US2298661A - Ship hull construction - Google Patents

Description

Oct. 13, 1942. A. P. SWANSON 2,298,661

SHIP HULL CONSTRUCTION Filed Aug. 4, 1941 5 Sheets-Sheet l Inventor A from: 1'

1942 A. P. SWANSON 2,298,661

SHIP HULL CONSTRUCTION Filed Aug. 4, 1941 5 Sheets-Sheet 2 Oct. 13, 1942. PI som 2,293,661

SHIP HULL CONSTRUCTION Filed Aug. 4, 1941 5 Sheets-Sheet 3 Q 6 Q a a Q a a e 7 A? e a a e 6 a Q 6 4 Q a a a a 111 m;- 7 6 a Q a a w); iflflya/rwa/fr k e e I 6 Q a A Home Oct. 13, 1942- A. P. SWANSON SHIP HULL CONS TRUGTION Filed Aug. 4, 1941 5 Sheets-Sheet 4 A Home Oct. 13, 1942. p SWANSON 2,298,661

SHIP HULL CONSTRUCTION Filed Aug. 4, 1941 5 Sheets-Sheet 5 A Hon/q 1' Patented Oct. 13, 1942 U NIT ED .S TATE S O FF I-C E SHIP HULL CONSTRUCTION 'Albin P. Swanson, MountJewett; Pa.

ApplicationAngust 4, 1941, Serial No. 405,392

(C'l. i1'1411) 6 Claims.

This invention relatesto new-and useful "improvements in protective construction for the hulls of-ships, the principal object of the invention being to protect the hull of -a ship against -the explosive efiect of torpedoes, mines and other destructiveagents.

Another important object of the'invention is to providea protective construction for-ship hulls which in use will serve to direct the force of an exploding torpedo or mine along'the outer-side of-the-hull.

Other objects and advantages of the invention will become'apparent to the reader of the following specification.

one of the units shown in Figure 4 withthe core removed.

Figure '7 is aside elevational view of one of the cores'for use in the'shell shown in- Figure 6. Figure 8 is a longitudinal sectional view through one of the units-shown in Figure 4.

Figure 9 is a side elevational view of one of the units.

Figure lOis a cross sectional view through "one of the units.

Figure 11 is a section of a twopart core of the construction shown in Figure 7.

Figure 12 is a side elevational view of a section of a two part core constructed for use as shownin Figure9.

Figure 13 is a fragmentary horizontal sectional view through a modified form of construction shown provided with units having right angularly formed ends.

Figure 14 is a fragmentary vertical sectional view showing the units of Figure 13 in end elevation.

Figure 15 is a side elevational view of a core such as is used in the units of the form of the invention shown inFigures 13 and 14.

Figure 16 is a side elevational view of a core divided @di'a'gonally this being a modification of the form shown in Figure 15.

Figure 17 is-.another.modi.fication of the core of .Figurel5 providedwith reinforcing side plates.

Figure 18 is a sidev elevational view of another modification .of-the core shown in Figure 15, this being provided with opposed plates.

-Figure l9-is asideelevational View of one of the cases-with the. nose of a torpedo entered.

Referring to the .drawingswherein like numerals designatelike parts, it .can be seen in Figure lthatnumeral 3 generally refers to a ship hull, while numeral d generally refers to the present invention suitably-secured as bywelding to the lower portion of said hull.

The firstform of the invention is shown in Figures 4-to 10,-inc1usive, and this consists of a shell 5' whi'ch preferably has an outside wall a andan-inside wall D and perhaps a partition 0 to 20 divide the interior into several compartments for holding units 6. These units 6 form the importantpart of the'present invention in that they serve-to deflectthe effect of explosions longitudinally along the outside of the hull instead of directlyagainst-the hull. First, these units serve to cushion or deflect the primary force of the torpedo and as the explosion occurs the explosive force dissipates itself by deflection and in effect against the units which are constructed to absorb and deflect force'to a high degree.

shownin Figures 8,- 9 and-10 each of these unitst-consists of'a case 1 preferably of square cross section and provided with a two-way beveled'end' 8. Theother end of the case is open. The case is stamped or otherwise formed to provide outwardly disposed longitudinally extending ribs 9 and ribs l0 of like formation which extend around the case andto which the longitudinal ribs Sare'connected.

'These ribs meeting each other afford a structure which can be more readily welded together, asit-is intended that the units be welded together in compact assembly as suggested in the drawings.

A core' of wood or some othe cheap material denoted by numeral 1 l' is disposed into the case 1, this core having a double tapered end 12 to fit into the nose part 8 of the shell 1.

