Bombs Used in: Mk. AB 70 container to ignite 2 of the 3 candle units housed in the con-tainer. Can be used in any H.E. bomb with standard fuze pocket of the flying bomb as a delay fuze in normal operation.

Color: Bronzed grey.

Material: Mazak, brass and steel.

Possible Actions: Time delay – 0 to 3 minutes setting with ± 10% accuracy. Recovered with 10- and 20-minute settings.

Arming Times: Immediately in withdrawal of safety pin.

Principal Markings: 67/V.

Secondary Markings: eov; 20 (delay setting in minutes).

DESCRIPTION. The 67/V is a 67 fuze which has been modified and encased in a fuze body that fits the standard German fuze pocket. The two main parts of the 67/V fuze are the modified 67 fuze and the external fuze body. The 67 fuze has been modified ex-ternally so that it will fit into the upper part of the fuze body. A circular boss, which has been machined centrally to accommodate the hollow arming rod and its spring, is swea-ted to the square boss on the upper surface of the fuze head. The arming rod is interpo-sed in the path of the balance wheel stop lever, thereby preventing the clockwork from functioning. The arming rod, which is spring loaded upward, is held in the down position (safe) by the longer arm of the L-shaped arming rod detent. This detent is in turn under pressure of a spring which tends to force it toward the outside of the body. The arming rod detent is prevented from moving outward and releasing the arming rod by the safety pin, which passes through a hole in its longer arm and extends down through the hollow arming rod. (See fig. 158.)

The external fuze body is comprised of an upper and a lower section. The upper body is formed with the normal flange and locating pin. An externally threaded boss is positioned above the flange. The boss accepts the transit cap. The head of the body has been un-dercut to accommodate the safety pin plate while the upstand is spun over to secure the retaining plate in posi-tion. Four reinforcing buttresses are equally spaced around the internal wall of the body and form a seating for the head of the 67 fuze.

OPERATION. On withdrawal of the safety pin, the arming rod detent spring forces the detent outward in its slot freeing the arming rod. The arming rod spring then forces the arming rod upward, disengaging it from the balance wheel stop lever. The stop lever is forced to rotate clear of the balance wheel. The remainder of the operation is the same as that of the 67 fuze.

REMARKS. Eight indentations on the upper surface of the inner housing provide a posi-tive means of identifying this fuze when the safety pin has been withdrawn, and distin-guishes it from the VZ (80), (80) A and Z 17 Bm, which are similar to it in shape.

The delay time in minutes for each fuze is stamped in the outer wall of the fuze body beneath the locating pin and is repeated on the body of the 67 fuze and the mainspring casing.

Figure 158 – 67/V Mechanical Clockwork Time Fuze