US340726A

US340726A - nordenfelt

Info

Publication number: US340726A
Authority: US
Publication date: 1886-04-27
Anticipated expiration: 1903-04-27

Description

3m t 6 e ,h s W 6 e h s 5 m L B F N E D R N T M d 0 M 0 m BREEOH LOADING FIRE ARM.

8 m w 6/- m .N P m @Ea 71 o N M4 ms NQRRls FETERS cu, wow-nun" WASHINGTON, n. c

5 Sheets-Sheet 4.

ed Apr. '27, 1886.

(No Model-n T. NORDENFELT.

BRBE'GH LOADING FIRE ARM. No. 340,726. Pat

(No Model.) 5 Sheets-Sheet 5.

T. NORDENPELT.

BRBEGH LOADING FIRE ARM.

No. 340,726. Patented Apr. 27, 1886.

' a subject of the King of Sweden, residing at 53 positions they occupy after the rifle or gun' cam-sleeve,'and Fig. 17 is an end elevation of UNITED STATES PATENT OFFICE.

'IHORSTE\ NORDENFELT, 53 PARLIAMENT STREET, VESTMINSTER,

ENGLAND.

BREECH-LOADING FIRE-ARM.

SPECIFICATION forming part of Letters Patent No. 340,726, dated April 27,1886.

Application filed January 2'7, 1885.

T0 aZZ whom it may concern.-

Beit known that I, THORs'rEN-NQRDENFELT,

Parliament Street, in the city of Westminster, England, civil engineer, have invented certain new and useful Improvements in Rifles and other Guns, of which the following isaspecification The object oi this invention isimprovements in rifles and other guns in which the breech is opened and closed by means of a sliding bolt. Such guns are specially adapted to receive a magazine from which cartridges are supplied to the barrel.

In the annexed drawings, Figure 1 is a vertical and longitudinal section oi the action of a rifle or gun constructed in accordance with the invention. The hammer is drawn back and retained in the fultcocked position ready for firing. Fig. 1 is a similar section, but shows the hammer and other parts in the has been fired. Fig. is a rear elevation of the same. Fig. 3 is a vertical and longitudinal section of the body only. Fig. 3 isa. vertical and longitudinal section of the body, and shows the bolt fully drawn back with the extractor. The hammer is in its position of-fullcock. Fig. at is a plan of Fig. 3. Fig.- 5 is a transverse section of the body on the line A-B in Fig. 4; Fig. 6 is atransverse section on the line 0 D in Fig. 4. Figs. 7 and 8 show the extractor in elevation and plan. Fig. 9 is a plan of the bolt in the position it occupies during withdrawal. Fig. 9 is an elevation of the bolt,and shows the four lugs thereof. Fig. 10 is an end elevation of the bolt. Fig. 11 is a transverse section of the bolt 011 the line EF, Fig.'9, and shows also the cam-sleeve within the bolt. Figs. 12 and 13 show the pin by which the bolt and sleeve are held together. Figs. l4, l5, and 16 are side elevations of the the same. Fig. 18 is the half-cock bolt. Fig. 19 is a rear elevation of the hammer. Fig. 20 is' an under side view of the same. Fig. 2L is a side elevation. Fig. 22 isa plan. Fig. 23 is a front elevation, and Fig. 24 alongitudinal section, of the fore part of thehammer. Figs.

25 and 26 show an elevation and plan of a por- Serial No. 154,120. (No model.)

tion of the magazine. Fig. 27 is a side ,view of the magazine, the bar being drawn back to the position for a cartridge to pass out into the chamber of thebody. Fig. .28 is a section of the magazine fixed in its position on the body.

The principal parts of the action of the gun are:

1. The body.---'lhis part (marked A) is screw ed onjn rear of the barrel and bored from end to end with a cylindrical passage, forming an enlarged continuation of the bore of the gun. It is also slotted or cutaway at the top,so that it is open down to the bore. The sides of the groove so formed receive the extractor and guide it; or, asindicated by dotted lines in Fig. 5, the body may remain closed at the top at the rear end, the extractor being then made lower to pass underneath within the =incl0sed part. The body is also grooved at the bottom inside to form a guide, and at the sides inside to re ceive lugs formed on the bolt to lock it and take the force of the explosion. Asocket, a, is formed on its side to receive the magazine which in its main features forms no part of this invention, but will be referred to hereinafter. I

2. The boZt.This part (marked B) is a hollow cylinder fitting the cylindrical passage in the body and capableof partially turning and sliding within it. terior,which engage with the recesses formed within-the body. The handle fixed upon the rear end of the bolt is marked 1).

