Adaptor assembly for converting a case sizing die assembly to a bullet seating die assembly

Abstract

Various commercially available ammunition case sizing die assemblies consist of a die base and a subassembly which is threadedly installed in the die base. The subject adaptor assembly is configured to be installed in the sizing die assembly die base. As a result, a case sizing die assembly can be converted to a bullet seating die assembly by removing the subassembly of the case sizing die assembly and installing the subject adaptor assembly in its place. The subject adaptor assembly is made up of a rod and a lock ring. The rod has a knurled knob at one end, a cylindrical portion at the other and a threaded portion between. The lock ring threads onto the threaded portion and has a set screw in it to lock the lock ring in desired positions. The cylindrical end has a cavity in it in which the bullet is held during seating of the bullet.

I claim  
     
         1 . An adaptor assembly for converting an ammunition case sizing die assembly to a bullet seating die assembly, said adaptor assembly comprising (1) a cylindrical rod having a first end, a second end, an outer surface, threads on a portion of said outer surface and a cavity in said second end, and (2) a disc having a threaded hole at its center, said disc being threaded onto said threads on said portion of said outer surface.  
     
     
         2 . The adaptor assembly of  claim 1  in which said rod has a knurled portion on said outer surface at said first end.  
     
     
         3 . The adaptor assembly of  claim 1  in which said rod has a cylindrical portion on said outer surface at said second end.  
     
     
         4 . The adaptor assembly of  claim 3  in which said rod has a knurled portion on said outer surface at said first end.  
     
     
         5 . The adaptor assembly of  claim 1  further comprising a set screw in said disc to lock and unlock said disc rotationally on said rod.  
     
     
         6 . The adaptor assembly of  claim 2  further comprising a set screw in said disc to lock and unlock said disc rotationally on said rod.  
     
     
         7 . The adaptor assembly of  claim 3  further comprising a set screw in said disc to lock and unlock said disc rotationally on said rod.  
     
     
         8 . The adaptor assembly of  claim 4  further comprising a set screw in said disc to lock and unlock said disc rotationally on said rod.  
     
     
         9 . An adaptor assembly for use in conversion of a cartridge case sizing die assembly, to a bullet seating die assembly, said case sizing die assembly comprising a sizing die base which is essentially cylindrical and has a bore and said bore has internal threads at said first end, said sizing die assembly further comprising a subassembly having external threads which engage said internal threads when said subassembly is installed in said sizing die base, said adaptor assembly comprising a cylindrical rod and an internally threaded lock ring, said rod having a first rod end and a second rod end, an outer surface, a knurled knob at said first end, a cavity in said second end and having external threads on said outer surface, said lock ring being threaded onto said external threads on said rod, said conversion being effected by removing said subassembly from said sizing die base and installing said adaptor assembly in said sizing die base, engaging said external threads and said internal threads and locking said adaptor assembly in place by tightening said lock ring against said first end.