Description: This igniter has a brass case with a percussion cap and a nipple to which safety fuze or a nonelectric blasting cap can be attached at one end, and a small hole at the opposite end through which the knobbed head of the release pin protrudes.The firing assembly consists of a release pin and striker connected by a notched joint and surroun-ded by the firing spring. This igniter has no safety pin, but depends for its safety factor upon the fact that the firing spring is not compressed until a pull is exerted on the re-lease pin.

Employment: This igniter is used in smoke signal bombs and as an igniter for booby traps.

Operation: A pull on the cord attached to the release pin draws the release pin and a portion of the striker through the release-pin hole, compressing the striker spring. The release pin is disengaged from the striker when the notched joint connecting the two parts clears the release pin hole. The striker is then driven forward by the compressed striker spring and impinges on the primer cap.

Figure 188 – Waterproof Safety-Fuze Igniter.