US2104581A

US2104581A - Repeating firearm

Info

Publication number: US2104581A
Application number: US726675A
Authority: US
Inventors: Val A Browning
Original assignee: J M AND M S BROWNING Co
Current assignee: J M AND M S BROWNING Co
Priority date: 1933-05-03
Filing date: 1934-05-21
Publication date: 1938-01-04
Anticipated expiration: 1955-01-04

Description

Jan. 4, 1938. v. AIBROWNING REPEATING FIREARM Original Filed May 5, 1955 VaZjLBrow'niny iii Patented Jan. 4, 1938 STATEE REPEATING FIREARM Val A. Browning, Liege, Belgium, assignor to J. M. and M. S. Browning Company, Ogden, Utah, a corporation of Utah Original application May 3, 1933, Serial No. 669,-

184. Divided and this application May 21, 1934, Serial No. 726,675

3 Claims. (Cl. 4225) This invention relates to improvements in firearms, and has particular adaptation in automatic shotguns wherein the barrel and breech mechanism are locked together and recoil in unison upon the explosion of a shell; the fired shell is ejected through the side of the receiver and a cartridge is automatically transferred from the magazine below the barrel to the barrel extension; and is a division of my application Ser. No. 669,184., filed May 3, 1933 to which reference may be had for details not incorporated as a part of this divisional application.

The principal object of the invention disclosed in this division resides in the provision of a novel ejector mechanism which is efiicient, durable, easily installed and which, by reason of a frictional relation with its support, readily accommodates itself to cartridges or shells of different lengths.

In the accompanying drawing, wherein similar reference numerals have been used to indicate like parts throughout, I have illustrated a suitable mechanical embodiment of the idea of the invention. The drawing, however, is to be taken for y the purpose of illustration only and not as limiting the invention the scope of which is to be measured entirely by the scope of the appended claims.

In the drawing,

Fig. 1 is an elevational view of a fragmentary portion of a firearm, a portion thereof being broken away to illustrate the application thereto of an extractor and ejector constructed according to the idea of this invention;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1;

Fig. 3 is an elevational view of a fragmentary portion of the barrel extension illustratedin Fig. 1 showing the slot provided therein for my improved ejector;

Fig. 4 is a side elevational View of an ejector constructed according to the idea of this invention; and

Fig. 5 is an edge View of the ejector illustrated in Fig. 4:.

Referring to the drawing in detail, the numeral Ill generally indicates the receiver of an automatic firearm such as forms the subject matter of my application Ser. No. 669,184 referred to above. This receiver I0 is provided with a cover l2 and has secured thereto a buttstock M. The gun is also provided with a barrel 15 having an extension l8 reciprocally mounted in the receiver ID. A breech bolt 20 cooperates with the barrel extension is to move the cartridges into and to retain them in the firing chamber. This breech bolt is releasably secured to the barrel extension so that after the gun is fired, the barrel and breech bolt recoil together to their full extent; and at the end of the recoil the breech bolt is released from the barrel extension to permit the barrel to advance and allow ejection of the shell through a suitable aperture or opening 23 provided in the cover [2, as explained in my applica tion referred to above. The breech bolt is provided with an extractor 25, particularly illustrated and described in the original application referred to above, of which this is a division, for moving the fired cartridge out of the firing chamber and into a position where it may be ejected through the opening provided in the receiver cover.

In order to eject the fired cartridge through this opening 23, I have provided the novel ejecting mechanism forming the subject matter of this invention. This ejector, as particularly illusa trated in Figs. 4 and 5, comprises a strip of metal having a body portion 28 provided along its upper and lower edges with ribs 29 adapted to slidably engage in channels cut in the upper and lower walls of a recess or groove 38 formed in the inner surface of the side wall of the barrel extension B3. The groove 35) in the barrel extension is extended forwardly in somewhat narrowed form, and this narrowed portion of the groove receives a forwardly extending tongue or tang 28 of the r ejector. The wall of the extension in the forward end of the groove 38 has a short groove 3! therein which receives a stud 32 extending outwardly from the forward end of the spring tang 28. This tang, as shown in Fig. 5, is curved outwardly so that when the ejector is inserted into the groove 39, this tang will resiliently bear against and frictionally engage the wall of the groove and thus provide a drag on the ejector. The ejector has, at its rear end, an inwardly projecting ejecting shoulder 33 against which the rim of the shell, as it is withdrawn from the shell chamber by the extractor 25, is adapted to engage. When the ejector is in its foremost position with respect to the barrel extension, the rear end of the ejector projects only slightly beyond the rear end of the barrel extension. From Fig. 2 it will be observed that the inner face 34 of the ejector, adjacent the rear end of the latter, is curved or inclined inwardly, and this face is beneath a horizontal plane passing through the axis of the barrel so that there is a ledge, so to speak, lying beneath the rim of the shell at the side of the shell.

