US2334798A

US2334798A - Bolt-action firearm

Info

Publication number: US2334798A
Application number: US280221A
Authority: US
Inventors: Carl G Swebilius
Original assignee: Western Cartridge Co
Current assignee: Western Cartridge Co
Priority date: 1939-06-21
Filing date: 1939-06-21
Publication date: 1943-11-23
Anticipated expiration: 1960-11-23

Description

' Nov. 23, 1943.

C. G. SWEBILIUS BOLT-ACTION FIREARM Nov. 23, 1943.

c. cs. swEBlLlus 2,334,798

BOLT-ACTION FIREARM Filed June 2l, 1939 2 Sheets-Sheet 2 detached; and 1 Fig. 9 is a perspective Patented Nov. 23, 19.43

ila-rlr Swebilins,V Hamden, Corni., assignorV to Western Cartridge Company, f 'Conn., a corporation of Delaware few Haven,v 1

apaisante ren'zvi, 1939, serial Nelaeoziff f e creams. 'l '(el. Vetz- 17) -V The present invention-re1atesto improvements in bolt-action rearmsfand relates morejiparticularly V,to a construction `andiarrangementY of parts for the retention in place-of aholt-operating handle or itsequivalent. -A Y a f Oneof the objects of the present :invention is to provide-a superior bolt-action frearm'fconf structionwherein 1al boltfoperating handle'ris; retained in operati-ve association `withthe rejarmi-structure biz-simple, yreliablearid.-effective means.' e Y y ..4

Another object of the present -finventionis to provide a superior bolt-action 'firearm-.construction wherein a'ggremovable breech-boltiis employed and wherein' the, bolt-:operating .handle is ven-tion, is ofthe automatic type Whereina' retained in place against: dislodgementawhen i the breech-boltis remove'dzirom the receiver.l of Athevrearm, byrrmeans of liring-member-nor mally associated with' the said breech-bolt.' :'r

A -further objectief Vthejpresent invention is.' to provide ya superior bolt-action rearrneconstruc.- tion wherein a -breech-boltis providedf-withia 'laterally-projecting operating-handle'- whichxis so associated in, cooperative relationship with the receiver as to lavoid crampingaction-'orvune due frictic'on.A

With the above and other objects inlviewyas will appear 'to 4those skilled 'in-fthe art fromuthe present disclosure, this` invention includes all features inthe said disclosurejwhich arenovel over the prior art and which arenot claimedin any separate applicationfY i Y In the accompanying drawings, in .which cer'- tainmodes lofpcarrying out thepresenti inven tion rare shown for illustrative-purposes:- Fig. lisa ,broken view in side elevatiorro a bolt-action firearm embodyin'gg'the present'zi'n'- f 'ventiom` Y p i. Fig. 12- isgal broken lviewiin: verticalcentrallongitudinal `section 'with-the barrelg magazine and 'some offthe associated partsjshown inside' elevation,l and with the breech-bolt in ts position; ,Y f Y z Y Fig. 3 is a transverse sectionaLviewtake on The particular l bolt-action .rearrn herein chosen for the illustration `of the present. infjust-red cartridge isf automatically'` extracted and a fresh cartridge automatically inserted-into the cartridgechamber of ther irearrn.` The said firearm includes-three'majorl components, naine'- ly, afreceiverV lli, a barrel IH andastock I2.

,i The receiverl is.A cylindrically contoured exteriorly andphas` its forward endfrinteriorly threaded for.the threaded( connection of lthe exteriorly threaded rear portionofr the barrel H, as-,is shownin ,1Fig..2 o f the drawings.. Ex-

tending substantially throughout uits length, the.Y

receiver y I is formed''with" 'a downWardly-openf ing bolt-receivingkchamber lr-rhaviung` itsl upper half cylindrically contoured to. conform to the similarly.: contoured, `upper half ofca `reciprocatingbreech-ibolt generally Ydesignated )the ref.- erence character AI 4. Theusaid breech-bolt hl =is retainedinplace inthe bolt-receiving chamber :I 3 linthe receiver i @against downward'` dispiacement therefrom, by a bar-like mounting-finemher generaliyedesignatedby the reference character L15. VThe `said A mountingfmember projects s slight,-

ly upwardly into the-lower portion ofv the Jooltreceiving,-chainloer r l'3fir1 vthe said receiver 1Q. as lwill be particularly .well .observable.hy,referee encevtoJFigB;` f

- The har-like mounting-member.- `l5A 'r'abovelre-.V-

,ferre'd tofincludes two substantially-correspond ingeparallel side-plates I5 and ..i'l which are laterally spaced` from `each :other to, vprovide a centralY longitudinal f andvertical channel `I 8, Vhy

. arrear spacing-block'land afrontspacing-blocir 2li, as is shown Yin Fig. 2.

