US629426A

US629426A - Antifouling coating for metal structures.

Info

Publication number: US629426A
Application number: US00000000A
Authority: US
Inventors: G D Coleman
Original assignee: Individual
Current assignee: Individual
Publication date: 1899-07-25
Anticipated expiration: 1916-07-25

Description

UNITED STATES ARTHUR TREVOR DAWSON AND GEORGE PATENT OFFIcE.

THOMAS BUG-KHAN, or LONDON,

ENGLAND, ASSIGNORS TO THE VICKERS, SONS & MAXIM, LIMITED, OF

SHEFFIELD, ENGLAND.

BREECH MECHANISM FOR BREECH-L OADING ORDNANCE.

SPECIFICATION forming part of Letters Patent No. 629,288, dated July 18, 1899. 8 Application filedDecember 13, l898.- Serial No. 699,164. No model.)

To (IJZ 1071 0761, it may concern.-

Be it known that WB,ARTHUR TREvoR DAW- son and GEORGE THOMAS BUCKHAM, citizens of England, residin g at No. 28 Victoria street,

\Vestminster, London, England, have invented certain new and useful Improvements in Breech Mechanism for Breech-Loading Ordnance, (for which applications for patents have been made in Belgium, dated October 1o 27, 1808, No. 108,523; in France, dated October 27, 1898, No. 270,319; in Great Britain, dated October 27, 1898 No. 22,606; in Italy, dated October 31, 1898, he. 14,828, and in Sweden, dated October 29, 1898, No. 1,676,) of which the following is a specification;

This invention has forits object to improve the mechanism of the breech-loading ordnance for which Letters Patent Nos. 602,785 and 610,110 were issued April 19, 1898, and

August 30, 1898, respectively.

The breech mechanism to which our invention is applied is of the kind'in which the breech of the gun is closed by a screw-plug which has interrupted or segmental threads 2 5 or rings and is locked or unlocked by a partial rotation on its axis. This plug is carried on a swinging arm or carrier which is hinged to.one' side at the breech of the gun and is moved by a hand-lever'or by worm-gear k worked by hand. I

The form of obturator which we em ployis such that the breech-plug can be swung out of the gun without any longitudinal vwithdrawal directly after it is unlocked.

.35 We shall describe our invention, referring to the accompanying drawings.

Figure 1 isa front View, and Fig. 2 is a plan, of the carrier and breech mechanism. Fig. 3 is a part section on the line 3 3 of Fig. 2, and Fig. 4 is an elevation of part of the breech of the gun with the plug and carricriu sec tion.

A is thecarrier, and B the breech-plug, which are shown in the open position by the 5 dotted lines" A B in Fig. 2, the carrier swinging on its hinge-pin C. On this pin, about midway of its height, we fix a toothed segment 1), which gears with a segment of a pinion E, pivoted in a recess in the carrier. Part of 8 5o thc'pcriphcry of the pinion E has skew-teeth gearing with similar teeth on a pinion F, which -.is also pivoted in arecess of the carrier, so that it'can revolve ina plane parallel to the breech-faceof the gun. From the-pinion F projects a short arm G, having a pin f connected by a link H toa pin 1), projecting rearward from the face of the breech-plug. The link H and the short arm G are so arranged as to be ina nearly-st raightline when the breech is locked, the pln f being then somewhat past the dead-center and the link H bearing against the upper side h of the recess of the carrier in which the parts are accommodated. Thus when the breech is closed the breech-plug is locked against any tendency to become unlocked by the shock of the explosion. I

The hinge-pin O, on which the carrier A is fixed, may be rotated by hand or by wormgear K, as-shown.

When the firing-gear L is of the kind described in the Patent No. 610,110, the nut and slide are so arranged that the slide instead of moving vertically down to cock the firing-pin for safety is moved horizontally toward the pivot of the carrier. In order to effect this movement, we employ a connecting-bar M, sliding in a groove on the rear face of-the'carrier A and having its one end connected to the slide of the firingear by a spring-pin m, and at its other end there is a second spring-pin n, which projects forward into the recess inthe carrier in which the pinion F is pivoted, so as to enter a cam-slot N, formed in the rear part of the arm G. This cam-slot is so formed as to give the connecting-bar M a very quick motion toward the pivot of i the carrier during the first part of the movement of the arm G before the breech-plug is unlockedthat is, before the pin f has moved back beyond the dead-center. This insures that the charge cannot be fired except when the breech-plug is locked in the gun. By the continued movement the cam-slot N moves the connecting-bar M of the firing-gear still farther toward the side .of the'gun, causing automatic ejection of the No. 629,426. Patented July 25,1899. 6. D. COLEMAN. ANTIFOULING COATING FOR METAL STRUCTURES.

(Application filed Apr. 11, 1898.)

(No Model.)