US1390447A - Gun-barrel-muzzle steadier - Google Patents

Description

M. L. JOHNSTON.

GUN BARREL MUZZLE STEADIER. APPLICATION FILED sEPT.2I. 191B.

1,390,447'. PatentedSept. 13,1921.

A 7 sa I 5 23 6 l5 lf?` IN VENTOR.

MIL-LARI) L. JUHNSTON ATTORNEY.

BILLARD L. JOHNSTON, OF UTICA, NEW YORK.

GUQLBARREL-MUZZLE STEADIER..

Specification of Letters Patent.

Patented sept. is, 192i.

Application led September 21, 1918. Serial No. 255,165.

T o all whom t may concern:

' Be it known that LMILLARD L, JOHNSTON, a citizen ofthe United States, residing at Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Gun-Barrel-Muzzle Steadiers, of which the .following is a specication, reference being had therein to the accompanying drawing.`

My invention relates to a' gun barrel muzzle steadier, and I declare the following tobe a full, "clear, concise and exact description thereof 'sufficient to enable anyoiklie skilled in the art'to which it appertains to make and use the same, reference being had to the accompanying drawings in which like reference characters refer to like parts throughout the specications.

Theobjebt ot' the invention is to provide a device: that will prevent the jumping of the muzzle upon the discharge of the gun. This result is highly desirable in view of the fact that especially in all high powered rilies, the muzzle of the gun will give a suddent )ump upward immediately the gun is fired. This motion of the muzzle disturbs the aim of the shooter and causes inching. Moreover, it is directly responsible for inaccuracy o f shooting straight. The device here mentioned is intended to correct this evil.

The object will be understood by referring to the drawings in which:

Figure 1 is a perspective view of a firearm, showing the muzzle steadier attached thereto; U

Fig. 2 is an enlarged detail view, showing a vertical section of the muzzle steadier connected to the gun;

Fig. 3 is an enlarged perspective view of the muzzle steadier;

Fig. 4 is a detail enlarged view of an ad- 'justable nut employed;

Fig. 5 is an enlarged view of a front sight,

`*showing certain parts in section, that may be connected to the muzzle steadier.

Referring more particularly to the drawings, the device embodies a cup shaped member 1 which has formed integral therewith and at right angles thereto an elbow 2. The elbow 2 has a central recess and is equipped on its inner surface with left handed threads 3 for attaching the device to the muzzle 4 of a barrel 5 of the firearm 6. The inner surface of the elbow 2 is threaded also with ri ht hand threads 7 for mounting the adjustable nut 8 provided with a counter sunk recess 9 for the insertion of the end of Abarrel 5.

The lower surface of the cup shaped member -1- is closed by the screw threaded head 12 that is provided with a counter sunk slot 13 for the insertion of the end of a suitable tool. The removal of the head 12 will give access to the interior of the chamber 1() for cleaning purposes.

The cup shapedmember -1- has a long narrow slot 14 the lower end of which is rounded out at 16 to form an opening concentric with the bore 11 of the barrel 5 and is somewhat enlarged to permit the passage of a bullet projected from the barrel 5. The slot 14 extends upwardly and along the top surface of the member -1'- for a short distance. t

When the gun is discharged, a part of the gases of explosion will expankl into the chamber 10 of the cup shaped member -1- and, thereby, exert a pressure downward which pressure will counteract the tendency of the muzzle 4 of the barrel 5 to fly upward.

A novel front sight such as hereinafter described may be attached to the muzzle steadier. For this purpose, the top surface of the elbow 2 is equipped with a hollow boss 20 having an internal,l screw thread aperture for the insertion of the screw bolt 21. The lowermost surface of the bolt 21 rests, when seated, in an aperture 22 formed in the barrel 5 of the firearm 6, whereby to aid in holding the muzzle steadier in proper relation to the barrel 5 of the firearm 6. The upper end of the screw bolt 21 has formed integral therewith a ring 23 with a central orifice 24 for the insertion of the end of a cartridge whichis adapted tobe used to turn the bolt 21 home into the aperture of the boss l2O.

Arms 25-25 extend upward from the ring.

23 and are provided with yielding free ends having teeth 26-26 which fit into a correspondingly formed annular groove in the shaft 27. The lower part 28 of the shaft 27 is corrugated with longitudinal ribs adapted to fit into suitable fissures formed on the inthermore, the shaftl 27 is bent ner 'surface of the arms 25, whereby the shaft 27 can be held at an given angle to which it may be turned witliin the arms 25. Furat an angle to the vertical at 29 and again at 30 to form an offset portion. The upper end of the shaft 27 is tapered and has attached a ball or sphere 31 which provides a front sight for the gun. The sphere 31 is located in the center of a ring 32 having a boss 33 with an aperture extending therethrough and through the ring 32 for the projection of the upper end of the shaft 2.7 upon which 1t 1s mounted to turn. The boss is split and equipped with free yieldingends having teeth 35-35 that engage an annular groove 36in theshaft 27 whereby to hold the r1ng 32 in vertical position.

The offset portion of the shaft 27 permits sight 31 within the adjustment of the front the full the range of positions indicated by and dotted lines in Fig. 5.

