Frame holder
OwnerWilliam Farrinventor
Life of this patent
Estimating the term…
Abstract
A novel holder for work pieces, particularly for holding picture frame pieces in which the adjoining mitered ends of the frame pieces are brought together. The inventive concept resides in providing a mechanism which permits primary adjustment of the jaws in such manner that the pieces are easy to insert and wherein as the last increment of movement of the jaws they tightly clamp the pieces and move them endwise toward each other in perfect alignment and after nailing; the mechanism also quickly releases the joined frame pieces because of the electrical toggle linkage employed.
Claims6
A clamp comprising opposing relatively movable sets of jaws having opposing clamping faces, at least one set of jaws comprising:
- a support:
- jaw elements pivotally mounted on said support on axes generally parallel with said faces,
- means yieldably biasing said jaw elements to a position disposing the clamping faces thereon in converging relation to the respective opposing faces,
- and means for relatively advancing said one set of jaws relative to the other of said sets for clampingly engaging a work piece therebetween and pivoting the jaw elements to substantial parallelism with the opposing jaws and thus shifting the work pieces along the clamping faces, and a support mounting said clamp jaws, means connected to said one set of jaws carried by the support adjusting movement toward and away from the other of said sets of clamp jaws and comprising a pair of solenoids arranged in a toggle linkage interposed between the support and said one set of jaws for selectively clampingly locking said jaws against the work-piece and releasing the same.
A clamp comprising opposing relatively movable sets of clamp jaws having opposing clamping faces, means for relatively advancing one set of jaws relative to the other of said sets for engaging a work piece therebetween, said advancing means comprising a pair of opposed solenoids each having a shiftable core opposing the other, means for alternatively energizing said solenoids to open the clamp and to close the clamp, support means for the solenoids, and means including a holding circuit for releasably maintaining said clamp in open position, and means for overriding said holding circuit.
Dependencies are inferred from the claim text.