US1549235A

US1549235A - Rifle bolt

Info

Publication number: US1549235A
Application number: US629900A
Authority: US
Inventors: Valero Jose
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-04-04
Filing date: 1923-04-04
Publication date: 1925-08-11
Anticipated expiration: 1942-08-11

Description

M411, 1925.- 1,549,235. J. VALERO RIFLE BOLT Filed April 4, 1923 i fiiand usefullmprovements in Rifle Bolts, for which the followingiisa full and complete companyinga drawing"..-

improvements? in rifle bolts and inv particular to those. adapted :tdorformingpart of riflesof the JMauser type'. It is' an object I ".of the inventionto provide a rifle bolt of maximum efficiency, simplicity of construcorJrOu'gh treatment.

More particularly (my invention deals with a striker-bar andsits as'sociated-strik ;ing pin so designed as to permit the replacecfmentlof the latter when occasion demands I without entailing the replacement orreadi .-justmentofother parts of -the bolt :mechanism': 1 7 Furthermore; the design hereinafter more fully described permits-of greater ease-in i 1 ficocking .the striker inithe event-thesame is.

necessary due to. defective ammunitlon and where itis undesirable" to m ye the "bolt apart, a rifle bolt which includes'these improveme'nts'will be found to have material II: advantages ,over' those 'of the conventional -typle; as there will'be no' 'requirementgfor the ".35lexerti0n of considerable force, nor thebver- *"Pcoming of-the friction of the partsnor the 1 useof the parts from the device'itself as Tl'instrumentalities inthe disassembly. r

For-"purposesofillustrationandas'show.

if ing' one form in which my invention ay be 'embodied in'the drawings: V

Fig. 1: is a plan view of a IlfldbOlll;

and striker; a a 1 I p Fig: .3 isja vertical elevationofone end' of vertical section on

line

3,3 of Fig.1;

. FigrA: is avertica'l 'section takenonthe line-4, 4 of Fig. 1; l Fig. 5 is an elevation taken on the line Fig. 6 is a side view of the front head piece with the associated-striker-bar; and Fig. is aside view of the striker. i V

'I have shown my invention as adapted to "the conventional cylindrical .bolt of the i V i v if I i 7 vie-13nd, if

7 :1 a'pp ieaeen fiied' 'a rfn a; 1 923 sens; No. (529,900.

in the accompanying drawings ."Thlsia -wBeit known that I, J st V MIJERO, a citizen v g has the-customarysidelug'12 and eperat'' I specification, reference being had to the ac' V 1 l-This invention relates to new and useful 7 i 1 tion and also less liable to'damage from wear:

M For? convenience o'f asseinblyjand taking {Fig 2 is-a plan. view of the striker-bar themechanism, part ofwhich is shown in Mauser generally in'g' lever;13.= Immediately in the rear Iof A cocking sleeve 17 of Jhollow construction v i g is journalledsupon the reduced portionlle" and'has a forward cam shaped end 18 which cooperates withthe lever 13 duringthe' op" eration of cocking. This cocking sleeveli'l? has on its lower face a detent or lug 19 .7 which is held and released by the searof. f

the rifleiin the customary mannen lnthe'g rear of the detent, 19 the sleeveisrecesse'd as at 20 to receive-the .cocking"piece as-will l The upper portion'no'f the "F sleeve has two aupstandi-ngears 2l, 22,' thei-n-1L later appear.

termedia'te spa'ce being open above the recess 16in the reduced end of-the sleeve 11. Tl1e' safety catch. I lever 23, extends between the v earsl2 l and.22 andhas a. lowermost portion 2ffextending into the rece'sslfiwhenin the i safe position but riding over the reduced end 1% inthe' ready? position. {The upper portion of'thesleeve.isdrilled to provide the? longitudinal chamber" which-carries" the pivot in '26, extending 1 forwardly through the ears 22 and 21 and the intervening catch 24.. ;Aspring '27 extends between a shoulder on the pin 26 and theopposite ear 22.'- The upper portion of the pin 26 is grooved to v receive the end ofthe adjusting screw 28 which limits the reciprocation of the pin 26 under the influence of the spring 27.? The 1 screw permits the movement of the pin :26

to'the rear so'that the latter may project; 7 v slightly-beyond-the rear wall of' the sleeve 17 and. forma lockforthe cocking piece 29.

