Ships – Scows – Dumping and unloading
Patent
1986-06-20
1987-02-24
Basinger, Sherman D.
Ships
Scows
Dumping and unloading
114 29, 114 36, B63B 3530
Patent
active
046448888
ABSTRACT:
A hopper vessel for storing bulk material such as dredged material, has one or more holds. The holds in their bottom are provided with trap doors that open by moving downwardly below the bottom of the vessel. In shallow water, there is the risk that these trap doors, when moved downwardly, will contact the bottom or the material that is deposited from the hopper vessel on the bottom. Therefore, some of the trap doors in the hold are at a higher level in the closed position than the other trap doors. To discharge material, the higher trap doors are opened first; and after enough material has been discharged that the vessel rises sufficiently high in the water, only then are the lower trap doors moved to open position to complete the discharge of the material. The higher trap doors are provided at the ends of the hold. This allows adjusting the angle of the vessel if the bottom of the body of water is sloped.
REFERENCES:
patent: 138179 (1873-04-01), Morris
patent: 606289 (1898-06-01), Lays
patent: 926597 (1909-06-01), Perry
patent: 1063284 (1913-06-01), Reid
patent: 1397527 (1921-11-01), Kulman
patent: 3698573 (1972-10-01), Wolters et al.
Avila Stephen P.
Basinger Sherman D.
IHC Holland N.V.
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