Explosive stemming device

Details Explosive stemming device Explosive stemming device

1990-07-18

1992-03-03

Nelson, Peter A.

Ammunition and explosives

Blasting

Contained blasting charge

102323, 102333, F42B 300

Patent

active

050922459

ABSTRACT:
An explosive stemming device for dispensing granular material into a boree containing an explosive charge therein is disclosed as including a cylindrical member having a flexible sleeve-like liner adapted to conform to the interior thereof when filled with granular material. One end of the liner is turned around an end of the cylindrical member and secured thereto while the other end of the liner is fixed to a centrally positioned pipe whereby extracting of the member containing granular material from the borehole causes everting or turning inside out of the liner and dispensing of the material in the borehole.

REFERENCES:
patent: 119330 (1871-09-01), Dickey
patent: 2216067 (1940-09-01), Clark
patent: 2966855 (1961-01-01), Barco
patent: 4464994 (1984-08-01), Porter
patent: 4469993 (1984-08-01), Porter
patent: 4492165 (1985-01-01), Marz

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