US1719597A

US1719597A - Recoil and run-out apparatus for ordnance

Info

Publication number: US1719597A
Application number: US309330A
Authority: US
Inventors: Dawson Arthur Trevor; White James Fleming; Darnell George; Larkins Ernest Edward
Original assignee: Vickers Ltd
Current assignee: Vickers Ltd
Priority date: 1927-08-09
Filing date: 1928-09-29
Publication date: 1929-07-02
Anticipated expiration: 1946-07-02

Description

July 2, 1929. A. T. DAWSON ET AL RECOIL AND RUN-OUT APPARATUS FOR ORDNANGE Original Filed Aug. 9, 1927 2 Sheets-Sheet lll Il July 2, 192,9. A. T. DAWSON ET AL 1.719.597

RECOIL AND RUN-OUT APPARATUS FOR ORDNANCE Original Filed Aug. 9, 1927 2 Sheets-Sheet 9 Patented July 2, 1929.

UNETED ARTHUR TREVOR DAWSON AND JAMES FLEMING WHITE, 0F WESTMINSTER, LONDON, ENGLAND, AND GEORGE THOMAS BUCKHAM, DECEASED, LATE 0F WESTMINSTER, LONDON, ENGLAND, BY GEORGE DARNELL, OF WESTMINSTER, LONDON, ENGLAND, AND ERNEST EDVARD LARKINS, 0F SHEFFIELD, ENGLAND, LEGAL. REPRESENTA- TIVES, ASSIGNORS TO VICKERS LIMITED, OF WESTMINSTER, ENGLAND, A BRITISH COMPANY.

RECOIL AND RUN-OUT APPARATUS FOR ORDNANCE.

Original application filed August 9, 1927, Serial No. 211,736, and in Great Britain January 13, 1927.

Divided and this application filed September 29, 1928.

This invention relates to ordnance recoil and run-out apparatus employing a pneumatic recuperator the interior of which does .not communicate with the interior of the recoil or brake cylinder, that is to say there is no transfer of liquid from the recoil or brake cylinder to the recuperator cylinder during the recoil of the gun.

According to the invention the recuperator cylinder and the recoil or brake cylinder are arranged in line one behind the other and the recoil cylinder or its piston rod,- Whichever moves relatively to the recuperator cylinder, constitutes or is provided with a ram to eiiect the compression of the air within the recuperator during the vrecoil movement of the gun and to effect the runout movement of the gun under the influence of the compressed air after the recoil movement has been completed. The said recuperator cylinder is preferably arranged behind the recoil cylinder and attached to the gun cradle so that it remains stationary during the recoil and run-out movements of the gun.

The air compressing ram VWhich is arranged in front of and in line with the recuperator cylinder may, in one form, be attached to a crosshead which ,is connected by longitudinalrods or links to lugs on the breech ring or' the gun, suitable guides being provided on the cradle upon which this crosshead slides during the recoil and run-out movements oi' the gun. Carried within this ram there may be a sleeve which constitutes the recoil cylinder proper and within which the recoil piston is situated, the rod of this piston projecting through the front end of the said recoil cylinder and being attached to a bracket on the cradle. The rear end of the air compressing ram enters the front end of the stationary recuperator cylinder through a suitable gland and the interior of the said ram and of the recoil cylinder is completely shut oii" from the interior of the recuperator cylinder by means of a wall in the said ram. rlhis wall may have a rearward prolongation forming a cylinder for the reception oi' a run-out retarding ram proj ect-ing rearwardly from the recoil piston.

Serial No. 309 ,330.

In order that the said invention may be clearly understood and readily carried into effect, the same will now be described more 'fully with reference to the accompanying drawings, in which Figure 1 is a vertical longitudinal section of a constructional form of the invention.

Figure 2 is a transverse section taken approximately on the line 2-2 of Figure 1 and viewed from the right.

Figure 3 is a transverse section taken approximately on the line 3-3 of Figure 1 and viewed from the right.

