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Publication numberUS580679 A
Publication typeGrant
Publication dateApr 13, 1897
Filing dateApr 22, 1885
Publication numberUS 580679 A, US 580679A, US-A-580679, US580679 A, US580679A
InventorsWilliam Ii
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 580679 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.) v Q 4 3 Sheets-Sheet 1.



Patented Apr 13, 1897.

I immirul jiflawn izi dfd hgom i i) '3 She etsS het 2 I W. H. DAVENPORT.

t MAGAZINE GUN. "No. 580,679. Patented Apr, 13, 1897.'

lnveniorz .Ddili Hw N ,N 8. M NnK Witness 3 Sheets-Sheet; 3.

(No Model.)



No. 580,679. 'PatentedAph 13, 1897.

wk VIII/41127 I Fir VVZiZes s e 8 r barrel.

s to the accompanying drawings, and to letters Jan dramas Fries.

M'AGAZlNE-GUE L SPECIFICATION forming part of Letters Patent No. 589,679, dated April 13, 1897.

Application filed April 22, 1895.

T0 aZZ whom it NHL/j 0071110771.-

Be'it'k'nown that 1, WILLIAM H. DAVEN- PORT, a citizen of the United States, residing at Norwich, in the county of New London and State of Connecticut, have invented certain new and useful lmprovementsin Mag-azim- Firearms; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had of .reference marked thereon part of this specification.

My invent-ion relates to magazine guns or firearms-that is to say, the class of breechloading firearms in which cartridges are fed mechanically from a magazine into the gunwhich form a The -object I .have in view is-to produce a magazine firearm or rifle which will be comparatively light, eflicient, strong, and capable of being easily and quickly operated and at the same time possessing great magazine capacity for the an'nnunition, the weight of the piece when fully charged being less than that of magazine-guns as usually constructed.

'Another object of the invention is to produce or provide a-novel device for intermitiingly feeding the cartridges from the magazine into the gun-barrel, the arrangement being such thata partial revolution of the magazine must always take place before the cartridge can be delivered or ejected therefrom intoa carrier, which latter transfers it to the gun-barrel.

My invention consists in the novel construction and combination of parts and devices, aswill be more particularly hereinafter set forth, and pointed out in the claims.

By means of my improvement the act of opening and closing the gun through the medium of the usual operating or guard lever automatically ejects the empty shell from the barrel, cooks the hammer, elevates the cartridge-carrier and places a new cartridge in position in the barrel, rotates the magazine, retracts the carrier to its normal position, and delivers the next succeeding cartridge from the magazine into the carrier prepara- Serial No. 546,652. ea model.)

' tory to being introduced into the barrel after the next discharge.

In the accompanying three sheets of drawings, Figure 1, Sheet 1, is a longitudinal central section, in partial elevation, showing the essential features of my improved magazinefirearm, the several parts being in the normal position. Fig. 2 is a similar view, the gun being open, the relation of the parts being such that a cartridge stands in position ready to be introduced into the barrel during the act of closing the gun. Fig. 3is a transverse section taken on line 1 1 of Fig. 2. Fig. 4 is a similar section taken on line 2 2 of Fig. 2. Fig. '5 is a cross-section taken on line 5 5 of Fig. 2. Fig. 6, Sheet 2, is a longitudinal central-section, enlarged, taken through the frame and rear end of the magazine, the relation of the parts corresponding with Fig. 1. d

Fig. 7 is a similar section of the same, the

breech-block, however, being retracted and in the actof ejecting the empty shell from the gun. Fig. 8, Sheet 3, is a horizontal section, enlarged, taken substantially on line a: at, Fig. 2, the magazine being in elevation and showing the relation of the filling or loading cover thereto; Fig. 9 is an enlarged section corresponding to Fig. 2, showing the carrierblock, &c., at the instant of introducing a cartridge into the gun-barrel, Fig. 10 is a transverse section, enlarged, taken on line 3 3 of Fig. 1, the breech-block being omitted. Fig. 11 is a similar section of Fig. 1. Fig. 12 is a side View of the carrier-block detached from the gun. Fig. 13 is a rear end view of it.- Fig. 14 is a front view. Fig. 1-5 is an enlarged horizontal section taken substantially on line 6 6 of Fig. 3; and Fig. 16 is a view similar to Fig. 15, showing the magazine turned-one-fifth of a rev0- lution, the cartridge being fed into the carrier.

