US926551A

US926551A - Gun carriage or mounting.

Info

Publication number: US926551A
Application number: US33642306A
Authority: US
Inventors: Arthur Trevor Dawson; George Thomas Buckham
Original assignee: Vickers Sons and Maxim Ltd
Current assignee: Vickers Sons and Maxim Ltd
Priority date: 1906-09-27
Filing date: 1906-09-27
Publication date: 1909-06-29
Anticipated expiration: 1926-06-29

Description

A. T. DAWSON & G. T. BUGKHAM. GUN CARRIAGE 0R MOUNTING.

. APPLICATION FILED SEPT. 27, 1908. 926,55 1. Patented June 29, 1909.

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' GUN CARRIAGE 0R. MOUNTING.

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GUN GARRIAGE 0R MOUNTING. APPLICATION FILED SEPT. 27, 1906.

Patented June 29, 1909.

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Avhich great stability is required, as V in UNITED STATES PATENT EPIC! ARTHUR TREVOR DAWSON AND GEORGE THOMAS BUOKHAM, OF WESTMINSTER LONDON, ENGLAND, ASSIGNORS TO VIOKERS SONS & MAXIM, LIMITED, OF LONDON, ENGLAND.

GUN CARRIAGE OR MOUNTING.

Application filed September 2'7, 1906.

rovements Relating to Gun Carriages orllountmgs, of which the following is a speci fication.

This invention relates to gun carriages or mountings particularly those of the kind that are employed for short guns and in mountain-gun carriages.

Accordingflo our invention the recoiling gun-cradle comprises two long sliding pieces or skids whiclr are laterally arranged with respect to the casing of the recoil buffer and return springs andqvhich are adapted to slide on guides with which the said casing. is fur-. nished, the arrangement being such as to reduce the bending stresses in the cradle to.

the smallest degree. The said buffer and spring casing has a depending pivot-pin sup ported by a traversing bar or frame provided at its forward'part with bosses which are bored out to. fit the axle-tree. The gun is moved laterally around the'aXis of the depending pivot-pin by means of traversing gear carried by the said traversing bar or frame, and is moved vertically around the axis of its trunnions by means of elevating gear carried by the trail.

In order that our said invention may be clearly understood and readily carried into practice we will describe the same more fully with reference to the accompanying drawings, in which:

Figure 1 is a side elevation of a gun and its mounting or carriage constructed in accordance with our invention. Figs. '2 and 2 are respectively a detail plan and a partial trans verse sectional elevation of the bracket by which the forward part of the gun is sup- .ported on the skids. Fig. 3 is a side elevation of a portion of the carriage or mounting drawn on a somewhat larger scale, and showing the elevating gear and the traversing gear. Fig. 4 is a plan of the parts shown in Specification of Letters Patent.

during the recoil.

Patented June 29, 1909.

Serial No. 336,423.

Fig. 3, with the gun and the casing of the recoil buffer and return springs removed and a portion of the trail broken away on one side. Fig. 5 is a vertical section taken approximately on the line 11 of Fig. 3. Fig. 6 is a longitudinal section of the recoil buffer and return spring casing; Fig. 7 is a cross section of the same taken on the line 2-2 of Fig. 6, and Fig. 8 is a sectional end view as seen from the right of Fig. 6. Fig. 9 is a view showing the relative position of the parts of the buffer piston when in the firing position.- Fig. 10 is a view of the piston at the commencement of the recoil movement. Fig. 11 is a view of the buffer of the piston Fig. 12 is a view of the piston at the commencement of the return movement, and Fig. 13 shows the relative position of the parts during the return movement of the gun.

A is the gun.

B is the guncradle to which the gun is attached and with which it slides.

C is the trail.

D is the traversing bar or frame and D D are its trunnions.

E is the hand wheel of the elevating gear and F the hand wheel of the traversing gear.

G is the buffer and return spring casing rovided with lateral guides g, g for the skids n b b of the gun-cradle B to slide upon. The said casing is supported in the traversing bar by the pivot D The gun is supported at its breech end by sliding blocks 5 fitted to the skids b and is connected near its forward or muzzle end to a bracket 5 also forming part of the skids b, said bracket being so situated that it does not overhang the end of the spring casing at any point of recoil. The skids b are firmly connected together at intervals by cross pieces or transoms 5 as well as by the aforesaid bracket 5 and by a cross-head b at the rear end of the skids; to this cross-head the 'buifer cylinder g is also firmly connected.

