Tools – Wrench – screwdriver – or driver therefor – Rigid jaws
Patent
1998-07-13
1999-08-03
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Rigid jaws
811211, 4052591, B25B 1304
Patent
active
059310642
ABSTRACT:
An insertion tool for inserting a multi-strand twisted cable into a blind mine tunnel roof bore hole includes a drive mechanism on one end thereof for fitting into a conventional bolting machine, and a socket on the opposite end thereof for receiving therein the bare end of a multi-strand twisted cable. The insertion tool socket is formed in the reverse pattern of the circumferential configuration of a conventional seven-strand twisted steel cable, having six essentially semi-cylindrical elongate and parallel arcuate channels formed therein in a spiral identical to that of the outside surfaces of respective cable strands of the twisted cable. The insertion tool is used by inserting, with a slight twisting action in the direction of the cable strand spiral, the bare end of the multi-strand steel twisted cable into the insertion tool socket mechanism. The opposite end of the insertion tool is then fitted into a conventional bolting machine boom arm for driving the multi-strand cable, via the insertion tool, into the bore hole in the mine tunnel roof in a manner similar to that in which the bolting machine would insert a conventional headed mine roof anchor bolt or multi-strand cable.
REFERENCES:
patent: 906040 (1908-12-01), Lucas
patent: 1590200 (1926-06-01), McGuckin
patent: 3161090 (1964-12-01), McLellan
patent: 4784531 (1988-11-01), Calandra, Jr.
patent: 5230589 (1993-07-01), Gillespie
patent: 5551320 (1996-09-01), Horobec et al.
patent: 5560740 (1996-10-01), Castle
patent: 5699572 (1997-12-01), Castle et al.
Danganan Joni B.
Scherbel David A.
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