Curb drain hole drill

Details Curb drain hole drill Curb drain hole drill

1974-07-29

1976-07-06

Purser, Ernest R.

Tool driving or impacting

With work engaging means supporting drive

Anchored to work

173 37, 248279, 408 92, 408 99, 408112, E01C 2300

Patent

active

039676870

ABSTRACT:
A drill apparatus for providing a drain hole in curbing comprises a core drill mounted for longitudinal movement along a horizontal post held between a drill frame and a hooking member positioned in hooking relation with the curb. The horizontal post is tightened in compression while a pair of chains extend between the hooking member and the drill frame for holding the frame in firm contact with the curbing.

REFERENCES:
patent: 1911975 (1933-05-01), Smith, Sr. et al.
patent: 2730334 (1956-01-01), Sullivan
patent: 3007686 (1961-11-01), Pearson
patent: 3538794 (1970-11-01), Grundmeyer
patent: 3696874 (1972-10-01), Brinkman
patent: 3834828 (1974-10-01), Kikuchi

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