Work holders – Relatively movable jaws – Plural jaw pairs
Patent
1998-11-05
2000-05-16
Watson, Robert C.
Work holders
Relatively movable jaws
Plural jaw pairs
269242, 269243, 269268, 269902, B25B 510
Patent
active
060625546
ABSTRACT:
The instant invention is a dual clamping apparatus consisting of a three sided clampstand component, one left handed screw bolt and one right handed screw bolt, a bi-threaded barrel component held by the screw bolts insertable each through hexagonally shaped holes in the lateral sides of the clampstand, the barrel component having a horizontally inclined through hole centered therein from side to side, half of which is marked by the presence of right handed threading and half of which is marked by the presence of left hand threading for receipt of the screw bolts as well as having a plurality of closed lever holes within its outer surface for receipt of a lever to turn the barrel component through an angle causing movement outward or inward as the case may be of the inserted screw bolts and further with each screw bolt having a closed, threaded hole in the head of each for receipt of an extension screw component fitted with a threaded extension screw nut component with a pair of tapped holes in the base of the clampstand and an optional lever component.
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Watson Robert C.
Welch Jr., Esq. John J.
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