US2851929A - Pistol firearm with spring-retained recoil bolt - Google Patents

Description

Sept. 16, 1958 J. M. 'MILROY, JR

PISTOL FIREARM WITH SPRING-RETAINED RECOIL BOLT Filed 00t- 3, 1955 2 Sheets-Sheet 1 INVENTOR John M. Mi/m Jr.

Sept; 16, 1958 J. M. MILROY, JR 2,851,929

- PISTOL FIREARM WITH SPRING-RETAINED RECOIL BOLT I Filed Oct. 3, 1955 2 Sheets-Sheet 2 R Q a w m John M. Mi/roy J1:

PISTOLFIREARM WITH PRING-RETAINED RECOIL BOLT John M. Milroy, 3n, Wilson, Va.

Application'flctober 3, 1955, Serial No. 537,952

7 Claims. (31. 89 -194) This invention relates tofirearms.

Itis an object of the present invention to provide apistol firearm which provides a longer barrel than any other hand gun of equal overall length and providing thereby greater accuracy and firepower.

It is another object of the present invention to provide firearm bearing the above objects in mind which is of simple construction, has a minimum'number of parts,

is inexpensive'to manufacture and efiicient in operation.

For other objects and a better understanding of the" invention, reference may be had to the followingdetailed description taken in connection with the accompanying drawing, in which:

Figure 1 is a side elevational view of a preferred ern bodiment of the present invention;

Fig. 2 is a rear end elevational view thereof; Fig. 3 is a longitudinal sectional view' taken along the line 3-3 of Fig. 2 andr showing the pistol in cockedposition ready to be fired. Fig. 4 is a fragmentary view similarto Fig. "3"=sh'owing the pistol after firing; and

Fig. 5 is a fragmentary top plan view taken along the line 5-5 of Fig. 1.

Referring now more in detail to the drawing, represents an elongated barrel secured to the stock- 11 by means of the collars 12, substantially as shown.

The stock 11 below the barrel 10 is provided with the cylindrical bore 13 within which is slidably positioned the recoil bolt 14, the latter at the forward end thereof being provided with a bore 15 within whichis secured one end of the coil spring 16. The forward end'of the spring'16 is secured within the forward endxof-the' bore 13 by means of the pin 17 whereby to normally retain the bolt 14 in the position of Fig. 3.

The stock 11 includes the handle 18 "having the hollow interior compartment 19 which communicates at its upper end with the bore 13 as well as with the trigger guard" 20 within which is pivotally mounted the trigger 21 by means of the pin 22.

The bolt 14 is integrally formed with thedepending portion 23 which extends into the compartment 19 and" the reduced shank 24 forming with depending portion 23 the shoulder 25.

A firing pin 26 is slidably mounted within the bore- 13 below the reduced shank 24 and terminates at its forward end in a depending portion 27 adapted to abut'the shoulder 25, the lower end of depending portion 27 being provided with the cut out 28 which receives therewithin the member 29.

The rear end of firing pin.26 isintegrally formed with" atent 2,851,929 Patented Sept. 16, 1958 the vertical portion 30 which extends upwardly above the rear end of shank 24 and terminates in the forwardly extending portion 31 adapted to contact the rear end of cartridge 32 positioned within barrel 10, the forward,

displacement of cartridge 32 being prevented by the usual flange 33 at the rear end thereof.

A link 34 is pivotally connected to the trigger 21 by, means of thepin 35 and extends into the compartment 19, the rear end of the. arm 34 being integrally formed at right angles theretowith the vertical finger 36 having a rounded upper end which rides. within the concave.

groove 37 provided on the undersurface of firing pin 26. The rearmost end of the arm 34 is formed with the.

reduced extension 38forming a shoulder 39, the extension 38 passing through an opening 40 provided near the upper end of the sear 41, thelower end ofthe sear 41 beingpivotally mounted within the opening 42 at the bottom of handle 18means of thepin 43. A leaf spring.

wardly extending bearing member 49 which slidably receives therethrough the lower end of the rod 50, the

upper end of the rod 50 being-pivotally connected to the hammer 47 rearwardly of pin 48 by means of the pin 51. A collar 52 is secured to the upper end of the rod 40 and abuts the upper end of the main spring 53, the lower end of which is secured to the bearing member 49 by means of the fastening means 54. i

Fig. 3 shows the pistol in cocked position ready to be fired. When thetrigger 21 is squeezed by the operator, the disconnector 34 is moved rearwardly, theshoulder 39 thereof engaging the sear 41 and forcing the latter rearwardly against the action of spring 44. This moves the hook 4510f the sear out of groove 46' and releases the hammer 47 which is rotated in a counterclockwise direction (Fig. 4) by the main spring 53, hitting the firing pin depending portion 27 and causing the bullet 55 to be fired from barrel 10.

