US2015107481A1PendingUtilityA1

Jacketed bullet and high-speed method of manufacturing jacketed bullets

34
Individually held — no corporate assignee on recordPriority: Oct 18, 2013Filed: Oct 18, 2013Published: Apr 23, 2015
Est. expiryOct 18, 2033(~7.2 yrs left)· nominal 20-yr term from priority
Inventors:George M. Nygaard
F42B 12/78F42B 12/74F42B 33/00F42B 33/001F42B 30/02
34
PatentIndex Score
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Claims

Abstract

A jacketed bullet and high-speed method of manufacturing jacketed bullets are provided. The method includes the steps of providing tubing and inserting a wire into the tubing to form composite tubular stock. The inner surface of the tubing is bonded to the outer surface of the inserted wire to form bonded tubular stock. After the bonding step, an inner diameter of the tubing is substantially equal to the wire diameter such that, when viewed in section, the wire completely fills the tubing. After the bonding step, the bonded tubular stock is cut to form work-pieces of a desired length. The workpieces are then warm or cold forged to form jacketed bullets.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A high-speed, jacketed bullet manufacturing method comprising:
 providing tubing made of a first material, the tubing defining an inner diameter and an outer diameter;   inserting a wire into the tubing to form composite tubular stock, the wire being made of a second material and defining a wire diameter, the first and second materials being different from one another;   bonding the inner surface of the tubing to the outer surface of the inserted wire to form bonded tubular stock, wherein, after the bonding step, the inner diameter of the tubing is substantially equal to the wire diameter such that, when viewed in section, the wire completely fills the tubing;   after the bonding step, cutting the bonded tubular stock to form work-pieces of a desired length; and   warm or cold forging the workpieces to form jacketed bullets.   
     
     
         2 . The method as claimed in  claim 1 , further comprising the steps of coiling the bonded tubular stock and uncoiling the coiled, bonded tubular stock prior to the step of cutting. 
     
     
         3 . The method as claimed in  claim 1 , wherein the step of forging is performed by a warm or cold forging machine. 
     
     
         4 . The method as claimed in  claim 3 , wherein the machine includes a series of horizontal punches and dies. 
     
     
         5 . The method as claimed in  claim 1 , wherein each of the bullets is configured to be received within a standard caliber, small or personal firearm cartridge. 
     
     
         6 . The method as claimed in  claim 1 , wherein the second material is harder than the first material. 
     
     
         7 . The method as claimed in  claim 1 , wherein the first and second materials are first and second metals, respectively. 
     
     
         8 . The method as claimed in  claim 1 , wherein the tubing is a seamless metal tubing. 
     
     
         9 . The method as claimed in  claim 8 , wherein the metal is copper or a copper alloy. 
     
     
         10 . The method as claimed in  claim 1 , wherein the step of forging includes forming a nose for each of the bullets. 
     
     
         11 . The method as claimed in  claim 10 , wherein the nose includes exposed material of the second material. 
     
     
         12 . The method as described in  claim 1 , wherein the step of bonding includes the step of drawing the tubular stock. 
     
     
         13 . A jacketed bullet made from warm or cold-forging-grade, composite tubular stock, the bullet comprising:
 an outer jacket formed of a first metallic material, the outer jacket comprising a tube defining an inner tube diameter and an outer tube diameter and making up a percentage of a total cross-sectional area of the bullet; and   an inner core formed of a second metallic material, the inner core material comprising a solid metallic wire defining a core diameter and making up the balance of the cross-sectional area of the bullet;   wherein the first and second metallic materials are different from one another and wherein the inner tube diameter is substantially equal to the core diameter such that, when viewed in section, the inner core completely fills the outer jacket.   
     
     
         14 . The bullet as claimed in  claim 13 , wherein the bullet is configured to be received within a standard caliber, small or personal firearm cartridge. 
     
     
         15 . The bullet as claimed in  claim 13 , wherein the bullet has a nose. 
     
     
         16 . The bullet as claimed in  claim 15 , wherein the nose includes exposed material of the second material. 
     
     
         17 . The bullet as claimed in  claim 13 , wherein the second metallic material is harder than the first metallic material. 
     
     
         18 . The bullet as claimed in  claim 13 , wherein the tube is a seamless metal tube. 
     
     
         19 . The bullet as claimed in  claim 13 , wherein the first metallic material is copper or a copper alloy. 
     
     
         20 . The bullet as claimed in  claim 13 , wherein the composite tubular stock comprises a solid coil of multi-metal wire. 
     
     
         21 . The bullet as claimed in  claim 20 , wherein the wire is a bi-metal wire.

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