US1790482A - mossberg - Google Patents

Description

Jan, 27, 1931. o, F MOSSBERG 1,790,482

FIREARH Filed May 16, 19.29 2 Sheets-Sheet 1 Jan. 27, 1931. o. F. MossBERG FIREARM' Filed May 16, 1929 2 Sheets-Sheet 2 Patented Jan. 27, 1931 unirte STATES PATENT OFFICE v `r :OSCAR F. IVIOSSBERG, F NEW HAVEN, CONNECTICUT, ASSIGNOR TO O. F. MOSSBERG 8c SONS INC., OF NEW HAVEN, CONNECTICUT, A CORPORATTON FIREABM Appneation filed May 16,

This invention relates to an improvement in firearms and particularly to firearms ot' the lever-action type though not so limited.

One ot the objects ot' my invention is to provide a firearm with simple Vand eliective means for extracting and ejecting the shells.

Another object ot' my invention is to provide a lever-actionrtirearm at a low cost for j d manufacture with a simple and eective arm rangement of parts acting to simultaneously hold the lever in its retired position and the breech-block in its breech-closing position.

A further object of my invention is to provide a irearm with a simple arrangement oi parts for automatically eifecting the cocking of the hammer when the breech-block is moved into its breech-opening position.

With the above and other objects in view, my invention consists in a lirearm having certain details of construction and combinations and arrangements ot' parts as will be hereinafter described and particularly recited in the claims.

In the accompanying drawings:

Fig. 1 is a longitudinal sectional view through the receiver portion of a firearm embodying my invention, the parts being shown in the positions due them when the breechblock is in its breech-closing position and the lever in its retired position after the discharge of a cartridge;

Fig. 2 is a corresponding view but showing the parts in the positions due them when the lever is swung downward and the breechblock has engaged the pivotal ejector and has slightly moved the same;

Fig. 3 is a corresponding view but showing the parts in the positions due them when the lever is swung downward to its final position to eect the ejection of a cartridge-shell from the chamber of the gun;

Fig. l is a transverse sectional view taken on the line 4.-4 of Fig. 1;

Fig. 5 is a detached perspective view of the pivotal ejector; and

Fig. 6 is a similar view of the link which connects the breech-block to the operatinglever of the firearm. j

in carrying out my invention as herein shown, 1 employ a pivotal breech-block 10 1929. Serial No. 363,540.

located within a chamber 11 in the gun receiver 12 and hung at its upper rear end upon a pin 13 extending transversely across the said receiver.

The breech-block 10 just above described has pivotally connected to it by means of a transverse-pin 14 the upper end of a link 15, the lower end of which latter extends into a longitudinal groove 16 formed in the upper face of an operating-lever 17 and is pivotally connected to the latter by means of a. transverse-pin 18.

The operating-lever 17 just above referred to is pivotally mounted at its forward end, which is located partially within the chamber 11 ot the receiver, upon a pin 19 extending transversely therethrough and is shaped to form a trigger-guard 2O and a loop-shaped operating-handle 21 at its rear end.

Pivotally mounted upon the pin 19 upon which the operating-lever 17 swings and having its lower end located in the groove 16 in the said lever, is a pivotal ejector 22 having an upstanding ejector-arm 23 which is formed in its extreme upper end with a semicircular shouldered notch 24 adapted to receive the lianged rear end of a cartridgeshell 25. The ejector 22 is also formed at its upper rear corner with an abutment-nose 26 and at a point nearer the pin 19 upon which it rocks, with an abutment-surface 27 for the purpose as will be hereinafter described.

The breech-block 10 is formed with a longitudinal bore 28 enlarged in diameter at its rear end as at 29 and receiving a reciprocating tiring-pin 30 having a head 31 located in the enlarged portion 29 and adapted to be engaged by the forward face of a pivotal hammer 32 located mainly within the chamber 11 of the receiver andvrocking upon a pin 83 extending transversely therethrough.

`The said hammer 32 is formed in its lower end with a half-cock notch 34 and with a full-cock shoulder 35 adapted to be engaged by the forwardly and upwardly pointed nose 36 of a trigger 37 which has its upper end located in the chamber 11 in the receiver and is mounted therein upon a transverse-pin 38 and isformed with a linger-piece 39 projecting downward from the receiver.

The hammer 82 is provided with the usual Vfinger-piece 43 by Vmeans of which it may seated in a conical pocket 45 in the rear face of the hammer 32. The-plunger 45 bearsat its rear end in a -guide-passage-Ll? in thefreceiver l2 and is provided about midway of length with a spring-abutment collar i8 engaged by the forward end, of the; spring 40st,.-

the rear end of which bears against the portion of the receiver adjacent the passage 4:7 therein;

rlhe forward lower edge of the breech- Vblock l0 is cut away to form av transverse ffl-he sa-idconically-contouredj head 55 ofthe plunger 52 is. adapted to engage either the right-angled notchL 49 which results in the formation upon the said-breech-block of Aan abutment-nose 50 adapted to enga-ge the abutment-surface 27 ofthe ejector and with an abutment-surface 5l adapted to co-act with the abutment-nose` 26 ofthe said ejector, as will be hereinafter described.

