US1561011A - Firearm - Google Patents

Description

c. A. NELSON mama ' med uai-cn' 25, 1920 Nov. 10,1925. 1,5 1,011

4 Sheets-Sheet 1 INVENTOR M0.

BY ma. W

ATTORNEY.

1,561,011 C. A. NELSON uaamn Filed larch 25, 1920 (meta-Shae; 2

Nov. 10,1925- (Z6: 31 8, t WW5 c. A. NELSON Filed March 2.5-, 1920 4'Shee' cs-She et .5

Nov. 10 19 25.

:7 4a a Y ATTORNEYS.

when the action bar lug 14 has been withdrawn from its normal bolt-supporting position in the cam slot. The hammer is actuated by its plunger 24 and spring 25, when released by the trigger 26, and on reaching its forward position carries its presser member 23 into engagement with a part of the action bar lock 21, by which the latter is opened. This action bar lock 21 is pivoted at 19 and serves the usual function of obstructing the action bar so as to prevent untimely opening of the gun; its relation to the hammer and the construction of the latter form the subject of a co-pending application. The carrier 22 pivoted at 31 serves to carry cartridges delivered from the magazine 1 into the path of the retracted bolt. The general sequence of operations in uns of this class is briefly as follows:

tarting with the mechanism in the position of Fig. 2, the release of the hammer, by pulling the trigger, discharges the car tridge in the chamber, and more or less immediately opens the action bar lock so that the action handle may be moved rearwardly which movement withdraws shoulder from its notch and carries the bolt 12 to the rear to override and again cook the hammer 18. In this movement the empty shell is extracted and ejected through the lateral port shown in Fig. 1 1, and a fresh cartridge is released and delivered onto the carrier 22 as shown in Fig. 5. In the return movement of the bolt the carrier 22 with the cartridge thereon is raised to the dotted line position of Fig. 7 and the advancing bolt pushes the cartridge from the carrier into the chamber. Cartridges are supplied to the magazine through an entrance port in the bottom of the receiver just to the rear of the magazine.

According to my invention, I have provided the carrier 22 with an upwardly and rearwardly extending carrier latch mount- 7 ed in the bifurcated rear end of the carrier 22 and on the same pivot pin 31 as the car rier; the outside arm of this bifurcated end (Fig. 10) is provided in the rear of pin 31, with a transverse lug 32 projecting under latch 30 so that the depression of the latch 30 about its pivot raises the forward end of the carrier (Fig. 7), and the latch 30 can be raised about its pivot without moving of the carrier (Fig. A single spring 35- urges both the latch 80 and the carrier 22 toward their normal positions of Figs. 2 and 6; the straight portionofthis spring lies in a slot in the bottom of the receiver (or top of the trigger guard-Figs. 6 and 7 while the end 36 is placed under a forward projection from the latch and the'end 37 projects upwardly into a notch in the lug 32 of the carrier thus holding the carrier down and the latch against its lug 32. The upper face of carrier 22 is concaved (Figs. 7, 10 and 11) and .the bolt later described. The latch 80 is engaged and operated by the breech-bolt dur ing its retreat and forward movement and for this purpose is provided with a lateral projection 40, the underface of which is planilinear while its upper face is convex and constitutes a cam. The lower part of the side wall ll of the breech-bolt 12 is provided on its right hand side with an inwardly proecting longitudinally elongated lug 42 (Figs. 5, 6 and 13) so positioned that it engages under the latch projection 40, as the bolt 12 moves to the rear, and thereby raises the latch slightly. (Fig. 5) until just prior to the arrival of the bolt at its rearmost position it rides from under the latch allowing it to fall back to normal position against projection 32 of the carrier 22. On the forward movement of the bolt, the lug 42 again engages with the projection 10 but this time it rides on the upper cam surface thereof, depressing the latch 30 accordingly and, through the engagement of the latch with the projection 82, raising the forward end of the carrier (Fig. 7). The new cartridge thereon is thus brought into the path of the bolt in a position to be pushed home by it. As the bolt advances the lug 42 rides off the latch 30 and the carrier and latch are then returned to their normal positions by the spring 35 (Fig. 2). 1

