Wrench

Details Wrench Wrench

1985-06-28

1987-03-31

Olszewski, Robert P.

Tools

Wrench, screwdriver, or driver therefor

Slidable jaw adjustments

811295, 192 67R, 192 99S, B25B 1314

Patent

active

046533575

ABSTRACT:
A wrench comprises a handle and a gripping mouth which is defined by two jaws, one of which is fixed and the other movable. The movable jaw is associated with a rack engaging a gear which is rotatably mounted relative to the handle and actuated by at least one spring constantly striving to rotate the gear in a direction such that the jaws are moved towards one another, said gear cooperating with a locking device which can be set in two different positions, a first position in which the gear is freely rotatable, and a second position in which the gear is non-rotatable and in which the gear, in turn, renders displacement of the movable jaw relative to the fixed jaw impossible.

REFERENCES:
patent: 983628 (1911-02-01), Lindsay
patent: 1148410 (1915-07-01), Smith et al.
patent: 1386596 (1921-08-01), Carpenter
patent: 2069582 (1937-02-01), Justice
patent: 4454791 (1984-06-01), Seward

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