Static structures (e.g. – buildings) – With lifting or handling means for primary component or...
Patent
1978-05-11
1980-08-12
Faw, Jr., Price C.
Static structures (e.g., buildings)
With lifting or handling means for primary component or...
52127, 52749, E04D 1500
Patent
active
042166330
ABSTRACT:
A lifting apparatus for elevating folding roof sections comprises a pair of jackknifing lifting bars. A hoist means transmits a pulling force to the bars, thereby enabling each bar to unfold from a initial folded configuration into an extended straight configuration. The bars elevate first roof sections to an intermediate pitch while unfolding into the straight configuration and while rotating into a generally vertical position with respect to the first roof sections. Remaining roof sections, together with the first roof sections, are elevated to a desired pitch with the bars in the straight configuration by applying additional force. Additional force causes the bars to rotate from the vertical position into a generally horizontal position while lifting both first and second roof sections to the desired pitch. At the start of the lift, all roof sections are horizontally folded and substantially supported on first segments of hinge plates fastened thereto. Second segments of these hinge plates are attached to the top ends of interconnecting side walls. During elevation, the lifting of the roof sections causes the first segments to bend to an angle determined by the pitch of the roof sections. Subsequent to adjusting the roof sections to a final pitch and position, end gables are installed and replace the hinge plates in the function of substantially supporting the roof sections. Eliminating the force from the hoist means allows the bars to refold and be removed.
REFERENCES:
patent: 3375624 (1968-04-01), Mikulin
patent: 3557500 (1971-01-01), Schmidt
patent: 3694022 (1972-09-01), Dontigny
patent: 3724157 (1973-04-01), Miram
patent: 3924889 (1975-12-01), Gogush
patent: 3975872 (1976-08-01), Pinero
Grauer Edward C.
Kennedy William H.
Faw Jr. Price C.
General Electric Company
Raduazo Henry E.
Young Stephen A.
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