Tools – Wrench – screwdriver – or driver therefor – Slidable jaw adjustments
Patent
1988-12-23
1990-02-27
Smith, James G.
Tools
Wrench, screwdriver, or driver therefor
Slidable jaw adjustments
81154, B25B 1324
Patent
active
049035568
ABSTRACT:
A wrench capable of being quickly adjusted and secured in position by the sliding movement and wedging action of the movable parts of the wrench. The wrench comprises a handle portion and a head portion provided with a fixed jaw, a movable jaw carried by the head portion having an angled bottom surface, a slot formed in the head portion with a surface portion disposed in a plane oblique to the direction of movement of the movable jaw, a movable cleat carried within the slot, a guide channel formed in the head portion for slidably receiving the movable jaw, and a set of gripping plates affixed laterally to the cleat. Movement of the gripping plates cooperatively moves the cleat which in turn engages and cooperatively moves the movable jaw until the jaw secures the nut or bolt against the fixed jaw. Pressure produced by the user attempting to turn the nut or bolt tends to wedge the cleat between the bottom surface of the movable jaw and the surface portion of the slot while the oblique surfaces incorporated in the movable parts of the wrench prevent the movable jaw from opening while in use.
REFERENCES:
patent: 1004561 (1911-10-01), Fitzgerald
patent: 1389487 (1921-08-01), Cassel
patent: 1397214 (1921-11-01), Hose
patent: 1427918 (1922-09-01), Stauffer
patent: 1481250 (1924-01-01), Bohn et al.
patent: 1511536 (1924-10-01), Strickler
patent: 1514017 (1924-11-01), Schroeder
patent: 2948175 (1960-08-01), Bonkowski
Masbaum Tom
Spirov Predrag
Masbaum Tom
Smith James G.
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