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Publication numberUS979721 A
Publication typeGrant
Publication dateDec 27, 1910
Filing dateFeb 11, 1910
Priority dateFeb 11, 1910
Publication numberUS 979721 A, US 979721A, US-A-979721, US979721 A, US979721A
InventorsHarald Sunngaard
Original AssigneeHarald Sunngaard
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Magazine for guns.
US 979721 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


Patented Dec. 27, 1910.

. subject of VIo'nge'nsgate 33, Christiania,

luur-11n fermes PATENT ernten.




Specification of Letters Patent.

' Patented 1390.27, 19,10.

Application filed February 11, 1910. Serial' No. 543,289.

To all whom it may concern:

Be it knownthat I, HARALD SUNNGRD, a the King of Norway, residing at l Norway, have invented certain new and useful Improvements in Magazines for Guns; and I do hereby declare the following to be a full,

Y small that when used in war the magazines are considered simply as packages and therefore at moments'ofthe fight when time is too precious to permit of refilling the magazines are thrown away, at any rate temporarily, as-soon as empty, to be substituted in a few seconds by the attachment to 'the lirearm of fresh package magazines. 4

In the accompanying drawing I have shown one form of magazine embodying my invention; Figure 1 being a erspective view of the magazine as applie to a rifle, the rear wall being removed. Fig. 2 is an axial section through the magazine, and Fig. 3 a.

side view.

In the center of a preferablyl conical drum A, the walls of which may be corrugated for strengthening the same, is mounted an axle B which may be turned by means of a flexible arm'C, capable of being arrested in a notch or between projections C on the outside of the drum.

Around the axle B and connected with the same by means of 'a spiral spring D' is placed a tube E, which forms the hub of a wing wheel whose wings F nearly but not wholly fill the space between the hub and the periphery of the drum. The side wall of the magazine has an opening, through which the cartridges pass out one by one and said opening may be clot-ed by a lid, as shown at A1, Fig. 3. These spring- Vactuated rotatable wings or partitions F divide the interior of the magazine into sector- Vshaped compartments, each. holding several 1rirtridges lying loose and'promiscuous, said compartments being of such dimensions that the maximum distance between the partition -walls is just suii'iciently less than the length of the cartridges to prevent the latter from tipping. over or turning endwise. The cartridges are left to arrange themselves in the compartment that at any time is in the lowermost position simply by force of gravitation, so that the cartridges in this compartment lie next to and form distinct rows along the interior of the magazine.

G and H indicate curved guide wings attached to the end-walls of the drum at the opening, and serve to cut out from the inner layers of cartridges the .layer or row which at the moment is in the peripheral row, and thereby insure the entrance of these cartridges into the breech opening in good order. It may happen, however, especially when the magazine is half emptied, that a cartridge lying in the second row will tilt down so that the projectile or bullet will be among the cartridges of the lowermost row, and so might stop the operation of the magazine on account of its projectile, and not its.

shell, coming under the guide Wings of the delivery mouth. According to my invention this tilting of the cartridges is counteracted by making the guide Wing H that lies over the projectile broadenough to reach nearly to the breast ofthe cartridge, and, furthermore, by beveling the interior end of said wing and so tapering it inward that the projectile of the tilting cartridge is thereby lifted up and caused to pass over or above the guide Wing, instead of being caught under 1t or 'stopping up against the same, which would entire y stop the action of the magazme.

The magazines when fully charged hold as many cartridges as are contained in all the sector-shaped compartments of the magazine. and, as explained above, these sector-shaped compartments shall be neither of less nor of larger dimensions than tojust prevent the last cartridges of a nearly emptied magazine-compartment from tipping over or turning endwise. Smallmagazine's of about 60 cartridges are providedwith four rotatable partition Walls medium-sized magazines of about 8O cartridges have 5 rotatable partition walls; and large magazines ofA about 100 cartridges have G rotatable partition 1'10,

I and J designate slots cut in the wings- The magazine may be attached t0 the gun in any convenient manner for instance by Way of projections K having ribs L itting into the pockets or notches on the gun.

The operation is as follows: When the magazine is filled the axle B is turned around by means of the arm C so as to give' tension to thespring; the arm is then arrested. As cartridge by cartridge is taken away from 4the magazine by the brecchbolt of the gun, lthe spring will cause the feed Wheel 'to be turned and so the cartridges one after one, row after row all around will be pressed into the breech opening of the gun.

A detachable magazine for guns, comprising a casing, cylindrical in cross section,` a rotatable hub journaled in the casing, of small diameter as compared With the. diameter of the casing, a plurality of Wings eX- length .of'the cartridges to prevent a coinplete endWise movement of the latter, and

guide ribs project-ingfrom a delivery slot in the casing into the hpathA of the Wings, said wings having notches; to permit them to pass the guide-ribs.

In testimony that I claim the foregoing as my invent-ion, I have signed my .name in 'i presence of twosubscribing Witnesses.



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4487103 *Jun 24, 1982Dec 11, 1984Atchisson Maxwell GDrum magazine
Cooperative ClassificationF41A9/65