US 4,732,073 A · Primer pocket swaging device

Abstract

A primer pocket swaging device for use in cartridge reloading equipment, which is characterized by a cylindrically-shaped collet cover having a hollow, threaded interior for receiving a threaded nipple to enclose an expandable collet. The collet includes four shaped collet segments fitted together in expandable relationship by means of an O-ring and one end of a punch rod projects through the collet and the opposite end seats on the plunger of the reloading equipment by operation of a rod lock nut and an adaptor. The upper end of the collet cover is bevelled and fitted with an opening to receive the base end of an empty shell casing, wherein the base of the shell casing is inserted in the opening and is momentarily seated and held in the collet, while the punch rod extends upwardly and swages the empty primer pocket in the casing base responsive to operation of the reloading apparatus. After the swaging operation is complete, the casing is released from the collet by further manipulation of the reloading apparatus to force the punch rod downwardly and the primer pocket swaging device is in position to receive a second shell casing.

Claims46

Dependent claims

A primer pocket swaging device for use with a loading press having a frame, a plunger reciprocating in the frame and means carried by the frame for reciprocating the plunger, said primer pocket swaging device comprising collet cover means adapted for mounting in the frame of the loading press, said collet cover means provided with an opening in one end for receiving a shell casing base having a base flange and an empty primer pocket;

expandable collet means located in said collet cover means for selectively engaging and securing the shell casing base inside the collet cover means;
and rod means having one end slidably engaging said collet means, with the opposite end of said rod means adapted for attachment to the plunger in the loading press, for selectively contracting and expanding said collet means to grip the shell casing base, swage the primer pocket and release the shell casing base, in sequence, responsive to reciprocation of the plunger in the loading press.

A primer pocket swaging device for use in a cartridge loading apparatus having a frame shaped to receive the primer pocket swaging device and a plunger adapted to reciprocate in the frame, said primer pocket swaging device comprising a generally cylindrically-shaped, hollow, internally-threaded collet cover;

an internal bevel provided in one end of said collet cover and an opening located in said one end of said collet cover adjacent said internal bevel, for receiving a shell casing base having a base flange and an empty primer pocket;
expandable collet means located inside said collet cover for engaging the base flange and selectively securing the shell casing base inside the collet cover;
and a punch rod having one end projecting through said collet means in slidable relationship, with the opposite end of said punch rod carried by the plunger, for selectively expanding and contracting said collet means and receiving and gripping the shell casing base and swaging the primer pocket, and then releasing the shell casing base, in sequence, responsive to manipulation of the plunger in the cartridge loading apparatus.

A primer pocket swaging device for use in a cartridge loading apparatus having a frame shaped to receive the primer pocket swaging device, a plunger adapted to reciprocate in the frame and an arm pivotally carried by the frame for reciprocating the plunger, said primer pocket swaging device comprising a hollow, internally-threaded collet cover;

an internal bevel provided in one end of said collet cover and an opening located in said one end of said collet cover adjacent said internal bevel for receiving a shell casing base having a base flange and an empty primer pocket;
a plurality of expandable collet segments located inside said collet cover, said collet segments each having a bore segment, a base and an engaging end for engaging and selectively securing the shell casing base inside the collet cover;
resilient retaining means provided at said base of said collet segments for connecting said collet segments;
nipple means engaging said collet cover for mounting said collet cover to the frame of the cartridge loading apparatus;
and a punch rod having one end slidably projecting through said collet segments, said punch rod adapted to reciprocate inside said collet segments, with the opposite end of said punch rod removably carried by the plunger, for selectively expanding the engaging end of said collet segments, receiving the shell casing base, contracting said engaging end of said collet segments, gripping the shell casing base, swaging the primer pocket and expanding the engaging end of the collet segments and releasing the shell casing base, in sequence, responsive to manipulation of the arm and operation of the plunger in the cartridge loading apparatus.

2 more elements

Dependencies are inferred from the claim text.

Primer pocket swaging device

Life of this patent

Primer pocket swaging device

Life of this patent

Abstract

Claims46