1 would state that the form and arrangement of the gun-barrel b and breech-stock a are or maybe made substantially as common to guns or firearms of the breech-loading So, also, are the pivoted hammer h, trigger Land mainspring frame f. The said frame has the stock a secured to its rearend and the barrel 1) to its front end in any suitable manner. As drawn,

5, all mounted in the taken on line 4 4 1 lOO f suming the parts to be in the normal position,

magazine B about to be described.

the rear end Z) of the gun-barrel. is reduced in diameter and is screwed into the frame f.

To the under side of the rear portion of the barrel 1) and parallel therewith is secured a casing 01, of wood, the same having a CllttlTlreservoir B is revoluble and is composed of a series of circularly-arranged parallel tu besm, secured together. five tubes closed at the front end and open at the opposite end. secured to a central axle or spindle 0, the latter having at its rear end a five toothed v ratchet-wheel 11 secured thereto, through which motion is imparted to the magazine. Each tube-chamber is adapted to receive a number of cartridges .2. Theseare placed end to end and are'maintained in endwiseyielding contact through the medium of a guided follower my and spring m movably mounted in the forward portion of the tube.

The magazine may be rotated independently of the operating mechanism by means of a short handle (not shown) adapted to be removably inserted into holes (1 formed in the periphery of the said flange d At the rear end of the magazine is located in the frame a fixed plate or disk 1), thc same practically closing the corresponding ends of the several tubes m',-the said spindle 0 extending centrally therethrongh. The disk is prevented from turning and is kept in place by a screwfhtapped into the frame. (See Fig. 4.) The plate is provided with an elongated segmental opening p, through which the cartridges are both fed into and from the maga-' zine. This opening is formed. in the upper portion of the plate and extends circularly from the upper tube to the next succeeding tube and is adapted to communicate with both the said tubes. (See Figs. 3, 4, 15,and 16.) The rear portion 19 of said opening 1), considered with respect to the direction of rotatation of the magazine, is adapted to pass cartridges therethrough freely, as in loading or charging the magazine,wh'ile theforward portion- 5 through which the cartridges are fed from the magazine to the carrier-block, is reduced in diameter that is to say, the hole 19 is counterbored from the back to freely receive the enlarged or r'ini portion'of a 'car tridge, but will not permitit to pass directly through the plate. Thus it will be seen, as;

(-sho'wn'in Fig, 16,) that the next cartridge to be fedfrom the magazine to the carrier will [be the rearmost one in the tube opposite the rear hole 19 so that upon rotating the magazine one-fifth of a revolution saidtube will As drawn, it consists of The magazine is rigidly be advanced and brought opposite the forward hole 19 Now during this movement the end of the cartridge will slide along the opening 13", and at the same time, by means transferred from the hole p portion of the intercommunicating hole 19 ready'to' be delivered into the carrier upon withdrawing the stop or spring-cover u. See Fig.15.)

The frame f is provided with a vertical opening or chamber formed at the rear end of the barrel in whichthe carrier-block, soon to be described, is movablymounted. Said opening is closed by a longitudinally-sliding cover at, its outer surface forming a continuation of the frame itself, as clearly shown. The frame is further provided with a side opening, arranged at substantially right angles with the firstnamed opening, which I term the loading-opening, in which is fitteda swinging cover g, pivoted at g to the frame. (See FigsrS and 10.) The forward I end g of the cover g when normal is adapted to engage the rear end of the adjacent cartridge after the latterhas taken its initial movement in the hole 19 of the opening 1) of plate 1), thereby successively holding the eartridges in position as the magazine is rotated.

The opposite or rear end of the cover is resisted by'the vertical spring 1 thus renderin gthe cover selfclosing. \Vhen the carrier is raised to a certain point, the cover g may be pressed inwardly, so that cartridges can be passed from the filling-groove g (shown by dottedlines in Figs, 8 and 10) into the reservoir-chambcrs, charging the magazine.

