US1305830A - Rifle-bolt. - Google Patents

Description

T. 0. MUDD.

RIFLE BOLT.

APPLICATION FILED oCT. 2. w16.

Patented J une 3, 1919.

2 SHEETS-SHEET l T. O. MUDD.

RIFLE BOLT.

APPLICATION FILED ocT. 2, 1916.

Patented June 3, 1919.

2 SHEETS-SHEET 2.

THOMAS 0. MUDD, OF LAREDO, T

RULE-BOLT.

out necessitating any changes in therie,

and to construct said bolt of a materiall less number of warts A further o )ect of my invention is to provide a, rifle bolt ofV s1mp1e constructlon, thereby facilitating the assembling and disassembling of the bolt for cleaning, ollmg, etc.; 'a further object ofrny invention 1s to provide a riile bolt which 1s,'for all practical purposes dust proof; a still further ob]ect of my invention is to reduce the length of the striker.

A further object of my invention 1s to so construct the bolt that the parts thereof may be withdrawn for cleaning, etc., without removing the bolt from the receiver;

A- still further object of my invention is` to eliminate all screws and springs, except the main spring ofthe bolt, and with these and other objects in view vmy invention consists of the parts and combination of parts as will be hereinafter ointed out.

A' further object o my invention 1s to construct a rifle bolt that can be taken apart by a simple turn ofthe cooking piece, when this together with the cooking sleeve, and

`safety-caribe removed for cleaning, oilng,

etc., without'removing the main bolt casing from the receiver.

A further object of` my invention is to so construct a rifle bolt, that the main spring, irin pin bar, and striker can betaken apart for c eanng, oiljng, etc., by a slight turn of the fi pin bar head.

A furtlier object of my inventlon 1s to construct a. rifle bolt in which the firing pin bar is extra heavy and strong, and which can be used almost indefinitely, notwithstanding it is the part' that performs the hardest work.

A further object of my invention is to construct a ritle bolt that has a striker, that is very easy to remove, and-almost inexpenslve to replace.

In the drawings za A Figure 1 is a vertical longitudinal sectionalhview of a' standard U. Sfmagazine Specication of Letters Patent.-

Application led Octobe 2, 1916. Serial No. 123,435.

Patented June 3, 191e.

rifle, (model of 1903) embodying my invention.

Fig. 2 is a side elevation of the receiver and bolt removed from the' rifle, the parts being in fired position.

Fig. 3 is a similar view showing the han-4 dle about to be depressed to lock the bolt.

F ign/1 is a detail elevation showing the handle in depressed or lowered position.

Fig. 5 is a side elevation of the firing pin bar and striker, or tiring pin, secured thereto.

Fig. 6 is ya plan View of the striker detached.

Fi 7 is a perspective view of the assembled 1t removed from the rifle.

Fig. 8 is a front elevation of the |bolt detached from the rifle; Fig. 9 is a transverse section through the cooking sleeve 26 and associated parts; Fig. l0 is a rear elevation of the cocking sleeve 26.

Fig. 11 is a side elevation of the Safety catch.

Fig. 12 isa side elevation of the bolt head.

Fig. 13 is a side elevation of the extractor.

Fig. 14 is a detail plan view-of the rear end of the bolt.

The rifle used for the purposes of illustrating my invention is the 1903. model of the U. S. magazine rifle and therefore it Iwill be unnecessary to describe the same in detail.

According -to my invention the bolt 1 is provided at its forward end with top and bottom locking lugs'2 and 3 andthe ,usual operating handle 4. The top` lug 2 is provided with a slot 2'"i through which the usual ejector passes as the bolt is moved backward and forward. ,The rear end 5 of the bolt is of reduced diameter andis provided with aI shoulder 6 and recesses 7, said recesses being adapted to receive the safetylatch toA be hereinafter described.

The bolt head 9 is provided with an opening 10'through whichvthe striker'projects, the outer end of the head having an opening 10 terminating at the top in two upwardly extending spared lugs 11, said collar having a transverse groove 12 at the bottom. The bolt head is provided with two rearwardly extending arms 1B, 14, the arm 13 being grooved at 13a longitudinally in alinement with'the spacebetween the lugs 11 to receive grooves intercept an annular groove 17l in the inner face of the bolt, whereby when the firing head is revolved it is'locked to the bolt. The firin pin bar 18 is provided at its forward en with a collar 19 beyond whichl projects a flat member 20 ,which is ada ted to t singly between the arms 13 14 o the .bolt head, the forward end portion of the member or head 20 being provided with an undercut groove 21' into which the striker or firing pin22 is adapted to be secured. The striker-is provided with a reduced central y portion-23 and ahead 24, said head engaging the undercut portion of the groove 21 wherebythe striker is firmly, but readily detachably, secured to the firing pin bar 18. It will be noted that by my invention I am enabled to materially reduce the length of the striker. The rear end of the striker bar is flattened on two of its sides and is provided With two pairs of oppositely disposed lugs 25.

The cocking sleeve 26 is adapted to have a neat sliding fit on the reducedportion 5 of the bolt and is revolubly mounted thereon, the firing pin bar 18 extending rearwardly beyond the cocking sleeve; said firing pln bar being secured to the cocking sleeve by means of the cocking piece 2'6" which is provided with a forwardly extending arm 28 having a lug 29 which lug enters a groove 30 in the cocking sleeve. The cockin sleeve has a forwardly extending cam lip 26a which cooperates with the handle 4 to move the sleeve rearwardly. The cocking piece 26b has an elongated opening 31 in v which are lugs 32 adapted to interlock with the lugs 25 on the tiring pin bar whereby these two parts are secured together. 'The cocking sleeve 26 is provided with longitudinally extending grooves 33, 34 and a lug 35 positioned between said grooves said lug cooperating `with the sear nose. A safety 36 is mounted on the cocking sleeve and is 'provided with an arm 37 having cams which are adapted to engage the recesses 7 on the bolt to lock the bolt.' The main spring 39 is mounted in the bolt and disposed around the firing pin bar 18.

