DESCRIPTION. The igniter consists of a thin aluminum alloy foil drum containing a glass ampoule of sulphuric acid and a white powdered flash composition containing naphthale-ne. (See fig. 276.) The drum is crimped to facilitate crushing from vertical pressure. The glass ampoule is fixed to the top of the drum with pitch. A waterproof paper disk confi-nes the flash composition powder in the igniter and prevents moisture from entering. The drum is secured to a brass base by crimping and a rubberized washer is placed around the threaded portion of this base. The thread is standard and will fit any German booby trap or demolition device.

OPERATION. When pressure is applied, the foil drum is dented and the ampoule is bro-ken. The sulphuric acid contained in the ampoule mixes with the powdered flash compo-sition and the flash resulting from the chemical reaction fires the detonator.

EMPLOYMENT. This igniter has been used principally with the antipersonnel "Pot" mine, but is adaptable for use with any type of German booby trap or demolition device.

Figure 276 – Buck Igniter – Chemical Pressure