Presses – Roll and platen
Patent
1976-07-02
1978-04-18
Wilhite, Billy J.
Presses
Roll and platen
100DIG13, 100173, 269321F, 227152, B30B 302
Patent
active
040844986
ABSTRACT:
A floor truss making apparatus having a pair of slightly curved rails, each with a plurality of positioning pads for retaining elongated truss plates forming the top and bottom of the truss, end truss plates for the end of the truss, and angle truss plates which are disposed at an acute angle between the elongated top and bottom truss plates. A pad is provided at each of the truss joints. The pads are adjustably fixed to the rails and the rails are adjustable with respect to each other so that a wide size range of trusses can be constructed with the apparatus. Adjustable nail plate positioning means are provided on each pad to properly locate and hold the nail plates under the truss. The nail plates are also placed on top of the assembled trusses. A gantry roller press rolls over the top of the truss (or other pressure means are provided) to at least partially force both nail plates into the truss plates. The truss is transferred to a second pressing operation to complete the seating of the nail plates into the truss. The truss has a slightly curved shape or camber for prestressing of the floor truss.
REFERENCES:
patent: 2983292 (1961-05-01), McKinley
patent: 3100301 (1963-08-01), Black
patent: 3241585 (1966-03-01), Jureit
patent: 3255943 (1966-06-01), Sanford
patent: 3375778 (1968-04-01), Newman
patent: 3379354 (1968-04-01), Moehlenpah
patent: 3538843 (1970-11-01), Lubin
patent: 3749391 (1973-07-01), Templin
Ottawa Roof Truss, Inc.
Wilhite Billy J.
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