,The cockingpiece, as shown'in Figs; 3 and 4, is of the usual form having an enlarged end 30, a recess 31 on-the front face and a '1 7 forwardly-and upwardly; extending toei32.= i

The toe is adapted toslide in a groovein the} lower wall of the sleeve 17 andthen in a circumferential recess 20 to form a bayonet joint of about 45. Themovement of the cocking piece brings the recess 31opposite the spring held pin 26 resulting inthe-latter entering the recess and locking the cocking piece against accidental'removall The cooking piece 291s drilled akiallyl'a s at 33 and contains enlarged recesses 34 which receive the end of the striker bar.

Carried centrally in the bolt 11' is the striker bar 35. This bar has at one end a reduced portion 36 with lateral enlarge ments 37. The reduced end 36 is carried within the recess 33 of the cocking piece to which it is locked by means of the enlargements 37 in the manner shown in Figs. 3 and 4. The oppositeend of the striker bar carries a flange 38 against which spring 39 presses.

The spring 39 is held under tension against an interior flange of the receiver 11 in the usual manner. On the striker bar 35 and in advance of flange 38 is a flattened blade 40 in which is a slot terminating in a semi-circular or enlarged cross slot as shown in Fig. 2. The firing pin as shown in Fig. 7 consists of a member 41 having one end enlarged to a cross section 42 enlarged to correspond with the semi-circular slot in the chamber 40. The opposite end of the pin is tapered as shown.

The forward end of the bolt has two upstanding ears 43 and a corresponding diametrically positioned ear 44. This is shown more particularly in Fig. 5 which likewise illustrates the side grooves 45. The extractor head 46 is shown in Fig.6 to be carried on the fiat blade 40 of the striker bar, with the firing pin 41 projecting through the end of the extractor head. The extractor head has opposed locking lugs 47 which ar received in the-grooves of the bolt and locked therein by means of angular movement.

The exposed face of the extractor head has a peripheral flange'48 and circumferential flange 49 of' the usual type and including a spring held extracting finger, not shown.

It will be apparent that this bolt mechanism is assembled by sliding the sleeve 16 over the reduced end 14 of the receiver 11 and locking the two together by means of the safety member 23. The striker bar 35 surrounded by spring 39 and carrying on its end 40 the extractor head 46 is inserted through the forward end of the receiver 11. In this position the end 36 projects in the rear of the reduced portion 14 and receives the cooking piece 29. Rotation of the latter serves to lock the striker bar in the cooking piece 29 in the manner previously described. At the same time rotation of the extractor head 46 will have locked the same inside the receiver by means of the lugs 47.

l/Vith the safety member 23 in the ready position, the cooking piece maybe retracted by the operator. This movement constrains the sleeve 17 to move back with the toe 32. It will be obvious that a similar result is obtained by lifting and lowering the handle 13. The backward movement of the cocking piece 29 draws back the striker bar 35 and pin 41 against the force of the spring 39,

the member 40 sliding within the slotted channel of the extractor head 46. In its retracted position the cocking sleeve 17 and the associated parts are firmly held by detent 19 against the sear of the rifle until the latter is released by the trigger.

It will be apparent from the above description that a rifle bolt constructed as described will be of great efliciency, simple in detail and durable under severe operating conditions. Likewise, the firing pin or striker may be readily removed and replaced in case of damage. The construction specifled is well adapted for ease and speed of use. Whil I have described one form in which my invention may take, it will be evident that numerous changes in minor details may be made without departing from the scope of the claims.

\Vhat I claim as my invention is:

1. In a rifle bolt mechanism, including a bolt proper, a striker bar therein and having its rear end extending beyond the bolt, a sleeve journaled on the bolt, a safety lock connecting the sleeve with the bolt, a cock ing piece carried by the :end of the striker bar in contact with the sleeve and a pivot pin for the safety lock and adapted to prevent relative movement of the cooking piece with respect to :the sleeve.

2. In a rifle bolt. mechanism, including a bolt proper, a striker bar therein and having its rear end extending beyond the :bolt, a sleeve journale'd on the bolt, a safety lock connecting the :sleeve with the bolt, .a cocking piece carried by the end of the striker bar in contact with the :sleeve, and a spring held pivot pin for the safety lock adapted to prevent relative movement :of the cooking piece with "respect to the sleeve.

3. In a rifle bolt mechanism including a bolt proper, a striker bar therein and having its rear end extending beyond :the belt, :a sleeve j'ournal'ed :on the iboltya cockiing piece carried by the end of the striker bar in contact with the sleeve, a pivot pin jou-rnaled in the :sleeve, and a safety lock on said pin, said lock movable to lock against a recessed portion of the bolt.

In testimony whereof, I have hereunto aflixed my signature.

JOSE VALER'O.