US1571975A - Firearm - Google Patents

Description

Feb. 9 1926.

C. G. SWEBILIUS FIREARM Original Filed May 29, 1920 2 Sheets-Sheet 1 Feb. 9,1926. 1,571,975

C. G. SWEBILIUS FIREARM Original Filed May 29. 1920 2 Sheets-Sheet 2 an Mim- CARL eusrar swaerzius, o

ASSIGNMENTS, To one rarest series.

NEW HAVEN, CONNECTICUT, ASSIGNOR, BY MESNE (LIN FIREARMS COBPGRATION, OF NE'W' HAVEN, CON- NEQTICUT, A CORlORATIOH O33 DELAWARE.

FIREARM.

Application filed May 29, 1920, $eria1 No. 385,210. Renewed November 17, 1925.

1 c all whom it may comer n.-

Be it known that l, CARL Gostrar Swu stuns. a citizen of the Quited States, to siding at New Haven, in the county of New Haven and State of Connecticut, have inveuted certain new and useful improve ments in Firearms, of which the following is aspecification.

This invention relates to firearms and is' directed more especially to means for extracting a shell from the barrel of the gun and ejecting it from the gun.

The object of this invention is the .provision of a device of this character which is. simple in construction and efiicient in 7 operation.

The subject matter of this application is disclosed partly in my application filed January 24, 1919. Serial No. 272,846, and partly in my application filed May 15, 1919, Serial'No. 297,201, but claimed in neither.

Referring now to the drawings,

Fig. 1 is a longitudinal section through the receiver of a gun with the breech bolt in elevation;

Fig. 2 is a plan view of same with the top of the receiver removed;

Fig. 3 is a front elevation of the breech bolt;

Fig. 4; is a fragmentary sectional view of the forward end of the bolt;

Fig. 5 is a view similar to Fig. 1 of a modification Fig. 6 is a plan View thereof:

Fig. 7 is a perspective of the modified ejector.

The breech bolt 1 is slidably mounted in the receiver 2, in the bottom of which is the ejecting opening 3, and in one side wall thereof isthe aperture 4 through which cartridges are fed into the gun from a i'nagazine 5. The breech bolt is operatively connected with the act-ion slide 6.

A rib 7 extends along one side of the breech bolt 1 and is provided with a groove 8. In this groove there is mounted, for limited reciprocation. an ejector 9, the front end of which is oblique, and the rear end ejector is another lug 12 which is engaged one end oi the sprlng 13, located 1n a ssion in the bottom of the groove 8.

run'enieut of the ejector and also serves to normally hold the ejector in its rear position. The ejector is positively held in. the groove by the engagement of the lug 10 in the socket 11 and by the overhanging dog 14 located in the rear portion of the breech bolt, which may be pressed in against the action of its spring 15 to allow the removal of the ejector.

In the front end of the breech bolt is cut a recess 16 having a depression 17 in its upper rear end and a socket 18 in its rear wall. An extractor 19. having a lug 20 adapted spring serves to limit the forward to fit into said depression is located in the be lifted out.

against the action of the spring In operation, the breech bolt chambers a cartridge, and during such operation the extractor engages the cannelure of the cartridge. As the breech bolt moves rearwardly the extractor carries back the shell. When the breech bolt reaches nearly the limit of its rearward travel, the rear end of the ejector engages the rear wall of the receiver and causes a movement of the ejector relative to the breech bolt. This relative movement projects the front end of the ejector against the shell and forces the latter-out of the grip of the extractor. The cartridge then falls down through the aperture 3.

The modification disclosed in Figs. 5 and 6 includes a plate 30, slidably mounted in a cutout 31 on the breech bolt, which plate is provided withthe arms 32 and 33 fitting in the grooves 34 and 35 in the bolt. .At the forward end of the plate is the spring-pressed pin which engages a shoulder 36 on the breech bolt and serves to normally hold the ejector in its inoperative position. The rearward movement of the ejector under the influence of the springpressed pin is limited by the engagement of the shoulder 37 on the arm 32 of the ejector with the inner end of "the groove 34-.

7 theejector may be lifted oil the breech bolt.

The operation of this type of extractor is similar to that of the first type and need not be described in detail.

It is understood, of course, that the particular device shown and described in the present application illustrates merely a preferred form of construction and an arrangement of parts, which, it has been found, will successfully carry out the prin ciples of my invention, and that various changes and modifications of details may easily be made ithout departing from the spirit of my'invention as defined in the appended claims.

7 hat I claim is: j V '1, In a firearm, a breech bolt having a slot therein, an extractor located in said slot, the opposing Wall and face of said slot and extractor being plane surfaces, a plane faced lug on said extractor seated ina plane Walled depression in another Wall of said slot, one face of said lug being coincident with said extractor face, and a helical spring having its ends projecting into sockets in the opposed Wall and face of said slot and extractorr "2:. In a. firearm. a breech bolt having a .slot therein, an extractor located in said slot,

the opposed Wall and faceof said slot and extractor being plane Surfaces, a lug on said extractor seated in a depression in another Wallot said slot, one face of said lug being coincident with said extractor face, and. a

spring interposed between said slot wall and said extractor face to hold said extractor in place, said opposed; slot Wall and extractor face being divergent whereby movement of said face into contact with said Wall permits the removal of said extractor from said slot.

3.111 a firearm, a breech bolt having a pair of grooves, an. ejector Ireciprocativoly mounted in one of said grooves, resilient rgieans acting in the direction of its path of reciprocation to nori'nally hold said ejector in [its inoperative position, a lug on said ejector arranged in the other of said grooves to prevent removal of said. ejector from said first groove When in normal position.

4. In a firearm, a breech bolt having a pair of grooves facing in different directions, an ejector slidably mounted in one of said grooves, resilient means to normally hold said ejector in inoperative position, a lug arranged inthe other of said grooves to limit the movement of said ejector under the influence of said resilient means and to prevent removal. of said ejector from said groove, said lug being entirely free of said second grove when said resilient means is fully compressed whereby said ejector may be I'Ql'llOVOCl from said groove 5. In a firearm, a breech bolt having a pair of differently facing grooves, anejector slidably mounted in one of said grooves,resilient means to normally hold said ejector in one position, and a lug carried by said ejector, said lug being adapted to be received in said second groove except when said resilient means is substantially yfully compressed whereby the removal of said ejector from said groove is prevented except when said lug is exterior of said second groove. 1

6. In a firearm, abreech bolt having a groove, an ejector lying in said groove, said .groove having a socketv in one side Wall, a

lag on said ejector arranged in said socket, and a spring pressed stud overlying the op posits end of said ejector.

7. In a firearm, a breech bolt, a groove extending longitudinally thereof, an ejector mounted in said groove, a socketin one "Wall of the groove at its forward end, a depres- Y sion in the bottom of the rear end, a lateral lug on the forward end and a, depending lug on the rear end of the ejector adapted to seat in the socket and depression, respectively, a spring interposed. between the forward end of the depending lug and the for- Ward wall of the depression, and a springpressed stud engagmg the upper surface of the rear end of the. ejector. V

8. in a firearm, a breech bolt, an ejector sl1dably mounted on said breech bolt, resili ent means acting in the direction of the path of reciprocation of said ejector to normally maintain it in inoperative position, and means for preventing the removal of said ejector from said breech bolt, said means being inoperative When said ejector is actuated to substantially fully compress said resilient means. I

9. In a firearm, a breech bolt having a groove, an ejector slidably mounted in said groove, and a spring pressed stud overlying said ejector.

CARL G SVVEBILIUS.

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