The carrier bloek c is nicely fitted and guided to work'vertically in the opening formed in the frame at rear end of barrel. The carrier is provided with two horizontal seats arranged one 'over the other, theupper one, a, when the carrier is in its'lowest or normal position, coinciding with the bore bof the gun-barrel, the lower seat 0 at the same time coinciding with the outlet-opening p of the plate p, through which the cartridges are fed singly from the magazine to the carrier. Therear end of the carrier is provided at its right side with a Vertical slot 0 in which a block or piece 0 is slidably fitted. Said piece carries at its upper end a stud or pivot c on which the pawl 77. swings. The lower end of the pawl ishook-shaped andis kept in contact with the teeth of the"ratchet-wheel m before referred to, by means of a spring or, 1

secured'to the carrier.

By means of the arrangement j ust described it will be apparent that the magazine will not be rotated until the upward movementof the carrier ccauses the lower end of the slot e to engage. the corresponding end of the block 05, at which instant all the parts will commence to move in unison, the further upward move- I ment of the carrier to its limit causing the 7 of the spring m it will become automatically to the enlarged w pawl to rotate the wheel n and magazine onefifth of a revolution. carrier is provided with a slightly-yielding plate or cover it, its central portion being cut away and forming substantially a continuation of the lower seat The lower portion is divided laterally, so as to freely pass either side of the spindle 0, the ends forming a stop to prevent the escape of cartridges from the magazine while the carrier is in its elevated position. (See Figs. 9 and 15.)

The carrier-block is actuated by a guard or operating lever Z through the medium of an intermediate level i the outer or free end of the latter being mounted in a side notch formed in the front end of the block. The hub portion w of lever 75 is supported by and fitted to turn on the fixed screw 1*, forming the pivot or fulcrum of the guard-lever l. The said hub'w is provided with a lateral extension or dog 71?, carrying the free end of a comparatively stiff spring 3, Fig. 2. he under side of the extension is flattened and adapted to contact with a similar surface k (see also'Figs. 6 and-7,) forming a part of the lever Z and arranged to move in a circular path. The hub to is also provided with two peripheral notches 8 (shown by dotted lines in Figs. 2, 6, and 7,) adapted to receive the free end of a flat spring 2'. The relation of these notches is such that the spring i operates to hold the lever t in both its elevated and depressed positions.

From the foregoing it will be seen that in swinging or dropping the lever Z to ,its limit, as in opening the gun, it will engage the dog h and thus force the lever 25 and the connected carrier-block upwardly to the position shown in Figs. 2 and 9. .The spring sreturns the lever t and carrier to the normal position sim ulpaneously with the act of retracting lever The breech-block mechanismv is also actuated by the guard-lever Z. The breech-block proper, It, is provided with a suitably-guided forward ann ular extension is, arranged at the rear of and in alinement with the bore of the barrel b, as clearly shown in Fig. 6,-&e. Said part is is flattened on opposite sides to permit the carrier to freely pass by it at certain parts of the action. As drawn, the rear end of the barrel is counterbored to receive the forward end of the part It. The block 7c is counterbored rearwardly and has an enlarged firingpin 6 inserted therein. Said pin is capable of a short independent endwise movement, a pin or screw (2 serving to secure both parts together. The rear portion of the member e is slidably fitted into and extends through the frame and is adapted to be acted upon by the hammer h. The opposite end portion 6' of the pin e is reduced in diameter and extends into the annular portion of the breech-block, where it contacts with a shorter piece e forming the firing-pin proper. A screw 6 main- The front end of the whose head is adapted to slide in a slot 1",

formed in a swinging arnir, pivoted at r to the frame. An end of a link q is jointed at 7' to said arm 0', its other end being jointed at r to the breech-block 7;, the arrangement or relation of the said pins 7', '1 and 1 being such that they form a togglefjointeon nection, the centers thereof when the gun is closed being in a plane common to all and substantially parallel with that of the breech-block.

