US2471276A

US2471276A - Magazine gun with integral breech bolt and hand grip

Info

Publication number: US2471276A
Application number: US686523A
Authority: US
Inventors: Charles J Manville
Original assignee: Lake Erie Chemical Co
Current assignee: Lake Erie Chemical Co
Priority date: 1946-07-26
Filing date: 1946-07-26
Publication date: 1949-05-24
Anticipated expiration: 1966-05-24

Description

C. J. MANVILLE BOLT AND HAND GRIP Filed July 26, 1946 MAGAZINE GUN WITH INTEGRAL BREECH May 24, 1949.

Patented May 24, 1949 MAGAZINE GUN WITH INTEGRAL BREECH BOLT AND HAND GRIP Charles J. Manville, Pontiac, Mich, assignor to Lake Erie Chemical Company, Cleveland, Ohio, a corporation of Ohio Application July 26, 1946, Serial No. 686,523

9 Claims. 1

This invention relates to a magazine type gun adapted to fire gas shells, rocket type shells, flares and similar missiles.

The chief object of this invention is to provide a gun of pistol grip stock type which can be held with one hand and fired with the other hand.

The chief feature of the invention resides in providing a breech bolt action mechanism whereby the hand used for firing can always be in contact with the trigger, the entire mechanism including the handle and trigger being bodily movable for cooking as well as shell injection purposes, the action being characterized by partial rotation of the breech bolt mechanism and trigger and handle assembly and the retraction thereof suflicient for shell entry, and then return movement for shell injection into the gun barrel and for conditioning the gun for firing.

Another feature of the invention resides in arranging the same so that the aforesaid action, except for the firing, can be effected whether the gun is locked in the safety position or not.

Another feature of the invention resides in the utilization of a headless type shell so that the cartridge is muzzle ejected when the gun is fired.

A further feature of the invention resides in the yielding association of the forepart of a bolt mechanism with a shell to permit the injection of'the shell without the accidental firing of the same.

Still a further feature of the invention resides in the arrangement of the parts whereby the entire breech bolt action mechanism together until the shell is fired, the said means yielding I upon firing to permit shell ejection through the muzzle.

Other objects and features of the invention will be set forth more fully hereinafter.

The full nature of the invention will be understood from the accompanying drawings and the following description and claims.

In the drawings Fig. 1 is a side elevation of a gun of the character described showing the same provided with a forward hand grip support, a

2 rearward combination pistol grip and trigger structure and with the stock addition for shoulder firing.

Fig. 2 is a longitudinal sectional view of the gun shown in Fig. 1 with the shoulder stock and the forward hand grip omitted.

Fig. 3 is an enlarged, detached plan view of a portion of the barrel for the gun, the barrel being turned end for end and angularly displaced with respect to the illustration in Fig. 1 to more clearly show the channel or guide structure provided in the barrel to permit the rotary and reciproca: tory movement of the breech bolt mechanism and the trigger assembly, as well as the removal of the same from the gun barrel.

Fig. 4 is an enlarged transverse sectional view taken on line 4-4 of Fig. 2 and in the direction of the arrows.

In the drawings, and more particularly Figs. 1 and 2, l0 indicates an inner barrel, the latter having an elongated aperture ll therein. A shorter outer barrel 12 has a similar aperture is, the two apertures registering with the mouth of a magazine M having the barrel embracing portion 15. I

This magazine is of spaced confronting channel type and is adapted to receive a clip structure it within which is mounted a spring ll bearing on a platform it, the spring being compressed when the clip is loaded with shells S.

When the breech bolt assembly is retracted it will be quite apparent that the spring l1 forces one of the shells upwardly through the register ing apertures I l and is into the inner gun barrel, and when the breech bolt assembly is moved forwardly the shell thus disposed within with the barrel is caused to move forwardly in the same, thereby effecting a breech loading action.

Forwardly on the outer barrel is a ferrule arrangement is that supports a, forward hand or pistol grip 2t, whereby the gun may be heldor supported.

Carried by the forward portion of the inner barrel is an upwardly directed support and abut ment 2! and a pin 22 therethrough suitably anchors a channel 23 to the gun barrel.