F or thepurpose of simultaneously yieldingly holding the breech-block l() in its breech-closing position .and theVoperati-ng.- lever l? in its retired positiom. as shown -iiir Fig. l of the drawings, as Well a-s for propelling the said `partsinto their downwardlyrocked position. shown in F ig. 3 of the draw-4 ings, after they are manually started toward such` position, l employ a detent-plu-nger 52 reciprocating within alongitudinal socket 53 located in the breech-block l0 at a point below and parallel with the firing-pin 80- before described.

rlhe rear end of the said detent-plunger 52 is encircled by a helical spring 54 which beats at its rear end aga-inst the closed rea-r endl of the socket 53 and at its forward end1 iinpi-nges againstA the rear face of the'conically-contoured head 55 of the said plunger;

lower-sloping face 56 of' a latching-nose 57 formed upon the link l5 VVor the upper sloping' face 58 thereof for the kpurpose as y will hereinafter appear.

shown in Fig. l of the drawings, the parts of my improved firearm kare shown in; the positions due `to them immediately after the trigger 37 has been operated to release the to swing the operating-lever ll downwardhammer Y32 to the action of its spring ltfor VVand forward by means vof its looped handgrip 21. c

ln so doing the link l5 connecting the operating-lever 17 and the breech-block will eX- ert a downward pull upon the said breechblock with theeifect of swinging;,its,forward enda'out :of line with the.- chainber' 6.01 iin the vbarrel 615 during which operation the detentplunger 52 will be eammedrrearward by the nose :5T-ofthe said Yli'nl'; luntil such `time the `higlfi-rpoint ofthe Ksaidnose passes the .apex of the conical head of the said plunger.

' As soon as Vjche just above described action hasnoecurredythe.head 53 of the plunger 52.

will ride overtlieupper face 58 of the nose 57 of the linkil and exert any effort to swing the operating-lever- 1:7 and the-breech-zbloickf 10 rapidlydownwardv withv the eect offfirst'Y engaging the;V abutment-surface 514 vof the breech-blocli'with the abutment-nose26r ofthe ejector,. as shown in Fig. 2k of the drawings,

so as to rock the' ejector 22 relatively slowly but powerfully rearwardy to loosen c andi slowly extract .the cartridge-shell 25, andthen of'engaging the nose50 of the breech-block 110 with the abutment-surface27of thesaid-ejec-f tor Vfor rocking; the saine more rapidly, with the .ultimate eect offlppingthe. cartridge 25 fromthe chamber 60 and causing the saineto: ride rearwardly and upwardly through a,

curved lonitudinal guide-channel 62 formed in the upper edge-ofk the breech-block. l-O- and thence completely outlo'f vthe firearms.

rlyhe'initiallly-slmmv and powerful movement. ofthe -ejector22 effected by first engaging the abutment-surface 5l of the breech-block with the abutment-nose 26e-f the ejector is dueto the fact that the said nose 26 is locatedl .a

greater distance from the pin 19 upon which the-ejector rocks than is itsabutment-surface engaging surfaces are much nearer the pin 19l upon which thef said ejector. rocks. f

I. thus Vprovide a two-speed ejector having,

a relatively-slow but powerfuly initial move-- ment to loosen the cartridge-shell and a fina-l rapid movementto flip or eject .thesameffrom the firearm.

When the breech-block .has been swung;V

downward'by the manipulation of thevoperating-lever 17,' as previously described', the hammer 32 will be rocked rearward against the tension of its springlhby a cooking-nose 'i 63 formed .at theprear 4end ofthe said. breechblock and engaging the forward edge ofthe saidhammenasshown inthe drawings. The

said cooking-nosev 63 is Vsciprop-)rtioned las. .to

move the hammer 32 rearward. just enoughv topermit the entry `ofthe nose 36. ofthe trigger into the half-cock notch 32 ofthe said.

e pressed means acting upon the detent-nose of the said link to yieldingly hold the said lever in its retired position and the said breech-block in its breech-closing position.

2. In a lever-action. firearm, the combination with a pivotal operating-lever and a pivotal breech-block; of a link connecting the said operating-lever and breech-block and formed with a detentfnose; and springpressed means carried by the said breechl block and acting upon the detent-nose of the said link to yieldingly hold the said lever in its retired position and the said breech-block in its breech-closing position.

tor located in the path of travel of the said breech-block; the said ejector and breech-V block being so positioned with respect to each other that the said breech-block in moving from its breech-closing to its breech-opening position will first engage a portion of the said ejector relatively distant from the pivotpoint thereof and then engage a portion relatively nearer the said pivot-point; and a spring-pressed plunger co-acting with the nose of the said link for swinging the said breech-block into engagement with the said ejector Vwhen the breech-block has been initially movedmanually from its breech-closing position; whereby the said ejector initially receives a relatively-slow and powerful impulse to loosen a cartridge and subsequently receives a more rapid and weaker impulse to eject the said cartridge from the arm.

In testimony whereof, I have signed this specification.

OSCAR F. MOSSBERG.

3. In a lever-action rearm, the combination with a pivotal operating-lever and a horizontally-arranged pivotal breech-block positioned above the said lever; of a vertica1- ly-arranged link connecting the said operating-lever and breech-block and formed with a detent-nose and a horizontallyarranged spring-pressed plunger carried by the said breech-block and engaging the detent-nose of the said link to yieldingly hold the said lever in its retired position and the said breech-block in its breech-closing position.

4. A firearm having a pivotal ejector and a pivotal breech-block adapted to actuate the said ejector, the said parts being so shaped and positioned with respect to each other that the said breech-block in moving from its breech-closing to its breech-opening position will irst engage a portion of the said ejector relatively distant roin the pivot-point thereof and then engage a portion relatively nearer the said pivot-point; and a spring-pressed member' carried by the said breech-block for forcing the same into engagement with the said ejector after the said breech-block has been initially moved manually from its f breech-closing position; whereby the said ejector initially receives a relatively-slow and powerful impulse to loosen a cartridge and subsequently receives a more rapid and weaker impulse to eject the said cartridge from the arm.

5. In a lever-action firearm, the combination with a pivotal operating-lever and a pivotal breech-block; of a link connecting the said operating-lever and breech-block and formed with a detent-nose; a pivotal ejec-

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