US2599163A

US2599163A - Ship form

Info

Publication number: US2599163A
Application number: US10709A
Authority: US
Inventors: Costa Leone
Original assignee: W K MAIER
Current assignee: W K MAIER
Priority date: 1941-01-24
Filing date: 1948-02-25
Publication date: 1952-06-03
Anticipated expiration: 1969-06-03

Description

June 3, 1952 L. cosTA SHIP FORM Filed Feb. 25, 1948 INVENTOR LEONE COSTFI Z A IORNEY Patentecl June 3, 1952 UNITED STATES PATENT OFFICE 2,599,163 SHIP FORM Leone-Costa; Cafiido-VigoaSpain; ass'ignorto W. K. vll/Iaier, New York;N.'- Y

Application February 25, 1948; Serial No. 10,709 Y In Germany January 24,1941

SectionLIublic Law 690, 'August-8 1946 Patent expires J anuar-yl24, 1961 wherein, .vindicates the speed of the ships in m./s'ec.', 1 indicates the length of the ship I in meters, and. g indicates the gravity in m./sec.. 2.

A mainobject of the invention is to provide a shipform which affords a small resistance and economic propulsion in smooth water as well as in-rough sea, so thata high average speed of the ship is secured under all conditions.-

The invention is diagrammatically illustrated in the accompanying drawing.

Fig. l is a bow'elevation of a ships form according .to the invention, and

Fig'f'Z is a side elevation of Fig. 1.

In Figs. 1 and 2, the sections of the under-water construction of the ships fore body extending over about 20% of the total length of the ship from the -stem to the region of the first trough of the ships wave system are determined by the direction of radii drawn from a common centre I (of. e? g. Patent 1,736,315). The radii from the centre! determine the form of the under-water frames identified by the letter U (with the exception of their roots) at least up to the water line. Above this line they are continued by transition parts identified by the letter T which connects the under-water frames with the more inclined above-water frames identified by the letter D. The range of these transition parts is confined below by the constructional water line CWL and above by a straight line b forming an angle a of about 7 with the CWL and intersecting the latter at a distance d of about 20% of the total ship length from the stem.

The substantially straight frame sections of the dead work above the line b form an angle of at least 25 with the center line say, i. e. an angle of at least 50 measuring the flare between both sides of the dead work, whilst all under water frames (even the most inclined Nos. 16 and 1'7) are at an essentially smaller angle to this center line mg. The frames of the dead work may be determined by the direction of radii drawn from a common centre II. According to the embodiment shown in the drawing, this centre II is situated farther from the centre line :cy, and closer to the bottom line me, than centre I. Alternatiyely, the frame sections above water may be arranged about parallel to one another or according to any other scheme. Though the frame sections lying above and under water, respectively,

2 t are" preferably straight, they 'may'bea little" curved. At any rate, their transitionintd'the' side and bottom lines, respectively, is effected," as usually, bygradual bending.

The transition parts of theframes confinedb'y' the CWL and the line I) must not necessarily'be curved over their whole'length'but'may alsobe composed of substantially straight frame parts," i

the angleof which relative to the center liners? is considerably greater than that of thefraih'ef parts under water but smallerthan thatofi the frames above.

Even if the under-water frames are very steeply; arranged, the invention permits of hyaroay: namically' satisfactory transitions. to great deadl work frame angles of e. g. to measuring the flare between'both sides. Thus, the fore of a ships hull may be given an optimum forni l with regard to flow towards the screw, "wake dis- 'v tribution," and propulsion. Whilst the natural-de l The ships aft-body may be designed in --anysuitable manner.

If desired, the underwater'frames may-extendupwardly somewhat above theCWL; and the transition parts connecting the under-water frames with the above-water frames may start at a point between the CWL and the line 12. Furthermore, if desired, the above-water frames may extend downwardly somewhat below the line b, and said transition parts may reach only up to a point somewhat below said line b.

It is understood that the drawings illustrate the invention merely by way of example. In any case, whether the frame sections of the dead work frame above the line b are determined by the direction of radii drawn from a common center II as shown in the drawing or whether the frame sections of the dead work are arranged substantially parallel to each other or in any other manner as mentioned above, they are inclined to the center line :r-y at angles which are larger than the angles of the underwater frames. According to the invention, the transition parts connecting the frame sections of the dead work frame with the underwater frames are arranged in the range determined by the CWL and the line D.

W hat I claim is:

1. In the construction of the forepart of a ships hull; a frame, including a plurality of underwater frame sections, a plurality of dead work frame sections and a plurality of transition parts interconnecting said underwater frame sectially to a line intersecting the constructional water line at a distance of about 20% of the total I length of the ship from the stem and upwardly inclined from said point of intersection towards the stem at an angle of approximately 7, and said transition parts being disposed in the zone defined by the constructional water line and the upwardly inclined intersecting line of aforesaid and connecting the upper end of the underwater frame sections and the lower end of the dead work frame sections.

2. In the construction of the forepart of a ships hull; a frame, including a plurality of underwater frame sections, a plurality of dead work frame sections and a plurality of transition parts interconnecting said underwater frame sectionsand said dead work frame sections, said underwater frame sections being disposed in the direction of radii drawn from a first common center below the bottom line and forming angles of less than 50, said dead work frame sections being disposed in the direction of radii drawn from a second common center further away from the vertical center line of said hull than the first common center and closer to the bottom line of said hull than the first common center and forming angles greater than 50", said underwater frame sections extending upwardly substantially to the constructional water line, said dead work frame sections extending downwardly substantially to ,a line intersecting the constructional water line at a distance of about 20% of the total length of the ship from the stem and extending upwardly from said point of intersection towards the stem at an angle of approximately 7, and said transition parts being disposed in the zone defined by the constructional water line and the intersecting line aforesaid and connecting the upper end of the underwater frame sections and the lower end of the dead work frame sections.

3. In the construction of the forepart of a ship's hull; a frame, including a plurality of underwater frame sections, a plurality of dead work frame sections and a plurality of transition parts interconnecting said underwater frame sections and said dead work frame sections, said underwater frame sections being disposed in the direction of radii drawn from a common center below the bottom line and forming angles of less than 50, said dead work frame sections being disposed in the direction of radii drawn from a common center below the bottom line and forming angles greater than 50, said underwater frame sections extending upwardly substantially to the constructional water line, said dead work. frame sections extending downwardly substantially to a line intersecting the constructional water line at a distance of about 20% of the total length of the ship from the stem and upwardly inclined from said point of intersection towards the stem of the ship, said transition parts being disposed in the zone defined by a triangle, including as its sides the constructional water line, the stem of the ship, and the inclined line aforesaid, said inclined line being thelongest dimension of said triangle, said transition parts connecting the upper end of the underwater frame sections and the lower end of the dead work frame sections. 7

LEONE COSTA.

\ REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,113A66 Kloess Apr. 5, 1938 FOREIGN PATENTS i a Number Country Date 467,518 I Great Britain June 18, 1937 529,474 Germany July 14, 1931