Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam

Classification Context

Section:

FIXED CONSTRUCTIONS

Class:

EARTH OR ROCK DRILLING; MINING

Subclass:

MINING OR QUARRYING

Related Keywords

Child Classifications

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• E21C 25/02 Machines slitting solely by one or more percussive tools moved through the seam
• E21C 25/06 Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
• E21C 25/16 Machines slitting solely by one or more rotating saws, cutting discs, or wheels
• E21C 25/2 Machines slitting solely by one or more reciprocating sawing implements or reciprocating cutter chains; Shaker conveyors with cutting means
• E21C 25/22 Machines slitting solely by one or more cutter chains moving unidirectionally along jibs
• E21C 25/52 Machines incorporating two or more of the slitting means according to groups , , , and
• E21C 25/54 Slitting by unguided cutter cables or cutter chains or by unguided tools drawn along the working face by cables or the like
• E21C 25/56 Slitting 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, e.g. by a conveyor or by a guide parallel to a conveyor
• E21C 25/58 Machines slitting by drilling hole on hole
• E21C 25/6 Slitting by jets of water or other liquid
• E21C 25/62 Machines for making slits approximately perpendicular to the seams either level with, or above or below the level of, the machine
• E21C 25/64 Slitting machines guided solely by hand and either carried by hand or mounted on supports
• E21C 25/66 Machines for making slits with additional arrangements for drilling
• E21C 25/68 Machines for making slits combined with equipment for removing, e.g. by loading, material won by other means