Tools – Wrench – screwdriver – or driver therefor – Slidable jaw adjustments
Patent
1982-05-11
1984-06-19
Schmidt, Frederick R.
Tools
Wrench, screwdriver, or driver therefor
Slidable jaw adjustments
81130R, 81142, B25B 1314
Patent
active
044547919
ABSTRACT:
A lock for an adjustable jaw wrench of the type including a sliding jaw having a rack gear integral therewith and a rotatable gear or finger wheel in meshing engagement therewith so that by rotation of the rotatable gear, the slidable jaw may be moved toward and away from a stationary jaw for adjusting the effective size of the wrench. The lock of the present invention includes a movable component which lockingly engages both the rack gear and the rotatable gear or finger wheel thus locking these two components stationarily in relation to the body of the wrench and also locking them in stationary relation to each other. The movable lock includes a laterally slidable component disposed in a transverse opening in the body of the wrench with peripheral edge surface portions of the movable component including teeth engageable with the teeth on the rack gear and the teeth on the rotatable gear to maintain the gears locked in relation to each other and in relation to the body of the wrench with the movable lock component having the end portions thereof flush with the body of the wrench when in locked position and having one end projecting slightly outwardly of the body of the wrench when in unlocked position to facilitate lateral sliding movement thereof between a locked and unlocked position.
REFERENCES:
patent: 207709 (1878-09-01), Brett
patent: 598588 (1898-02-01), Whitehead
patent: 777025 (1904-12-01), Jacobsen
patent: 1438641 (1922-12-01), Gazlay
patent: 1456208 (1923-05-01), Armstrong
patent: 1458037 (1923-06-01), Dickey
patent: 3948120 (1976-04-01), Hancock
Jacobson Harvey B.
Meislin Debra S.
Schmidt Frederick R.
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