. 9, 1954 G. R. BATTEN 2,668,479 COMPENSATOR FOR SHOTGUNS Filed Aug. 22, 1950

Gjira D R INVENTOR. fujit.B ATTrORNTYS Patented Feb. 9, 1954 2,668,479

UNITED STATES PATENT of FICE

Gerald R. Batten, Chicago, Ill. Application August 22, 1950, Serial No. 180,846. . . Claim. 2. This invention relates to compensators for shot view of the compensator arranged on a shot gun gllS. barrel. An important object of the present invention The particular construction: herein shown for is the provision of new and novel means to cut the purpose of illustrating the invention com down muzzle blast, to cut down a certain amount 5 prises a tubular modulator or outer housing , of shot deformation, to provide for a better shot which is adapted to be secured to the muzzle end pattern and still reduce recoil to a minimum, 2 of a shotgun barrel 3. ...The particular shot and to prevent a jump of the shot as it leaves the gun barrel herein shown is provided with an muzzle, the end of the tube being positioned close elongated solid rib. 4 along its upper surface, al to the muzzle end of the gun barrel. 0 though the present compensator may be applied Another important object of the invention is to barrels. having other forms of ribs, such as a the provision of a shot gun compensator com ventilated rib.: prising a modulator in the form of a cage-like The nodulator or tubular Outer housing has outer casing or housing and an inner cylinder a relatively-thickened inward part 5 which is in or tube; the modulator being provided With a 5 teriorly screw-threaded: at 6 to cooperate with pair of spaced opposed openings or louvers at its Screw threads formed on a bushing or sleeye outer end, the inner body or tube being provided 8 which is mounted exteriorly of the barrel 3 at with opposed louvers arranged a predetermined its muzzle end is, Figs. 2 and 3. The modulator distance from the inner end of the tube, and ad body f is adapted to be provided with a pair of jacent the said inner end for the purpose of short 20 diametrically opposed-circumferentially spaced ening the shot string, as well as to reduce muzzle slots, openings or louvers 9 arranged at, or near, blast and recoil; the slots in the modulator or the extreme outer forward, end of the body to housing and the slots or louvres in the tube pro permit gases in the compensator to escape during viding an escapement of gases and to relieve the the discharge of the gun. The extreme forward compression of air in the barrel during the move 25 outer end of the modulator body i is provided ment of the shot through the barrel and com with internal screw threads. Owith which the pensator. forward end of theinwardly positioned tube 2 Another important object resides in the pro has threaded engagement, Figs. 2 and 3. vision of a slotted tube arranged within, and en The tube. 2 is arranged concentrically inside compassed by an Outer housing: or modulator 30 of the modulator housing , and is spaced a cer member, the inner end of the tube being ar tain distance from the surrounding. Wall of the ranged in close proximity to the muzzle end of modulator to provide a circular chamber about the barrel to prevent a jump of the shot as it the outside of the tube. The tube 2 may be leaves the barrel and enters into the tube. made in various diameters depending upon the A : further 'object is the provision of a modu size and effect desired. A single barrel shotgun lator and tube, each constructed and arranged thus may be provided with various chokes, such in a particular manner and positioned in a cer as cylinder, improved cylinder, modified, im tain way to effect proper shot formation, reduc proved modified, full, and even; super choke by tion in recoil and muzzle blast and to prevent the application of the proper tube. stray shot pellets from being blown out of the 40 Heretofore, ...certain shot gun compensators tube during the passage of the shot through the have been provided with an outer casing or hous tube. . . ing having "a plurality of spaced contiguous op Numerous other objects and advantages will positely disposed openings extending practically be apparent throughout the progress of the ap throughout its entirelength, and the conventional plication which follows. 