Presses – With ground-traversing wheels or guides
Patent
1973-09-20
1976-02-24
Wilhite, Billy J.
Presses
With ground-traversing wheels or guides
100218, 100231, 100272, 100295, 100DIG13, 227152, 269321F, B30B 1532
Patent
active
039397645
ABSTRACT:
An apparatus for fabricating wooden trusses includes a jig table composed of modular table sections cantilevered from supporting legs at one side and having a network of equally spaced indexing holes throughout the expanse of the table top. The wooden frame members making up the truss are assembled at their joints on pressure pads on the table top with the pads having pins which extend downwardly through the indexing holes. Air-operated lumber-locking devices hold the frame members together for fastening and are simultaneously releasable. A hydraulic wheel motor-driven lumber press is movable on a track along the jig table to press connector plates into the truss joints. The press has an open throat which receives the table top. A hydraulically actuated upper press platen overlies the full width of the table and a fixed lower platen underlies the table as the press moves along the table, stopping momentarily to press connector plates into the truss joints. The lower platen engages the pins of a pressure pad at each joint to lift the pad slightly from the table so that the connector plates are embedded within the truss joints without the pressure exerted by the press being applied to the table. The completed truss is rolled from the table after the lumber locks are released on extendable rollers provided on the table top.
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patent: 3605608 (1971-09-01), Dagley
patent: 3709762 (1973-01-01), Chandler
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