Cutting machines

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING

E21C25/00Cutting machines

E21C25/02Machines slitting solely by one or more percussive tools moved through the seam E21C25/04Cutting crowns or other tools E21C25/06Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate E21C25/08Mountings for the rods or drums E21C25/10Rods Drums E21C25/14with equipment for cleaning the slit E21C25/145Cowls E21C25/16Machines slitting solely by one or more rotating saws, cutting discs, or wheels E21C25/18Saws Discs Wheels E21C25/20Machines slitting solely by one or more reciprocating sawing implements or reciprocating cutter chains Shaker conveyors with cutting means E21C25/22Machines slitting solely by one or more cutter chains moving unidirectionally along jibs E21C25/24with flat jibs only E21C25/26with curved jibs only E21C25/28Chains or chain guides E21C25/30Chain guides E21C25/32specially adapted for curved jibs E21C25/34Chains E21C25/36Couplings for links E21C25/365allowing the bending into at least two planes E21C25/40having links with integrally formed picks E21C25/50with equipment for cleaning the slit E21C25/52Machines incorporating two or more of the slitting means according to groups E21C25/02, E21C25/06, E21C25/16, E21C25/20 and E21C25/22 E21C25/54Slitting by unguided cutter cables or cutter chains, or by unguided tools drawn along the working face by cables or the like E21C25/56Slitting by cutter cables or cutter chains or by tools drawn along the working face by cables or the like, in each case guided parallel to the face E21C25/58Machines slitting by drilling hole on hole E21C25/60Slitting by jets of water or other liquid E21C25/62Machines for making slits approximately perpendicular to the seams either level with, or above or below the level of, the machine E21C25/64Slitting machines guided solely by hand and either carried by hand or mounted on supports E21C25/66Machines for making slits with additional arrangements for drilling E21C25/68Machines for making slits combined with equipment for removing