The rearward end of this channel is tapered downwardly and rearwardly toward the barrel forming a cam surface 24, and the rearward end 25 comprises a tongue seating in a seat formed by the notch 25 formed in the upper forward end of the outer barrel l2 and the ferrule portion 59. This constitutes the anchorage for the other end of the channel member.

Within the channel member and bearing'on the abutment 2| is a spring 2? bearing at its opposite end on the headed portion 28 of a pin or stem 29. The latter bears against one end of a cam member 30 having a portion that registers in and projects through the elongated slot 32 in the inner gun barrel.

The aforesaid portion 3| constitutes the stop or abutment'of yielding character for retaining in the barrel the breech injected shell until such time as the shell is fired, whereupon the cam member 30 is pushed forwardly and in so doing the portion 3| is retracted from projecting in the gun barrel, thereby permitting the discharge of the shell together with the contents thereof.

The means for retaining the clip, in the magazine may be of conventional character, such as registering

apertures

33 and 34 in the clip and magazine, respectively, in which the hooked end 31 of a latch member 36 engages. This latch member 36 is pivotally supported at 35 upon the magazine I 4 and the portion 31 is yieldingly urged into the'apertures 33 and 34 by a spring 39 which'bears on the upper extending portion of the latch member. The portion 3'? of the latch"mernber.has'a cam" end 38 so that the clip H5) in entering the magazine, rocks the latch member againstth'e'action of the spring 39, the latter thereafter forcing the hooked end 31 into the'aperture 33 of the clip when it has been alignedwith the aperture 34.

Adjacentthe portion 40 of the latch member is a-stop'fil that'limits the rocking movement of the latch; When the shells from the magazine have been exhausted the clip is unlocked by fih'ger'pressure on the portion 40 in opposition rearwardly'of the magazine and the inner barrel I 0"is continued'to the end of the gun.

Slidably and rotatably mounted upon the rearwardp'ortion of the barrel I6) is a tube 43 havingitsrear end closed "as at 44. This tube comprises-a portion 'ofthe breech bolt assembly, to which reference will be had more fully hereinafter. This breech bolt assembly includes a pair'of spaced depending

arms

45 and 46, the laiter being extended rearwardly as at 45a, see Ff C 2'.

The arms '45 and 46 are provided with a body structure 48 thereby forming a hand grip and thelatter, as well as the forward arm 45, is suitable apertured as at 47. Pivotally supported at 4911 in the hand gripis a trigger member 49, the latter being normally projected outwardly and'forwardly through the slot 4'! by means of spring 50.' This trigger has a contact portion 51 formed on its upper rear end.

The tube 43 has an aperture 52.therein that is always'in registration with the contact portion 5| on the end'of the trigger. The barrel [0 has an elongated slot 54, the forward end of which registers with the aperture 52 when the gunis cocked and ready for firing, such position being'shownin Fig. 2.

The breech bolt mechanism proper comprises a tube55 having a rearward end 56 apertured at 51"to' slidably support the firing pin or rod 58. Thisfirlng pin has mounted thereon a comparatlve'lystrong coil spring 53 that bears at one end upon-the end 56iof the tube 55 and the opposite end"bears upon a sliding guide 60 secured as'at 6'1 to'the firingpin.

Theforward end of tube 55 of the breech bolt mechanism is closed by a sleeve 62 that is provided with a channel 53 therein in which the firing pin rod 58 is guided, the forward end of this rod terminating in the firing pin point 64. This sleeve 62 has an enlarged forward outer portion or head 65.

The tube 55 isprovided withan elongated slot 66 and'a set screw fil 'secured to sleeve 62 projects into said slot and slidably connects the sleeve and head 6265 to the tube 55, the sleeve and head constituting a forward closure for the breech bolt'mechanism as well as a guide for the firing pin.

Interposed-between the sliding guide Gil and the forward'closu-re is a light spring 58, and this normally constrains the sleeve 62 and its head 65 forwardly.

When the breech bolt assembly is retracted for shell injection this head 65 is withdrawn rear- Wardly suflicient to permit the shell to enter the barrel H] from the magazine as previously described. Upon'returnof the breech bolt assemb'ly'to the-firin'g'position theinitial contact-be tween the magazine ejected -shell and the breech bolt mechanism is effected at the head 65 and the shell is moved forwardlyun'til it engages the stop'3l'.

