Patent GB-191005351-A (GB)
Title: Improvements in Cartridge Magazines for Fire-arms.
Inventor: SCHLUETER BERNHARD
IPC: F41A9/68
Filed: 1910-03-07
Granted: 1911-02-23
Abstract: 5351. Schl³ter, B. March 7. Breech actions, sliding breechblock.-Relates to magazines i n which two or more rows of cartridges separated b y hinged partitions in a magazine are fed in turn to the position for insertion into the barrel, each successive row being automatically brought into position when the last cartridge has been taken from the preceding row, and consists in providing the lifter with a pin at each end working in guide slots or grooves so arranged as to direct the cartridges of each section of the magazine towards the delivery opening. The pins may also trip, in known manner, mechanism for putting successive rows of cartridges into position. In the construction shown in Figs. 1, 3, and 4, three rows are provided, separated by partitions f pivoted at g. Each partition has a bent-over edge i and ribs to engage the grooved heads of the cartridges, as shown in Fig. 3. The spring-pressed lifting- plate m of the central row has on each end a pin n engaging slots o, Fig. 4, in the walls of the magazine, which slots communicate with slots at right-angles thereto, in order to allow the partitions f to move to the right or to the left under the action of springs p, according as the right or left row of cartridges is brought into position for engaging the breech-bolt. The springs are so chosen that the left-hand row of cartridges is brought into position immediately after the central row has been used, the righthand row following the left-hand row. Rollers q on the pins n engage projections r on the magazine case to facilitate the motion of the partitions f. In modifications, (1) when two rows of cartridges are used, the top cartridge in the right-hand row is normally higher in position than that in the left, so that the right-hand row is used first; a projection keeps the cartridges in the left row down until the central partition has been moved to the right to allow the left row to be emptied. (2) The rollers q and projections r, used in the construction shown in Figs. 1, 3, and 4, are dispensed with, and each lifting-plate pin n engages a guide-channel formed within the casing, the two outer channels being inclined inwards, and the central channel having a part at the top inclined to the right to facilitate the left-hand row being emptied before the right-hand row. (3) The springs p, Fig. 1, are dispensed with, in the construction shown in Fig. 14, the central groove x is vertical, the side grooves x are inclined inwards, and the central lifting-plate is only half the width of the cartridge chamber. Levers 9, 10 are mounted on the magazine case and are kept by springs in engagement with projections 13 on the partitions f. The pin of the central lifting-plate lifts the lever 9 and allows the left-hand row of cartridges to come into position, while the lifting - plate of the left - hand row lifts the lever 10 and allows the right - hand row to come into position. (4) One lever is arranged to control two movable partitions. The springs p, Fig. 1, form the outer partitions, and the lever is pivoted in the path of the pin of the central lifting-plate. (5) The arrangement shown in Fig. 14 is applied to magazines containing five rows of cartridges, the rows being used in the order 3, 2, 1, 4, 5 and being numbered from left to right; (6) a similar arrangement is used for six rows of cartridges, which are used in the order 4, 3, 2, 1, 5, 6. In modifications (5) and (6), the guiding-grooves for the lifting-plates are inclined towards the central vertical line of the magazine. (7) The left-hand lifting-plate spring is arranged to overcome that of the right-hand lifting-plate in a three-chamber magazine by inclining the central groove to the right. (8) A threechamber magazine is arranged to carry twelve shot-cartridges in one row and ten ball cartridges in two rows of five each, for use with a gun having two barrels suitable for such cartridges. (9) A three-chamber magazine carries six rows of cartridges, each chamber having a double row arranged in staggered formation, the lifting-plates having pins of square section engaging the guide grooves to prevent tilting. (10) A two-chamber magazine has three rows of cartridges; one chamber has a double row and is emptied first. The magazine chamber in the gun may be telescopic as shown in Fig. 1, and a spring flap may be provided to close the lower part of the chamber when the magazine is removed. Magazines with nine, eleven, and fourteen chambers respectively are described for machine guns, the partitions being controlled by mechanism of the kind shown in Fig. 14. Fig. 23 shows the arrangement for nine chambers which are emptied in the order 1, 2, 4, 5, 6, 3, 7, 8, 9.