The bolt 1 moves backward and forward and revolves in the rifle receiver.A, carrying a cartridge'from the magazine or one laced by hand in front of it, and places same 1n the rile barrel or chamber. when shoved forward,y and supports the head when fired.' At the time that the cartrid .e is placed in the rifle chamber the-hook o the extractor catches in the cartridge groove, and holds the shell until it is ejected. The cocking piece 26b unites the parts of the bolt mechanism .by a simple tongue and groove arrangement. The cocking piecel .26b also engages and holds the firing pin bar 18 by a tongue and groove arrangement. The ar- 66 rangement permits of the bolt being easily taken apart by a slight turn of the cocking piece for cleaning, oiling, etc., without removing the main bolt easing 1 from the rifle receiver on the rifle. The safety 36 when turned to the lett permits the operation of the bolt and other parts for loading an'dfring, ejecting the shell, etc., or when turned to the right locks the bolt by engaging the' lugs as shown on horizontal arm 37 1n grooves 7. The safety when turned to the right also prevents the rifle from being fired w en the bolt is cocked. y The lugs 2 and 3 serve to lock and hold the Ibolt; in grooves in the bolt receiver when being fired, and ma be termed locking lugs. he lugs 16 of bolt bar head 9, hold the main spring 39 in place within the bolt by interlocking with grooves 17 in bolt casing, when cocking piece 26, cocking sleeve 26 and safetyl 36 are removed from' the bolt for cleaning, oiling, etc. Main sprng39. and firing pin bar 18 ltogether with striker pin can be removed from main bolt casing'for cleaning, oiling, etc., by a slight turn of bolt bar head 9 which disengages lugs 16 on same from inner grooves 17 in main bolt casmg. l

To open the bolt, raise the handle 4 until it comes in contact with the left side ofthe receiver A and pull directly to the rear. Raising th'e handle rotates the bolt and separates the locking lugs from their locking shoulders inthe receiver, with which they have been brought in close contact by. the power pressure. This rotation causes the cocking cam of the bolt to force the firing pin tothe rear, drawing the point of 'the striker into the bolt, rotation of the firing pin being prevented by the lug on the cocking piece projecting, through the sleeve, into its groove in the receiver. As the sleeve remains longitudinally stationary with reference to the bolt, this rearward motion of the firing pin, and consequently of the striker, will start compression of the main `spring 39, since the rear end of the latter bears against the front end of the barrel of the sleeve and its front end against the collar 19 of the firing/pin.

During the rotation of the bolt a'rear motion hasbeen imparted to it bythe usual extracting cam, coming in contact with the usual extracting cam of the receiver, so that the cartridge case will be started from the chamber.

The bolt is then drawn directly to the rear,

the parts being retained in position'by thev cocking piece nose remaining in the cocking notch and locked by the sleeve lock engaging its notch in the bolt.y f

The position then occupied by the arts iis shown in Fig. 4, andthe piece is'ready to re. 1 y To pull the trigger, the finger piece must be drawn to the rear until the contact with the receiver is transferred from its bar to A the usual e]ector, t rowing its point suddenly to the right in the lu slot. As the bolt moves fully to the rear, t e rear face of 4the cartridge case strikes against the usual ejector point and the case is ejected slightly upward and to the right, fromthe receiver.

It will be noted that in the system of the bolt mechanism the compression of the main spring, the settin of the cartridge in, and the starting of t e empty case from, the chamber are entirely done by the action of the cams.

The piece may be cocked either by raising the bolt handle until it strikes the left side of the receiver and then immediately turning it downA or by pulling the cocking piece directlyto the rear.

After the bolt has been ulled to the rear and the cartridge advance to loadin position the bolt is pushed forwardly to t e position shown in Fig. 3. Continued pressure in a forward direction on the handle advances the handle and bolt until the handle comes in contact with the receiver as shown in'Fig. 4.

What I claim is:

1. In a rifle bolt, the combination with a firing pin bar, and a striker secured to the forward end thereof, of a cocking sleeve movably mounted'on the bolt, and a cocking piece, secured to said firing pin bar an cocking sleeve.

2. In a riie bolt, the combination with a firing pin bar, and a striker secured thereto, of a cocking sleeve movably mounted on the bolt, and a cocking piece detachably locking the cocking sleeve and firing pin bar together.

3. In a rifle bolt, the combination with a firing in bar, and a striker, of a cocking piece bar, whereby the cocking piece, cocking sleeve and safety can be removed from the bolt without removing the bolt from the receiver, and wherebv main spring, firing pin bar, and irin pin can be removed from the bolt by a slight turn of the firing pin head.

4. In a rifle bolt, the combination with a Y bolt head, arms extending rearwardly therefrom, locking lugs on said head, of a ring pin, a fiat member extending forwardly therefrom and constructed to iit between said arms, and a comparatively short striker secured to said member. Y,

5. In a riie bolt, 'the combination with locking lugs on the forward end of the bolt,

etachably secured to said firing pin a bolt head secured in the forward end of -member extending forwar y from said bar and seated between said arms, a striker securedto sa1d member, a cocklng sleeve mov- 4ably mounted on the rear. end of the bolt,

a cocking piece interlocking with the ring pin bar and cocking sleeve, whereby the cocking sleeve is locked with the said bar.

THOMAS O. MUDD. yWitnesses: f

ALoNzo B. Gannn'rr, A. R. VIILARREAL. l

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