Chiseling apparatus

Details Chiseling apparatus Chiseling apparatus

1991-04-15

1993-01-19

Bagnell, David J.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Percussive-type cutter

1510407, 15242, 299 94, E21C 3726, F23J 300

Patent

active

051802104

ABSTRACT:
A piston and cylinder combination mounted on the end of an elongated handle projects into a chimney. A chisel is connected to the piston to reciprocate with the piston in response to high pressure air delivered to the cylinder. The chisel has a cutting edge which is offset from the axis of the piston to facilitate the chiseling of objections on the inside of a chimney.

REFERENCES:
patent: 873209 (1907-12-01), Busch
patent: 929489 (1909-07-01), Ratcliffe
patent: 1544635 (1925-07-01), De Graff
patent: 1884653 (1932-10-01), Gartin
patent: 2454884 (1948-11-01), Peaden
patent: 4408368 (1983-10-01), Vickery
patent: 4492000 (1985-01-01), Sskogen
patent: 4498212 (1985-02-01), Davis
patent: 4603747 (1986-08-01), Golden
patent: 4624712 (1986-11-01), Neumann et al.
patent: 4937939 (1990-07-01), Fisher

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