Door lock drill assembly

Details Door lock drill assembly Door lock drill assembly

1980-05-19

1982-05-25

Briggs, William R.

Cutting by use of rotating axially moving tool

With work-engaging structure other than tool or tool-support

Having tool-opposing, work-engaging surface

408108, 408115R, B73B 4728

Patent

active

043314112

ABSTRACT:
A door lock drill assembly includes a housing with an apertured side wall and end wall, securable upon the upright edge of a door for drilling a first aperture through the door on a first axis and successively drilling a second aperture into the door edge on second axis coplanar to and at right angles to the first axis. Guides are mounted upon the side wall and end wall and extend at right angles thereto. A hole saw is reciprocally mounted upon one guide coincident with the first axis, and includes a projecting coaxial drill shaft. A drill bit is reciprocally mounted upon the other guide coincident with the second axis, and includes a projecting coaxial drill shaft. The drill shafts are adapted to be selectively and alternately power driven and fed into the door by the application thereto of a power driven tool.

REFERENCES:
patent: 1299938 (1919-04-01), Hathawa
patent: 1919900 (1933-07-01), Moller
patent: 2679174 (1954-05-01), Schlage
patent: 2679771 (1954-06-01), Schlage
patent: 3048062 (1962-08-01), Bass
patent: 3293953 (1966-12-01), Hendrick
patent: 3327573 (1967-06-01), Prussiano
patent: 3635571 (1972-01-01), Roberts
patent: 3874810 (1975-04-01), Russell
patent: 4036560 (1977-07-01), Clark et al.
patent: 4072441 (1978-02-01), LaPointe
patent: 4082474 (1978-04-01), Stiger
patent: 4242016 (1980-12-01), Faris
patent: 4248554 (1981-02-01), Boucher et al.

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