The said elevating gear comprises two concentric or telescopic screws 6 e of which the outer one 6 is carried by a stationary nut e mounted in an oscillatory bracket 6, and the inner one 6 is coupled at its upper end to the elevating pin a which is carried by the aforesaid traversing bar'or frame D. The outer screw 6 is revolved in the stationary nut by means of a bevel wheel 6 carried by a tubular shaft or boss 9 which surrounds the outer screw and has an internal feather a engaging with a corresponding lon itudinal groove The outer screw in the said outer screw. and bevel wheel thus revolve together without impeding the longitudinal moveineiit of the outer screw within the tubular shaft or boss 6 that carries the bevel wheel as is Well understood. The outer screwtherefore acts l as a revolving nut with respect to the inner screw 6 which is prevented fro ni'evolving by the elevating pin 6 with whichi't engages at its upper end as aforesaid Motion is i111- parted to said bevel wheel 6 from 'a shaft E" carried by bracket con the trail, which shaft has at its outer end the hand ivhee'l E for actuating it and at its inner end a bevel pinion 'e which transmits motion to the said bevel wheel e as hereinafter explained.

The aforesaid elevating screws and the bevel wheel a whiclrdrives them are carried by the aforesaid oscillatory bracket e which has hollow trunnions ca-nee by appropriate pins or long bolts e projecting transversely toward each other from opposite sides of the trail to which they may be connected by de tachable means. This osci'lla't o'ry bracket '5 thus permits the elevating screws 'to adapt themselves to the various inclinations their axes assume in changing the elevation of the gun. By reason of the oscillations of the said oscillatory bracket e? it will he obvious that the aforesaid bevel pinion 'e on theelevating shaft cannot be arranged to gear di rectly with the bevel wheel 'e ftha't actuates the outer elevating scre w We therefore inter ose between said bevel pinion and bevef wheel, an idle bevel wheel a (Figs. 3 and 5) which gears with both and is so situated that its axis of rotation is coincident with the axis of oscillation of the said bracket e. In this manner the various bevel wheels will always maintain their correct engagement, the inclination of their toothed peripheries converging to a common point.

Y The traversing gear comprises a screw F which engages with an internally threaded nut f provided with 'a prolongation f terininating in an eye f through which passes a corresponding lug'g on the buffer and spring casing G. The nut f slides, and the screw F rotates in a box F which is pivoted at F are bracket D secured to the traversing bar or frame D. The traversing screw F is provided with acolla'r F, and an internally threaded capfF is screwed upon the outer end of the boxFa'nd thuscooperates with the outer end ofthe latter to prevent .tudinal movement of the traversing 's'ere'w.

The box F is provided with a graduated scale F (Fig. 4) which in conjunction with 5 I l v 'liXL an index arm or imger on the buffer and spring casing G will serve to indicate the degree of traversing movement imparted to the gun by the actuation of the traversing gear.

The cylinder gr of the recoil buffer is surrounded by the return springs g which are incl'o'sed by the casing G as is well understood. The said buffer cylinder g is fitted with a shoulder g at its front end, by means of which it acts as a compressor rod for the springs. At the rear end, the bufie'reylinder is in the form of a hollow screw 9 passing through a sleeve nut g, which has a shoulder g to hold the springs in place on the buffer cylinder when the gun is dismantled for transport by mules. The sleeve-nut g is for t lie 'iu'rpose of putting the initial coin- 'pression on the springs. It is secured to the aforesaid cross-head b by an interrupted screw and is prevented from turning by a spring pin 9' (Fig. 1). The holes g for filling the bui lercylind'er with liquid are at the rear end of the cylinder, thus the filling and also the. initial 'coiiipres's'ion of the springs may both be effected at the breech end of the gun. The holes g are closed by means of plugsgr as. shown in Fig. 4.

The piston rod oi the recoil buffer passes through a stuffing box and gland :1 at the front end of the buffer cylinder, and is secured to a cap 9 which 's'crews'onto the front end of the return spring case G with an inte'rriip'ted thread, aspr'ingfca'tch g insuring that it. always oecupies the same position relatively to said spring ease. The piston consists of three parts, ,9 9, one (9 fixed to 'or formed solid with the piston rod, one (9 free to turn angularly'on the rod, and one. (g free to move longitudinally against the resistance ofaspiral 'spriiig'g ""o1i the roar. Each [of said portions has ports 9 in its cir'cuii'i'feienee, and the a'ngularl'y 'inovable party? has a projection which fits into a rifled grotv'e which formed in the cylinder. When in the firing position, the ports. in the fixed part '9 and a'ngu'larly mov'able part T9 cement, but are almost closedby the sliding part g asshown in Fig.

