US1370912A - Means for unloading floatable cargoes - Google Patents

Description

J. REID.

MEANS FOR UNLOADING FLOATABLE CARGOES.

APPLlCATION HLED NOV. 12, 1919.

Patented, Mar. 8,1921.

UNITED STATES JOHN REID, OF NEW YORK, N. Y.

MEANS FOR UNLOADING FLOATABLE CARGOES.

Specification of Letters Patent.

Patented Mar. 8, 19521.

Application filed November 12, 1919. Serial No. 337,608.

1'0 all w/wm it may concern:

Be it known that I, JOHN Ran), a subject of the King of Great Britain, and residing at 30 Church street, in the city of New York, in the State of New York, in the United iitates of America, have invented a new and useful Means for Unloading Floatable Cal-goes, of which the following is the specilication.

The invention relates to means for unloading floatable cargoes, as described in the present specification and illustrated in the accompanying drawings that form part of the same.

The invention consists essentially of the novel means employed, whereby on canting a ship by means of her water ballast a force is employed, which drives any deck load into the water and lifts the floating pieces over any interrupting projection.

he objects of the invention are to facilitate the discharge of the cargo of pulp wood from vessels in that trade or of any other floatable material that may advantageously be dumped into the water alongside; to imsure despatch for wood carrying vessels and thereby reduce the expense of the transportation and increase the number of trips of these ships in any one season or period; to eliminate manual labor in handling the wood at the destination of the cargo; and generally to provide efficiency and cheapness in such operations.

In the drawings, Figure 1 is a side elevation of a ship, showing the means for unloading floatable cargoes.

Fig. 2 is a plan view of the ship, showing the preferable positions of unloading nozzles.

Fig. 3 is a transverse section, showing the ship in process of unloading.

Fig. 4: is a transverse section showing the unloading process at a later stage.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, the numeral 1 indicates a ship of the customary type used in the transportation of pulp wood, though the style and shape generally of the ship does not materially affect this invention, except that the wing ballast tanks 2 and 3 aid effectively in carrying out the purposes of this device.

The general method of unloading is to cant the vessel to facilitate the riddanoe of the deck load and to flood the holds 4 in order to float the wood up through the hatchways.

There is some difliculty in disposing of the deck load though much of it will tumble off into the water alongside especially if the wing tanks are alternately filled, but in this invention, the latter is really not a necessity and so far as the deck load is concerned, it is not required to cant the vessel at all, though it may be an advantage.

The floating of the wood over the 00amings of the hatohways is also an awkward proposition and this has to be overcome.

In the present invention the numeral 5 indicates a turbine water pump from which the pipe 6 extends to the upright pipes 7 and 8, the pipe 7 being aft of the holds 4: and the pipe 8 forward of the holds with the deck 9 between said pipes.

The upper ends of the pipes 7 and 8 terminate in the swivel bearings l0 and 11 carrying the brackets 12 and 13, and communicate with the nozzles 14: and 15.

The nozzles 14 and 15 are pointed in the direction desired by the handles 16 and 17 and are so mounted as to cover any part of the deck 9 or hatchways and thereby direct a forceful stream of water to the deck load to clear it off or to the upper layer of Wood from the holds that is floating at or about the coamings and lift the pieces over into the Water alongside.

Briefly the preferable way of operating this invention is to first clear the deck load by directing strong streams of water from the nozzles on to the pieces of wood. This will have the eflect of driving the wood into the water alongside and leave the hatch- Ways free. 'Greater despatch may be exercised by canting the vessel during the deck clearing, however as the deck load is mostly on a slanting surface inclined to either side of the ship, it will be readily driven off by the jets of Water.

The completion of the discharge of the deck load is followed by flooding the holds and in this Way lifting the wood up to the hatchways, where it is caught in the jets and quickly driven over the coamings into the water alongside.

Some changes may be made both in the construction and operation without departing from the spirit of the invention, and so long as these changes are within the scope of the claims for novelty following, the protection accorded shall not be invalidated.

What I claim is 1. In means for unloading floatable cargoes, the combination with acargo carrier vessel, of a swiveled nozzle directed from one end of the hold openings and adapted to sweep the area of the floating pieces with a stream to drive them over the coamings and obstructions into the water alongside, and a tubular connection to said nozzle from Water under pressure.

2. In means for unloading fioatable cargoes, the combination with a cargo carrier vessel having floodable holds as cargo space, of swiveled nozzles, each mounted at an elevation in respect to the deck level and adapted to direct streams, slightly deviating from the longitudinal line of the vessel thereby sweeping the pieces of cargo raised by Water in a hold over the coamings and side of the vessel, and a turbine pump suitably operated and connected to said nozzles.

3. A means for unloading fioatable cargoes in which the cargo is floated up to the coamings or rails comprising means for directing a stream of Water under pressure into the Water floating the cargo and thereby creating turbulent action and a direct drive to discharge the pieces of cargo over the side of the vessel.

Signed at the city of New York, N. Y., U. S. A. this 28th day of October, 1919. JOHN REID.

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