The upper portion of the rearspa-cingj-cblocl;

.-vl9'projects above the 'upper surface vof the side-'- plates I6: and |1'Lof5the mounting-.member l5, to `form a-headl which conforms ini crossvsectional form to the transverseform ofthe bolt .receiving chamber .It in' the-;;1',E,Ceiver`v it..." 'lfhe .head 2|' of the rearspacing-block I9 ier-formed with arearwardlyeprojecting coupling-.extension 22 (Fig. 2) -rwhichabrite-'against the; forward face oi-therearwallfm 0f `the receiver t0n and V2d projecting forwardly-from the lower lportion of the said. rear wallf23. fAs thus arranged,`the

said coupling-extension v22 and the coupling-lip 2d serve to normally prevent the downward movement of the rear portion of: the mountingmember l5 with respectto v the holt-receivingy charn-k =ber i3 in thereceiverl. Y f Y :ff

i Projecting rearwardly from therear spacingtreedt-,tomas fweii as. when Ythe trecnfboiu 'is ,in jitsf -breecl'rfclosing position, the bolt-operating '-handl'ewill be retainedlin place against axial dsplaementQby-th ,prtensoffthe firearm Strudture hichextend into the`retaining-notches 58 and (1a profile ,said handle.;

'Y l Vi efinitial rearward mv vementof the breechf bolt I41will cause the Vdisconnect-ing-cvam 158 there" fitos'o engageV the cam-surface 4T env the forward fend ofthe anger '4s ofl the transmitting-mem; ber- A5 as 'to ro'ckthe said:transmitting-member in a" 'counterclockwise `direction "about theV pin 5I'. -By this-action, the upper end ofthe bodyportion M of the' transmitting-member 45 .will beswungvrearwa'rdly clear 'of the actuating-abutment 43 ofLthe sear AEIso that 'in the event that thetrigger'53is actuated, the se'ar will .not

itself ber actuated but the said transmittingmember 45 will be. merely idly and inefiectively lifted,k V i Y i !1As".the' breech-boltIv continues its rearward Vtravel after having rocked the :transmittingmemberas above'described, the finger 46 of the y saidl-transmitting-member willride idly through the clearance-passage 49 in lthebreech-bolt 'I `and through theclearance-notchfI-I inthe boltoperatingr-handleSS.' Y 1 f l' .As the' breech-bolt I4 approaches the limit of l its rearward movement, the cooking-abutment 3B of vtheiiiring-plunger36 will be moved to the rear of' the Sear-nose 39 so thaty the latter may snap down in front thereof. Y

Also as the breech-boltM approaches the limit of its rearward travel, the foremost one of the cartridgesilwill move up in front of the riorward face ofthe said'breech-bolt in position to be loaded into the firing-chamber of the firearmv when the breech-bolt is closed by the breechclosing spring 6I. Relaxation of the rearward draft upon the finger-piece 65 of the bolt-operthemounting-member*I5 from its association withthe said receiver.. This Yremoval ofith'e mountig-member'may be effected by rlrst'back-l rear-lend' '291 outA of -the coupling-pocket '28-inithe `member :may berswung downwardly about *the coupling-'lip-Qll as av fulcrum and*ultimately `moved' downwardly andA forwardly-to completely 'dis'engage the couplingeextens'iony 22 off'the rear spacing-block' I 9 frornl the coupling-lip k2t of the receiver I.:r y .i a i`A j *iWhen the breechbolt 'I4 has4 been removed from the receiver I0 by first removing the mountin'g-member`l5 vas above. described, the bolt-operrating handle`55 will-no'l'onger'be retained against o i axial displacement by the intertting of vportions of .the-gun structurewith its'retaining-notches 68 andfl. However, whena-the; breech-boltl is free of the receiverI and associatedgparts',v as is shown inFigs. 5 to,-'7linclusive,the bolt-.operating handle $5 willbe retained against axial displacel ment by the extensionof thelower'portion of'Y y the firing-plunger gthrough the ring-pin-receiving notch 61 intheupperface of the shankj 64 of thef'saidizhandle VE55.' .Shouldit bedesired-to is only* necessaryv c now toV withdrawY fthe firing- .40 ating handle 65 will permit thevbreech-closing l spring Bi to vmove the-breech-bolt into its breecho closing position to insert a cartridge into the ring-chamber of the ilrearm land to leave the firing-plunger 3B held in Vits rearmost or cocke position by the sear. d0. r