Figure 4 is a plan of Figure 1.

A is part of the gun, B is part of the cradle, C is the recuperator cylinder, D is the recoil or brake cylinder, D1 is the recoil or brake piston, D2 is the rod of this piston, D3 is the air compressing ram which, during the recoil of the gun, enters the recuperator cylinder to compress the air therein, E is a replenishing tank for supplying the recoil cylinder D with liquid and F is the run-out retarding ram.

The air compressing ram D3 is arranged in front of and in line With the recuperator cylinder C and at its front passes through a crosshead DL to Which it is attached by means of a nut di, the said ram having a shoulder Z3 bearing against the rear part of 'the crosshead. This crosshead is connected by two longitudinal rods D5, D5 to lugs A1, A1 on the breech ring of the gun and is guided during the recoil and run-out movements of the gun by means of guides B1, B1 on the cradle B, upon which guides the crosshead slides. The recoil cylinder D is constituted by a sleeve arranged within and carried by the ram D3 with an annular space between them, this annular space communicating at its front end with the replenishing tank E (formed as part of the crosshead) and communicating at its rear end With the interior of the rear part of the recoil cylinder D by means of holes d, l therein. The rod D2 of the recoil piston D1 projects through a gland Z2 at the front end of the cylinder D and is attached to a bracket B2 on the gun cradle. The cylindery D has longitudinal grooves dx, ZX ot' varyports for the controlled flow of liquid from .effective area of the passage.

one side of the piston D1 to the other as is, per se, Well understood.

The recuperator vcylinder C passes through a bracket B3 on the cradle (the aforesaid rods D5, D5 passing through the side portions of this bracket) and is attached by means of a nut 3, the front end of the said cylinder havingal shoulder C1 bearing against the front surface of the said bracket. The front end of the recuperator cylinder C has a gland C2 through which the air* compressing ram Dg enters the said cylinder and the interior of this cylinder is completely shut off' from the interior of the said ram and of the recoil cylinder D by means of a Wall D6 Which is made integral With the ram D3 and has a rearward prolongation d6 (closed at its rear end by a'screwed plug dm) forming a cylinder for the reception of the aforesaid runout retarding ram F Which projects rear- Wardly from the piston D1v as is Well understood. The run-out control eected by this retarding ram may be. varied in accordance With the angle of Aelevation at Which the gun is firing, by means of a tapered plug valve F1 disposed in a passage F2 leading from the rear end of the recoil cylinder to the retarding ram cylinder (ZG. This plug valve is formed on the rear end of a rod F3 which passes centrally through the recoil piston rod D2 and has at its front part a screw-threadedportion f3 engaging With screw threads in the piston =rod so that by angularly adjusting the rod F3 the plug valve F1 can be moved into orv out of the passage Fl as lrequired in order, to vary the The angular adjustment of the rod F3 is preferably effected automatically during the elevation of the gun by suitable means such as those Well known for angularly adjusting a partappertaining to the valve port of the recoil piston.

What We claim and desire lto secure by v'Letters Patent of the United States is l. Inordnance recoil and run-out apparatus, the combination With -the recoil or brake cylinderand the recoil or brake piston forming the elements of the recoilmapparatus, one of these elements being connected to the gun andthe other to the gun cradle, `of a pneumatic recuperator cylinder Whichis arranged behind and in line with the recoil or brake cylinder and the interior of which .does not communicate With the interior of ythe latter cylinder, means for connecting said recuperator cylinder to the gun cradle, a ramon the recoil apparatus element that moves relatively to said recuperator cylinder, said ram effecting the compression of the air Within said recuperator cylinder during the recoil'movement of the gun and eifecting the run-out movement of the gun under the influence of the compressed air after the recoil movement has been completed, a crosshead, means for connecting said ram to said crosshead,

Vmeans for connecting said crosshead to the breech ring of the gun and means for guiding said crosshead on the gun cradle during the recoil and run-out movements of the gun.