Delivery of cartridges from the magazine 4 to the cartridge carrier is accomplished by the push of the usual follower and its spring 51 and is controlled by a cartridge cut-off 54c and cartridge stop 55; the former is a-spring plate or member mounted in the side wall of the receiver and the cartridge stop 55 is a part of the action bar retainer 56 shown in perspective in Fig. 8, and is carried by the bolt. Referring first to the cutoff 54-, it will be observed (Figs. 15 and 9) that it comprises a transverse enlargement 57 with a tail 58 projecting rearwardly therefrom, both of which parts are fitted snugly into connected cavities 59 and 60 in the left-hand wall of the receiver and thereby held against any movement in the plane of the wall, while the forward flexible end of the cut-off is free to move vertically in the space provided for it. A wall of the trigger guard more or less closes cavities 59 and 60 and retains the cutoff therein. The forward edge of the transversely curved nose 62 of head 61 directly engages the rearmost cartridge in the magazine; a forward projection 63 above the nose occupies an elongated slot 64; beside the rear end of the magazine to assist in holding the cut-off in place, whilr short enough to allow this movement even with the hammer cooked and notch 73 displaced to the rear of the projection, or may be so long as to require that the hammer be down (against the breech-bolt), as desired.

Besides the mechanism described, the drawings also disclose certain other related mechanism; 80 is a pivot or stud project ing inwardly from the left hand wall of the receiver to support the forward end of the bolt; the forward end of the bolt 12 engages with this stud 80 as it reaches its foremost position and fulcrums on it as it swings upwardly to engage the shoulder notch in the receiver. This matter is also disclosed and claimed in a co-pending application. The trigger 26 is pivoted at 81 in the trigger guard and adjacent its rear end is provided with an ear 82 against which the lower end of the trigger plunger 83 thrusts, such plunger being bifurcated to straddle the hammer plunger 24. The trigger plunger 83 is surrounded by the trigger spring 84: and a. safety 85, provided with a spring detent 86, is adapted to be moved into and out of blocking position at the upper end of the trigger plunger 83, as will be apparent from the drawing. It may be noted that the safety 85 acts as an indicator of the position of the hammer for when the hammer is against the breach-bolt the rear end of the trigger and its plunger 83 are elevated, and accordingly the safety 85 cannot be moved from its forward position which constitutes the indication.

Extractors 87 at opposite sides of the bolt withdraw exploded shells from the barrel, the left hand extractor riding in slot 88 in the receiver wall and the righthand extractor traversing the side ejection port and an interior slot to the rear of the same as the bolt moves rearwardly. As the bolt ap proaches its rearmost position a forward shoulder of ejector 89 lying in cavity 90 of the lefthand receiver wall projects in front of the bolt (Fig. 6) and ejects the cartridge or empty shell through the side port in the opposite receiver wall.

WVhile I have thus illustrated and described in some detail the best embodiment of my invention of which I am now aware, it will be understood that the same is illustrative and that my invention is not limited thereto except as definitely specified in the following claims:

Claims.

1. A take-down, repeating firearm comprising in combination, a breech-bolt, an action bar removably engaged with the breech-bolt, a;' cartridge magazine and a member serving the double function of looking the action bar to the breech-bolt and controlling the delivery of cartridges from the magazine.

2. A take-dowmrepeatmg firearm comprising a receiver, a breech bolt, firing means, an action bar provided with a lug to engage a slot in thebolt, a cartridge magazine, and a combined action bar retainer and cartridge stop consisting of a member carried by the breech-bolt and provided with one part to obstruct escape of the ac tion barlug from its slot and another part to control the delivery of cartridges from the magazine, said combined retainer and stop being controlled by the condition, of the firing means.

