DESCRIPTION. The (41) fuze is a small clockwork type fuze which threads into the SD- 2 butterfly bomb. (See fig. 131.) It has two possible operational actions: aerial burst or impact. The fuze is armed through action of the drogue vanes which turn as the bomb desends, threading the arming spindle out of the path of the release arm. When the bomb are released from the container, the drogue vanes rotate causing the arming spindle to thread out of the path of the release arm.

OPERATION. The fuze may be set for air burst ("Zeit") or impact ("AZ"). If set on "Zeit", the setting button (12) depresses the inertia pellet (4). This allows the stop arm (5), re-lease arm (8), and release cam (6) to rotate clockwise until the slot in the release cam (6) is presented to the striker (9). The striker is then free to move into the detonator.

If the fuze is set to function on impact the setting screw is turned to "AZ" and the fuze functions as follows: Pressure of spring laoded striker (9) on release cam (6) turns relea-se arm (8) clockwise through gear train (1) until stop arm (5) bears against spring held inertia pellet (4). On impact the inertia pellet (4) falls from the path of the stop arm (5) allowing it to continue in a clockwise direction until the groove in the release cam (6) is presented to the striker. The striker (9) is then free to move into the detonator.

REMARKS. The fuze is screwed into the bomb.

Figure 131 – (41) Mechanical Clockwork Fuze