High altitude friction igniter

Details High altitude friction igniter High altitude friction igniter

1974-09-18

1976-03-09

Engle, Samuel W.

Ammunition and explosives

Igniting devices and systems

102 70F, 149 22, 149 29, 149 44, 149 82, F42C 700

Patent

active

039424456

ABSTRACT:
A friction igniter assembly for high altitude operation having a pull wire oated with a scratch sensitive composition which is moved through a chlorate composition. The scratch sensitive composition containing red phosphorus reacts with the chlorate to provide a flash which transfers ignition to an adjacent boron-lead dioxide composition. The boron-lead dioxide composition is the main igniting charge and provides an intense output of heat in a very short time for igniting a pyrotechnic composition.

REFERENCES:
patent: 1206827 (1916-12-01), Fairburn
patent: 1771455 (1930-07-01), Wiley
patent: 2170815 (1939-08-01), Eroe
patent: 2391823 (1945-12-01), Edmands
patent: 3617403 (1971-11-01), Johnson

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