Tools – Wrench – screwdriver – or driver therefor – Slidable jaw adjustments
Patent
1983-11-14
1986-02-18
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Slidable jaw adjustments
B25B 1316
Patent
active
045705151
ABSTRACT:
The present invention relates to a movable wrench equipped with movable claw which is driven and rotated by adjusting rod, wherein front and rear ends of rotary shaft respectively couples with I type Fan-shaped gear and adjusting rod by two pins, and concave ring of I type fan-shaped gear is propped by screw, and when adjusting rod is rotating, rotation of adjusting rod moves through rotary shaft and I type fan-shaped gear to fan-shaped gear at another end of adjusting rod and drives fan-shaped gear to slid the movable claw forward and backward. Further design of the present invention is to dig a longitudinal groove for sliding a driving pin at the bottom end of rotary shaft, and in the inner hole of adjusting rod, there designed inner thread for screwing with external thread of handle, owing to the above-mentioned design adjusting rod can adjust movable claw, to increase or decrease length of handle, and increase arm of force to save labor and let movable claw not slid when workpiece is wrenched.
REFERENCES:
patent: 784243 (1905-03-01), Whaley
patent: 1354782 (1920-10-01), Schlote
patent: 1886907 (1932-11-01), Rugger
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