Description
This fuze is a simple impact fuze consisting of a striker and an attached pressure plate, which is held away from the detonator by a thin aluminum shear wire. A safety cap is screwed over the head' of the fuze, and the sides of the safety cap hold a safety clip in position beneath the pressure plate of the striker. The safety clip consists of two metal segments riveted one at each end of a short strip of spring steel.
The detonator is carried in a brass detonator holder screwed into the underside of the body. The channel in the bottom of the detonator holder is stemmed with C.E. Above the holder, interposed between the detonator and the striker, is a small brass retaining disc supported on a washer of similar material.
The magazine consists of a brass cup crimped to the body of the fuze.
Fuzes No. 721 Mks II* and III differ from the Mk II only in that a solid horseshoe shaped metal safety block replaces the spring safety clip assembly.
It should be noted that an unexploded round found with the safety cap in position is by no means to be considered safe, as the safety cap is replaced after the safety clip has been removed.
Functioning
No information about functioning.
See Also
Nothing else to see.
Source(s)
