US345744A - vayasseur - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. J. VAVASSEUR.

GUN MOUNTING.

Patented July 20, 1886.

2 Sheets-Sheet, 2.

(No Model.)

J. VAVASSEUR.

GUN MOUNTING.

No. 345,744. Patented July 20, 1886.

Wzbzwemr UNITED STATES PATIENT OFFICE.

JOSIAH VAVASSEUR, OF SOUTHWARK, COUNTY OF SURREY, ENGLAND.

GUN-MOUNTINGL SPECIFICATION forming part of Letters Patent No. 345,744, dated July 20, 1886.

Application filed February :6, 1886. Serial No. 193,289. (No model.) i

training-gear in the same way as an ordinary slide. There are standards upon this lower portion 'of the mounting, and these receive trunnions formed upon aguide-frame or truntravel in the guides of the nion-frame within which the gun, which is without the usually-provided trunnions, is able to recoil. At its fore end the guide-frame carries an armor-plate shield with a hole or embrasure through which the gun projects. The trunnioned guide-frame at its rear end is supported by elevating-screws passing through trunnion-nutsjointed to the guide- 'franie. On the elevating-screws at their lower ends are beveled pinions engaging with corresponding pinions upon a horizontal axis, which receives its motion from a hand-wheel through suitable gear; or, in place of employing elevating-sorews with nuts, racks and pinions may be used, but less conveniently. The recoil of'the gun is controlled by hydraulic compressors. The cylinders of these are preferably secured to the gun by clips passing around it. The piston-rods pass out from the cylinders at their fore ends, and are fixed to the armor-plate shield or to the fore part of the trunnioned, guide-frame. I Springs are also provided which are compressed by the gun when it reooils. The springs are arranged upon rods or spindles fixed to the armor-plate shield, and lugs upon the clip which secures the'hydraulic cylinders to the gun abut upon these springs. Preferably the compressorcylinders'are secured one on either side of the gun, andthe cylinders form the blocks to trunnion frame whenthe gun recoils, and afterward returns by the operation of the springs. The'buflersprings are of sufiicient power and range to return the gun to the firing position, even when elevated to ahigh angle, and to maintain it there. Thefiring position to which the gun is brought by the reaction of the springs is controlled by stops fixed to the shield or to the trunnion or guide frame, and these stops are adjustable, so .that when the gun is forward the balance of the parts about the trunnions may be such as to admit of the gun being elevated or depressed by rocking the trunnioned frame bya moderate force applied to the elevating-gear. In this arrangement it will be seen that the recoil in no way interferes with the elevating-gear, and takes place in an axial direction, whatever may be the position of the gun when it is fired. To con trol the return of the gun after recoil Iprovide onone of the pistons of the hydraulic compressors, on the side opposite to the pistonrod, a trunk of larger diameter than this rod. This trunk passes through the end of the cylinder by a suitable packed joint. As the trunk entersthe cylinder during recoil some of the liquid'contents is necessarily ejected. I provide a passage longitudinally through the trunk, by which this liquid passes out. The other piston of the hydraulic compressor I also, in like manner, provide with a trunk; but in this case the trunk is of smaller diameter than the piston-rod, consequently when, during therecoil, the piston-rod emerges from the cylinder, although the trunk at the same time enters a void, space is left within the cylinder, or would be left if provision were not made to fill it. I make use of this space to receive the liquid ejected from the other cylinder of the hydraulic compressor. The liquid enters the receiving-cylinder by a passage through the trunk similar to that which leads the liquid out of the other cylinder. I connect the two trunks by apipe, in the course of which a valve-box is provided containinga valve. This valve allows the ejected liquid to pass freely from cylinder to cylinder during recoil; but'it prevents return when the gun tends to move in the opposite direction. The gun cousequently'cannot run out until this valve is lifted, or'until a by-pass is opened for the liquid, which is usually more conve ient.-

In order that my said invention may be most fully understood and readily carried into effect, I will proceed to describe the drawings hereunto annexed. In the drawings, l igga re 1 is a side view of agun-mounting. Fig. 2 is a plan of same. j

, on which'the gun is mounted. The mounting may alsobe arranged to work on a front pivot.

