Adjustable socket wrench

Details Adjustable socket wrench Adjustable socket wrench

1976-03-24

1977-05-10

Smith, Al Lawrence

Tools

Wrench, screwdriver, or driver therefor

Pivoted side jaw

B25B 1332

Patent

active

040220869

ABSTRACT:
A longitudinally split socket member is connected to an end of an elongated drive shank having throughout a part of its length a generally square cross-section and threaded corners. An adjustment cone is threadably received on said threads and when rotated travels along said shank and axially into or out from a longitudinally split conical socket formed in lever portions of the socket member halves. Axial movement of said cone adjusts the spread of the lever portions of the socket member. This results in pivotal movement of the two socket member halves about a transverse pivotal axis and also results in a corresponding change in the spread of wrench jaws which extend endwise of the socket member from the pivotal axis, oppositely from the lever portions. A drive member is movable axially along the drive shaft and carries a plurality of drive keys which extend from said drive member axially into key sockets formed therefor in the lever portions of the socket member halves. These key sockets are dimensioned to snugly receive the keys in the direction extending axially of the pivotal axis and to loosely receive said drive keys in the direction extending prependicularly to said pivotal axis, so that the drive keys can mate with the key sockets throughout the full range of adjustment of the socket wrench member.

REFERENCES:
patent: 1432324 (1922-10-01), Fannen
patent: 2416228 (1947-02-01), Sheppard

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