When the shell engages the stop 3! the'head 65 moves rearwardly in oppositionto the spring 68 until the head engages th'e'forward end of the tube 55 of the breech bolt mechanism.

If the trigger has been released this contact thenresu'lts in the point'fiof the firing pin engaging the shell, and if the impact isinsufilcient to fire the shell no actionoccurs. If the impact is sufficient the shell is then fired.

Normally, however, the firing pin and rod will be retained in the fullline position, as shown in Fig. 2," and only'moved to the dotted'line position upon'triggerrelease'so that the firing pin does not-engage the shell wh'en'the latter engages the stop 3!.

A collar G9'is secured tO'thf1IiI1g pin rod'58 near its rear freeen'd'by the set screw it).- This collar mounts a radially projected pin l'l slidable in the radial bore 5'2 and normally. projected outwardby aspring 13. This pin rides in the previously mentioned slot 5e andservesas thesear for 'the'gun. The collar 69is provided with a means to prevent rotation-thereof.- This means'is illustrated in Fig. 4 as comprising an integral lug 69a on the collar extending into a longitudinal slotBK! -in: the barrel Hi1 Instead of this expedient the head of the set screw it may extend beyond the periphery. of the collar 69 and slide in a. longitudinal groove or: keyway on the interior of barrel Hi.-

It will be recalled that the tube 43 of the breech bolt assembly includes the aperture 52 that registers with the slot 54 when the gun is cooked and, it will be seen from Figs. 2 and 4, that the pin or searll seats in this slot and aperture in the cooked position of the gun.

Therefore, when finger pressure is applied to the trigger-49; the contact portion '5! presses the pin or-sear 'll inwardlyinto itsbore 12 against its spring 13 until it clears both the aperture 52 and the slot 54; whereupon the collar 39 and the firing pin are carried forwardly by means of the spring--59 thus projecting the firing pin point 54 into shell engagement and firing the latter.

The trigger 49 includes the notch M within the handlerstructureifl; and'in an arcuate slot 15 in saidhandle structure-there is provideda finger piece I6, same being pivoted by a member 11 in said handle structure.

The pivot member 'l'i extends transversely of the handle structure and through the notch M of the trigger. This member H has a flattened portion 18 which is disposed substantially parallel to, but spaced from, the forward face of the notch M when the member 155 is in its on position as shown in Fig. 1. This permits sufficient rearward movement of the trigger to cause the contact portion 5! thereof to disengage the pin or sear H from the aperture 52. and the slot 54 thereby releasing the firing pin so that the spring 59 drives the point 64 thereof against the shell in the barrel with sufiicient force to fire the shell. When the member iii is in its off position, illustrated in dotted lines in Fig. the arcuate portion of the pivot member l! is closely adjacent the forward face of the notch it so that the" trigger d9 cannot ire moved sufficiently to effect ejection of the locking pin or sear E! from the aperture 52 and the slot 56 for release of the firing pin rod 59.

Referring to Figs. 2, 3 and 4, and especially to Fig. 3, it will be seen that the barrel it; includes not only the slot 54 but also a slot as which extends longitudinally along the barrel parallel with the slot 54 but displaced approximately 0 therefrom. The forward end of slot ill] communicates with a transverse slot 85, a portion of the wall connecting the-slots fill and 8! being inclined as indicated at 82. The rear end of the slot to communicates with one end of a transversely extending slot 83, the other end of the latter in turn communicating with a slot M which is parallel to the slot to and extends to and through the rear edge of the barrel it.

As shown in 2, the previously mentioned arm 66 is rigidly secured to the tube while the arm 45 is integral with, or rigidly connected to, the tube 55 and extends through the slot ill in the barrel IE2. Therefore, since the

arms

55 and 46 are both connected to the handle body member 48, the tubes at and 55 are interconnected for movement together when the hand grip is manipulated.

