Portable variable angle drilling machine

Details Portable variable angle drilling machine Portable variable angle drilling machine

1981-07-27

1984-04-10

Purser, Ernest R.

Boring or penetrating the earth

With means to feed drive

175 62, 173 37, 173163, E22C 1100

Patent

active

044415648

ABSTRACT:
A hole drilling machine which includes a geared stationary drill frame with a guide track to which support legs are attached at either end. A drive shaft made of hollow flexible tubing driven by a motor suspended from the guide track. An adjustable swivel axel to which the drill end is mounted. The drill end is a hollow tube with openings in an end to permit streams of water to wash loose soil out of the hole and assist in the drilling process and a helical knife edge attached thereto. An angled metal piece with exit holes to permit the flow of water is attached to the working end.

REFERENCES:
patent: 1567829 (1924-01-01), Bettis
patent: 2631822 (1953-03-01), Ussery
patent: 2647726 (1953-08-01), Kirk
patent: 2661929 (1953-12-01), Aspelin
patent: 2665117 (1954-01-01), Ivey
patent: 2835472 (1958-05-01), Osborn
patent: 2879033 (1959-03-01), Edwards et al.
patent: 3986570 (1976-10-01), Stinson et al.

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