Part 2 - Pistols, Fuzes, and Detonators; Chapter 3: Nose Fuzes No. 846 Mk I and No. 879 Mk I (Service)Part 2 - Pistols, Fuzes, and Detonators; Chapter 3: Nose Fuze No. 848 Mks I - V (Service)
BRITISH EXPLOSIVE ORDNANCE
Part 2 - Chapter 3
Fuzes

Tail Fuze No. 847 Mk I (Service)
Data
Bombs used in A./T. 9-lb. Mk I
Action Instantaneous on impact
Armed condition When safety tape and safety pin are removed
Fuze used with None
Body diameter 1.25 in.
Over-all length 2.875 in.

Description: The fuze body houses a striker, a spring, and a 10-grain percussion de-tonator. The striker is held by the action of the spring against a pin riveted in the fuze body. A slot is provided in the striker for this pin.

A safety pin passes through the striker and the fuze body. It is attached to a safety tape, which is wound around the fuze body and held in position by a rubber band. Secu-red to the fuze body is a sleeve, closed by a diaphragm. This sleeve houses a perforated No. 6 C.E. pellet. A booster detonator is housed in the C.E. pellet. Fixed to the fuze body is a screw-threaded fuze cap, to be screwed onto the locator in the bomb when the lat-ter is fuzed.

Functioning: When the fuzed bomb is dropped from an airplane, the safety tape, which is loosened during the fuzing of the bomb, unwinds and withdraws the safety pin from the fuze. On impact of the bomb with the target, the striker overcomes the resis-tance of the spring and fires the detonator. The percussion detonator fires the booster detonator, which, in turn, fires the C.E. pellet, and detonates the bomb.

Figure 158 - Tail Fuze No. 847 Mk I

Part 2 - Pistols, Fuzes, and Detonators; Chapter 3: Nose Fuzes No. 846 Mk I and No. 879 Mk I (Service)Part 2 - Pistols, Fuzes, and Detonators; Chapter 3: Nose Fuze No. 848 Mks I - V (Service)