- The under frame, a, is supported on trainingrollersd, and is trained from thehandwvheel through spur-wheels cc e, which drive the on the tubular pivot b; On the axles of the -training-rollers (Z are fitted clipsf, to prevent the lift of the mounting when the gun -iired. On the base aare placed standards r ceivc trunnions it, formed upon a guide-frame,- III-7 within which the gun 2' can recoil. The gun is made without trunnions, and is held in a strap, 7:, forming part of the slidingblo'cksk. The trunnion guide-frame h, while adaptedto rock, docs notreeiprocatc. It is fitted, with f guiding-tongues h",on which theblocks 7c work,

and these serve to keep the two parts or opposite sides of the guide-frames from spreading apart out of position .when thc gun is fired. At its fore end the t'ruunioned cradle-like guide-frame I! carries an armor-plate 13, pro

vided with a hole or embrasure, t, through which the gun projects.

The rocking non-re.

- eiprocating truunioned guide-frame atits rear end is supported by clcvating screws m, passing through trunnionnuts m, jointed :to the guide-frame h. at its upper part- The nutsm aresplit, so that by means of'thc clamp-nuts uni-any play-due to wear may be suppressed.

The elevating-screws work in bearingsm, ca

pable of turning on the pivots on, carried in "liie'arings in the standard y; The lower. ends.

of the elevating-screws are provided with Q 'bevel-piiiions in", engaging with 1 corresponding pinions m upon the horizontal shaft m.

This shaft is carried inbearings, those at the outer ends being formed on m, and-the inner bearing, on, being keyed on the endsof the pivol's m,so that the whole of these hearings H and the shaft m with the bevel-wheel turn on the pivots-m, following the fore-and-aft move- I inent given to the'screws m as the nutsmwork up and down in as circular'path described. Motion is given to the screws-n1 from the handwvhcclm"; placed at the end of the shaft in'" suflicient'ly from the center of thctrunnions Ii.

to thcrrear to=bc clear of the gun 'atthe end of recoil. .fllie shaft mf drives the bevel-pinion m, gearing with the corresponding pin ion m" on the-horizontal shaft m. The shaft m is by preference made so as to be readily it is clamped by the bolt m. The bearing m for theishaft m is formed on the innerlbearing,

721 of the horizontal shaft m In place of using screws for elevating, as

shown iby these drawings, racks and pinions may be, employed, but not so conveniently.

- 7 The recoil of the gun is controlled by hydraulic compressors, the cylinders of which are secured to the gun and recoil with it. The

' cylinders may either be formed in one piece with the straps 7c and guide-blocks 7;, or may be inserted in those blocks and secured by being screwed into them, as shown, or inany.

equivalent way. The piston-rods a pass out of the cylinders at the fore end, and are Secured by the nuts a n to the armor-plate t, or

they may be secured to the fore end of the I guide-frame Ir. worm 0', gearing with the worm-wheel 0", fixed The pistons and valves n", for controlling recoil, I make by preference according to my well-known system.that is to say, I provide Z passages in the pistons and disks to cover these I passages; VVheu the piston movesalong the provided with trunnion-bearingsg, which re- 2 cylinder, the disk is turned around upon the piston by the operation of rifle-grooves with- 1 inthe cylinder, so that, during recoil the pasi sages are progressively closed. Both the piston-rods are arranged to act in'tensiou during recoil, and, in order to keep the cylinders full ing the gun in at the end of recoihand to control the speed atwhich it is to return to the firing position, I make on one of the pistons at, on the side opposite to the'piston-rod, a trunk, or, of larger diameter than the red at. T he trunk n passes through thc'end of the cylinder by a suitably-packed joint, 11.