3. A repeating firearm comprising a receiver, a magazine adapted to feed cartridges rearwardlyinto the receiver through its forward end, the receiver being open at the bottom to allow the charge and discharge of the magazine therethrough, a breech-bolt, a carrier pivoted in the receiver to the rear of said opening and normally closing the same, a cartridge cutoff to hold the cartridges in the magazine when the breech-bolt is open, and a movable cartridge stop on and depending from the breech-bolt, the said carrier being adapted to engage the cartridge stop to displace the same out of cartridge stopping position when the carrier is moved inwardly and the breech-bolt is closed.

A. A repeating firearm comprising a receiver, a magazine adapted to feed cartridgesrea-rwardly into the forward end of the receiver, a carrier in the receiver, an action bar sliding longitudinally for re-loading, a breech-bolt operated thereby, a cartridge stop on the forward end of the breech bolt for holding the-cartridges in the magazine and against which the cartridges abut as they are fed from the magazine and whereby they are seated on the carrier only as the breech-bolt retreats, and a cartridge cut off, said action bar depressing said cut- *Ofi from its operative position when the ity in the receiver wall, the walls of the cavity thereby restraining the movement of said part of the cut-off so that the latter bends as it operates to engage and release the cartridges.

6. A repeating firearm comprising a re ceiver, a magazine adapted to feed cartridges rearwardly into the receiver, a cartridge cutoff, said cut-off comprising a resilient men1- ber seated in part in a closely-enclosing cavity in the receiver wall, the Walls of the carbeing arranged to pass over the other as the breech closure retreats and to pass under it as the closure advances, to elevate the carrier.

19. In a repeating firearm in which the cartridges are fed rearwardly from the magazine into the receiver, the combination of a longitudinallymovable breech-bolt, a longitudinally sliding action bar for opening and closing the bolt, a cartridge cut-oft to prevent the feeding of cartridges, said cut-off being controlled by one of said longitudinally movable members to release the cartridges when the breech-bolt is closed, a cartridge carrier, and a cartridge stop on and depending from the breech-bolt, said carrier when raised manually'engaging and displacing the cartridge stop from cart-ridge stopping position.

'20. In a repeating firearm in which the cartridges. 7 are fed rearwardly from the magazine into the receiver, the combination of a longitudinally movable breech-bolt, a longitudinally sliding action bar for opening and closing the bolt, a cartridge cut-off to prevent the feeding of cartridges fromthe magazine, said action bar depressing the cutoff to release the cartridges in the magazine when the breech-bolt is closed, an entrance part for the cartridges, a pivoted cartridge carrier, and a cartridge stop onand depending from the breech-bolt and enga-geable by the carrier to release the cartridges and permittheir discharge from the firearm.

21. In a repeating firearm in which the cartridges are fed rearwardly from the magazin into the receiver, the combination of a longitudinally movable breech bolt, a longitudinally sliding action bar for opening and closing the bolt, a cartridge cut-0E to prevent the feeding of cartridges, .said cut-off being controlled by one of said longitudinally movable members to release the cartridges when the breech-bolt is closed, a cartridge entrance port, a cartridge carrier, and a double function member to control the withdrawal of the action bar and to stop and control the feeding of cartridges, said carrier being operable manually to displace said double function member from cartridge stopping position to permit the discharge of said cartridges through said entrance port.

22. In a repeating firearm, the combination of longitudinally movable breech opening and closing mechanism, and a pivoted cartridge carrier, said parts having cooperating carrier operating members one of which has a cammed generally-horizontal surface and one of which is movable vertically with respect to the part which carries it, said cammed surface being engaged by the other of said members when the breech mechanism is moving in one longitudinal direction to elevate the carrier, the generallyhorizontalsurface opposite said cammed surface being engaged by said other of said members when the breech mechanism is moving in the opposite longitudinal direction.

