US770078A - Magnetic curtain for covering leaks in ships. - Google Patents

Description

PATBNTED SEPT. 13, 1904.

L. KRUGER. MAGNETIC CURTAIN FOR COVERING LEAKS m SHIPS..

APPLIUATION FILED JAN. 29, 1904.

N0 MODEL.

Patented September 13, 1904.

PATENT EETcE.

LUDWIG KRIIGER, OF SONDERBURG, GERMANY.

MAGNETIC'CURTAIN FOR COVERING LEAKS IN SHIPS.

SPECIFICATION forming part of Letters Pat nt N0. 770,078, dated September 13, 1904.

Application filed January 29, 1904. Serial No. 191,208. (No model.)

To all whom it may concern:

Be it known that I, LUDWIG KRUGER, resid ing in Sonderburg, Germany, have invented certain new and useful Improvements in Magnetic Curtains for Covering Leaks in Ships, of which the following is a full, clear, and exact description.

The object of the present invention is a roller-curtain adapted to be quickly rolled down over a hole in the side of a ship produced by a collision, and the edges of said curtain may be provided with steel magnets which keep the edges tightly against the hull of the ship when the same is built of iron. For wooden ships the roller-curtain is employed without these magnets and the waterpressure alone is relied upon to keep the curtain over the leak.

In the accompanying drawings, Figure 1 is a cross-section of a hull with the new rollercurtain in place upon the outside; and Fig. 2 is an elevation of the same, the hole to be covered being indicated by dotted lines. Fig. 3 shows, at a larger scale, a corner part of the curtain; and Figs. 4 and 5 are sections, respectively, on lines A B and C D of Fig. 3.

The roller-curtains, which are preferably carried on board in diflierent sizes, being rolled up in convenient places on deck, consist, essentially, of a rubber sheet or of cloth a, which is provided at the lateral and lower edges with. magnetic plates m. These magnetic plates on are made of two parts connected by a screw, pin, or rivets, or otherwise and clamping between them the rubber sheet a. The outer part is convex, and an inner concave surface is adapted to receive the inner part, which snugly fits therein with its outer convex surface. The cloth is therefore bound in the magnetic plates, and when the iron hull of the vessel attracts the magnetic plates the rubber cloth comes in close contact with the hull.

n represents flat iron bars which extend crosswise over the whole width of the cloth, their ends being located between the magnetic plates, as shown in the drawings.

6 is a strong waterproof fabric with which the surface within the magnetic plates at the border is covered. This fabric is secured by seams h and also by rivets (Z, which are used to secure the bars n upon the rubber cloth. The reinforcement of the rubber cloth a by the bars a and the canvas 2' make the curtain adapted to stand the Water-pressure and to prevent a collapse over a leak-hole of considerable size.

Should after a collision of two vessels a hole be punched in one of them, a curtain of suitable size is secured with its edge at the top railing of the bulwark b and the curtain is rolled down on the outside of the ship, so that the hole is immediately covered. The sides and lower edge will be securely held against the hull, as the magnetic attraction greatly assists the action of thewater-pressure.

Having thus fully described the nature of my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A flexible curtain for covering holes in the side of a ship, composed of a, sheet of rubber reinforced by a plurality of iron bars secured upon said cloth and covered by a canvas, the edges of said rubber cloth being provided with pieces of magnetized steel for the purpose specified.

2. A flexible curtain for covering holes in the side of a ship, composed of a sheet of rubber reinforced by a plurality of iron bars secured upon said cloth and covered by a canvas, the edges of said rubber cloth being provided with pieces of magnetized steel the outer piece being concave and the inner piece being convex snugly fitting in the cavity of the outer piece both being united by screws rivets or the like and clamping between them the rubber cloth as described.

In testimony whereof I affix my signature.

LUDVVIG KRUGER.

In presence of G. HERMES, FRIEDERICH W. MICHELSEN.

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