Cargo-handling machine with 300-degree operational azimuth range

Details Cargo-handling machine with 300-degree operational azimuth range Cargo-handling machine with 300-degree operational azimuth range

1978-08-22

1980-03-04

Kunin, Stephen G.

Material or article handling

Marine loading or unloading system

Marine vessel to/from shore

212 3A, 212 58A, 212 70, 414139, B63B 2704

Patent

active

041915020

ABSTRACT:
A double-topping type derrick crane is operable continuously throughout 300 degrees of azimuth turning of its boom to serve two loading areas forward and aft of the crane. This is made possible by a multiple-swivel, universal coupling mechanism between the two topping tackles and the boom top, this mechanism permitting one topping tackle to flip over the other, whereby the relative positions of the tackles are automatically inverted without mutual contacting or entwinement of the topping tackles.

REFERENCES:
patent: 3384246 (1968-05-01), Cochran
patent: 3386593 (1968-06-01), Spreng

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