Adjustable ratchet wrench

Details Adjustable ratchet wrench Adjustable ratchet wrench

1974-06-03

1976-02-24

Smith, Al Lawrence

Tools

Wrench, screwdriver, or driver therefor

Plural pivoted jaws and handle-lever

81138, B25B 1328, B25B 1314

Patent

active

039397394

ABSTRACT:
An adjustable ratchet wrench adapted for one-hand manipulation in originally engaging an element to be turned, and subsequently effecting a ratchet action in turning the element wherein the jaws of the wrench are caused to grip the element when the wrench is swung in a first direction and release the element when the wrench is swung in the opposite direction. The mechanism for adjusting the jaws is further arranged to prevent overtightening of the jaws which could otherwise prevent the desired ratcheting action in the subsequent turning of the element. The jaw adjusting mechanism includes a ratchet and manual operating structure permitting free movement of the jaws to the element-engaging disposition and subsequent releasable locking of the jaws in such disposition to provide the improved ratcheting action in turning the element.

REFERENCES:
patent: 1386136 (1921-08-01), Sibbald
patent: 1808001 (1931-06-01), Melin
patent: 2800045 (1957-07-01), Mann

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