Description
This is an athwartship fuze, and is assembled in three subassemblies: pistol, booster, and booster extender. The pistol is marked for the depth at which it is set and contains the firing mechanism and the detonator sliders. The desired depth setting is made by inserting in the proper firing-pin spring and auxiliary spring if necessary, with settings of 25, 50, 75, 100, or 125 feet possible. The following table shows the springs to use for the various depth settings:
Depth - Spring Color
25 feet - Yellow
50 feet - Black
75 feet - Black and green
100 feet - Yellow and red
125 feet - Black and red
The yellow and black springs, as selected, actuate the firing pin and in addition, serve a depth controlling purpose. Green and red springs arc auxiliary depth-control springs and do not actuate the firing pin. The booster extender fits into the opposite end of the transverse tube in the depth bomb.
If the booster extender fails to function properly and force the slider aligner over the primer and detonator sliders, the fuze cannot function. The slider aligner which holds them in the armed position is prevented from returning to the unarmed position by the locking slide, which locks after the locking balls are forced out from the spindle in the extender.
Functioning
No information about functioning.
Hazardous Components
No information about hazardous components.
See Also
Nothing else to see.
Source(s)
OP 1664, Volume 2 - US Explosive Ordnance (1947)
USNBD - Bombs and Fuzes, Pyrotechnics (1945)
TM 9-1904, Ammunition Inspection Guide (1944)
