Floor mounted rotatable jib crane

Details Floor mounted rotatable jib crane Floor mounted rotatable jib crane

1994-10-26

1997-07-08

Brahan, Thomas J.

Traversing hoists

Having horizontally swinging boom or bridge

Having specific bearing structure

212223, 212260, B66C 2384

Patent

active

056451806

ABSTRACT:
A jib gantry is disclosed which has a connection between the upper end of a mast and a horizontally extending boom which allows tilting adjustment, which is secured in any adjusted position. The boom is hollow and slotted so as to be fixed at any point along the slot to the upper end of the mast. The lower end of the mast is rotatable within an upright pipe to be rotated to swing the boom through complete revolutions.

REFERENCES:
patent: 1399351 (1921-12-01), Lee
patent: 2446220 (1948-08-01), Erdahl
patent: 2571858 (1951-10-01), Garland
patent: 2956691 (1960-10-01), Fangman
patent: 3129821 (1964-04-01), Graham et al.
patent: 3315820 (1967-04-01), Stauffer

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