Tools – Wrench – screwdriver – or driver therefor – Sliding jaw – handle-lever grip
Patent
1979-11-13
1981-06-30
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Sliding jaw, handle-lever grip
81367, B25B 1312
Patent
active
042756235
ABSTRACT:
An elongate, vice-like hand tool including an elongate case with front, central and rear hand-grip portions, a work-engaging head at the front end of the case and including fixed and movable parts, an elongate tension member having a front end coupled with a movable part of the head and extending rearward through the central portion to the rear portion of the case, a toggle mechanism in the rear portion of the case including a longitudinally shiftable bar with a front end coupled with the rear end of the member, a manually engageable first lever arm with a front end pivoted to the case and shiftable from an actuated position adjacent the case to an actuated position where its rear end is moved laterally from the case, a second lever arm with a front end pivoted to the first arm rearward of its pivotal axis and means releasably establishing driving engagement with the bar and coupled with the rear end of the second arm, said means releases driving engagement with the bar when the first arm is in its fully unactuated position whereby the bar and its related movable part can be shifted to adjust the head to engage a piece of work preparatory to moving the first arm to its actuated position; the toggle mechanism is such that when the first arm is moved from its unactuated to its actuated position, the bar and its related tension member are moved axially rearward in and through the case.
REFERENCES:
patent: 877763 (1908-01-01), Deason
patent: 2495699 (1950-01-01), Clark
patent: 2772591 (1956-12-01), Munroe
patent: 3564956 (1971-02-01), Landen
patent: 3672245 (1972-06-01), Hoffman
Maxwell Georges A.
Smith James G.
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