Traversing hoists – Having boom shiftable vertically along a linear path
Patent
1981-08-03
1983-10-04
Basinger, Sherman D.
Traversing hoists
Having boom shiftable vertically along a linear path
37 72, 414140, B66C 2318
Patent
active
044074204
ABSTRACT:
The invention relates to a ship (1) with one or more derricks (4), in particular a dredge having at least one derrick (4) for handling the suction pipe (22) which derrick (4) can be moved between an inboard position (7) and a vertical position. The derrick has guiding tracks (8,9) for a crane jib (17) which tracks (8,9) in the vertical position of the derrick (4) are in line with guiding tracks (15,16) inside the profile of the side wall (3) of the ship. The cable for controlling the jib (17) is protected by a channel inside the profile of the ship side wall (3) between the latter guiding tracks (15,16). The guiding tracks (8,9,15,16) have upper and lower stops (29,28) for controlling the movements of the crane jib (17) which jib (17) is pivotable about a horizontal axis (18) between a position perpendicular to the derrick (4) and a downwardly directed position.
REFERENCES:
patent: 2651122 (1953-09-01), Brinkman
patent: 2933837 (1960-04-01), Nelson
patent: 3943875 (1976-03-01), Sanders
patent: 4080920 (1978-03-01), Berthet et al.
Basinger Sherman D.
IHC Holland N.V.
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