Ship unloader with screw conveyor swingable in various planes

Details Ship unloader with screw conveyor swingable in various planes Ship unloader with screw conveyor swingable in various planes

1988-08-05

1990-05-22

Spar, Robert J.

Material or article handling

Marine loading or unloading system

Marine vessel to/from shore

4141414, B65G 6760

Patent

active

049273116

ABSTRACT:
An unloader having a vertical screw conveyer suspended from the head of the boom for conveying bulk cargoes from a ship, and a boom conveyer disposed above the boom for conveying the cargoes to the ground. The vertical screw conveyer is not only swingable within a plane parallel to the boom-hoisting plane but also able to pivot about the axis of the boom. Thus, this arrangement makes the vertical screw conveyer swingable in two directions. Accordingly, the vertical screw conveyer can reach locations below a hatch both in the transverse direction of the ship and in the longitudinal directions thereof, thereby enhancing the efficiency of unloading operation particularly with respect to these locations which have been out of reach with a conventional unloader.

REFERENCES:
patent: 1058306 (1913-04-01), Kindl
patent: 3640376 (1972-02-01), Peuker et al.
patent: 4020953 (1977-05-01), Eklof et al.
patent: 4152029 (1979-05-01), Cowpertwait
patent: 4738578 (1988-04-01), Johnston
patent: 4755094 (1988-07-01), Kaucic
The 1986 Loadstar Bulk Handling Directory.

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