IPC 7 English version E21C 29/00-E21C 51/00

IPC ⁷ English version

E21C - E21C 27/46

E21C02900-E21C05100

SECTION E – FIXED CONSTRUCTIONS

E 21

EARTH OR ROCK DRILLING; MINING

E 21 C

MINING OR QUARRYING

29/

Propulsion of machines for slitting or completely freeing the mineral from the seam

29/

by means on the machine exerting a thrust against fixed supports

29/

by cable or chains

29/

anchored at one or both ends to the mine working face

29/

Anchoring arrangements (for anchoring of conveyers only E21F 13/00)

29/

Cable or chain co-operating with a winch or the like on the machine

29/

Machines propelled by thrust or pull against a part alternately anchored to, and released from, a cable or chain

29/

by haulage cable or chain pulling the machine along the working face

29/

Winches or other means for pulling cable or chain (winches in general B66D)

29/

Coupling and uncoupling machine to cable or chain

29/

with safety devices operating in the event of breakage of the cable or chain

29/

by wheels, endless tracks, or the like

29/

Trucks carrying the machine while working

29/

with means for adjustably positioning the machine on the truck

29/

adjusting the height of the whole machine

31/

Driving means incorporated in machines for slitting or completely freeing the mineral from the seam

31/

for cutting or breaking-down devices

31/

imparting both a rotary and reciprocating motion

31/

actuated by an endless cable or chain

31/

for adjusting parts of the machines

31/

for slewing parts of the machines

31/

Component parts

33/

Trucks or other devices for transporting machines for slitting or completely freeing the mineral from the seam

33/

with equipment for loading or unloading the machine on to, or from, the truck

35/

Miscellaneous items relating to machines for slitting or completely freeing the mineral from the seam

35/

Locking equipment for slewable parts

35/

Safety devices (operating in the event of breakage of a haulage cable or chain E21C 29/20)

35/

Equipment for positioning the whole machine in relation to its sub-structure

35/

Guiding the machine

35/

by feelers contacting the working face

35/

along a conveyer for the cut material

35/

Equipment for pressing the conveyer towards the working face

35/

by making use of the timbering, filling, or other supports

35/

Mining picks; Holders therefor (planing knives E21C 27/44) [6]

35/

183

with inserts or layers of wear-resisting material [6]

35/

187

with arrangement of fluid-spraying nozzles (supply of fluid to the nozzles E21C 35/22) [6]

35/

Means for fixing picks or holders [6]

35/

193

using bolts as main fixing elements [6]

35/

197

using sleeves, rings or the like, as main fixing elements [6]

35/

General features of equipment for removal of chippings, e.g. for loading on conveyer

35/

Equipment for preventing the formation of, or for removal of, dust (picks with arrangement of fluid-spraying nozzles E21C 35/187; methods or apparatus for flushing boreholes E21B 21/00)

35/

Distribution of spraying-fluids in rotating cutter-heads [6]

35/

Remote control specially adapted for machines for slitting or completely freeing the mineral (control in general G05)

37/

Other methods or devices for dislodging with or without loading (breaking-down by means inserted in slits E21C 27/14)

37/

by wedges

37/

by devices with parts pressed mechanically against the wall of a borehole

37/

by making use of hydraulic or pneumatic pressure in a borehole

37/

Devices with pistons, plungers, or the like pressed locally against the wall of the borehole

37/

Devices with expanding elastic casings

37/

by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid (slitting by jets of water E21C 25/60; blasting by explosives F42D)

37/

by compressed air; by gas blast; by gasifying liquids

37/

by fire-setting or by similar methods based on a heat effect (drilling by use of heat E21B 7/14)

37/

by electricity

37/

by ultrasonics

37/

Hand tools or hand-held power-operated tools specially adapted for dislodging minerals (slitting machines guided solely by hand E21C 25/64)

37/

Pick hammers (pneumatic hammers in general B25D; percussion drilling E21B 1/00)

37/

Chisels or other cutting tools not mentioned before

39/

Devices for testing in situ the hardness or other properties of minerals, e.g. for giving information as to the selection of suitable mining tools

Methods of mining or quarrying; Open-pit mining; Layouts therefor (methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells E21B 43/00)

41/

Methods of underground or surface mining (E21C 45/00 takes precedence); Layouts therefor (for peat E21C 49/00) [5]

41/

Methods of underground mining (winning machines therefor E21C 25/00 to E21C 39/00); Layouts therefor [5]

41/

for brown or hard coal [5]

41/

for rock salt or potash salt [5]

41/

for ores, e.g. mining placers [5]

41/

for oil-bearing deposits [5]

41/

Methods of surface mining (machines for obtaining, or the removal of, materials in open-pit mines E21C 47/00); Layouts therefor [5]

41/

for brown or hard coal [5]

41/

for ores, e.g. mining placers [5]

41/

Reclamation of surface-mined areas (machines or methods for treating or working soil for agricultural purposes A01B 77/00, A01B 79/00; machines for back-filling E02F 5/22) [5]

45/

Methods of hydraulic mining; Hydraulic monitors (E21C 25/60 takes precedence) [5]

45/

Means for generating pulsating fluid jets [5]

45/

by use of highly pressurised liquid [5]

45/

by use of compressed gases [5]

45/

Automatic or remote control of hydraulic monitors [5]

47/

Machines for obtaining, or the removal of, materials in open-pit mines (obtaining peat E21C 49/00)

47/

for coal, brown coal, or the like (dredgers or soil-shifting machines in general E02F) [3]

47/

Conveyer bridges used in co-operation with the winning apparatus [3]

47/

Cableway conveyers used in co-operation with the winning apparatus (underground hauling E21F 13/00)

47/

Devices for cutting-out partings, e.g. layers of sand between seams of coal

47/

for quarrying stone, sand, gravel, or clay

49/

Obtaining peat; Machines therefor (treating peat C10F)

49/

by excavating

49/

by digging in the form of peat sods

50/

Obtaining minerals from underwater, not otherwise provided for (suction dredgers or component parts thereof E02F 3/88; equipment for conveying or separating excavated material E02F 7/00; dippers G01N 1/12) [5]

50/

dependent on the ship movements (vessels or floating structures adapted for special purposes B63B 35/00) [5]

51/

Apparatus for, or methods of, winning materials from extraterrestrial sources (cosmonautics B64G) [2]

E21C - E21C 27/46