Патент USA US2405308код для вставки
Aug» 6,1946. J. F. JACK ‘ 2,405,308 DRY FIRING CARTRIDGE Filed March 13, 1944 O JICK INVENTOR‘. I 4 ATTORNEY. Patented Aug. 6, 1946 ‘ 2,405,308 UNITED STATES T'ET QE'FEQE 2,405,308 nay FIRING CARTRIDGE Joe’ F. Jack, ArcadiayCalif. 7 Application March 13, 1944, Serial N0.'526,159 8 Claims. (c1. s5_25) 1 2 The present invention relates generally to ?re equivalent to that provided by the explosion of arms and'more particularly to cartridges for use the primer of a live cartridge of the same caliber. in'practicing with ?rearms to improve the aim An additional object is to provide a cartridge ing and shooting of ‘them by persons such as suitable for practicing dry ?ring that is satis policemen, sportsmen, and members of the armed 5 factorily durable in service and economical to forces. As is well known, it usually requires much manufacture. practice‘ in, aiming a ri?e or pistol and also in A further object of my invention is to provide actually pulling the-trigger of the same while the a cartridge of a?xed caliber for practicing dry sights. are held on the target to make one expert ?ring which can-be used satisfactorily in two or inthe use of ?rearms. To use actual or live car 10 more ?rearms that ‘?re diiferent caliber bullets. tridgesin practicing with such a firearm dis Other objects and advantageous features of my turbs- the‘ sight alignment and prevents the invention will appear as the description proceeds. shooter *from determining the cause of failure to In the drawing: hit his object.- When ?red dry the shooter knows Figure 1 .is'a side view, broken away in part, ‘by the movement of the sighting plane whether 15 of a revolver shown with a dry ?ring cartridge or not‘he pulled off, high, or iow or to either side. that embodies my invention in ?ring position in As it is well known, it is always helpful inbe the revolver. coming'pro?cient in the use of ?rearms to cook Figure 2 is an enlarged longitudinal sectional the ?rearm, aim it at a target with no cartridge view of the cartridge shown in Figure 1. in the barrel or with the shell of a discharged 20 or exploded cartridge in the barrel, and pull the trigger while the ?rearm is sighted at the target. Figure 3 is an enlarged longitudinal sectional view of a so-called rimless cartridge with a simu lated bullet element shown in position in the car There are some objections to thisway of prac tridge (side view). ticing or simulating the ?ring of pistols, etc., Figure 4 is an enlarged longitudinal section commonly called “dry ?ring.” For one thing, the 25 through a simulated ri?e cartridge constructed lack of the weight of live cartridges in the ?re according to my invention for practicing dry arm “makes the user get somewhat accustomed ?ring. to the feel, i. e. the lighter weight, of the ?rearm with the blank cartridges or empty shells‘ in it and‘ when several heavier live cartridges are in the ?rearm it tends to make the quick and accu rate shooting of the ?rearm less certain due to Figure 5 is a partial longitudinal sectional view through a simulated rifle cartridge constructed according to my invention, a bullet element being shown in side view. Figure 6 is a fragmentary longitudinal section through an automatic pistol which illustrates an other form of?ring pin with which my dry ?ring cartridge may beladvantageously used. For purposes of illustration, in Figure 1, one of my dry ?ring cartridges I0 is shown in a cham ber :ll of a usual cylinderlZ of a revolver l3. In a handle it, a main spring I 5 may be mounted to swing a hammer l6 when a trigger H is pulled. All of "these parts may be of usual construction recoil. This may be a serious matter if it is a case of a policeman’s pistol while he is dealing with desperate criminals, or in warfare. There are also other objections to the use of empty shells‘ or noshells at all in the ?rearm. The ac , I curately made ?ring‘pin is-damaged' and often broken by being driven farther through the re coil plate than is usual, causing the shoulders of ' the ?ring pinor hammer to be damaged by strik ing some unyielding metal parts of a revolver such as a recoil'shoulder. It is an important object of my invention to as is found in a well ‘known make of revolver It will be understood as the description proceeds provide a cartridge device with which dry ?ring ' that my invention can be carried out with other makes of revolvers. can be practiced without causing any damage to the ?rearm. Another object of my ‘invention is the provision of a cartridge for practicing dry ?ring which has On the hammer 16, may be mounted a ?ring pin member 20 integral with the hammer or'made separately and fastened to the hammer in a well known way for replacement purposes. the. same weight as a live cartridge of the same 50 caliber which is made up with the usual shell, powder charge, and lead or steel bullet. Still another object is the provision of a car tridge for practicing dry ?ring which provides a yielding resistance to the ?ring pin approximately The pin 25 may have a shoulder element 2 l , and in ?ring a live cartridge in the revolver the pin is projected forcibly through‘ a ?ring pin hole 22 ina recoil plate 23 ‘which usually forms an inte gral part of a frame member 25 in which the cyl~ inder H is rotatably'mounted. Thepin 25 usually 2,405,308 3 ?lls the hole 2| rather closely when the revolver is ?red with a live cartridge. When the revolver is snapped, i. e., the hammer is operated, and there is no cartridge in the chamber in ?ring position the pin 20 may be driven in so far that the hole 22 is spread slightly or the shoulder 2| may strike the metal rim around the hole. These 4 3 to 25 pounds. Therefore the spring 31 used in one of my dry ?ring cartridges should be designed for use with a ?rearm after determining accu rately the strength of its main spring. My dry ?ring cartridges can be inserted in the cylinder of a revolver one at a time by hand as is done with live cartridges. I objectionable results are cumulative and after re peated use of a revolver or ri?e in this way the For loading my dry ?ring cartridges conven iently into an automatic'p-istol and into some in a ?rearm since the ?ring pin will soon punch a hole deep into or entirely through an exploded " cap element in the cartridge shell. Also there is ' To meet this condition, I’ provide a dry ?ring consequences may be serious and require some 10 automatic ri?es it is necessaryto ?rst load them into a usual clip (not shown) which is an essen expensive repairs. Or they may cause a ?rearm tial element of those kinds of ?rearms. For any to fail to function properly at a time when such cartridge to be handled by such clips satisfac a failure is a very serious matter, The above torily it must have substantially the same com noted undesirable consequences will often result from the repeated use of exploded cartridge shells 15 plete form outwardly as that of a live cartridge. cartridge 40 illustrated in Figure 3. In this form of my invention, ‘the parts 4|, 45, 45 and 41 of the Figure 3 structure have the same functions no recoil force from the already exploded cap . which helps to cushion the impact shock on the 20 as the parts 3|, 35, 36 and 31, respectively, of the Figure 2 structure, and a further explana small ?ring pin and the hammer caused by the tion of these parts of the Figure 3 structure is pin striking the cap. ' deemed unnecessary for an understanding of my A cartridge generally designated as H! and con invention. So that the cartridge 40 may be han structed according to my invention will permit dled by a usual spring clip (not shown) or used . “dry ?ring” to be practiced without causing the in a ?rearm such as is shown in Figure 6, a simu objectionable consequences to a ?rearm explained lated :bullet 40b has a reduced neck portion 48 above. Its total weight may be substantially the which will ?t tightly in the open ven'd of the same as ‘the weight of a corresponding live car shell part 4| and. may be fastened securely in tridge. This cartridge includes a shell 3| the outside dimensions of which are preferably sub 30 such position by means as described above for the plug 38. It will be understood by those fa stantially the same as those of a shell of a live miliar with the use of automatic pistols that the cartridge of the same caliber and length. The cartridge illustrated in Figure‘ 3 is these-called shell 3! ‘has a rim 32 and a forward end portion rimless kind, and they will understand the rea of solid metal, except for a small round hole 34 instead of being hollow as in a live cartridge.v 35 son for the different construction of the shell The solid portion 33 helps to give ‘the dry ?ring 4| at Ithe end adjacent the plunger 45 from ‘the cartridge the same weight as that of a live car rim tridge of the same size having a usual lead bullet. The extra thickness of the solid portion provides 3 . ' ' ' In Figure 4 is illustrated how my invention may be'embodied in a so-called rimless rifle cartridge another-advantage in that a satisfactorily long 40 5|), which includes parts 5|, 53, 55, 56, 51 and 58 that correspond to and function like the parts bearing or guiding means is provided for the body 3|, 33V, 35, 36, 31, and 38, respectively, of the of a rod ‘or plunger 35 slidably mounted with a snug ?t in the hole 34 which is concentric with ' Figure 2 cartridge. ’ It will be readily understood by those familiar ably made of soft metal such as copper, brass or 45 with modern ri?e construction thatrthe shell 5| may be of the same size and shape outwardly as aluminum, and its outer end terminates a very that of several shells of several different live short distance back or inwardly from the face of cartridges each of which has a bullet of different the rim portion 32 of the shell, approximately caliber and weight but all have the same size positioned as is the face in a primer of a live cartridge of the same diameter or the end may 50 of shell. Such different live cartridges will have to be ,?red in different ri?es each ofwhich has be flush with the face of the shell and slightly a bore beyond the usual shell receiving chamber rounded. On the rear end of the rod is provided to ?t the diameter of the bullet to be ?red from an integral ?ange-like piston member 35 which it. One size of the shell 5| will ?t in any of has a loose Working ?t in the hollow space of the shell 3|. To provide a yielding resistance of 55 several shell receiving chambers. The spring 51 , is preferably made at least ten pounds stronger an amount to appear hereinafter a coil spring 31 than the strongest main spring of the rifle the is positioned in the shell 3| and a tight-?tting cartridge 50 is to be used in. ' plug 38 is pressed into the open end of the shell In Figure 5 is illustrateda dry ?ring Cartridge 3| and fastened securely in place by friction or threading, or other suitable well known devices. 