As the trunk a enters the cylinder during recoil some of the liquid contents is necessarily ejected. I provide a passage, a longitudinally through .the trunk, by which this liquid passes out.

The piston a of the opposite hydraulic cylinder I also in like manner provide with atrunk, a; but in this case the trunk is of smaller diameter than the piston rod a, consequently,'when*during' the recoil the piston-rod it emerges from the cylinder, although the trunk m at the'sainetime enters a void, space is left within the cylinder, which space is employed to receive the liquid ejected from the other cylinder.', The liquid passes to the receiving cylinder during recoil by thepassage it through the connecting-pipe a to the passagenin the trunk 12". The relative volumes of the trunksn n are arranged so'that their sum is equal to the'volunues of the two piston-rods a and their difference as small aspossible, regard being had to the pressure generated inthe receivingcylin'der when-the gun is held in'at the end of recoil. In-the course-of the connecting-pipe I fit avalve-box, n, havingra .valve, it, held lightly on its seat by a-springgso that itrises and allows the liquid to pass freely to the re- Iof liquid, and also to provideameans of holdceiving-cylinder during recoil,- but closes and prevents its return whenjthegun tends to-run out. The gun is consequently held in and cahnot run out until the valvea islifted; butin order to avoid disturbing this valve I provide a by-pass withascrew-plug, a, in apassagecommunicating with the passage or, and entering the valve-box below the valve a"; By raising the screw-plug n the liquid in the receivingcyliuder can pass back to the opposite cylinder, and the gun may go out; or, if the screwplug is closed before firing, the gun will remain in. The mounting is arranged so that at all angles of elevation the gun recoils in the line of fire. To run the gun out again, springspare provided. These are compressed during recoil by means of the brackets 1), formed on the straps or sliding blocks k They are arranged upon rods p secured at the fore end to the armor-plate i or may be secured to the guideframe 71/. The necessary compression is given to the springs p to keep the gun in the firing position at the greatest angle of elevation and insures its running out by means of the nuts 1). A plate, 1), secured to the guide-frame h supports the rear ends ofthe rods 11 The firing position to which the gun is brought by the reaction of the springs is controlled by the adjustable stop q,(more or less,) fitted t0 the shield 15 or placed'in any other suitable position. A circular shield, r, with port 1', for the gun to pass through, is shown secured to the standard 8 by side wings, r, giving additional lateral protection. Hinged doors 1- are provided in these wings to give access to the front of the mounting. It is so arranged that when the gun is in firingposition the balance of the parts about the truffnions h may be such as to admit of the gun being elevated or depressed'by a moderate force applied to the elevating-gear. It will also be seen that the recoil of the gun in no. way interferes with the elevating-gear.

forth, of the under frame, atrunnioned frame having its trunnions mounted in bearings of the said under frame, the truunionless gun within the trunnioned frame and recoiling along it, and hydraulic compressors which con trol the movement of the gun, as set forth.

3. The combination, substantially asset ,forth, of the under frame, the trunnioned frame having its trunnions mounted in bearings of the said under frame, the trunnionless gun within and rccoiling along the trunnioned frame, the springs which return the gun to the firing position, and lhe'hydraulic compressors for controlling the movements of the gun, as set forth.

4. The combination, substantially as set forth, of the under frame, the trunnioned frame having its'trunuions mounted in bearings of the under frame, the t'runnionless gun within and rccoiling along the trunnioned frame, and the elevating-gear which connects the trunnioned frame and the under frame.

5. The combination, substantially as set forth, of the under frame, the trunnioned frame having its trunnions mounted in beau ings of the under frame, the armor-plateshield fixed to the trunnioned frame and partaking of its movements, and the trunnionless gun Within and recoiling along the frame.

6. The combination, substantially as set forth, of the trunnionless gun, the trunnioned trunnioned frame within which the gun is mounted and- JOSIAH vAvAssnUn.

Witnesses:

HERBERT E. DALE, W. JAMES SKERTEN.

Both of 17 Graccchm'chflt, [ma/n, (C

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