Foldable machine for handling and lifting loads

Details Foldable machine for handling and lifting loads Foldable machine for handling and lifting loads

1987-10-22

1990-01-23

Peters, Jr., Joseph F.

Traversing hoists

Having means facilitating assembly or disassembly

Of traversing hoist from support

212187, 212188, 212261, B66C 2334

Patent

active

048952630

ABSTRACT:
The machine comprises, above a rotating frame, a mast which is foldable into two elements, a jib pivoted at the top of mast and a jib head member for the placing of loads, pivoted at the end of the jib. Straightening and holding in working position is assured by a unit comprising at least one counterbrace, a tie connected to a foot of the jib head member, a set of posts, a back holding cable, and a first double-acting jack associated with a system of connecting rods pivoted on the mast elements. Another double-acting jack connects the jib to the foot of the jib head member to make the machine work at different radii. The machine can be used for holding, lifting and placing loads on small-building construction sites.

REFERENCES:
patent: 2689053 (1954-09-01), Olson
patent: 3084806 (1963-04-01), Staples
patent: 3154198 (1964-10-01), Balogh
patent: 3235097 (1966-02-01), Ohman
patent: 3451427 (1969-06-01), Dellinger
patent: 3596772 (1971-08-01), Pingon
patent: 4383616 (1983-05-01), Sterner et al.
patent: 4660729 (1987-04-01), Carbert
patent: 4700851 (1987-10-01), Reeve

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