Guiding and positioning device for the block and hook of a derri

Details Guiding and positioning device for the block and hook of a derri Guiding and positioning device for the block and hook of a derri

1973-11-28

1976-05-11

Spar, Robert J.

Implements or apparatus for applying pushing or pulling force

Method or apparatus for placement of conductive wire

Conduit snakes

254188, B66c 2360

Patent

active

039557987

ABSTRACT:
Improved guiding and positioning device for the block and hook of a derrick installed on board a ship, enabling dual speed boring, which, as an assembly formed by the block and the hook, is connected to a carriage sliding on two rails parallel to the axis of the well by two indentical mechanisms ensuring horizontal linear movement of the block and the hook.

REFERENCES:
patent: 2201147 (1940-05-01), Bury et al.
patent: 2480916 (1949-09-01), Gibson
patent: 2928558 (1960-03-01), Bamford
patent: 3228659 (1966-01-01), Sturm
patent: 3507405 (1970-04-01), Jones et al.
patent: 3526425 (1970-09-01), Langowski et al.

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