B - Operations – Transporting – 23 – P
Patent
B - Operations, Transporting
23
P
26/98
B23P 11/00 (2006.01) B27F 7/15 (2006.01)
Patent
CA 1041279
James D. Adams CAMBERING ATTACHMENT FOR TRUSS ASSEMBLY JIG USING CANTED ROLLER PRESS Abstract of the Disclosure Joist trusses, having generally parallel upper and lower chord members, are necessarily manufactured with a camber and pre- ferably upon an assembly jig having a longitudinally disposed, mov- able, endless belt-like support surface for supporting precut wooden members arranged into the shape of a joist truss. Clamping devices, mounted upon the support surface, hold the precut members in place and spiked, metal gusset plates are placed at opposite sides of each joint of the truss. Two pairs of opposing, transversely-disposed rolls, arranged as roller presses, are locat- ed at one end of the support surface, with a first pair of rolls being positioned to receive both the support surface and the assem- bled truss thereon, so as to partially impale the gusset plate spikes into the members. The second pair of rolls are positioned beyond the support surface to tightly press the gusset plates against the sides of the truss as it passes through these rollers. The second pair of rolls are skewed, or angled from a normal trans- verse axial position to impart a predetermined camber into a truss as it moves through these rolls. :
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