3. The 7ii"ing-pin..-This part (marked F) is contained Within the bolt. Its stem is surrounded by a coiled spring, S, which abuts at one end upon the head of the firing-pin, and at the other upon the cam-sleeve.

4. The cam-sleeve, (marked -K.)-This is a short cylinder fitted within the bolt, andthere secured by means hereinafter described. It is cut away in rear so as to form acam-like incline.

pin passes through the The bolt has lugs on its ex- IOC the stem of the firing-pin by means hereinaf ter described. The rear end of the hammer, when the gun is closed, enters the end of the body where at a there is a groove to receive it, so that when the bolt is turned for locking and unlocking the hammer is held from turn--- ing with the bolt. \Vhile unlocking the in eline on the cam-sleeve drives back the hammer, compressing the coiled spring until at the top of the incline the hammer clicks into a small notch, h, in the cam-sleeve, and is retained, while by the rearward movement of the bolt the breech is opened. \Vhen the bolt is again pushed forward to close the breech and turned to lock it, the hammer is upon a stationary pin, 1, which supports it at an intermediate point, so that a stronger pressure on. the trigger is requisite entirely to withdraw the scar and release the hammer for firing.

7. The extractor.-This piece (marked E) fits the slot in the top of the body, in which it slides like the lid of a box, being retained by guide-grooves with overlapping lips in the rear end of the body. Vhen the bolt is turned in unlocking, one of the lugs at its hinder end enters a recess, e, in the under side of the extractor, and engages with it so thatthe extractor is drawn back with the bolt. The extractor has a projection, c", on its head, which, as the gun is opened and closed, strikes corresponding projections on a sliding bar which operates the magazine.

8. The locking bolt or half-cock appZ-e'ancc.- This part (marked L) is a transverse axis immediately beneath the trigger-spring. It is notched on one side and has a thumb-piece at one end. In one position the axis supports the trigger-spring so that it cannot yield to the pull upon the trigger, but when turned partly round the notch is brought to a position, as seen in Fig. 1, such as to admit of the spring yielding. The further end'of the axis of this lockingbolt is doubled upon itself where it enters the hole in the body, which serves as the hearing. The hole is enlarged internally, and the axis when thrust in opens out, so that while turning freely it cannot be withdrawn except by the application of considerable force. The bolt is formed with four lugs, as seen in Figs. 9 and 9. Two of these (marked b and b are on the upper side of the bolt, and there are two others-11 and b"-on the under side. Of these lugs, three-namely, b", b, and b"' have a bearing in the curved slots formed in the sides of the body and serve to take up the recoil. Their hearing-surfaces are'at right-angles to the axis of the bolt. The top rear lug, b also serves to fix the extractor to the bolt, the flange upon it entering the recess 6 and keep ing the rear end of the extractor firmly down when the bolt is withdrawn. The front faces of the lugs are cut to a screw-pitch, and these bearing against corresponding inclines in the curved slots in the body extract the cartridgecase partially when the bolt is' being turned for unlocking. The rear .face, a, of the body is cut to the same pitch, and this acts as a stop when the bolt is being pushed in. The lower front stud, I), is used as a guide only and not to lock the boltin the body. It traverses along the groove 01 in the lower part of the body as the bolt is drawn back.

The method of connecting the hammer with the stem of the firing-pin is as follows: The

- stem f has a groove around it at a short distance from the end, and the hammer has an oblong hole, it, formed in it to receive'the end of the stem. The hammer is raised after the stem has been inserted, and then a lip, it, formed at the fore part of the oblong hole, enters the groove in the stem. When the bolt is in its working'position in the gun, the hammer cannot escape'from the tail of the firingpln.

