Adjustable open-wrench with a sliding side jaw having a releasab

Details Adjustable open-wrench with a sliding side jaw having a releasab Adjustable open-wrench with a sliding side jaw having a releasab

1996-10-04

1998-05-05

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Slidable jaw adjustments

81151, 81DIG3, B25B 1316

Patent

active

057460990

ABSTRACT:
An adjustable sliding jaw wrench is disclosed which has a sliding jaw adjustment mechanism operated by a worm gear rotatably mounted in an opening in the wrench head, the worm gear driving a rack member to which the sliding jaw is attached. The worm gear is substantially shorter than the width of the opening in the wrench head in which it is mounted, and is spring biased into an operating position. A sliding locking member is movable between a locked position which will mechanically maintain the worm gear in its operating position, and an unlocked position in which the worm gear will be permitted to move in a direction opposing the biasing spring. When the locking member is in the locked position, the wrench will retain a fastener engaged by the wrench between the jaws of the wrench to rotate it; however, when the locking member is in the unlocked position, the jaws of the wrench may move apart by urging the worm gear to move in a direction opposing the biasing spring, thereby allowing the fastener to rotatably slip between the jaws of the wrench without itself being rotated.

REFERENCES:
patent: 1391251 (1921-09-01), Ginsburg
patent: 1599162 (1926-09-01), Brown
patent: 3022689 (1962-02-01), McComb
patent: 3174366 (1965-03-01), Fujii

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