Method of charging drill holes and means for carrying out the me

Details Method of charging drill holes and means for carrying out the me Method of charging drill holes and means for carrying out the me

1975-12-23

1977-08-09

Brown, David H.

Ammunition and explosive-charge making

Loading fireworks and bursting charges

Placing bursting charge in projectile

102 23, F42D 108

Patent

active

040403300

ABSTRACT:
A method and device for charging a drill hole with explosives including a stocking of thin flexible material folded up to form a bellows with an axial duct closed at one end, a charging hose inserted into the duct on which the bellows slides, and a protecting sleeve at least partially enclosing the bellows so that upon charging of the hose the bellows is straightened out fold by fold and the bellows glides on the hose out of the drill hole.
In a second embodiment the protecting sleeve slides on the charging hose and the stocking is connected to the lower end of the sleeve, from there folded upon itself to form a bellows extending upwardly around the sleeve and being folded upon itself around the folded up portion and around the lower end of the charging hose and being closed at its lower end so that upon charging of the drill hole through the charging hose the stocking and sleeve slide on the hose out of the drill hole.

REFERENCES:
patent: 2745346 (1956-05-01), Aitchison et al.
patent: 2879149 (1959-03-01), Brown
patent: 2903969 (1959-09-01), Kolbe
patent: 3064572 (1962-11-01), Aitchison
patent: 3188906 (1965-06-01), Beck
patent: 3199399 (1965-08-01), Gardner
patent: 3696703 (1972-10-01), Fox

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