Over-all length

Diameter of body

Width, safety pin closed

Mine used in

The head is free to rotate in the top of the main body. The cap holder has a collet at its lower end to enable a detonator to be pushed into it. A transit cap is fitted to protect the cap from dampness.

The striker is forked at the top to enable the firing cotter to be pushed home below the cross head pin. While in compression, the spring pushes against a metal washer and a packing washer.

A safety ring is pinned to the projection end of the firing cotter. In the safety po-sition this ring folds back over the head of the igniter, preventing the cotter from be-ing with-drawn. During transit, the trip cord, fixed to the loop, is wound round the body of the igniter, to prevent movement of the safety ring.

The safety ring is unfolded from the head of the igniter. The igniter is then armed. If a pull is exerted on the safety ring, the fi-ring cotter is pulled out, and the striker is free to descend onto the cap under the action of the spring.

If the pull is not exerted directly in line with the cotter, but, say, in line with the axis of the igniter, the cotter will pivot about its inner chamfered end, but will fi-nally be withdrawn through the slot in the head of the igniter.

Figure 281 – Pull Igniter Model 1939