Force lever attachment for hand tools

Details Force lever attachment for hand tools Force lever attachment for hand tools

1977-01-24

1979-01-30

Scott, Samuel

Machine element or mechanism

Control lever and linkage systems

Elements

173 36, 408 72R, 408136, 408241R, 408712, G05G 104, B23B 4700, B23B 3900

Patent

active

041365798

ABSTRACT:
A power drill attachment for exerting pressure through the drill bit onto the workpiece has a toggle linkage to provide a mechanical advantage of such sensitivity as to permit the operator to easily and quickly control the amount of pressure being exerted throughout the drilling operation. The attachment is especially adapted for use when drilling holes in door and window frames, through floor joists, studs, rafters and other building framework.

REFERENCES:
patent: 595896 (1897-12-01), Dusen et al.
patent: 1684514 (1928-09-01), Phillips
patent: 2140854 (1938-12-01), Schnebly
patent: 2405110 (1946-08-01), Bullock
patent: 2466965 (1949-04-01), Pitts
patent: 2625063 (1953-01-01), Hanson
patent: 2716019 (1955-08-01), Shacikoski
patent: 2879677 (1959-03-01), Baublitz
patent: 2925001 (1960-02-01), Johnson
patent: 2947204 (1960-08-01), Pine et al.
patent: 3552239 (1971-01-01), Yeaman et al.

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