US614635A - Wilhelm ulrich - Google Patents

Description

Nu. 6l4,635. Patented Nov. 22, I898. W. ULRICH.

SMOKELESS POW-DER CARTRIDGE.

(Application filed May 14, 189B.)

Fig.1.

(Nu Modal.)

Zibmsses:

m: uonms PlITiRS m, momuma. wasumurcw, n. 1:v

UNITED STATES WILIIELM ULRICH, OF ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPP, OF SAME PLACE.

SMOKELESS-POWDER CARTRIDGE.

SPECIFICATION forming part of Letters Patent No. 614,635, dated November 22, 1898.

Application filed May 14, 1898. Serial No. 680,673. (No model.)

To all whom it may concern:

Be it known that I, WILHELM ULRICH, a citizen of the German Empire, residing at Essen, Germany, have invented certain new and useful Improvements in Smokeless-Powder Cartridges, of which the following is a specification.

My invention has reference to improvements in smokeless-powder cartridges; and it consists, essentially, in a cartridge formed of a shell, a series of elastic concavo-convex annular disks made of smokeless powder stacked therein in pairs, the concave sides of each pair facing each other, and a cap adapted to press the disks together, so as to prevent loosening of the charge.

The forms in which smokeless powder has hitherto been used for cartridges make it almost impossible to always so fill the cartridge that the powder is firmly held therein. For firmly packing the powder special means have been used, such as placing the same into bags, firmly tying the same, or by pressing the charge against the bottom of the shell by corks or separate covers, &c. Without such means tubular powder would only be firmly held if thetubes were of the exact length of the shell and of a diameter exactly proportioned to the caliber. Powder in the form of spirals made from sheets (spiralites) or folded in the form of stars, &c., must be cut exactly to'the length of the cartridge shell. Nevertheless it has been found that when transported the several forms of powder just mentioned work loose, because all smokeless powder in the course of time shrinks by drying. The present shape of the particles of powder and the mode of arranging and holding the same within the shell not only overcome the difficulties mentioned, but also. have the advantage over all the charges hitherto known of causing an exceedingly-rapid transmission of the fire from the primerto the entire surfaces of all the individual powder disks.

The nature of my invention will best be understood when described in connection with the accompanying drawings, in which Figure 1 represents a longitudinal section of a cartridge embodying my invention. Fig. 2 is a cross-section of the same.

Similar letters of reference designate corresponding parts throughout both views of the drawings.

Referring to the drawings, the letter Adesignates the cartridge-shell, and b and b the powder disks. These disks are made in annular concavo-convex form, and the outer diameter of said disks is by preference such that it will closely fit the shell. This, however, is not absolutely necessary for firmly holding the charge. The number of such annular disks required is placed within the shell in pairs, the concave sides of each pair facing each other. By this means a column of powder is formed which in the direction of the length of the cartridge possesses a certain degree of elasticity. This column of powder disks is slightly compressed by a-brass cap 0, whereby the charge is so held that even by heavy jars it is not loosened. A further ad vantage of this new form and arrangement of the powder disks consists in the facility presented by the central passage for the free and rapid communication of the fire from the primer d to the surfaces of all the powder disks.

It is of course to be understood that the concavo-convex form of the disks need not be exactly that shown in the drawings and that any other suitable means for compress= ing the stack of disks may be used in place of the cap 0.

By the use .of the disks herein described, combined with means for compressing the same, shrinkagecaused by drying will be taken up by the elasticity of the disks, and the charge will not work loose.

What I claim as new isl. A cartridge consisting of a shell, a series of annular concave-convex disks of smokeless powder substantially of the diameter of the shell stacked in pairs within the shell so as to leave a central longitudinal passage, the

concave sides of each pair facing each other,

and means for compressing the disks, substantially as and for the purpose specified.

2. A cartridge consisting of a shell, a series of annular concave-convex disks of smokeless powder substantially of the diameter of the shell stacked in pairs Within the shell so as to. leave a central longitudinal passage, the concave sides of each pair facing each other, and a cap adapted to press and hold the disks against the bottom of the shell, substantially 10 as and for the purpose specified.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.

WILHELM ULRICH.

Witnessesi J OH. BECKER, WILLIAM ESSENWEIN.

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