Jig for retaining welding mitered joints between the members of

Details Jig for retaining welding mitered joints between the members of Jig for retaining welding mitered joints between the members of

1988-09-14

1991-04-09

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With work feeding or handling means

1563046, 269 41, B29C 6520

Patent

active

050061984

ABSTRACT:
A jig for welding mitered joints between members of molded plastic window and door frames, comprising four mutually positionable clamp assemblies, one to each corner of the frame, each of which comprises a pair of horizontal rests serving to support the members of the frame, and respective upwardly-projecting fences disposed transversely and parallel to the horizontal exit path followed by the frames, that register with the external faces of the rails and the uprights of the frame; each clamp assembly further comprises a pair of plates, located above the corresponding pairs of rests, that serve to hold the frame members fast against the rests as and when necessary. The fences disposed transversely to the exit path of the welded frame are embodied independently of the relative rests, and capable of movement between a first limit position, in which the rails are checked, and a second limit position in which the rails are freed and the fences themselves completely clear of the frame's transverse dimension.

REFERENCES:
patent: 4133097 (1979-01-01), Slade
patent: 4239574 (1980-12-01), Aust et al.
patent: 4258873 (1981-03-01), Vela
patent: 4473935 (1984-10-01), Tatsuura et al.
patent: 4527783 (1985-07-01), Collora et al.
patent: 4610440 (1986-09-01), Casset
patent: 4752350 (1988-06-01), Schuster
patent: 4801130 (1989-01-01), Montgomery
patent: 4909892 (1990-03-01), Quinn et al.

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