As the breech-bolt I4 reaches substantially its breech-,closing Vposition the disconnecting-cam 48 thereof will move into `position to permit the transmitting-member 45 to rockin a clockwise direction and thereby again position the upper end ofthe body-'portion 44 of the said transmit-1 ting-member into position to engage with the actuating-abutment 4'3 of the sear 40 when the trigger 53 is pulled.V The firearm is now in position forring which may be accomplished bypulling the trigger 53.`

SinceV the rearm shown is of the automatic type the pulling, of the trigger 53 and the consequent release of the iiring-plunger 3S will dis-V charge the firearm and the recoil developed byv the just-fired cartridge will kick back, so to speak,

thehreech-bolt I. and the parts carried thereby and thusV automatically effect the same series lof operations as was described in connection with the manual retraction ofthe said breech-bolt.

It will be seen from the foregoing, that the4 Vinterfitting of portions of the firearm-structure with the retaining notches S8 and 'FB of the boltoperating handle65 will serve to hold the latter inV place against axial displacement while the `breech-bolt is in place in the receiver. I9.

Should it be desired for any reason to remove.

the breech-bolt I 4 `and the parts carried thereby from the receiver I0, it is rstnecessary to remove 'plung'er rearwardly-from thesaidbreech-bolt Y Y I whereupon the said bolt-operating handle will be freed for withdrawal from the handle-receiving pocket 63 in the said breech-bolt.

The invention may be carried out in other specic .ways than those herein set forth-,without Vdeparting from thespirit and essential characteristics of the invention, and the present embodimentsare, therefore, tobe considered inall respects as illustrative andv not restrictive, and' all changes coming withinthe meaning and equivalenoy range of the appendedclaims are intended' to be embraced therein.

I claim: 1

l. A .bolt-action firearm including inA combination;v a receiver-unit comprising a tubularA receiver having a bolt-receiving chamber therein and also having a handle-'retaining portion, and a bar-like mounting-member removably'coupled tothe said Y tubular receiver; a breech-bolt reciprocatable in the bolt-receiving chamber of the tubular receiver of the said receiver-unit and provided with a longitudinal plunger-receiving passage and with av transverse handle-receiving pocket intersecting the said plunger-receiving passage and opening through the side wall of the breech-bolt; a ringplunger movable in the plunger-receiving passage in `the said breech-bolt; and a bolt-operating handle removably installed in the handle-receiving pocket in the said breech-bolt and having a clearance-cut'therein in line with the plungerreceiving passage inthe said breech-bolty to-permit the' -free movement ofthe saidvfirng-plunger,

` the said bolt-operating handle also having two outwardly-facing abutments respectivelyy positioned to engage the handle-retaining portion of the tubular receiver of theV said receiver-unit and aiportion ofthe bar-like mounting-member.

2. A bolt-action iirearm including in combina-v tion: a breech-bolt provided with a longitudinal plunger-receiving passage and with a transverse handle-receiving lpocket intersecting the, said plunger-receiving passage and opening through the side-wall of the breech-bolt; a receiver-unit comprising a tubular'receiver havinga longitudinal bolt-receiving chamberr accommodating the mmf@ mandaban-me mime-fr 3? A- bult-action reaazmfmckzdgng i ti passage leadingrdmynwdly c willing: hQMh'IhQ-llldewefdf $12" .receiver gandrhwmgraswmthcandjenzthrsunchnt to the :verticaal ginsbailinnc'innznd Vremoval/1131 'the rsaid breech-boit 1mm: the

tubular receiver and havinggpwardly-fcinktuhdbehambazcgf ating :handie removabhy he .handhezan outwardly-maing- Mment'pnsioned gb' c engage a, portionof the said ,in -rescram the saldi-fhandlel'agaihstiml-gopmrd