US 1094395 A
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J. W.'PEPPELMAN VAN KAMPEN & G. A. COX.
UNIVERSAL RIFLE PROJEGTILE. APPLICATION FILED 313.17, 1914.
1,094,395, Patented Apr. 21, 1914.
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JAN WILLEM PEPPELMAN vAN KAMPEN, 0F WATERGRAAFSMEER, AND GELDOLPH ADRIAAN COX, OF UTREGHT, NETHERLANDS.
Specification of Letters Patent. Pgfl gnted Apr. 21, 1914:.
Application filed February 17, 1914. Serial No. 819,204.
To all whom it may concern:
Be it known that we, JAN WILLEM PEP- PELMAN VAN KAMPEN and GELooLPH AD- R'IAAN Cox, subjects of the Queen of the Netherlands, residing at Watergraafsmeer and Utrecht, Netherlands, have invented certain new and useful Improvements in Universal Rifle-Projectiles; and we 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 to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification. 7
There are already known projectiles with normal external shape which are provided with an internal core in order to obtain a maximum axial resistance of the projectile. Furthermore, it is known to provide the head of the projectile casing with a hole, so that the casing is broken, the hole being eventually covered with a loose cap.
In order to obtain a higher penetrative power a cased projectile has been made, the front part of which consists of a hardened steel point, the rear part consisting of a soft metal of high specific weight; the center of gravity of-the projectile is, however, consequently shifted backward over a rather long distance, which is not desirable.
The present invention provides a universal rifle projectile with a hardened steel spindle arranged in a core of hardened lead, the steel spindle having a rounded point which rests against the inner surface of a recess provided in the head of the casing. This arrangement results in a penetrative power far exceeding that of all other projectiles of the same caliber, even when they are provided with a steel spindle. The
greater penetrative power of the projectile according to the invention is due to the fact that the construction of the projectile allows of a double impulse against the body to be penetrated. The projectile can penetrate at very short distances steel plates of 1015 mm. thickness; by increasing the initial velocity of the projectile it is, therefore, possible to penetrate at great distances the protective covers, 6. g. the steel plates, of field artillery or of machine guns. At less distances the adversary can be disabled by a single shot, owing to the special shape of the head. It is possible to regulate by the shape of the recess the kind of wound inflicted by the projectile.
In addition to the recess in the head, the projectile may also have a conical cavity at the rear end of the steel spindle, this cavity being filled with hardened lead, which is of greater specific weight than steel. This arrangement increases the penetrative power of the steel spindle, since the moment after the projectile has touched the object at which it is directed, the mass of the spindle is increased by the mass of the hardened lead contained in the cavity.
In the accompanying drawing we have shown in longitudinal section a rifle projectile embodying our invention in one form.
As here shown the projectile has a cop per-nickel-steel casing 1 and a core of hardened lead 2. The general external shape is the ordinary ogivo-cylindrical one.
The nose of the projectile is provided with a recess 3 formed by recessing or cupping the steel casing. The core of hardened lead 2 contains a hardened steel spindle 4, which rests with its point against the bottom of the recess 3. This steel spindle has the external shape of a pointed projectile, but is preferably somewhat rounded at the point. The rear end of the spindle 4: has a preferably conical cavity (5). This steel spindle may have any suitable diameter; as here shown it is less than the internal diameter of the projectile casing, and it is embedded throughout its length in a relatively important mass of lead. In this way the center of gravity is maintained as far forward as possible.
We claim as our invention 1. A projectile comprising a metal casing axially recessed or cupped at the nose of the projectile, a soft metal core of great specific weight within the casing, in combination with a hardened steel spindle arranged axially within said casing and core with its point resting against the bottom of the cup in the casing at the nose of the projectile, substantially as described.
2. A projectile comprising a metal casing axially recessed or cupped at the nose of the projectile, a,soft metal core of great specific weight within the casing, in combination with a hardened steel spindle arranged axially within said casing and core with its point resting against the bottom of the cup in the casing at the nose of the projectile said spindle being recessed at its 5 opposlte end to receive a quantity of soft metal of great specific weight.
In testimony whereof we have signed our names to this specification in the presence of two subscribing Witnesses.
JAN WILLEM PEPPELMAN VAN KAMPEN.
GELDOLPH ADRIAAN COX. fitnesses P. HILDERN, D. N. GEYN.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,
Washington, D. G.