45 tube heretofore used had a solid enclosing or en The accompanying diraWing illustrates a se circling. Wall. Certain of these prior tubes ex lected embodiment of the invention, and the tended inwardly of the outer casing, while other views therein areas follows: types protruded ...outwardly beyond the end of Fig. 1 is a detail elevational view of a shotgun: the body...or casing. ... Certain of the conventional barrel having the improved compensator applied 50 compensators had the disadvantage in that the to the muzzle end thereof; report of the shot, that is, the muzzle blast, was Fig. 2 is an exploded view showing in perspec very loud and annoying, particularly in cases tive the various elements forming the improved where hunters are: close together, such as in a compensator of the invention; and . 5 duck:blind, or when the hunter... shoots over a Fig. 3 is a detail longitudinal vertical sectional dog. These prior compensators also had the dis 2,668,478 3 4 advantage of being unsafe because some of the recoil, modulate the shot and shot string and shot pellets would be discharged out of the side reduce noise, that is the shot gun blast. of the casing through the elongated rows of It is well known that conventional shot gun Spaced openings. These former devices also did compensators cause more noise than would occur not have the proper shot pattern which is de should no compensator be used. However, sired by every hunter or shooter. The present actual tests have proven that the compensator invention. Overcomes many of the disadvantages of the invention causes no greater blast than a inherent in the conventional type of compen gun without a Compensator. Sators, but still retains the advantages they may The slots 9 in the housing and the slots 8 have. 0 in the tube therefore reduce blast and recoil to a The tubular opening of the compensator tube minimum. The location of the slots 9 and po 2 of the present invention is relatively large at sitioning of the same at the forward end of the its inner or receiving end 3, Fig. 3, being some housing, and the location and positioning of the what larger in size at that end than the diameter slots 8 in the tube causes pressure in the gun 4 of the bore of the gun barrel at the muzzle barrel to be relieved and dissipated without any end. The extreme inner edge 5 of the tube 2 back pressure. at the shot receiving opening 3 is flared and The positioning of the inner end of the tube, sloped in relatively bell-shaped formation so close to, and contiguous to the end of the gun that the shot string, when it leaves the muzzle, barrel and the particular construction and ar will be received within the tube, and thereby 20 rangement of the parts, as well as the forma Overcome any danger of any of the shot striking tion thereof, recaptures stray shots or pellets, the end of the tube or ricochetting within the and compacts the shot into a proper charge. body of the tube. The extreme inner end of the The openings or slots in the modulator and tube tube 2 is positioned in very close proximity to provide an expansion chamber and give for the end of the gun barrel muzzle So as to receive 25 greater forward thrust of the shot, as well as all the shot immediately after it leaves muzzle, cutting down recoil. The result of the present and thereby prevent any deformations of the compensator, therefore, reduces recoil, reduces shot. The gas between the inner end of the tube muzzle blast, prevents deformation, increases the and the Outer end of the barrel is very slight, over-all efficiency of the gun, and makes shoot if any, it being preferable that there be no gap 30 ing safer. at all. The danger of the shell wad or wild shot A gun sight 9 may be mounted on the exterior catching on or going out of the side of the modu of the modultor at its for Ward end and a pre lator is eliminated and proper gathering of the determined distance inwardly of the knurled shot is assured. ring 7 on the tube and in line with the sighting The forward end of the tube 2 is relatively 35 plane of the rib 4. straight, and has an inside diameter of a size The modulator or tubular housing or body equal to the intended or desired choke. The may be secured to the end of a gun barrel by forward end of the tube, outwardly from the screwing it to the sleeve 8 which is secured to the center thereof, is also relatively straight, the gun barrel by Soldering or the like. A set Screw choke usually being formed in the tube between 40 20 may be provided for holding the modulator in its inner end and a point substantially midway proper position and alinement with respect to thereof. the gun barrel so that the sight f8 will be in The tube 2 preferably has an integral knurled proper position with respect to the sighting plane ring formed on its outer side, being located a of the gun barrel. However, the manner of predetermined distance inwardly of the extreme 45 applying the compensator to a gun barrel may be outer