Tools – Wrench – screwdriver – or driver therefor – Double-ended – simultaneous adjustment
Patent
1977-10-14
1979-05-01
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
Double-ended, simultaneous adjustment
81128, B25B 1310, B25B 1318
Patent
active
041517636
ABSTRACT:
A combination wrench is provided having an adjustable box-end wrench at one end and an adjustable open-end wrench at the other end. The box-end wrench includes a longitudinally movable adjusting member which forms a movable wall of a polygonal box structure integral with one end of a housing. The open-end wrench includes a pair of jaw members interconnected with the other end of the housing by a camming mechanism which effects lateral adjusting movement of the jaw members relative one another upon longitudinal movement relative the housing. The adjusting member and jaw members are coupled together for simultaneous movement to achieve same size adjustment at both ends. A one-way ratchet lock mechanism acts between the adjusting member and the housing and includes a plurality of ratchet teeth precisely located and spaced to size the wrences for each English size and metric size bolt to be fitted.
REFERENCES:
patent: 592199 (1897-10-01), Fletcher
patent: 1215726 (1917-02-01), Shew
patent: 1444907 (1923-02-01), Fisher
patent: 1554954 (1925-09-01), Fisher
patent: 2814226 (1957-11-01), Lojczyc
patent: 3282136 (1966-11-01), Maichen
Jones Jr. James L.
Smith James G.
Van Ophem Remy J.
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