23. In a repeating firearm, the combination of a sliding breech-bolt, an action bar actuating the same, a pivoted cartridge carrier which is depressed when the breech-bolt is closed, a laterally projecting member on the carrier, one generally-horizontal surface of which is cammed, and a laterally projecting member on the breeclrbolt, one of said laterally projecting members being movable in a vertical plane with respect to the part which carries it, and the member on the breech-bolt passing along the generally-horizontal surface of the member on the carrier which is opposite said cammed surface, when the breech-bolt is moved to the rear and traveling on tlie said cammed surface when the breech-bolt is moved forward, thereby elevating the carrier.

24. In a repeating firearm, the combination of a compound movement breech-bolt, a sliding action bar for actuating the same, a pivoted carrier which is depressed when the breech-bolt is closed, a laterally projecting member at the rear of the breech-bolt, and a cooperating lateral projection on the carrier at the rear of its pivot, the upper face of the last mentioned member being cammed and one of said members being movable vertically, by the engagement of the two, with respect to the part which carries it, so that the member on the breech-bolt passes underneath the member on the carrier when the breech-bolt moves to the rear and passes over said cammed face when the breech-bolt moves forward, thereby elevating the carrier.

25. In a repeating firearm, a cartridge cutofi comprising a resilient bar-like member having an enlargement adjacent one end thereof which is fitted into a cavity snugly confining the bar adjacent said enlargement and holding the cut-off in lace, the cut-off being arranged to engage the cartridges adjacent its opposite end which is movable into and out of cartridge engaging position, and means for moving said cut-oft to one position against its resiliency.

26. In a repeating firearm in which the cartridges are fed rearwardly from the magazine, the combination of the receiver, reloading mechanism therein, and a resilient cut-off comprising a resilient bar-like member arranged toengage the cartridges adjae cent its forward end and having an enlargement near its rear end, said enlargement being seated in a snugly confining cavity in the receiver which thereby retains said rear end of the cut-off in position while the forward end of the cut-off moves to and from its cartridge engaging and cartridge releasing positions,said reloading mechanism actuating the forward end of the cut-off to one offsaid, positions and the resiliencylof" the ent-01f returning'i't to the other of said positions.

27; In a repeating vfirearm in Which the cartridges are fed rearwardly from the n1agazine,:the combination of the receiver, a longitudinally movable breech-bolt therein, an action bar for moving saidbolt, aresili-g ent cartridge cuteofl the rear end of Whichis 110,

fitted snugly into a cavity in the sidewall guard extending over said cavity to prevent Y the escape of the cut-off from the cavity, the.

forward end ofithe cut-off being movable into and out ofcartridge engaging position andthe action bar engaging said 'forward end of the cut-oil? and being recessed so that thejaction bar moves said forward end [of the cut-off to one of its positions against itsresiliency and the resiliency of the" cut- ,oflf returns, thei forward end of the cut-off" when said recess is opposite the same. 1

28, In a takedown repeatingfirearm; the

of the receiver, and ;-a removable v trigger combination of a receiver, a longitudinally movable breech-bolttherein, a sliding action I bar having a projection extending into a;

slot in one side of thebreech-boltand fromg I Which the projection is Withdrawn to take down the gun, a magazine feeding cartridges rearwardly lntothe rece1ver,-and a comb ned .30; action bar-lock and cartridgestop com'prising'a single member having a portion 1pend 1 ent lt'rom' the centerline of the :breech-bolt1 to control the feeding of'the cartridges from" the magazine and a'portion arranged at the slot side of the bolt to obstruct 'the escape-' of the action bar fromilthe breech-boltslot; i

each of said portions of the singleinember.

being independently operable so thatthe re-l r 1 lease of the cartridges. andthe release of the action bar are independently control- 1 labl.

In testimony Wherbf, I h ve signedfthis specification.

' [CHARLES NELSON;

Images