Friction detonators

Friction Detonator, 15 Second Delay, Ml (Fig 68) is almost identical to the 8-sec delay detonator in overall appearance and functioning, except that its pull ring is circular and the powder-delay train is of 15-sec duration. (Ref 30a, pp 49-50 and Ref 32b, pp 126-27)... 

Friction Compositions for Friction Detonators Friction Firing Devices and Friction Igniters or Primers. These are powders which are easily ignited by friction. Some of the simplest mixtures are K chlorate with sugar or with antimony sulfide. Davis (Ref 1, p 453) gives table listing three compns which have been widely used in friction primers for artillety, separate-loaded ammunition... 

Friction Detonators. The following types of devices intended for initiating demolition charges, land mines and some underwater charges are described in Vol 4 of Encycl Friction Detonator, 8-Second Delay, M2 (p D804-R Fig 67) and Friction Detonator, 15 Second Delay, Ml (p D805-R Fig 68) French Friction Detonators are in Ref Ref Soci 6 Alsasienne d Explosifs, FrP 102355 CA 52, 3346(1958)... 

Compositions used in friction primers are listed under Friction Compositions (Compare with Friction Detonators and Friction Firing Devices)... 

Cutaway view of friction detonator (used to detonate flying bombs)... 

The term explosive or explosives includes any chemical, compound, or mechanical mixture that, when subjected to heat, impact, friction, detonation, or other suitable initiation, undergoes a very rapid chemical change with the evolution of large volumes of highly heated gases which exert pressures in the surrounding medium. The term applies to high explosives, propellants, and pyrotechnics... 

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