Work holders – Plural holders to hold workpieces relative to each other – Workpieces normal to each other
Patent
1974-10-02
1976-03-16
Smith, Al Lawrence
Work holders
Plural holders to hold workpieces relative to each other
Workpieces normal to each other
269 90, 269218, 269233, 269254R, B25B 120
Patent
active
039442004
ABSTRACT:
Clamping apparatus for quickly and accurately positioning and maintaining a pair of workpieces, such as mitered end picture frame moldings or the like, in desired, generally end-to-end, angularly related positions and being characterized by evenly and resiliently applying clamping forces and positioning forces to the pair of workpieces regardless of slight variations in width of the workpieces, as follows. Backstops receive the outer longitudinal side edges of each of the workpieces and are mounted in angularly related positions corresponding to the desired positions of the workpieces. A slide block is positioned for linear movement along an axis bisecting the angle formed by the workpieces when positioned against the backstops and carries a pair of separate gripper members in side-by-side relation for engaging the workpieces during forward movement for clamping the workpieces against the backstops and for independent movement toward each other upon engagement with the inside edges of the workpieces for sliding the workpieces toward each other for a tight end-to-end abutment for positioning the workpieces. Resilient members separately bias and cushion the gripper members against the opposing movement toward each other for insuring substantially equal and even applications of the clamping and positioning forces by the gripper members to the respective workpieces regardless of slight variations in width thereof.
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Smith Al Lawrence
Watson Robert C.
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