Work holders – Relatively movable jaws – Jaw features
Patent
1992-07-24
1993-06-29
Watson, Robert C.
Work holders
Relatively movable jaws
Jaw features
B25B 100
Patent
active
052229971
ABSTRACT:
A holder device for selectively positioning and retaining a pair of parallels at a selected position against the opposed jaws of a vise found on a milling machine, drill press or the like. The holder device includes stationary and movable retaining members in the form of flat plates and a guide arrangement for maintaining the retaining members parallel during movement between extended and retracted positions. The guide arrangement includes two parallel spaced inner tubes attached at adjacent ends to the stationary retaining member and extending perpendicular to the length of the inner tubes together with a pair of parallel spaced outer tubes attached at adjacent ends of the second retaining member and perpendicular thereto. The outer tubes telescope over the inner tubes to provide parallel positioning for the retaining members. A force applying or bias is provided in each of the inner tubes causing the two retaining members to move to a separated extended position of maximum spacing. When an inward force is applied against the retaining member in the direction of the tube length, the retaining plate moves to a closer position so that when between a pair of vise jaws the retaining members resiliently urge a pair of parallels against the vise jaws.
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