Devices for erecting a building from prefabricated sections

Details Devices for erecting a building from prefabricated sections Devices for erecting a building from prefabricated sections

1975-05-27

1976-08-10

Purser, Ernest R.

Traversing hoists

Overhead

Cable

212120, 212117, 52747, E04G 2306, B66C 2100

Patent

active

039736806

ABSTRACT:
Apparatus for erecting a prefabricated section building having two masts centered on either side of its foundation, the sections transported to loading areas adjacent and between each mast and the foundation. Cables connect the masts and support two independently operable trolleys between the masts, a hoist on each trolley including a cable connects via a yoke to a section in the loading area and lifts same vertically from a truck therein to at least the story being assembled, and then moves it horizontally to immediately above its ultimate location where it is lowered. A nearby operator, by remote control depending from the trolley, controls its movements to position it precisely, such control being of winches connected to cables for moving the hoist and trolleys. This operator also communicates with the ground by telephone or radio. Each mast has three stays. To raise it, it is laid out horizontally with the cables and stays positioned. A vertical support is connected to the stay leading towards direction the mast is raised. By pulling this support in a rotary downward motion, each mast is raised and then secured. The mast's relative orientation with the building to be erected is such that each section is maintained in desired geometric orientation commencing with positioning of the truck delivering same until placed in the building, the only movements being horizontal and vertical without movement fore and aft, twisting or turning except minor adjustments incident to its final correct positioning.

REFERENCES:
patent: 787569 (1905-04-01), French
patent: 844386 (1907-02-01), McCormick et al.
patent: 955940 (1910-04-01), Bowcher
patent: 1438453 (1922-12-01), Miller
patent: 2364851 (1944-12-01), Johansen
patent: 2421913 (1947-06-01), Stoddard
patent: 3083839 (1963-04-01), McIntyre
patent: 3116838 (1964-01-01), Park et al.
patent: 3333713 (1967-08-01), Cruciani

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