Ship lifting apparatus

Details Ship lifting apparatus Ship lifting apparatus

1975-10-28

1976-09-07

Shapiro, Jacob

E02C 500, B66B 904, B63C 500

Patent

active

039786765

ABSTRACT:
A ship lifting apparatus, or drydock, is formed by a pair of parallel, spaced apart piers which define a slip in which is located a platform on to which a ship can be floated. The platform is raised or lowered by a plurality of chain jacks mounted in aligned rows on each of the piers. One of the chain jacks is a master jack and has chain link-engaging latches controlled by a cam and follower while the other chain jacks are slave jacks being actuated by connection to each other and the master jack by tensioned cables attached to their latch actuating mechanisms.

REFERENCES:
patent: 481411 (1892-08-01), Moran
patent: 1061213 (1913-05-01), Arbuckle
patent: 3791229 (1974-02-01), Liedtke

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