U.S.N.B.D. - BRITISH BOMBS AND FUZES; PYROTECHNICS; DETONATORS |
BRITISH FUZES & PISTOLS |
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BRITISH NOSE PISTOL |
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BOMBS USED IN |
F 20 lb. with parachute |
NO. 33 |
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G.P. 40 lb. with parachute | |
FUNCTIONING |
Impact; instantaneous | |
ARMED CONDITION |
When safety cap is off | |
FUZES USED WITH |
None | |
ARMING TIME |
Instantaneous with open- |
Mk I (D.A.) |
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ing of parachute |
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MAX. BODY DIAMETER |
2" |
(Service) |
OVERALL LENGTH |
2-5/8" |
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DESCRIPTION: |
The pistol consists of a body bored centrally to receive a striker and counterboard and threaded at one end to receive a screwed collar which retains a .003 in. thick cop-per shear washer on position on the bottom of the counterbore. The lower end of the body is threaded to screw into the bomb, and a tab locking device is fitted around the body above the threads to secure the pistol in the bomb. A pressure plate is threaded conto the upper end of the striker, and the shear washer is located between the bot-tom of the striker sleeve and the striker shoulder. A dome-shaped safety cap is placed over the pressure plate, retained by a circlip which has two safety stops which project through two slots in the safety cap between the pressure plate and the pistol body. The outer ends of the circlips have a slug attached, through which is inserted a safety pin to retain the circlip in position during storage and transit. Located between the pressure plate and the safety cap is a conical coiled safety cap spring. |
OPERATION: |
When the bomb is to be loaded on the plane. The arming link of the parachute is passed through the inner holes on the circlip lugs. When the bomb is released and the parachute opens, the arming link is pulled free of the circlip lugs, allowing the spring circlip to fly off. The coiled conical spring under the safety cap forces the safety cap off, arming the pistol. On impact, the pressure plate is driven inward, the striker shear-ing the thin shear washer and striking the cap in the detonator. |
REMARKS: |
(1) The striker of this pistol is of the blunt type. |
(2) Striker spindle could shear through pressure plate on impact even if circlip still in position. |
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