Ammunition and explosive-charge making – Ammunition loading – Crimping
Reexamination Certificate
2010-02-24
2010-12-21
Chambers, Troy (Department: 3641)
Ammunition and explosive-charge making
Ammunition loading
Crimping
C086S039000
Reexamination Certificate
active
07854188
ABSTRACT:
An ammunition case reloading die assembly, and method of use, that provides calibrated adjustment of taper imposed on the mouth of an ammunition case. A calibrating ring or cap bears indicia in the form of polygonal faces, splines or radially-directed markings. The ring or cap rotates with an upper portion of the die for threaded adjustment of the position of the die within the frame of a reloading press. The die has a longitudinal bore, a lower portion whereof is tapered for imposing a tapered crimp upon the mouth of the case. The taper of the longitudinal bore is preferably chosen to make each partial rotation of the calibrating ring or cap through one indicium correspond to increasing the taper imposed on the mouth by one thousandth of an inch per case longitudinal inch.
REFERENCES:
patent: 1550284 (1925-08-01), Schmitt
patent: 1864880 (1932-06-01), Zimmerman
patent: 2700915 (1955-02-01), Pattison
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patent: 4637291 (1987-01-01), Alexander
patent: 4836078 (1989-06-01), Lee
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patent: 4869148 (1989-09-01), Tucker
patent: 5079986 (1992-01-01), Lee
patent: 5635661 (1997-06-01), Tuftee
patent: 5649465 (1997-07-01), Beebe
patent: 6397720 (2002-06-01), Fox et al.
patent: 7703369 (2010-04-01), Lee
patent: 2002/0157524 (2002-10-01), Tuftee
Lee Carbide Factory Crimp Die Instructions (one sheet); authored by Lee Precision, Inc., 4275 Highway U, Hartford, Wisconsin.
Catalog: “Lee Reloading 2010” by Lee Precision, Inc. (same address; see, in particular, p. 3: “Lee Carbide Factory Crimp Die.”
Chambers Troy
Coyne Brian J.
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