Description
The Fuze Mk I consists of a brass fuze body, a brass cap, an upper time ring, and a lower time setting ring.
The brass nose cap has a flat top with five perforations, the center one leading to the striker recess and the remaining four leading to the recess accommodating the plunger. In this nose cap are located the striker and the striker spring. The spring is enclosed in an aluminum alloy plunger. Supporting the striker and the plunger are two brass pawls, pivoted in a pawl housing which is screwed into the bottom of the nose cap.
Pivoted in a recess in the fuze body is a safety lever, the upper arm of which intervenes between the striker and the percussion cap in the unarmed position. The lower end of the lever is rectangular in cross section and fits into a spring loaded catch. The outer end of the catch engages a recess in the time setting ring when the fuze is set on SAFE. A turning movement is imparted to the safety lever when the outer end of the catch leaves the recess in the time-setting ring, thus removing the upper lever arm from beneath the striker.
A flash channel leading to the upper time ring is located beneath the percussion cap. A second channel leads from the lower time setting ring to the charge of gunpowder in the base of the fuze. Leading from the top of the fuze body through to the base of the fuze is a third channel provided for the escape of air pressure.
Fuze No. 700 Mk II is identical to the Fuze Mk I, except that the striker, pawls, and spring are somewhat modified, and the safety lever assembly is omitted.
The Fuzes Mk I and Mk II are pyrotechnic time fuzes, designed for antiaircraft purposes.
Functioning
No information about functioning.
See Also
Nothing else to see.
Source(s)
