Self-propelled dredging apparatus

Details Self-propelled dredging apparatus Self-propelled dredging apparatus

1977-03-02

1978-06-20

Blix, Trygve M.

Ships

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37 66, 56156, 299 90, E02F 306

Patent

active

040955451

ABSTRACT:
An improved self-propelled floating dredging apparatus including a buoyant hull structure carrying a pilot house and engine compartment. The buoyant hull comprises a pair of longitudinally aligned parallel pontoons to provide flotation. A rigid boom structure extends forwardly from the medial portion of the hull structure and is adapted to pivot about a horizontal axis, from a horizontal position to a submerged position, in response to the action of a pair of power cylinders and an interconnecting linkage. A diesel engine in the engine compartment drives a centrifugal dredging pump and a hydraulic fluid pump. A hydraulically driven, steerable water jet propulsion assembly is mounted on a transom at the aft end portion of the hull structure. A hydraulically driven cable winch mechanism is also mounted on the hull structure. An improved hydraulically driven dredging head is mounted on the forward end of the boom structure and employs enlarged cylindrical surfaces carrying radially outwardly extending cutter blades journaled thereon for rotation about a horizontal axis. A notched cutter bar is mounted intermediate a rigid plate and the enlarged cylinders through which the cutter blades closely pass to shred weeds and other fibrous materials encountered by the dredging head.

REFERENCES:
patent: 411183 (1889-09-01), Bowers
patent: 3101932 (1963-08-01), Wright
patent: 3521387 (1970-07-01), Degelman
patent: 3738029 (1973-06-01), Harmon
patent: 3962803 (1976-06-01), O'Brien

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