1978 | US4111488 Method for cutting minerals and cutting machine |
| 09/05/1978 | US4111487 Underground mining machine with longwall guidance system |
| 09/05/1978 | US4111374 Commodity conveying means |
| 09/05/1978 | CA1037974A1 Mining method and apparatus |
| 08/22/1978 | US4108495 Guides for mineral mining machines |
| 08/22/1978 | US4108494 Cutting machine |
| 08/01/1978 | US4104592 Remote control of a mobile underground machine, particularly in a mine |
| 08/01/1978 | US4103974 Cable carriage and spill-plate housing assembly for a mining machine |
| 07/25/1978 | US4102550 Mining method and apparatus |
| 07/18/1978 | US4101318 Cemented carbide-steel composites for earthmoving and mining applications |
| 07/11/1978 | US4099785 Method and apparatus for supporting the roof of an underground mine working |
| 07/11/1978 | US4099782 Control system for a mineral mining installation |
| 07/11/1978 | US4099781 Apparatus for automatically shifting the conveyor at the pit face in the coal mine |
| 07/04/1978 | US4098538 Earth working machine having independent tools and roof engaging bridge |
| 06/27/1978 | US4097091 Method and apparatus for securing mining machines employed on inclined or steep seams |
| 06/13/1978 | US4094611 Securing means for machine parts |
| 06/13/1978 | US4094549 Process for hydraulically mining coal employing a cutting monitor and a breaking monitor |
| 06/06/1978 | US4093309 Method of and apparatus for controlling advance of underground armored conveyors |
| 05/30/1978 | US4091692 Bit holder |
| 05/23/1978 | US4090736 Detachable cab construction for mining machines |
| 05/23/1978 | US4090601 Mining machine conveyor and apparatus for controlling the tension thereon |
| 05/09/1978 | US4088371 Boom stabilizer for an underground mining machine |
| 05/09/1978 | US4088370 Haulage arrangements for mineral mining machines |
| 04/18/1978 | US4084856 Self-retaining sleeve and bit |
| 04/18/1978 | US4084855 Water-driven air pumping and dust-suppressing apparatus |
| 04/18/1978 | US4084751 Self-propelled material storage and feeding vehicle |
| 03/21/1978 | US4079999 Method and apparatus for mining |
| 03/21/1978 | US4079997 Photoelectric method and device for control of a mining machine along a bed of mineral |
| 03/21/1978 | US4079796 Cutting machine and augering tool |
| 03/14/1978 | US4078452 Drive systems for mining apparatus |
| 02/28/1978 | US4076318 Cutter bit assemblies for coal ploughs |
| 02/28/1978 | US4076316 Continuous mining machine with laterally movable cutter drum member |
| 02/28/1978 | US4076315 Dust abatement device and method of dust abatement |
| 02/07/1978 | US4072355 Fluid supply duct and pickup for mining machines |
| 02/07/1978 | US4072349 Steering of mining machines |
| 01/24/1978 | US4070063 Dividing cutting machine |
| 01/17/1978 | US4068897 Replaceable cutting bit holder assembly |
| 01/17/1978 | US4068894 Mining machine cowl assembly |
| 01/17/1978 | US4068893 Apparatus for controlling water spraying operations in mineral mines |
| 01/10/1978 | US4068088 Underground mine equipment |
| 01/10/1978 | US4067620 Rack-driven mining machine with pivotal guide shoe |
| 01/10/1978 | US4067619 Longwall machine guide with detachable cover plate |
| 12/27/1977 | US4065185 Point-attack bit |
| 12/27/1977 | US4065167 Safety enclosure for mining machines |
| 12/20/1977 | US4063782 Long wall mining apparatus guide structure |
| 12/20/1977 | US4063781 Apparatus for loading material |
| 12/13/1977 | US4062595 Automatic face transfer linear cutting rotary head continuous mining machine and method |
| 12/06/1977 | US4061398 Hydraulic mining apparatus and method |
| 11/08/1977 | US4057294 Wedge arrangement for removably affixing a work tool or work tool holder to a base member on mining, road working or earth moving machinery, and the like |
| 11/08/1977 | US4057260 Device for connecting the bits with the cutting head of a drift advancing machine or the like |
| 10/25/1977 | US4055367 Longwall machine with captivating bracket |
| 10/18/1977 | US4054321 Track-mounted shoe-supported inclining mining machine |
| 09/20/1977 | US4049318 Mining machine with cam-operated water jet pump |
| 09/06/1977 | US4046431 Water lubricated bearing assembly for mining machine |
| 09/06/1977 | US4046424 Continuous mining machine with hinged cutter guide extensions |
| 09/06/1977 | US4046060 Hydraulic control systems for use with mining apparatus |
| 09/06/1977 | US4046058 Control systems and arrangements for use in mineral mining installations |
| 08/30/1977 | US4045089 Apparatus for controlling the position of a mining machine |
| 08/30/1977 | US4045086 Pumpable product hydraulic mining apparatus and method |
| 08/30/1977 | US4045083 Longwall mining machine with haulage motor sensed pressure controlled rail brake |
| 07/26/1977 | US4037876 Tightening arrangement for longwall mining machine cable and conveyor |
| 07/26/1977 | US4037875 Full face miner |
| 07/05/1977 | US4033626 Method and apparatus for controlling a tunneling machine |
| 06/28/1977 | US4032195 Push-pull mining system |
| 06/14/1977 | US4029361 Longwall mining roof support for double deck machines |
| 05/31/1977 | US4026605 Mining tool |
| 05/31/1977 | US4026603 Mining installations |
| 05/31/1977 | US4026407 Conveyors for mineral mining installations |
| 05/24/1977 | US4025120 Feed system of a coal getting combine |
| 05/10/1977 | US4022286 Auger |
| 04/12/1977 | US4017032 Formation and transportation of slurried unconsolidated overburden |
| 03/29/1977 | US4014574 Mining machine having rectangular thrust transmitting conveyor column |
| 03/22/1977 | US4013320 Hook plough apparatus for longwall mining |
| 02/22/1977 | US4008921 Automatic excavating machine and method of operating the same |
| 02/22/1977 | US4008797 Mining machine conveyor with deflectible boom |
| 02/08/1977 | US4006935 Mining machines |
| 12/28/1976 | US3999651 Conveyors for use in mining |
| 12/14/1976 | US3997216 Apparatus for continuous mining |
| 12/07/1976 | US3995908 Hydraulic-mechanical coal mining combine |
| 12/07/1976 | US3995905 Method and apparatus for roof bolting and transferring mined material |
| 11/23/1976 | US3993355 Mining machine having pneumatic conveyance and cutter head floor driven about anchor |
| 11/23/1976 | US3993354 Multi-level hydraulic mining system |
| 11/16/1976 | US3992061 Mining cutter bit assembly |
| 11/16/1976 | US3992060 Conveying apparatus |
| 10/26/1976 | US3988578 Method and apparatus for controlling the steplessly variable cutting rate and feed rate of mining machines |