2. In ordnance recoil and run-out apparatus, thev combination with the recoil or brake cylinder and the recoil or brake piston forming the elements of the recoil apparatus, one of these elements being connected to the gun and the other to the gun cradle, of a pneumatic recuperator cylinder which is arranged behind and in line With the recoil or brake cylinder and the interior of which does not communicate With the interior of the latter cylinder, means for *connecting said recuperator cylinder to the gun cradle, a ram onthe recoil apparatus element that moves relatively to said recuperator cylinder,

said ram effecting the compression of the air Within said recuperator cylinder during the recoil movement' of the gun and effecting the run-out movement of the gun under the influence of the compressed air after the recoil movement has been completed, a crosshead, means for connecting said ram to said crosshead,y rods for connecting said crosshead to the breech ring of the gun, and means for guiding said crosshead on the gun cradle during the recoil and run-out movements of the gun.

3. In ordnance recoilv and run-out apparatus, the combination With the recoil or brake cylinder and the recoil or brake piston forming the elements of therecoil apparatus, one of these elements being connected to the gun and the other to the giui cradle, of a pneumatic recuperator cylinder Which is arranged behind and in line with the recoil or brake cylinder and the interior of which does not communicate With the interior ofthe latter cylinder, means for connecting said recuperator cylinderto the gun cradle, a ram in the form of a sleeve surrounding 'the recoil or brake cylinder With an annular space between them, means for connecting said ram and recoil or brake cylinder together, said ram'effecting the compression of theair Within said recuperator cylinder during the recoil movement of the gun and effecting the' run-out'movement of the gun under the influence of the compressed air yafter the recoil movement has been completed, a bracket on the gun cradle,

y a rod on the recoil or brake piston passing through the front end of the recoil or brake cylinder, means for attaching the Vfront end of said piston rod to said bracket, a crosshead, means for connecting said ram to said crosshead, means for' connecting said crosshead to the breech ring of the gun, and

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means for guiding said cross head on the gun cradle during the recoil and run-out movements of the gun.

4. In ordnance recoil and run-out apparatus, the combination with the elements claimed in claim 3, or' a gland at the front end of the recuperator cylinder through which the air compressing ram passes and a wall in said air compressing ram for completely shutting oil' the interior of said air compressing ram and the interior of the recoil or brake cylinder from the interior of said recuperator cylinder.

5. In ordnance recoil and run-out apparatus, the combination with the elements claimed in claim 3, of a rearward extension on the air compressing ram forming a cylinder, a run-out retarding ram projecting rearwardly from the recoil or brake piston and entering the last-mentioned cylinder during` the final portion of the run-out movement of the gun, a gland at the front end of the recuperator cylinder through which the air compressingl ram passes and a wall in said air compressing ram for completely .shutting olf the interior of said air conipressing ram and the interior of the recoil or brake cylinder from the interior ot said recuperator cylinder.

6. In ordnance recoil and run-out apparatus, the combination with the recoil or brake cylinder, means for connecting said cylinder to the gun cradle, a recoil or brake piston working in said cylinder, a pneumatic recnperator cylinder' which is arranged loehind and in line with said recoil or brake cylinder and the interior of which does not communicate with the interior of the latter cylinder, means for connecting said recuperator cylinder to the gun cradle, a rain in the form of a sleeve surrounding the recoil o1 brake cylinder with an annular space be tween them, said ram etlecting the compression of the air within said recuperator cylinder during the recoil movement of the gun and effecting the run-out movement of the gun under the influence of the compressed air after the recoil movement has been completed, means for connecting said ram to the gun so as to move therewith, a wall in said ram and means for attaching the rod of the recoil 01 brake piston rod to said wall.

7. In ordnance recoil and run-out apparatus, the combination with the elements claimed in claim G, oi' a run-out retarding ram and means for attaching the latter ram to the gun cradle, said latter ram being disposed in a bore formed in the recoil or brake piston rod.

JAMES FLEMING IVHITE.