The rear end of the stock 11 is integrally formed with the enlarged cartridge case 56 within which are positioned the bullets 55 and cartridges 32.

The rear end of the bolt 24 is integrally formed with the. extractor 57 having a vertical bore 58 which receives upwardly therewithin in freely spaced relationship the vertical portion 30 of firing pin 26 and a forwardly extending bore 59 which receives forwardly therethrough the forwardly extending portion 31 of the firing pin.

The resultant explosion, while forcing the bullet 55 through the barrel 10, also forces the cartridge case 32 rearwardly, which in turn forces the recoil bolt 14 andextractor 57 rearwardly. In the extreme rearward position the extractor 57 throws the empty cartridge 32 clear of the gun. The sameaction positions a new cartridge so that it will be placed in the barrel upon retiirn of the recoil bolt 14.

At the time the recoil bolt 14 was forced rearwardly by the firing of cartridge 32, the bolt 14 pushed the hammer 47 (Fig. 4) back. into cocked position. As the arm 34 was forced free of the sear 41, the latter is forced by the spring 44 to catch the hammer 47 and to hold it in .a cocked position until the operator desires to fire another cartridge. The groove 37 and the recoiled fir.- ing pin 26 momentarily forces the vertical arm 36 downwardly, causing the arm 34 to disengage from sear 41.

The recoil bolt 14 is returned to its original position by means of the recoil spring 16. Upon the return of the bolt 14, a new cartridge is positioned in the barrel 10," the pistol now being cocked and ready for repeat firing'by the squeezing of the trigger 21..

As shown in Fig. 5, in phantom, a new cartridge 32 is in position ready to be pushed into the barrel 10 upon the return of the recoil bolt to. its original position. Concurrently with the return of the bolt to the original position, the ejector 60 will slip over the edge of the new cartridge so as to eject the empty cartridge shell case when it is fired. The guide 61 (Fig. 5) prevents a new cartridge from continuing past the barrel and out with the ejected shell previously fired.

As shown in Fig. 2, the magazine 56 is filled with cartridges, and includes a magazine follower 62actuated by an integral spring, the latter consecutively pushing each new cartridge into position to replace the expended and fired cartridges. A clip-like cover 63 retains the cartridges in the magazine 56 so that they will not fall out. The magazine may, of course, be provided with a solid back instead of the cover as shown.

After reloading the magazine 56, the gun is initially cocked by pulling back on the recoil bolt handle. 63. Thereafter the operation is semi-automatic and fires upon each pull of the trigger 21 while simultaneously ejecting the fired cartridges, positioning a new bullet in the barrel and cocking the pistol in position until all cartridges have been fired It will be noted (Fig. 1) that the pistol differs slightly in appearance from conventional pistols by the bulbous magazine 56 at the extreme rear of the barrel. This cartridge magazine is only a fraction of an inch longer. than the cartridge employed. It will be noted that all necessary mechanisms are located below the barrel in the handle of the gun. Thus, for any given overall length of the pistol, the barrel will only be a bullet length shorter. This represents a radical departure from other pistols on the market wherein the barrels are seldom more than half the overall length of the pistol (either target models or pocket guns) and often much less than half. I

The invention provides ease of loading since itfihas neither empty cartridge cases not cartridge clips to remove before replacing spent ammunition. The pistol is furthermore better balanced in the cradle of the hand, as its entire weight is more properly distributed over the hand grip. The pistol will shoot short, long and long rifle bullets, all in one loading of any caliber cartridge for which it is made. Due to its longer barrel (for a given overall length), the invention is the most accurate hand gun ever designed and it is much easier to operate since it recocks itself automatically after each shot..

It has increased muzzle velocity due to its longer barrel, making it the most powerful hand gun for its size. Greater accuracy is assured due to the stationary sights which are much further apart than on any other revolver. The hand gun has a comfortable hand grip as it may be made to fit the customers hand rather than a cartridge clip or the design of the gun, as in the case with conventional pistols. Because of its relative ease of manufacture, the pistol will atfordthe public the very finest obtainable at the same time being in competition with the lowest priced. Because of its longer barrel and 'much greater accuracy (for a given overall length) it is believed that this firearmwill open a new market for hand guns as heretofore most hunters have preferred to carry a rifle rather than maintain the practice necessary to be sufliciently accurate with a pistol. It will be noted that the gun is easier to manufacture than conventional pistols as all internal machining may be done on high speed drilling machines.

