US2321980A - Hull construction - Google Patents

Description

June 15, 1943. E. BORNSCHEUER HULL CONSTRUCTION Filed June 20, 1941 MEL , INVENTOR vE'rne s1 Bormsch e uer ATTORN EYS ITNEBSES Patented June 15, 1943 HULL CONSTRUCTION Ernest Bornscheuer, Brooklyn, N. Y., assignor of one-half to Alice C. Bornscheuer, New York,

Application June 20, 1941, Serial No. 398,860

2 Claims.

This invention relates to ships, and more specifically to the construction of hulls adapted for use on cargo and other vessels.

An object of the invention is to provide a hull which may be simply, cheaply and quickly constructed, and which will offer less resistance to water than the conventional type now in use.

A further object of the invention is to provide a hull which will eliminate the necessity of curved and formed plates, and which may be constructed from straight flat plates with a minimum of fitting and prefabrication.

A further object is to provide a hull which will in effect follow the lines of a fish and which will have a single central portion or backbone dividing the hull into two separate sections.

A still further object is to place the propellers in such fashion as to secure the greatest emciency and so as to enable the shape of the boat to aid in its own forward motion.

With these and other objects in view, which will become apparent as the description proceeds, reference is had to the accompanying drawing, in which- Fig. 1 is a side elevation of a hull embodying my structure;

Fig. 2 is a bottom plan view thereof;

Fig. 3 is a front end view;

Fig. 4 is a stem end view;

Fig. 5 is a cross-sectional view taken on the and have left out the superstructure, compartments and other conventional structure which may be varied at will without changing the essential principles involved in the construction of my boat.

In building the hull I provide a central backbone or dividing member I!) which may have a T-bar I l at its top so positioned as to be flush with the bottom of the deck to act as a supporting member therefor. The forward portion l2 of the member I0 constitutes the prow and the lower portion I4 the keel. The member [8 extends throughout the length of the boat from the bow IE to the stern It. While I have shown this member as one continuous piece, it will be appreciated that it may be built up of a member of pieces welded, riveted or otherwise fastened together.

The sides of the boat 20 and 2| taper rather sharply from the bow l to the section 22 adjacent the motors 23 and 24, and then gradually to the stern IS.

The bottom of the boat forwardly of the engines consists of two triangular sections 25 and 26 which join the sides 20 and 2t and the central backbone l0. Rearwardly of the engines the bottom plates 21 and 28 join the sides 20 and 2| with the central backbone Ill, sloping upwardly toward the stern l6 and having their outer edges tapering toward the central backbone It].

It will be perceived that the hull is widest at the point 30 adjacent the. engines and. that sloping panels 3| extend downwardly from the bottom of the boat along the central backbone ill to position the propeller 32, 33, 34 and 35.

The panels 3| join a plate 36 under the engine-room which is substantially rectangular in shape and which is divided diagonally by the lower portion of the backbone ll) forming the keel I4. The propellers 32 and 33 extend forwardly of this section, while the propellers 34 and 35 extend rearwardly. The forward and rear propellers on each side of the boat may be turned by the same engine.

A conventional rudder 31 is provided at the stem [6 to steer the boat. It will be further appreciated that in view of the engine and propeller arrangement the engines may be used in maneuvering the vessel.

It will be seen that my construction practically amounts to two boats in one separated by the central backbone which constitutes the prow and keel. Openings may of course be made within the boat through this member to allow passage below deck from one side to the other.

The sides and bottom of the hull tapering to the rear aft of the engines offset the resistance caused by the water pressure at the bow and tend to enable its movement through the water. Because of the lack of pre-formed or shaped plates, economy in construction is effected and considerable time can be saved in the building of the hull.

As has previously been set forth, the superficial and conventional features, which may be varied at will, have not been shown in this application, such as the deck and supporting structure for the fastening of the plates, the principal feature of my invention being the use of the central supporting and dividing member and the flat plates constituting the sides and bottom of the boat.

I claim:

1. A ship hull including a central back bone forming the prow and keel and dividing the hull longitudinally, a bow formed of four triangular flat plates, two of said flat plates being fastened to said central back bone to form the bottom of said bow and the other two of said triangular plates engaging the first-mentioned plates to form the sides of said bow, flat bottom and side plates, said bottom plates being fastened to said control back bone above the keel portion thereof and tapering rearwardly toward the stern, and

said side plates engaging said bottom plates and tapering upwardly towards said stern.

2. A ship hull including a member forming a central back bone extending from a point flush with the deck thereof below and beyond the hull to form a prow and keel and dividing the ship longitudinally, a bow formed of four triangular flat plates, two of said flat plates being fastened to said central back bone to form the bottom of said bow and the other two of said triangular plates engaging the first-mentioned plates to form the sides of said bow, flat bottom and side plates, said bottom plates being fastened to said central back bone above the keel portion thereof and tapering rearwardly toward the stern, and said side plates engaging said bottom plates and tapering upwardly towards said stern.

ERNEST BORNSCHEUER.

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