The top surfaceof the arms25 may be I equipped with a graduated scale to denote the desired degree of arc through which the shaft 27 is turned to effect a given alinement with respect to the rear sight.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a gun barrel muzzle steadier, -continuous walled depending means connected with the muzzle of said barrel, said means having a chamber and a vent above said chamber whereby the tendency of the muzzle to jump upward is counteracted.

2. In a gun barrel muzzle steadier, a continuous walled dependin gas chamber at-v tached to the muzzle o said barrel, -said chamber having a vent above the chamber whereb the tendency of the muzzle to jump upwar upon. the discharge of the gun' is counteracted.

3. In a gun barrel muzzle steadier, a continuous walled depending cup shaped member having an elbow containing a gas chamber with vent above said chamber, means for attaching said cup shaped member` to the muzzle of the gun, whereby the tendency of the muzzle to jump upward upon the discharge of the gun is counteracted.

4. In a gun barrel muzzle steadier, a continuous walled depending cup shaped member attached to the muzzleof the gun, a

. said barrel.

determinin the position of the cup shaped member re ative to the muzzle, and a slot in said cup shaped member, whereby to permit the gases of explosion to escapev from said chamber.

6. In a gun barrel muzzle steadier, a continuous walleddepending cup shaped member attached Ato t e muzzle of the gun, an elbow having a recess with screw threads for mounting said cup shaped member to the muzzle of the gun, a slot in said cup shaped member for permitting the gases of vexplosion .to escape, and a movable head adapted to -be wholly withdrawn from said cup shaped member, whereby to give access tothe interior thereof for cleaning purposes.

7. In a gun barrel muzzle steadier, a depending cup .shaped member adapted to -ous walled depending vchamber in communication with the bore of said barrel, said means adapted to receive, deiiect and discharge at right angles upwardly into the atmosphere a portion of the forces exerted initially within the gun barrel against the projectile. j

9. In a gun steadying device a continuous walled depending chamber, a vent above said chamber, a projectile outlet and means for attaching said device to the gun barrel so as to place the bore thereof in communication with the chamber.

.10. In a device for steadying the muzzle of a gun barrel at the moment of firing an explosive projectile, a continuous walled depending chamber adapted to be 4in com- 110 munication with the bore of said barrel and to receive, deflect and discharge at right angles upwardly a portion of the explosive gases traveling outwardly through said barrel, and means for attaching said device to 11. In a device for steadying a gun when fired, avcontinuous Walled dependingv chamber, a vent. opposite said chamber, an outlet for a projectile and means `for attaching 12 the device to the gun.

12. In a gun barrel muzzle steadier a continuous walled depending gas chamber adapted to receive a portion of the explosive gases and deflect'same upwardly through a 1 2! vent opposite said chamber whereby the tendency of the muzzleto jump upwardly is. counteracted.

13. The combination of a. gun barrel adapted to fire explosive projectiles and a 181 device for steadying the muzzle thereof,

` said device including acontinuous walled depending chamber in communication with the bore of said barrel, said means being adapted to receive, deflect and discharge upwardly at right angles to said bore a portion of the explosive gases, whereby the tendenc for said muzzle to jump upward is nulli ed and counteracted.'

14. In a. device for steadying and counteractingthe upward jump of the muzzle of a gun at the moment of firing, a continuous walled depending chamber communicating with the bore of the gun barrel and adapted to receive therefrom a portion of the eX- plosive gases, a vent above said chamber, an outlet for a projectile, and means for attaching said device to said gun barrel.

15. The combination of a gun barrel adapted to fire explosive projectiles and a device adapted to steady the muzzle of 'said barrel at the moment of firing, said device being adapted to be attached to said barrel and including continuous walled depending means whereby a portion of the explosive gases are received and deflected downwardly and subsequently discharged upwardly into the atmos here at right angles to their initial direction of travel in lsaid bore.

16. The combination of la gun barrel adapted to fire an explosive projectile and a device adapted to steady the muzzle of said barrel at the moment of firing, said device being adapted to be attached to said barrel, said device having a` continuous walled chamber depending from said barrel and communicating with the bore thereof, said chamber bein adapted to receive a portion of the explosive gases within said bore and deflect same downwardly, said means being further adapted to subsequently discharge said gases upwardly into the atmosphere at right angles to their initial direction of travel when within said bore.

17. A device adapted to be attached to the barrel of an explosive projectile gun, said device having openings registering with the bore of said barrel, said device having a continous walled depending chamber communieating with said bore through said openings, said chamber adapted to receive a portion of the explosive gases in their outward travel through said bore and to deflect said gases downwardly to be subsequently discharged through a vent in said chamber, said vent being above the axis of said bore and above said chamber.

18. In an explosive firearm having a barrel, a muzzle steadierdevice adapted to be attached to the end of said barrel, said de vice including a continuous walled depending chamber and in communication with 'the bore of said barrel, an opening in said chamber in register with the bore of said barrel, and an opening in the top wall of said depending chamber.

19. In an explosive firearm having a barrel, a muzzle steadier device adapted to be. attached to the end of said barrel, said device including a continuous walled depending chamber and in commpnication with the bore of said. barrel, an opening in said chamber inregister with the bore vof said barrel, an opening in the top wall of said depending chamber, and means for'locking said device in a fixed position on said barrel.

In testimony whereof I have afhxed my signature.

MILLARD L. JOHNSTON.

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