US351971A - Apparatus for preventing ships from sinking - Google Patents

Description

(N0 Mode 1.)

J. F. FRISBIE. APPARATUS FOR PREVENTING SHIPS PROM SINKING. *Na. 351,971.

Patented Nov. 2,1886.

Fig.5.

N;PETERS. Pholcljlhngnphur. Washingmn. n. C.

. or sinker, B, and attached to the top of the STATES PATENT OFFICE.

JOSEPH F. F-RISBIE, OF BOSTON, MASSACHUSETTS.

APPARATUS FOR PREVENTI NG SHIPS FROM' SINKING.

SPECIFICATION forming part of' Letters Patent No. 351,971, dated November 2, 1886.

Application filed June 9, 1886.

To all whom. ,it may concern:

Be it known that I, JOSEPH F. FRIsBIE, of Boston, in the county of Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in Apparatus for Preventing Ships from Sinking, of which the following is a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same, reference be ing had to the accompanying drawings, form,- ing part of this specification, in which- Figure 1 is a side elevation of my improved apparatus; Fig. 2, a vertical transverse section of the same; Fig. 3, a top plan view of one of the trusses orribs expanded and detached; Fig. 4, a side elevation of the same; Fig. 5, a top plan view of one of the trusses or ribs collapsed and detached, and Fig. 6 2. diagram showing the apparatus in position for use.

Like letters of reference indicate corresponding parts in the different figures of the drawings. My invention relates to that class of apparatus which are employed for preventing ships from sinking when their hulls are accidentally pierced or stove in by collision at sea; and it consisfs in a novel construction and arrangement of parts, as hereinafter more fully set forth and claimed, the object being to produce a more effective device of this character than is now in ordinary use.

The nature and operation of the improvement will be readily understood by all conversant with such matters from the following explanation, its extreme simplicity rendering an elaborate description unnecessary.

In the drawings, A represents the body of the apparatus, which consists in an apron in the form of a sack or bag, and preferably composed of stout canvas or duck. Disposed in the bottom of the body A there 'is aheavy bar body, at either end thereof, there is a cord, 0, one end of which passes down inside the body and is secured to said sinker, as shown in Fig. 1. Arranged transversely in the body A, above the'sinker B, there are a series of trusses, D,which may be secured in said body by lacings, rivets,or in any othersuitable manner. These trusses each copsist of two metal- Ser'ml No. 204,577. (No model.)

lic springs or fiat bars, a: x, which have their ends firmly riveted together, as shown at z. Hinged at t to the center of one of the springs or bars 00 of each of the trusses there is ashort bar or brace, 'm, which is swung around crosswise of the truss when the apron is in use, 'as shown in Fig. 3, and folded flat when not in use, as shown in Fig. 5, thereby rendering the truss expansible.

When the brace m is arranged transversely of the truss,the bars or assume the elliptic form shown in Fig. 3, great strength and rigidity being thereby imparted to the truss; but when it is arranged longitudinally, as shown in Fig. 5, the truss becomes comparatively flexible and occupies much less space than when expanded, thereby enabling the body A to be readily folded and packed or stored.

The object of connecting the line or cord G to the sinker B is to enable said sinker to be raised to any position desired without raising the upper portion of the body A, the lower portion of said body floating as the sinker is raised. It also'enables the sinker to be raised independently of the sack, relieving the strain which would be exerted on the canvas sack if the sinker had to be raised by drawing up the sack.

In the use'of my improvement the apron is 80 prepared to be lowered by moving the braces m into the position shown in Fig. 3, thereby expanding the trusses D, after which it is lowered over the side of the ship by the cords O in such a position as to cover the aperture pro- 8 5 duced by the col1ision,thereby stopping the leak in a manner which will be readily obvious without a more explicit description;

Ido not confine myselfto the use ofthesinker B, as the trusses may be made sufficiently 9o heavy to sink the body, or a sinker of any other suitable form be used. Neither do I confine myself to the use of the brace m, arranged as shown, as any suitable means may be employed for expanding the truss, nor to con- 5 necting one end of the cord 0 to the sinker, as an independent cord may be used for the sinker; or the sinker may be used withouta cord.

Having thus explained my invention, what I claim is 1. In a device for preventing ships from sinking, the combination of the body or sack A, composed of canvas, the truss D, consisting of the bars or, joined at their ends andprovided at the center with the hinged brace m, said truss being disposed within said body, and cords attached to said body for raising and lowering the same, substantially as described.

2. In a device for preventing ships from sinking, the combination of the body or sack A, composed of canvas and provided with the sinker B, disposed in the bottom thereof, the trusses D, consisting of the bars 41, joined at their ends and provided at their centers with hinged braces at, said trusses being disposed within said body, and cords attached to said body for raising and lowering the same, substantial] y as set forth.

3. In a device for preventing ships from sinking, the combination of the body or sack A, composed of canvas, the trusses D, consist ing of the bars m, joined at their ends and provided at their centers with hinged braces m, said trusses being disposed within said body, the sinker B, disposed in the bottom of said JOSEPH F. raisins.

.\\itnesses:

O. M. SHAW, E. L. SAWYER.

body, and the cords G, connected to said body, 2 5 v

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