US2420492A - Recoil absorber for guns - Google Patents

Description

May 13, 1947. w. M. MARSEILLES 2,420,492

RECOIL ABSORBER FOR GUNS Filed Jan. so, 1945 fi Tjllmeilles IN VEN TOR.

Patented May 13, 1947 UNITED STATES PATENT 1 Claim.

This invention relates to a recoil absorber for various types of guns, large or small.

It is a fact well known that injuries are frequently caused by the recoil of firearms and while this generally happens while large guns are in action, it more frequently occurs in the handling of small arms, resulting in bruising and other injuries of the shoulder, etc.

An object of the present invention is to provide a simple but very efilcient means whereby the recoil can practically be absorbed.

A further object is to provide a device of this character which can be incorporated in gun structures of various types.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

In the accompanying drawing the preferred form of the invention has been shown.

In said drawing Figure 1 is a central longitudinal section through one typeof cannon in which the improvements have been incorporated.

Figure 2 is a section on line 2-2, Figure 1.

Figure 3 is a side elevation of the absorber.

Figure 4 is a rear elevational view showing the breech mechanism of the cannon.

Referring to the figures by characters of reference, l designates the barrel of the firearm which is provided at its breech end with a counterbore 2 providing an interior shoulder 3.

The recoil absorber is adapted to be fitted snugly within the counterbore, as by shrinkage of the barrel about the absorber or by any other means. This recoil absorber includes, in the present instance, a cylindrical block 4 provided with a central bore 5 matching the bore 6 in the barrel. The inner end of this block fits snugly against the shoulder 3 and adjacent to said inner end are radial ports 6 which can be staggered as shown and each of which opens into the inner end of a longitudinal channel I provided in the outer surface of the block and extended to the outer end thereof. These channels are constantly open at their outer or rear ends and are located where they will not be obstructed by the breech mechanism one form of which has been indicated generally at B in Fig. 1 and Figure 4. As shown clearly in Figure 4, the breech mechanism B is formed with a plurality of openings 7 each of which registers with one of the longitudinal channels I, thus permitting communication at all times between the open rear ends of the channels I and the atmosphere.

In practice a shell S is placed in the bore 5. as indicated, a breech mechanism is closed, and

the charge fired in the usual way. The explosion of the charge and the exit of the projectile from the barrel occur almost simultaneously, the projectile leaving the barrel before the force of the expanding gases can be reduced by escape through ports 6' and channels I back through the unobstructed rear ends of the channels to the atmosphere, it being apparent by referring to Fig. 1 that the gases generated by the explosion cannot enter the ports until after the projectile has passed them. As soon as the projectile emerges from the bore, there is a tendency of air under atmospheric pressure to rush into the bore. The air will also enter the bore by way of the channels 1 and ports 6, thereby quickly eliminating any tendency to recoil that might result from the inrush of air at the front end of the gun.

Actual tests have demonstrated the fact that the provision of an inserted block such as herein described operating as explained, results in the elimination of most of the recoil developed by the discharge of a charge within the gun and, because of the radial arrangement of the ports which open into the longitudinal channels, any tendency of the generated gases to escape following the movement of the projectile away from its normal position, is retarded momentarily until the bore of the gun has been cleared whereupon air under atmospheric pressure is enabled to rush into the bore at both ends of the gun with the advantageous result already stated.

What is claimed is:

The combination with a barrel of a gun having a bore counterbored at the breech end of the gun, of means for reducing recoil when the gun is fired, said means including a block fitted snugly in the counterbore and formed with a bore alined with the bore in the barrel and proportioned to hold a projectile and an explosive charge, there being ports radiating from the front end portion of the bore in the block positioned to be bridged by a projectile when in normal position in the block, said block being formed with longitudinal channels in its outer surface extending from the respective radial bores to the breech end of the gun and opening through said breech end to the atmosphere, and means for closing the breech end of the bore in the block.

WILLIAM M. MARSEILLES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,864,374 Romberg et al June 21, 1932 1,757,675 Methlin May 6, 1930 1,469,918 De Maine Oct. 9, 1923 FOREIGN PATENTS Number Country Date 468,583 Great Britain July 8, 1937

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