The parts are brought together in the following manner: The firing-pin F, after hav:

through the cam-sleeve K and its end inserted in the hammer H. The hammer is then brought up concentric with the sleeve. By this means the firing-pin is fixed to the hammer. It is now pushed into the bolt B. The cam-sleeve enters the bolt, and a groove and projection or feather k guide it to its place. It is then held in position by inserting thepin shown by Figs. 12 and 13. The pin (big the spring S placed upon it, ispassed is in the lug b*, which engages with the exj tractor. sition by the said flanges passing into grooves in. the lug b when the pin is turned one-quarter round. 7;" in the sleeve, acting upon the cam 71 on the hammer, pushes back the firing-pin F and compresses the spring S, the hammer being prevented from turning by its tail-piece running in the'slot a in the body. held in this position while the bolt is being withdrawn by the point of cam entering the small recess 7. in the sleeve. is'maintained dnringthe return of the bolt and until the bolt is within one-eighth of an It has two flanges, and is held in po-- Upon unlocking the gun thecanr This posit-ion The hammer is,

inch from home, when the bolt is turned for locking the lugs, bearing against the quicklypitched slots a, drive the bolt completely home, and the hammer remains held by the trigger M.- The bolt is stopped at the rear by the lugs on the extractor coming in contact with the faces on the body. The extractor, as already stated, is furnished with a lug, e, for ,the pur QSG of engaging projections n and a--o1rt 1e feed-bar N of the magazine; This baris attached to the side of the magazine, upon which it slides, and it is connected with the magazineslide O at 0. The magazine may be such as is described in my Patent single loader. W'hen, however, the gun is to be used as a magazine-gun, and the magazine is supplied with cartridges, they he one over the other, as indicatedin Fig. 28, and when the breech is opened and the part 6 comes against the part a and moves the cradle O,the nndermost cartridge is moved to such a position that it is able to escape into the chamber of the body,and it may be thrust out by fingers, with which the magazine may be provided,

as described in my said former patent, but' which it'is unnecessary to describe in detail, as the structure of the magazine constitute no part of the present invention. .VVhen in closing the breech the part c strikes on the part a and the cradle is moved back, another cartridge descends into it, ready to be delivered into the gun, when the breech is next opened.

I Having now particularly described and ascertained the nature of my said invention, and in what manner thesame is to-be performed, I declare that what 1 claim is 1. The combination of the body, the bolt sliding and turningin the body,the cam-sleeve within the bolt, the firing-pin passing through the cam-sleeve, and the hammer attached to the'firing pin and having an incline operated against by the cam-sleeve when the bolt is turned, substantially as and for the purpose set forth. I

2. The combination, with the body and the hammer, of the combined trigger, spring, and sear, the spring being supported by connections at its front and rear ends with the body, and the trigger and sear arranged between the front and rear supporting-connections, substantially as and for the purpose set forth.

3. The combination of the body, the'sliding hammer, and trigger-spring having the trig-- ger and the scar and supported by connection at its opposite ends with the body, whereby the hammer is engaged with and released by the sear by the flexure of the spring between its ends, substantially as set forth.

4. The combination of the body, the trigger-spring provided'with the sear, and having at its opposite ends supporting connection with the body, the sliding hammer, the trigger, and the intermediate support for the trigger-spring, substantially as and for the purpose set forth.

5. The combination of the body, the triggerspring having supporting connection at its opposite ends with the body, and operating by flexure between its ends, and the notched turning locking-bolt L,for limiting the fiexure of the trigger-spring and constituting a halfcock appliance, substantially as set forth.

G. The combination of the body, the sliding hammer having the oblong hole with the lip h", the turning and sliding bolt, and the firingpin, the rear end of which enters the hole in the hammer, and is provided with a groove engaging the lip thereof, substantially as and for the purpose set forth. Y

7. The combination of the body slotted at top, the extractor provided with the recess e, and having guidewayconnection with the body, and the turning and sliding bolt having the flanged lug I), which engages with the recess in the extractor, substantially as and for the purpose set forth.

8. The combination of the body, the sliding and turning-bolt having lug-and-groove eonnection with the body, and provided with the lug b the cam-sleeve having the groove-andfeather connection with the bolt, and. the doubly-fianged pin engaging the cam-sleeve with the lug Z) of the bolt, substantially as and for the purpose setforth.

9. The combination ofthe body, the sliding and turning bolt, themaga-zine attached to the body, the magazine slide 0, the feed-bar N, connected with said slide, the fixed and pivoted projections n a at the opposite ends of the feed-bar, and the sliding extractor actu-' ated by the bolt, and provided with the lug 6 for operatingthe feed-bar by engaging its projections, substantially as set forth.

THORSTEN NORDENFEL'I. Vi t nesses:

J. WATT, JOHN DEAN,

Built of 17 Gracechm'ch 81., London.