Let it be assumed that the gun has been discharged and that it is desired to prepare the latter for firing again. The hand grip at is first moved counterclockwise, as viewed from the rear of the gun, through an angle of approximately 90 thus moving the arm lii through the slot 8! and into the slot 86. The handle M! is then moved longitudinally to rear thereby retracting the tube 55 this movement continuing until the handle Portion 45 is moved as far as possible within the slot 89. During this movement the tube 55 uncovers the aligned apertures H and iii in the barrels Ill and It so that the uppermost shel S inthe clip i5 is moved into the interior of the barrel Ill by action of the spring l'i. Also. this rearward. movement of the hand grip 45 has caused the closed end 5'15 of the tube 55 to force thecollar 69 rearwarolly carrying with it the firing pin 64, the pin or sear ll' riding within the slot 54.

The hand grip 48 is then moved forwardly to the forward portion of the slot 89. This causes theshell S, which has moved into the bore of the barrel Ill, to be moved forwardly therein until its forward edge engages the yieldable stop or abutment 31, the head 65 yielding slightly so thatthe shell is firmly engaged with the abutmer t 3lwith0uteausing the latter to move ap-- pElfibJy.,.,;As the tube 55 moves forwardly, un-

der action of the hand grip 48, the collar 69 also moves in a forward direction until the pin or sear ll engages the forward end of the aperture or slot 54, thus terminating the forward movement of the collar 69. The additional'forward movement of the hand grip, and hence of the tube 55, effects a separation between the wall 5 5 of the latter and the collar 69 thereby compressing the spring 59.

At its extreme forward position the hand grip A8 is rotated back to its initial position, the arm i-5 moving within the slot 8i thereby retaining the parts in the positions just mentioned. At this time the opening 52 in the tube 43 aligns with the pin or sear ll so that the latter may seat therein. The lower portion of the tube I2 is provided with a slot, notch or recess in which the upper forward part of the trigger 49 seats when the handle 48 has been returned to its initial position. This movement of the trigger into the notch or recess 85 thus indicates that the hand grip is in its proper position for firing and also insures that the portion 52 is spaced below the pin or sear H.

If the safety member iii is disposed in its off position, the gun cannot be fired although it is cooked and a shell is in position for firing. Movement of the safety member iii to its on position frees the trigger (it so that when the latter is squeezed, the portion til releases the pin H thus allowing the spring 59 to drive the firing pin against the rear of the shell S which is positioned in the barrel Hi. This fires the shell and the forces created thereby propel the entire shell forwardly from the barrel, the stop or abutment 3| yielding to permit this action.

Since the pin or sear ll normally rides within the slot 54, the bolt mechanism cannot be removed therefrom even though the hand grip 48 be rotated to bring the arm 45 thereof into alignment with the slot 84 when the handle is retracted. If it be desired to disassemble the bolt mechanism and the hand grip from the gun it is, however, only necessary to disengage the pin or sear H from the slot 5%. This is preferably effected by removing the trigger from the hand grip 48 thus rendering the end of the pin or sear H accessible. The sleeve 53 is then rotated approximately and retracted as described before for placing a shell within the barrel and cooking the gun. However, when the arm a5 is disposed opposite the slot 83 it is then moved therethrough by additional rotation of the hand grip at which time the pin or sear it may be depressed by a tool inserted through the opening provided by the removal of the trigger. This frees the pin or sear ill from the slot 5% so that the arm 45 may then be moved through the slot 8 5 thus withdrawing the entire bolt mechanism from the barrel. Assembly is effected by a reverse operation.

It will be noted from the foregoing that instead of the operations necessary for firing a magazine type gun of say the Springfield type, which requires removal of the hand from the trigger to eiTect manipulation of the bolt and then return of the hand from the bolt to the trigger to efi'ect firing, the present invention permits the firing hand to remain in contact with the trigger mechanism for gun cocking, shell injection and firing, thus expediting the rate of fire of the gun.

Whenever the gun is to be fired from the shoulder there is provided a wire stock Qt, see Fig," 1,

shown in the general outline of a stock, the ends being anchored to a sleeve 9i that slipsover the" 7, outer 'tube 43f0fth9'b1880h bolt mechanism and trigger assembly;

Thissleeve has a: tongue 93 struck-outwardly therefrom thus providing a notch 92 in which the rearwardportion 46a of'the arm 46 fits, the tongue 93 exten'ding over the rearward part of the portion @811. This prevents relative rotation of the stock, with respect to the bolt action mechanism and trigger assembly, so that when the gun is thus equipped the last mentioned construction, together with the additional stock, also is caused topartially rotate "and recede and then advance and 'rotate for gun loading and firing purposes. In other words, the'g-un must be removed from the shoulder, when thus equipped, for repeated firing.

