Handling: hand and hoist-line implements – Spacing hoist bar or frame – Load gripping units
Patent
1980-02-04
1981-05-26
Cherry, Johnny D.
Handling: hand and hoist-line implements
Spacing hoist bar or frame
Load gripping units
294 87R, B66C 114
Patent
active
042694426
ABSTRACT:
A suspension or rig for simultaneously setting a plurality of roof trusses on a building framing. A plurality of spaced vertical chains are suspended from a pair of horizontally extending pipes and connected to a central portion of each top sloping side of each truss, making two suspensions for each truss. A pair of horizontally extending spaced parallel pipes have ends connected to the pair of pipes. Suspending apparatus lifted by a crane comprises four linkage elements connected to end portions of the last mentioned pair of horizontally extending spaced parallel pipes. The pipes or beams may take other forms such as angle cross sections.
REFERENCES:
patent: 1007663 (1911-11-01), Atterbury
patent: 1291437 (1919-01-01), Desch
patent: 1762271 (1930-06-01), Hutchings
patent: 1846038 (1932-02-01), Owens
patent: 1970617 (1934-08-01), Morgan
Cherry Johnny D.
Ruano William J.
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