Die for crimping bullets in ammunition cases

Details Die for crimping bullets in ammunition cases Die for crimping bullets in ammunition cases

1990-11-15

1992-01-14

Kyle, Deborah L.

Ammunition and explosive-charge making

Ammunition loading

Crimping

86 40, F42B 3312

Patent

active

050799860

ABSTRACT:
A cylindrical die body has an axial bore in which there is an annular tapered shoulder. A cylindrical collet is adapted to fit coaxially in the bore of the cylindrical body. The collet has an axial bore extending over the majority of its length for accommodating the body of an ammunition case and has a smaller coaxial bore through which a bullet installed in the mouth of the case can extend. The fingers of the collet terminate in finger tips which surrounds the small bore. The mouth of the case which holds the bullet extends into the space between the collet finger tips such that when the collet is pressed into the cylindrical die body, tapered surfaces exterior of the collet run ionto the tapered shoulder in the die body to generate a wedging action which forces the tips of the collet fingers in a radial direction into the mouth end of the cartridge case to thereby crimp the mouth end of the case to the bullet.

REFERENCES:
patent: 2552772 (1951-05-01), Fasig
patent: 2700915 (1955-02-01), Pattison
patent: 4385546 (1983-05-01), Lee
patent: 4723472 (1988-02-01), Lee

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