While the invention has been illustrated and described in great detail in the drawings and foregoing description, the sarne is to be considered as'illustrative and not restrictive in character.

The several modifications described herein as well as others which will readily suggest them selves to persons skilled in this art, all are considered to be within the broad scope of the invention, reference being had to the appended claims.

The'invention claimed is:

1. In a gun of the type described the combination of a barrel, 2, breech bolt mechanism slidable within said barrel to effect insertion of a shell into said barrel and positioning of the shell for firing, the' said breech bolt mechanism including a firing pin for engaging and firing a shell positioned in saidbarrel, a member fixed to said firing pin adjacent the rear end of the latter and slidable within said barrel, a sear carried by said member and adapted to project into an elongated aperture in said barrel; a rear hand grip for said gun connected with said bolt for actuation thereof'wh'ich:actuation also disposes said sear within said aperture adjacent one "end thereof thereby cocking said firing pin, a trigger carried by said hand grip and adapted to be actuated only when said hand grip has been returned to its original position to effect disengagement of said sear'from said aperture thereby releasing the said firing pin for movement into firing engagement with the shell in said barrel.

2. In a magazine type gun the combination of a barrel, a shell magazine communicating with said barrel intermediate the ends thereof, a breech bolt mechanism slidable within said barrel to selectively uncover and cover the communication between said magazine and barrel for effecting delivery of a shell from the latter into the former and for positioning a delivered shell for firing, the said breech bolt mechanism including a firing pin for engaging and firing a shell positioning in said barrel, a member fixed to said firing pin adjacent the rear end of the latter and slidable Within said barrel, a scar carried by said member and adapted to p-roj ect into an elongated aperture in said barrel, a rear hand grip for said gun connected with said bolt for actuation thereof which actuation disposes said sear within said aperture adjacent one end there's" cocking said firing pin, a trigger carried by said hand grip and adapted to be actuated only when said hand grip hasbeen returned to its original position to effect disengagement of said sear from said aperture thereby releasing the said firing pin for movement into firing engagement with the shell in said barrel, whereby loading and firing of the gun may be effected without removing the hand from the hand grip.-

3. Ina gun'for firingrimless shellsthe combination of a barrel, yieldable means normally extending inwardly of the barrel for-wardlyof the breech thereof to engage a shell adjacent its forward end, a breech bolt mechanism mounted for rotation and reciprocation in said barrel; the said breech bolt mechanism including a firing pin and a sear connected to said pin and cooperating with a slot in said barrel to control cocking and release of said pin, a hand grip connected to said bolt and extending exteriorly of said barrel for effecting movement of said breech bolt mechanism thereby positioning a shell against said means and cooking said firing pin, and atrigger carried by said hand grip and cooper ating with said sear when the hand grip hasbeen returned to its original position after positioning a shell and cooking said firing pin to release the latter for firing said shell, the said means yielding under the force exerted by the fired shell thereby effecting muzzle discharge of the shell casing.

4. In a gun for firing rimless shells the combination of a barrel; a yieldable shell abutment normally extending inwardly of the barrel'forwardly of the breech thereof to engage a portion of the forward end of a shell; 9, breech bolt mechanism mounted for rotation and reciprocation in said barrel, the said breech bolt mechanism including a yieldable forward portion for firmly engaging a shell with said abutment and without displacement of the latter, a'firin'g pin, and a sear connected to said pin and cooperatingwith a slot in said barrel to control cooking and release of said pin; a hand grip connected to said bolt and extending exteriorly of said barrel for effecting movement of said breech bolt mechanism to position a shell against said abutment and to cock said firing pin; and a trigger carried by said hand grip and cooperating with said sear when the hand grip has been returned to its original position after positioning a shell and cooking said firing pin to release the latter for firing said shell, thesaid abutment yielding under the force exerted by the fired shell thereby efiecting muzzle discharge of the shellcasing;

5. The combination as described in claim 4 and in which said breech bolt mechanism comprises a tubular member having one end closed except for a central aperture and the other'end of said member having a headed sleeve with a portion slidable in said member to provide the said yieldable portion, the said firing pin being slidably supported in-the said aperture and the bore of said sleeve with one end extending exteriorly of the former and connected to said sear, the other end of saidpin being exposable' forwardly of said head to engage and fire a'shell, means rigid with said firing pin and slidable within said tubular member, a first compression spring between said means and the closed end 'of said member, and a second compression spring between said means and said sleeve.

