Bombs used in

Fuze used with

Material of construction

Over-all length

Over-all length of vanes

Width of fuze body

The exterior of the fuze body is cylindrical, with the lower part pressed and threaded for assembling into the nose of the bomb. The upper part of the body encloses the height meter, gear train, electrical contacts, and central shaft with release pawl. The lower part houses the armature and its shaft. On the upper end of the shaft is mounted the clutch; at the other end, the cap is screwed in. The vanes are fastened to a spindle in a hub on top of the meter housing. A setting nut is also located on the top of the meter housing and is used to set the height meter. Two insulated wires lead from the base of the fuze to an electric detonator. One lead is connected to the cap, the other to the rod which leads to the contacts in the meter housing.

Before releasing the bomb, the setting nut is turned until the desired distance of fall (in meters) appears on the meter. When the bomb is released, the vanes are free to rotate and drive the meter through the gear train. After a fall of approximately 30 meters, the vanes have attained a velocity sufficient to rotate the armature, and the release pawl has released the spring detent in the main shaft which engages the clutch. When a reading of zero shows on the meter, the contacts almost touch; and, after a few more rotations, they meet and allow a current to flow through the leads to the electric deto-nator.

Figure 63
Type X - Electrical Time Nose Fuze