The breech-block is provided with a slightlyyielding shell-extractor a its forward end being notched and adapted to engage the rim of the cartridge. (See Fig. 6.) As drawn, it is connected with a screw 6 passing through the sliding breech-cover n, the arrangement being such that the act of withdrawing or retracting the breech-block operates also to actuate the cover, thereby automatically 1..)- covering the top opening in the frame.

Assuming the several parts of my improved firearm to be in the normal position substantially as represented in Fig. 1, the operation of firing and recharging the barrel from the magazine is as follows:

The cartridge is first exploded through the medium of the hammer and firing-pin substantially as usual, after which the operator quickly drops the guard-lever Z to its limit. The first part of said movement retracts the breech-block, therebysimultaneously uncovering the frame, withdrawing the cartridgeshell and ejecting it, (by means of its sudden engagement with the stop-pin o in the upper seat of the carrier,) and cooking the hammer, all as representedin Fig. 7. The latter part of thelevers said movement as in carr in it to its limit, elevates the carrier-block and places a new cartridge in position preparatory to being inserted into the barrel, at the same time rotating the magazine one-fifth of a revolution, closing the feed-outlet 19 thereof, and bringing the next succeeding cartridge int-o place to be delivered to the carrier 0 upon its return. (See Figs. 2 and 9.) It is to be noted that the spring meanwhile is in engagement with the second notch-that'is, the notch nearest the spring 8. The operator now at one movement returns the guard-lever Zto its normal position. The first part of said movement advances the breech-block and pushes the cartridge resting on the upper seat 0 endwise from the carrier into the bore of the gunbarrel, at which instant the forward side of the arm Z in its angular movement engages the adjacent side of the hub w of the lever t and forces the latter from the retainin g-sprin g z, thereby in conjunction with the spring 3 forcing the carrier 0 downwardly to its normal position, the end of the pawl n in its dei 2 "in the tubes, and a fixed plate 19 closing the 65 i one portion 12 of which opening cartridges from the magazine endwise onto the lower feed-outlet p of the disk 19, thereby wholly:-

releasing the contiguous spring-resisted cartridge, which is then delivered with pressure seat of the carrier, where it is arrestedby the wheel n extending upwardly into the said carrier-seat. -(See Fig. 16.) The finalpart of the closing movement forces the cartridgeto its seat in the barrel, the head of the ex; tractor member a at the same time yielding to receive the rim of the cartridge, thereby completing the operation.

Figs. 1 and 6 show the corresponding relation of the parts. The hammer, however, would be left in the f ullcock position.

i I claim as my invention and desire to secure by United States Letters Patent- 1.. In a magazine-firearm, the combination of an intermittingly-revoluble magazine consisting of a series of tubes at arranged around a' common center, resilient-followers mounted rear end of the magazine; said plate having an elongated opening 19' therethrough comv inuni'cating with the rear end of two contignone tubes, one part 19 of said opening being adapted to freely receive the cartridges, as in loading the magazine, the other part 19 of the opening having an inwardly-extending circulady-arranged rib or flange, arranged where-- by upon turningthe magazine the rear end of'the' next succeeding cartridge will be deflectedpast said rib, thereby bringing it into position ready to be ejected into the carrierblock when the latter is depressed to its limit, substantiallyf'as described.

2. In a magazine-firearm, the combination with a rotatable multichambered magazine and a movable carrier-block, constructed and arrangedwith relation to each other substantially as hereinbefore described, of the fixed plate or head 19 interposed between the adjacent ends of the magazine and carrier-block,

said plate having an intcrcommunicating loading and feeding opening formed therethrough communicating with two contiguous chambers of the magazine, a vertical cover or cap u secured to the front end of the carrierblock extending downward across said plateopening while. the cartridge is'being .trans-' ferred from the block into the barrel, and a swinging cover 9 having its free end extending through the plate-opening tohol'd the contiguous cartridge in position until the magazine is again rotated, substantially as de-' scribed.

