Work holders – Relatively movable jaws – Jaw features
Patent
1977-08-03
1978-03-14
Watson, Robert C.
Work holders
Relatively movable jaws
Jaw features
B25B 124
Patent
active
040787826
ABSTRACT:
An accessary apparatus for vises utilizes a pair of accessory members, one of which has a Z shaped cross-section and means to removably secure the Z shaped cross-section to the stationary non movable portion of the vise. The other accessary member is provided having an L-shaped portion and means to secure the other accessary member to the movable portion of the vise. The L-shaped access member is adapted to have one leg thereof reside on the uppermost portion of the vise. The uppermost surface of the leg of the L-shaped member is provided with a pair of notches adapted to slidably lockingly engage a bar therewithin. The Z shaped member has an upwardly protruding leg extending parallel to the clamping face of the stationary member of the vise. Work is clamped between the upwardly extending leg of the Z shaped member and a surface of the bar when engaged within the notch. Thus, the work piece hangs over a portion of the stationary member and a portion of the movable member of the vise. By moving the bar into the other notch the range of the vise may be extended. Work pieces may also be clamped within the legs of the accessory devices so as to utilize the original range of motion of the vise. Ordinary vises may be utilized with the accessory apparatus so as to extend the clamping range of the vise in the vicinity of twice the normal clasping distances accepted by the vise without the accessory apparatus.
REFERENCES:
patent: 2490843 (1949-12-01), Sordi
patent: 2770156 (1956-11-01), Brettrager
patent: 3502319 (1970-03-01), Kazolias
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