Title: Tube primer

Abstract: A percussion-ignitable type tube primer has a closed end, thin walled metal tube, which is longitudinally indented over a portion of its length. The indention of the metal tube defines a convex anvil in the interior of the tube. The indented portion of the tube contains a percussively-ignitable primer mixture which ignites and deflagrates when the wall of the tube opposite the convex anvil is deformed by an impact or blow occasioned by a striking hammer or a pin. The primer is made by introducing a fluid paste of the primer mixture into the tube, indenting the tube and subsequently drying the primer mixture.

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Inventors: Olsen, Charles R.

Application Number: 487896
Filing Date: 1974-07-12
Publication_date: 1976-08-10
Assignee:
Primary Class(es): 102/204 102/322
Other Classes:
US Patent Ref:

1310844	Jul, 1919	Semple	102/70.
1491000	Apr, 1924	Brandt et al.	102/70.
2785633	Mar, 1957	Ewing et al.	102/86.
3911823	Oct, 1975	Murray et al.	102/86.

Other Refs:
Primary Examiner: Pendegrass, Verlin R.
Assistant Examiner:
Attorney: McCormick, Paulding & Huber