Cartridge for hand and shoulder firearms

• US 4,136,616 A
• Filed: 08/09/1976
• Issued: 01/30/1979
• Est. Priority Date: 08/09/1975
• Status: Expired due to Term

• Current Assignee: Hans-Ludwig Schirneker
• Original Assignee: Hans-Ludwig Schirneker
• Inventors: Schirneker, Hans-Ludwig
• Primary Examiner(s): Tudor, Harold J.
• Application Number:
  US05/712,665
• Time in Patent Office: 904 Days
• Field of Search: 102/38, 102/91, 102/92.1-92.7
• US Class Current: 102/510
• CPC Class Codes: F42B 12/34 expanding before or on impact, i.e. of dumdum or mushroom type
• CPC Class Codes: F42B 5/02 Cartridges, i.e. cases with charge and missile

Abstract

A cartridge for firearms comprises a cartridge case filled with powder and containing a fuse and a projectile being in the form of a cylindrical main body having at its front end a central projecting tip and/or a projecting circumferential rim and having a circumferential shoulder of a relatively hard material such as iron, tombac, or copper.

Claims

1. A cartridge for hand firearms and shoulder arms, comprising a cartridge case containing powder and a fuse, and a projectile inserted in said case, said projectile comprising a substantially cylindrical main body of hard material such as iron, tombac or copper, said body including a forwardly projecting annular rim portion which defines a central cavity and which mushrooms out upon the projectile striking the target, the leading end of said rim portion being constructed to form a shoulder, a convex cap at the front of said projectile and closing said cavity, said cap engaging and being supported by said shoulder, and a central projecting, generally pointed tip integral with said body and extending into said cavity, said cap remaining essentially intact and being pushed into said cavity so that said cap is fixed to said tip upon the projectile striking a target.

2. A cartridge according to claim 1, wherein said projected rim portion projects forwardly beyond said tip.

3. A cartridge according to claim 1, wherein the inner surface of said forwardly projecting rim portion is downwardly and inwardly tapered whereby said rim portion increases in thickness as it approaches the base of said tip.

4. A cartridge according to claim 3, wherein the base of said tip bears against the inwardly tapered surface of said rim portion.

5. A cartridge according to claim 4, wherein the plane of separation between the base of said tip and the internal wall of said rim portion ends in an inwardly curved hook.

6. A cartridge according to claim 1 wherein a coating is provided on the internal surface of said cap to promote adherence to said tip.

7. A cartridge according to claim 6, wherein the width of the bearing surface of said step of said shoulder is less than the thickness of said rim of said projectile body at the level of said step.

8. A cartridge according to claim 1, wherein said shoulder is formed by a step extending at approximately a right angle to the longitudinal axis of the projectile and a side wall which tapers conically towards the outside, the angle formed by said step and said side wall thereby being acute.

9. A cartridge according to claim 1, wherein said cap has an aperture therein designed to serve as a vent.

10. A cartridge according to claim 1, wherein a hemispherical recess is provided at the rear end of said projectile body.

11. A cartridge according to claim 1, wherein a conical recess is provided at the rear end of said projectile body.

12. A cartridge according to claim 1 wherein an annular space is provided between the bottom of said rim portion of said body and the base of said tip thereby enabling said cap to be pushed further over said top when the projectile strikes a target.

13. A cartridge according to claim 1 wherein said main body is provided with a shallow circumferential groove on its external surface.

14. A cartridge according to claim 1 wherein the lower portion of said main body is hollow, and insert means of a softer material such as lead disposed in said hollow portion of said body.