A curved plate I3 is secured by suitable means to the butt end of the core I I.

It may be desirable to form the core into two longitudinal sections such as is denoted by reference character I la in Figure 11 in which instance each section Ha will be provided with a curved butt end plate l3la.

Secondly, it may be desirable to substitute plate to to the oblique faces of core sections Hb ,corresponding to the core sections Ila to substitute for the nose portion 8 of the shell I.

' Another form of the invention is shown in Fig- I ures 13 and 14 wherein the numeral 15 denotes a shell having an inner wall d and an outer wall e between which are stacked units generally referred to by numeral [6. These units l6 are somewhat different from the units 6 in that they do not have the pointed ends. Each shell or case [1 receives a core I8 of Wood or some similar cheap material. Each core H! has one end cut off at right angles and has a plate 19 attached thereto while the other end which receives the force of a torpedo or other explosive agent is rounded off and has a curved plate 20' attached thereto.

Obviously, the block or core 18 can be divided into a pair of diagonally cut sections I8a, l8a if desired and provided with end plates l9a and Another form of core is shown in Figure 17 wherein the block is divided diagonally intosections [81), I8b, not only provided with end lates I91) and 20b but also with conformingly out side plates 2|, 22.

Another manner of constructing the block I8 is to divide the block diagonally into a pair of sections I80, I80 and not only providing these sections I80, I80 with end plates I90 and 200, but also with opposed plates 23 and 24 on the oblique opposed faces thereof so that there will be no likelihood of the grains or fibers of the sections interlapping under the effect of an explosion.

It can now be seen that as a torpedo enters the shell the torpedo will strike or be deflected against one of the curved plates I'3 which, in turn, will further have a tendency to deflect the nose of the torpedo, thus preventing the torpedo from getting any closer to the hull of the ship. When the explosion takes place, the effect will be to separate the immediate unit for the compression of the units longitudinally of the outside of the hull as the units immediately located adjacent the explosion have a tendency to wedge inwardly offering strong resistance to the effect of the explosion.

The form of the invention shown in Figure 18 has a similar efiect with the exception that in this instance tortuous routing of the force of the explosion toward the hull is effected by the staggored 0r brick method of arranging the units, and also relying considerably on the primary effect of the curved end plate 20.

Figure 19 shows a torpedo after its nose portion has pushed through the curved plate l3 or wherever a like construction is used and has entered the end portion of the corresponding case 1. Obviously, the corresponding core will offer considerable resistance and the effect of the shell is to limit penetration further toward the hull of the ship.

Figure 3 shows an arrangement for assembling the various units. These units are welded to the hull of the vessel and consist in the use of large units X in conjunction with shorter and narrower units Y and elongated but narrow units Z. The narrow units Y and Z are used between the large units X and interlap the ends thereof in such a Way as to present an interlocking structure which when welded together ofiers considerable resistance against the explosive effect of torpedoes. These units are welded together in an integral assembly.

Reverting back to the structures which include the curved end plate l3, it is to be understood that if the torpedo does not explode immediately upon contact with the curved plate [3, but continues its progress, the shoulders of the torpedo will come in contact with the ends of the case 1 as shown in Figure 19, thereby completely stopping further progress. The diameter of the case 1 should not be larger than 10 inches as the present invention is intended to not only stop objects by deflection, but also ofiers protection against direct penetration of torpedoes.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, claimed as new is:

1. A protective attachment for ship hulls comprising a shell and a plurality of shock absorbing units arranged in the shell, each of the said units consisting of a casing having a transversely square body and a pointed end and a solid core of fibrous material.

2. A protective attachment for ship hulls comprising a shell and a plurality of shock absorbing units arranged in the shell, each of said units consisting of a casing having a transversely square body and a pointed end, a solid core of fibrous material and a force deflecting plate at the other end of the casing, said casing having transverse and longitudinal ribs.

3. A protective attachment for ship hulls comprising a shell and a plurality of shock absorbing units arranged in the shell, each of said units consisting of a casing .and a core, each core being divided diagonally into a pair of sections.

4. A protective attachment for ship hulls comprising a shell and a plurality of shock absorbing units arranged in the shell, said units each consisting of a block of fibrous materialdivided diagonally.

5. A protective attachment for ship hulls comprising a shell and a plurality of shock absorbing units arranged in the shell, said units each consisting of a block of fibrous material divided diagonally, and provided with opposed face plates.

6. A protective attachment for ship hulls comprising a shell and a plurality of shock absorbing units arranged in the shell, said units each consisting of a block of fibrous material divided diagonally and provided with metallic side plates.

what is ALBIN P. SWANSO'N'.

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