9. Duriiigthe recoil of the gun and cradle the liquid passes t'ln'oug'h the ports in the fixed and angularly movable parts, and forces back the sliding part untilan opening suff ciently large for thees'cape of the liquid has been obtained. The angular'ly movable part g is also moved by the rifled groo'vea'nd gradually closes the said'opening bysetting the ports odtof'cofiicidence and thus causes :t'he bufier-pis'ton to exert resistance to the recoil movement, sueh resistanee varying with the "stability of the carriage Figs. T0

and 11. on the retiiin motion of thegun and'cradIe'after recoil, thesliding 'part g of the piston forced by its'spring'agaiiist the angularly mo'x'mbie part, which movement causes a gradual cut oil of the flow ofliq uid asthe'nd ofthereturn motion'is'heing' conipleted, thus permitting the return of the gun without shock Figs. 12 and 13. The said sliding part of the piston may have extra openings to facilitate the flow of the liquid past 1t.

We would here remark that we do not intend to include in our present claiming clauses the formation of a buffer piston with three ported-members of which one is angularly displaceable during the recoil and return movements of the gun, as we have already disclosed such an arrangement. Neither do we intend to include telescopic screw elevating gear connected at its upper part with a traversing bar or frame and at its lower part supported in an oscillatory bracket, as such an arrangement has also previously been dis closed by us.

What we claim and desire to secure by Letters Patent of the United States is 1. In a gun carriage or mounting, the combination with the recoiling gun and the casing of the recoil buffer and return springs, of a pair of skids arranged one on each side of said casing, guides on said casing for the skids to slide upon, a bracket on said skids for supporting the gun near its forward end 1 oint of recoil, means or/nozzle and so situated that it will not overhang the buffer and s ring casing at any or connecting the reech end (if the gun to said skids, trans verse pieces or transoms for connecting the skids together, a sliding cylinder of the buffer and spring casing, means for connecting the skids to said sliding. cylinder, and means for supporting said casing in the carriage or mounting with a capability of lateral and vertical movements, substantially as described.

2. In a gun carriage or mounting, the combination with the recoiling gun and the easing of the recoil buffer and return springs, of means whereby the said gunis supported by and adapted to recoil on said casing, a traversing bar or frame trunnioned in the carriage or mounting, telescopic elevating screws pivotally connected respectively with the said bar or frame and the carriage or mounting, a nut engaging with the outer one of said telescopic screws, a bevel wheel on said nut with which gears an idle bevel wheel concentric with the pivotal connection of the telescopic screw with the carriage or mounting, a hand actuated spindle mounted on the carriage, a bevel pinion at the inner end of said spindle gearing directly with said bevel wheel, a

ivot depending from the casing of the recoil buffer and return springs and carried by the traversing bar or frame, and means for movingsaid casing about the axis of its pivot for traversing the gun, substantially as described.

3. In a gun carriage or mounting, the combination with the recoiling gun and the easing of the recoil buffer and return springs, of means whereby the said gun is supported by and adapted to recoil on said casing, a traversing bar or frame trunnioned in the carriage or mounting, telescopic elevating screws of which the inner one is pivotally connected by a detachable pin with the said bar or frame and the outer one is carried by an oscillatory bracket detachably connected with the carriage or mounting, a nut carried by said oscillatory bracket and engaging with the outer screw, a bevel wheel on said nut with which gears an idle bevel wheel concentrio with the axis of the oscillatory bracket, a hand actuated s indle mounted on the said carriage, a beve wheel at the inner end of said pinion gearing directly with said idle bevel wheel, a pivot depending from the casing of the recoil bufier and return springs and carried by the traversing bar or frame, and gearing for moving said casing about the axis of its pivot for traversing the gun, substantially as described.

4:. In a gun carriage or mounting, the com- 1 bination with the recoihng gun and the easing of the recoil buffer and return springs, of means whereby the said gun is supported by and adapted to recoil on said casing, means for supporting said casing with a capability of lateral and vertical movements in the carriage or mounting, a sliding cylinder for the buffer and spring casing, a hollow screw attached within the rear end of the said sliding cylinder, return springs mounted upon said cylinder, a sleeve nut mounted on said hollow screw and adapted to be adjusted thereon for exerting the initial compression on the return springs, means for detachably connecting said sleeve nut with the gun, a shoulder upon the sleeve nut against which the return springs abut at the rear, and means for preventing longitudinal movement of said shoulder substantially as described.

In testimony whereof wehave hereunto set our hands in resence of two subscribing witnesses this e eventh day of September ARTHUR TREVOR DAWSON. GEORGE THOMAS BUCKHAM. IVitnesses:

HENRY KING, ALFRED PEAKS.