Hydraulically operated hoisting apparatus for a ship for...

Details Hydraulically operated hoisting apparatus for a ship for... Hydraulically operated hoisting apparatus for a ship for...

B - Operations, Transporting

66

C

212/34

B66C 23/36 (2006.01) B66C 13/02 (2006.01)

Patent

CA 1094988

ABSTRACT OF THE DISCLOSURE The present invention discloses a hydraulically operated hoisting apparatus for a ship for picking floating objects up out of the sea. It is characterized by an arm fixed on the deck of a ship so as to articulate about a horizontal axis with the end of the arm projecting freely over the side of the ship. The apparatus comprises means for picking up objects and coupling to a hydraulic cylinder which is connected to a source of liquid. The source of liquid has a liquid store which is acted on by gas pressure and is connected to the hydraulic cylinder via a valve which is opened by a member which senses the proximity of an object to be picked up to the end of the arm. The apparatus prevents the hoisted object from col- liding with the surface of the sea by hoisting the object suddenly and rapidly clear of the danger area above the surface of the sea. The power peaks required to accomplish this are supplied by the liquid store.

309875

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