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Smoke Hand Grenade, W.P., No. 77 Mb I and II (Service) |
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Filler and Weight | ||
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| White phosphorus, | |||
| Body and Overall Weight | |||
| NA, 13.5 oz | |||
| Color | |||
| Green | |||
| Type of Round, DODIC | |||
| Smoke Hand Grenade,, NA |
| Description: |
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| The tin-plate body is cylindrical in shape except near the base, which is in the form of a truncated cone. The coned portion has a fiat base in which the filling hole is formed. The hole is closed by a soldered lid. The tinplate closing arrangement at the head of the body includes a threaded socket with a central pocket for the detonator. The socket, receives the housing for the attachment of the fuse. The tinplate housing serves as an adapter for the attachment of the fuze to the body, and is in the form of a cap with a knurled periphery and a socket. The socket has a central hole and is threaded to engage with the socket in the body. |
| Use: |
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| The tin-plate body is cylindrical in shape except near the base, which is in the form of a truncated cone. |
| Functioning: |
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| The housing, together with the fuze, is removed by unscrewing the housings and the detonator is inserted in the pocket with the open end towards the fuze. The adhesive tape is then removed and the safety cap unscrewed in one-half turn. After the cap is removed, the tape must lie held in place by the forefinger and thumb. When thrown, the weight on the end of the tape causes the tape to unwind and pull out the safety pin. Only the creep spring is now hold¬ing the striker away from the primer cap. On impact, the striker is forced into the primer cap, which initiates the detonator and explodes the grenade, scattering the white phosphorus. The white phosphorus ignites spontaneously on contact with air, causing a heavy white smoke screen. The small fragments of phos¬phorous are of an incendiary nature. |
| Munition Components: |
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| Data Source: |
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| OP 1665 Explosive Ordnance British |
| Munitions Tech Data Sheet: |
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