end thereof. This knurled ring fl is for by any conventional well known means. the purpose of permitting the tube 2 to be ap The application of the slotted tube extending plied easily and removed easily from the casing interiorly of the compensator housing and con so that tubes of different choke may be centrically spaced therefrom, and the arranging changed readily. The outer end of the tube 2, 50 the end of the tube near or at the end of the just inwardly of the knurled ring 7, is somewhat barrel provides many advantages over conven thickened, and has the exterior screw threads tional devices. , which threadedly engage the interior threads The positioning of the slotted tube inwardly on the inside wall of the modulator near of the modulator with the end of the tube close its outer end. A tube of the desired choke, 55 to the barrel muzzle eliminates a slot jump, pro therefore, may be applied readily and quickly. vides for proper recoil by reducing same, and Each tube regardless of choke is substantially overcomes the violent loud noise or muzzle blast. of the same length and weight, thereby provid Tests have proven use of the opposed circum ing the same gun balance regardless of the choke. ferential slots at the outer end of the modulator, The tube 2 is provided with pairs of discon 60 and the spaced rows of circumferential slots in nected rows of oppositely disposed spaced slots the tube, disclosed in the present invention, 8 extending partially about the tube and com provide for better distribution of the shot, pro pletely through the tube wall. The slots or vide for a much better shot pattern, and provideº openings 8 of each pair of rows are in the same for greater safety. vertical plane and are separated at their ends 65 The compensator, including the modulator by an intact portion which is an integral part and its cooperating tube 2, may be made of alu of the tube body. The pair of rows of slots 8 minum, aluminum alloy, steel or any other kind (there being two rows of six spaced slots shown) of metal or inaterial capable of performing the start a short distance from the inner end of function intended. It is ea Silly applied to, or the tube 2 and extend forwardly, being arranged 70 removed from, the gun barrel and costs no more in spaced apart relationship. The first pair of than the conventional types of compensator. opposed slots (8, that is the pair closest to the Changes may be made in the form, construc inner end of the tube at the muzzle, start a tion and arrangement of the parts without de predetermined distance forwardly of the inner 75 parting from the spirit of the invention or sacri end of the tube. The slots 8 tend to lessen ficing any of its advantages, and the right is 2,668,479 5 6 hereby reserved to make all such changes as fall tubular member, and the extreme inner end of fairly within the scope of the following claim. Said inner tubular member positioned to termi The invention is hereby claimed as follows: nate closely adjacent the end of the muzzle when A compensating device for attachment to the said outer tubular member is mounted on said muzzle of a shotgun comprising an outer tubular 5 muzzle, said flange abutting the outer end of the member having a constant outer diameter Said outer tubular member, said annular space throughout its length and a constant inner diam between the inner and outer tubular members eter except for a distance at each end thereof, a being unrestricted between Said flange and the pair of oppositely disposed circumferentially inner end of Said inner member. Spaced slots in Said tubular member adjacent the 10 end thereof which is to be positioned away from GERALD R. BATEN. the muzzle, and a single inner tubular member within the outer tubular member and having threaded engagement thereWith and providing an References Cited in the file of this patent annular space therebetween, the inner diameter 15 UNITED STATES PATENTS of the inner tubular member being greater than Number Name Date the diameter of the bore of the gun barrel at the 2,112,831 CuttS ---- ? ------Apr. 5, 1938 muzzle, an annular flange around the Outside of 2,447,205 Powell ------Aug. 17, 1948 said inner tubular member adjacent the outer end 2,499,428 Tiffany ------Mar. 7, 1950 thereof, said inner tubular member having its 20 2,503,491 Janz ------Apr. 11, 1950 inner end flared adjacent the barrel muzzle, a plurality of axially spaced and circumferentially FOREIGN PATENTS extending slots through said inner tubular mem Number Country Date ber greater in number than the slots in the Outer 562,475 Germany ------Oct. 26, 1932