With this arrangement, it will be observed that the ejector may be very economically made and i easily assembled and, when assembled, it will not be detached from place under the shocks to which it is subjected. To assemble the ejector in the groove of the barrel extension, it is merely necessary to align the forward end of the ejector with the groove 38 and then force the ejector forwardly. When the stud 32 comes opposite the slot 3 l, the tang will flex outwardly and move the stud into the slot. The ends of the slot constitute stops for limiting the extent of movement of the ejector. When the breach bolt is manually withdrawn from operating position, the usual extractor 25 on the forward right-hand side of the breech bolt will engage in front of the rim of the shell and draw the shell rearwardly until the other side of the rim engages the ejecting shoulder 33 whereupon the forward end of the shell, having cleared the breech, will be swung to the right and the shell will be ejected. When the gun is fired, the barrel and breech bolt recoil together and the cartridge is engaged by the extractor; then the barrel moves forwardly. During this forward movement the ejector shoulder will strike the left-hand side of the shell and, as the extractor 25 is engaging the right-hand edge, the shell will be ejected. In either event, it is of advantage to have the sliding ejector under frictional drag in order to take care of shells of different lengths in the most expeditious manner and to avoid the possibility of jams. For example, if an unfired shell is being manually withdrawn from the firing chamber, this action is naturally slower than would be the case if the gun is fired, and the shell is relatively shorter than a fired shell would be, due to the crimp at the forward end of the shell. In this case, the rim of the shell will engage the ejecting shoulder with the ejector in its foremost position so that the shell is removed as quickly as possible leaving ample time for the next shell to be delivered from the magazine without jamming. If the shell being extracted is a longer one, as would be the case if the same had been fired, the rim will engage the ejecting shoulder and the ejector will be caused to move rearwardly "a sufficient distance to permit the forward end of the shell to clear the breech. It will be understood that, when the barrel is moved to full retracted position, the ejector will engage the rear end of the receiver or an abutment 35 secured thereto and be moved to its forward position, shown in Fig, 1. As previously stated, the inner face of the ejector, adjacent the ejecting shoulder, is directed downwardly and inwardly below the horizontal plane of the barrel, as particularly ilustrated in Fig. 2, this arrangement being of advantage in that the rim of the shell may rest on this surface, being held thereagainst by the extractor so that the rim of the shell will not drop down from engagement with the ejecting shoulder.

While I have illustrated and described a particular mechanical embodiment of the idea of my invention, it is to be understood that the invention is not limited to the construction as specifically illustrated and described, and that such changes in the size, shape, and arrangement of parts may be resorted to as come within the scope of the appended claims.

Having now described my invention so that others skilled in the art may clearly understand the same, what I desire to secure by Letters Patent is as follows:

I claim as my invention:

1. In a firearm of the character described, a barrel having a barrel extension mounted for reciprocation, a breech bolt cooperating therewith,

an extractor on said breech bolt, and an ejector on said barrel extension adapted to cooperate with said extractor to eject a cartridge from the barrel extension, said ejector having limited lengthwise movement with respect to said barrel extension, a flexible portion on the ejector frictionally engaged with said barrel extension to retard said lengthwise movement, the frictional drag between said barrel extension and ejector being such that the ejector will engage and eject a cartridge before the ejector is moved to its rearmost position with respect'to the barrel extension and as soon as the forward end of the cartridge clears the firing chamber.

2. In a firearm of the character described, a barrel having a barrel extension mounted for reciprocation, a breech bolt cooperating therewith, an extractor on said breech bolt, and an ejector on said barrel extension adapted to cooperate with said extractor to eject a cartridge from the barrel extension, said ejector comprising a curved strip of metal having a stud at one end and an ejecting shoulder at the other end, said barrel extension having a groove on its inner face in which said ejector is mounted for longitudinal movement, said barrel extension having a longitudinally extending slot for accommodating said stud, and the ends of said slot constituting means for limiting movement of said ejector,

3. In a firearm of the character described, a barrel having a rearward extension provided with a side wall, said wall having a depression therein, a breech bolt, an extractor supported by the breech bolt and located opposite said side wall, an ejector supported by the side Wall and arranged for longitudinal sliding movement relative thereto, said ejector having a flexible tang frictionally engageable with said wall, a laterally projecting lug on the tang engageable within said depression and limiting the extent of ejector movement, said ejector having a projecting portion engageable with the rim of a cartridge as it is withdrawn from the firing chamber, and a curved inwardly and downwardly extending face on the ejector beneath said projecting portion which engages and supports the cartridge rim .during its Withdrawal from the firing chamber.

VAL A. BROWNING.