As shown in Fig. 3, the reference numeral 29 indicatesa thumb operated safety which prevents the cocked pistol from firing until so desired and provides an alternate method of firing the pistol with one shot at a time,

manually. This safety 29 locks the recoil bolt in rest position so that it cannot recoil when fired, thus the full power of the burning powder may be utilized in propelling the bullet forward. This feature is instantly available by a flick of the thumb and affords the operator the opportunity for the utmost fire power and accuracy for hitting distant objects. The safety 29 is operated by the external portion 29a (Fig. 1). When the button 5 29a is pushed up, it engages the slot 28 of the firing pin so that it cannot move even when hit by hammer 47.

By pressing the thumb button 29a downwardly slightly to the middle notch, it will disengage from the firing pin 26; if the trigger is pulled, the firing pin will then fire the bullet. However, the safety 29 is still engaged with the recoil bolt and will not allow the bolt to recoil even if a bullet is fired. This is the single shot feature.

Ordinarily the button 29a is pushed downwardly as far as possible from the safety position to disengage both the firing pin and, the recoil bolt in order to allow the; I pistol to be operated as a semi-automatic.

While various changes may be made in the detail construction, itrshall be understood that such changes shall p be within the spirit and scope of the present invention as defined by the appended claims.

What I claim as new and desire to protect by Letters Patent of the United States is:

1. In a firearm, a barrel, stock means supporting said barrel, said barrel extending to the rear end of said stock means, a cartridge magazine connected to the rear end of said stock means behind the rear end of said barrel, a recoil boltslidable within said stock means below said;

barrel, spring means for retaining said recoil bolt in a forward position, firing pin means slidably mounted be-. low said recoil bolt, a depending member at the forward 5 end of said firing pin means, said stock means including a hollow handle, a hammer pivotally mounted within. said hollow handle and operable to actuate said firing pin means upon contact with said depending member,-main spring means normally urging said hammer against said firing pin means dependingmember, sear means for re-., taining said hammer away from said firing pin means de-.

pending member against the action of said main spring means, and trigger means operableto release said sear'.

means.

2. In a pistol according to claim 1, said spring means for retaining said recoil bolt in a forward position comprising a coil spring having its forward end connected. to said stock means and its rear end connected to said recoil bolt, said recoil bolt at the forwardend thereof having a bore receiving the rear end of said coilspring therewithin. i

3. In a pistol according to claim 2, said firing pin means extending rearwardly below said recoil bolt and upwardly and forwardly therethrough to contact the cartridge with-.

in said barrel, said recoil bolt having a depending portion forwardly of and adapted to contact said firing pin means depending member and a thumb operated safety adapted to lock said recoil bolt depending portion, said firing pin f means depending member having a groove receiving said safety therewithin to permit firing of the cartridge while I:

preventing displacement of said recoil bolt- 4. In a pistol according to claim 2, said sear means comprising an arm rotatably mounted in the lower end of said handle and having a hook at its upper end adapted to engage a correspondingly shaped groove provided in the rear end of said hammer when the latter is in the inoperative position, and leaf spring means mounted in the lower end of said handle urging said arm into engagement with said hammer.

5. In a pistol according to claim 4, said trigger means comprising a trigger pivotally mounted within 'said stock means, a rearwardly extending arm pivotally connected tosaid trigger and formed at its rear end with a reduced extension providing a shoulder, said sear arm having an opening receiving said extension therethrough in abutment with said shoulder.

6. In a pistol according to claim 5, said main spring means comprising a bearing member extending inwardly of said hollow handle and receiving downwardly therethrough a rod, the upper end of said rod being pivotally connected to said hammer rearwardly of the pivotal mounting thereof, a collar on the upper end of said rod,

and a main spring sleeving said rod below said collar, the 10 6 lower end of said main spring being connected to said bearing member.

7. In a pistol according to claim 6, said rearwardly extending arm having a vertical finger extending upwardly therefrom, said finger having a rounded upper end cooperating with a concave groove provided on the undersurface of said firing pin whereby to depress said shoulder upon rearward motion of said firing pin.

No references cited.

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