3. In a magazine-firearm, a suitably-mount-I ed fixed plate or head 19, arranged to comrnunicate with a rotary magazine having a series of chambers, said plate having an elongated or slotted opening 19 fori ed therein, through may be passed freely into the contiguous the magazine, the other portion p being counterbored from the rear side to prevent the escape of cartridges from the adjacent chamber, said portions of the opening being intercommunicating and capable of receiving the rim or enlarged end of a cartridge from a charged chamber rearwardly into the portion 19 against a suitable stop, so that upon turning the magazine axially the said-rim part of the the act of dropping-the guard-lever actuates the intermediate lever to elevate the carrierblock and at the same time to rotate the magazine, substantiallyas and for the purpose set forth. i p 5. Ina magazine-firearm, the combination with the revoluble magazine provided with a ratchet-wheel,and a fixed apertur'ed plate covering the mouth oft-he magazine, of the carrier-block me mber,substantially as described, having two interc'oinmunicating seats arranged in different horizontal planes, one above the other, a pawl slidably mounted in the rear end portion of the block capable of engaging said wheel, and having the oppositedownwardly-extending spring-plate, for the purpose hereinbefore set forth.

stantially as hereinbefore described, the same consisting essentially of a barrel andbreechstock, a frame uniting them, a spring-resisted hammer and trigger mounted in said frame, a multichambered revoluble magazine mounted below and parallel with the barrel, a ratchet-wheel through which the magazine is revolved, a vertically-movable double-seated carrier-block arranged to communicate with and rotate the magazine, a vertically-slidable spring-pawl mounted in said carrier-blockadapted to engage said ratchet-wheel, a fixed plate or disk having an opening therein through which cartridges are introduced into and delivered from the magazine, said plate being interposed between the adjacent ends of the carrier-block and magazine, aself-closing pivotally-mounted loading-cover filling an opening formed in the side'of theframe and communicating with the magazine, a slidable cover closing an opening formed in the breech-block, provided with a shell extractor cartridge is carried around in the slot and into engaging thecarrier-bloek, arranged whereby magazine-chamber, as in loading or charging 4:. In a magazine-firearm, the combination;-

or forward end of the block provided with a p 6. The improved magazine-firearm, sub- I frame'above .the carrier-block, a movable and firing-pin, mounted at the rear of and'in adapted, for operation substantially as shown line with the barrels axis and attached to. and described and for the purposes set forth. 10

said slidable cover, a pivotally mounted re- In testimony whereof I have afiixed my sigsilient lever or connection connected with the naturein presence of two witnesses. carrier-block for actuating the 1atter,aswingv a WVILLIAM H. DAVENPORT. ing guard-lever having an inner arm, and Witnesses: t

suitable connections uniting the said breech- GEO. H. REMINGTON,

block and guard-lever, all combined and iFREDERIO ARNOLD.

Referenced by
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US3454898 *Mar 16, 1964Jul 8, 1969Hughes Aircraft CoTriggering mechanism for high speed laser switching
US4905395 *Feb 6, 1989Mar 6, 1990Wagner David MIncreased capacity magazine for firearm
US5119575 *Oct 22, 1990Jun 9, 1992Gajdica Michael SRotary magazine for firearms
US6877265Mar 6, 2003Apr 12, 2005Snake River Machine, Inc.System and method for increased magazine capacity for a firearm
US7380361Mar 17, 2005Jun 3, 2008Snake River Machine, Inc.System and method for increased magazine capacity for a firearm
US7779571 *Apr 29, 2008Aug 24, 2010Mark RothAuto loader firearm accessory
US20040020093 *Mar 6, 2003Feb 5, 2004Jeffrey HajjarSystem and method for increased magazine capacity for a firearm
US20050241204 *Mar 17, 2005Nov 3, 2005Snake River Machine, Inc.System and method for increased magazine capacity for a firearm
US20080121096 *Jan 31, 2008May 29, 2008Jeffrey HajjarSystem and method for loading and feeding a shotgun
EP1914501A1 *Oct 20, 2006Apr 23, 2008Prosapiens Malmoe ABSemi-automatic weapon
WO2005015113A1 *Jul 23, 2004Feb 17, 2005Lauro RossiAdditional magazine for smooth-bore shotguns
WO2008046928A1 *Oct 22, 2007Apr 24, 2008Prosapiens Malmoe AbSemi-automatic weapon