60 60 embodying my invention and constructed to be loaded into a clip (not shown) preparatory to The size of the wire in the spring 31, its diameter being brought to a ?ring relation with the ?ring and length are designed to provide a pressure on pin of a rifle (not shown). The cartridge 60 the piston member 36 which considerably exceeds includes parts SI, 63, 65, B6, and 61 which are the pressure on the end of the plunger 35 caused by the ?ring pin 2!! striking the latter under action 65 similar in construction and function to the parts 5|, 53, 55, 56, and 51, respectively. The dry ?r of the hammer l6 and main spring I5. I have ing cartridge 6|] is shown with a simulated bullet found after much research and testing that the element 6% of a certain caliber and length. It spring 31 should be approximately ten pounds will be understood from the foregoing descrip stronger than the main spring IE to have the plunger 35 satisfactorily absorb or cushion the 70 tion that bullet elements of different calibers from that indicated in Figure 5 can be assembled with blow of the ?ring pin which should not push the shell members 5|]. ' plunger into the shell 2| materially more than. In Figure 6 there is illustrated another form the usual travel of the ?ring pin. The main of ?ring pin which is often used in automatic springs of various kinds of commonly used ?re arms vary in strength (rating in pounds) from 75 pistols and ri?es and which is well suited for use the axis of the shell 3|. This plunger is prefer 2,405,308 5 6 with my dry ?ring cartridge. A ?ring pin ‘Ill is propelled through a hole ‘H in a plate member 12 to strike a plunger 13 of a dry ?ring cartridge 14 ing approximately the same size and weight as a live cartridge suitable for use in said ?rearm. 5. A dry ?ring cartridge for use in an auto which may be constructed substantially as is illus matic ?rearm having a chamber, a ?ring pin and trated in Figure 3. A shoulder 15 on the pin CI a cartridge clip from which live cartridges may in is provided and if the pin should be driven too be fed into said chamber, said dry ?ring cartridge far through the hole ‘II, when the cartridge 14 having the same size and shape and weight ap proximately ‘as one of said live cartridges and or a live cartridge is not in ?ring relation to the including a spring pressed, yieldingly mounted pin, the shoulder would strike the plate 12 which is objectionable in that the shock caused by the 10 member for cushioning the blow of said ?ring pin on said dry ?ring cartridge. hammer or shoulder hitting the recoil shoulder causes the ?ring pin to break. 6. A non-explosive cartridge for a ?re-arm hav Although I have herein shown and described ing a chamber, a main spring, a ?ring pin and a recoil plate provided with a, ?ring pin aperture, my invention in what I have conceived to be the most practical and preferred embodiment, it is 15 said cartridge comprising a metallic shell element recognized that departures may be madethere provided with a bore,. a plunger in said bore adapted to be engaged by said ?ring pin, an abut from within the scope of my invention, which is not to be limited to the details disclosed herein ment in said bore for a shouldered portion of said plunger, a spring in said bore to bias said plunger but is to be accorded the full scope of the claims so as to embrace any and all equivalent devices. 20 toward said ?ring pin, and a plug and nose ele ment for said bore and cartridge adapted to seat Having described my invention, what I claim said spring, said cartridge having substantially as new and desire to secure by Letters Patent is: 1. The combination with a ?rearm having a cylinder or chamber and a ?ring pin; of a car tridge-like device ?tting in said cylinder or cham ber and having a resiliently mounted member the same size, shape and weight as a live cartridge and said spring adapted to absorb the impact of 25 said ?ring pin without damage thereto during dry ?ring of the ?re arm. for receiving and cushioning blows of said pin, the weight of said cartridge-like device being ap proximately equal to that of a live cartridge of 7. For use in a ?rearm having a main spring, a ?ring pin and means for transmitting the op erative force of said spring to said pin; a dry ?r the same caliber. 30 ing cartridge of approximately the same weight 2. The combination with a ?rearm having a as a live cartridge of the same calibre, said dry cylinder or chamber, a main spring, a ?ring pin, ?ring cartridge including a shell, a yielding mem and a recoil plate device constructed with an ber softer than said pin mounted in said shell for aperture through which said pin may be moved; receiving blows of said pin while dry ?ring is of a cartridge-like device in said chamber, said 35 practiced with said ?rearm and said dry ?ring cartridge device including a metallic shell ele cartridge, and a spring in said shell pressing ment, a plunger member positioned in said shell against said yielding member with a force ma to be struck by said ?ring pin and a spring in terially greater than the force of said main spring said shell pressing against said plunger to cause and in an opposite direction to that of the move it to resist being moved by action of said ?ring 40 ment of said ?ring pin. pin. 8. The structure described in claim 7 char 3. The structure described in claim 2 character ized by said spring in said shell being stronger than said mainspring. 4. The combination of a ?rearm and a dry ?r ing cartridge in said ?rearm, said cartridge hav acterized by said spring in said shell being ap proximately ten pounds stronger than said main spring. 45 JOE F. JACK.