Roof bolter

Details Roof bolter Roof bolter

1978-05-15

1980-05-06

Staab, Lawrence J.

Tool driving or impacting

Drive by means reacting to rotating eccentric mass

81 5725, 81 5741, 173 46, 173 52, 405259, 405303, E21C 500

Patent

active

042012708

ABSTRACT:
An operator controlled roof bolter with a flexible shaft drill and a roof bolt inserter for drilling and inserting a roof bolt into an unsupported roof of a mine while the operator is positioned at an outby station under a supported roof. The flexible shaft roof drill is constrained to a frame of the roof bolter for pivoting movement between a rest position and a working position. The roof bolt inserter is mounted on a slide for linear movement and limited rotational movement between a retracted position and an extended position for positioning a roof bolt held by the inserter into registration with a hole drilled by the roof drill.

REFERENCES:
patent: 2815191 (1957-12-01), Beltz
patent: 2854217 (1958-09-01), Benjamin
patent: 3141511 (1964-07-01), O'Leary
patent: 3218893 (1965-11-01), Madison et al.
patent: 3246705 (1966-04-01), Chappuis
patent: 3865197 (1975-02-01), McCormick
patent: 4050259 (1977-09-01), Childress
patent: 4057115 (1977-11-01), Blanz
patent: 4085492 (1978-04-01), Stange
patent: 4108253 (1978-08-01), Woodford
patent: 4117894 (1978-10-01), Saunders

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