6. In a gun of the type described the combination of a barreL'a breech bolt mechanism slidable within said barrel to effect insertion of a shell into said barrel and positioning of the shell for firing, the said breech bolt mechanism including a firing pin for engaging and firing a shell positioned in said barrel, a member fixed to said firing pin adjacent its rear end and slidable within said barrel, a sear carried by said m'ember'and adapted to project into an elongated aperture in said barrel, a tubular member slidable and rotatably supported upon the rear portion of said barrel, a rear hand grip rigidly connected to said tubular member with a portion of said hand grip extending through a slot in said barrel and connected to said bolt mechanism for actuation thereof by sequential partial rotation and reciprocation of said hand grip which actuation disposes said sear within said aperture adjacent one end thereof thereby cocking said firing pin, the said tubular member having an aperture therethrough aligned with said sear when the said hand grip has been returned to its initial position after cooking the firing pin, a trigger carried by said hand grip and having a portion adapted to extend through the aperture in said tubular member when the trigger is actuated to efiect disengagement of said sear from said longated aperture thereby releasing the said firing pin for movement into firing engagement with the shell in said barrel.

7. The combination as defined in claim 6 and further comprising a yieldable means normally extending inwardly of said barrel forwardly of said breech bolt mechanism to engage a shell adjacent its front edge, the said means yielding under the force exerted by the fired shell whereby the casing of a rimless shell is discharged from the muzzle of said barrel.

8. In a gun of the type described the combination of a barrel, a shell magazine communicating with said barrel intermediate the ends thereof, a breech bolt mechanism slidable within said barrel to selectively uncover and cover the communication between said magazine and barrel for efiecting delivery of a shell from the latter into the former and to position a delivered shell for firing, the said breech bolt mechanism including a firing pin for engaging and firing a shell positioned in said barrel, a member fixed to said firing pin adjacent the rear end of the latter and slidable within said barrel, a sear carried by said member and adapted to project into an elongated aperture in said barrel, a tubular member slidably and rotatably supported upon the rear portion of said barrel, a rear hand grip rigidly connected to said tubular member with a portion of said hand grip extending through a, slot in said barrel and connected to said bolt mechanism for actuation thereof by sequential partial rotation and reciprocation of said hand grip which actuation positions a shell within said barrel and disposes said sear within said elongated aperture adjacent one end thereof thereby cooking the said firing pin, the said tubular member having an aperture therethrough aligned with said sear when the said hand grip has been returned to its initial position, a trigger carried, by said hand grip and having a portion adapted to extend through the aperture in said tubular member when the trigger is actuated to effect disengagement of said sear from said elongated aperture thereby releasing the said firing pin for movement into firing engagement With the shell in said barrel.

9. The combination as defined in claim 8 and further comprising a yieldable means normally extending inwardly of said barrel forwardly of said breech bolt mechanism to engage a portion of the forward edge of a shell thereby locating the shell in proper position for firing, the said mean yielding under the force exerted by the firing shell whereby the casing of a rimless shell is discharged from the muzzle of said barrel.

CHARLES J. MANVILLE.

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

UNITED STATES PATENTS Number Name Date 965,386 Hansen July 26, 1910 1,316,803 Pugsley Sept. 23, 1919 1,357,208 Payne Oct. 26, 1920 1,446,763 Nelson Feb. 27, 1923 1,517,483 Young Dec. 2, 1924 1,668,432 Thorstenson May 1, 1928 1,858,601 Sedgley May 1'7, 1932 2,088,503 Broussard July 27, 1937 2,125,571 Jacobson Aug. 2, 1938 2,225,583 Blizard Dec. 17, 1940 2,391,864 Chandler Jan. 1, 1946 2,397,572 Weaver Apr. 2, 1946 2,424,194 Sampson et a1. July 15, 1947