Adjustable wrench

Details Adjustable wrench Adjustable wrench

1976-02-09

1977-06-14

Smith, Al Lawrence

Tools

Wrench, screwdriver, or driver therefor

Slidable jaw adjustments

81170, B25B 1316

Patent

active

040289702

ABSTRACT:
An adjustable open end wrench is presented, the wrench having a thumb operated pulley in the handle, a worm gear drivingly connected to an adjustable jaw in the head, and a drive belt running between the thumb pulley and the worm gear.

REFERENCES:
patent: 1196393 (1916-08-01), Parmer
patent: 2646710 (1953-07-01), Allen
patent: 2708386 (1955-05-01), Ellis, Jr. et al.
patent: 3368432 (1968-02-01), Halls
patent: 3376766 (1968-04-01), Vienat
patent: 3555939 (1971-01-01), Halls
patent: 3901107 (1975-08-01), Halls

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