Ammunition and explosive-charge making – Loading fireworks and bursting charges – Placing bursting charge in projectile
Patent
1978-01-03
1979-01-09
Brown, David H.
Ammunition and explosive-charge making
Loading fireworks and bursting charges
Placing bursting charge in projectile
102 23, F42D 108
Patent
active
041332474
ABSTRACT:
A method of charging a borehole with at least first and second separate sections of explosive material, which method comprises the steps of providing a detonating cord extending into the borehole, providing a first primer on a first carrier having a time delay connection between the cord and the first primer, this time delay having a first selected value, providing a second primer on a second carrier having a time delay connection between a cord and the second primer, the time delay of the second carrier having a second selected value different from the first selected value, sliding the first carrier and primer along the cord and into detonation association with the first section of explosive material and sliding the second carrier and primer along the same cord to detonation association with the second section of explosive material. Also the carrier for use in a method as described above which carrier includes means for holding the primer, means for slidably securing the carrier with respect to the detonating cord whereby the carrier can move freely and longitudinally along the cord, and means for supporting on the carrier an elongation detonation element extending in a generally linear path from the extending cord to the primer thereon.
REFERENCES:
patent: 3256814 (1966-06-01), Kruppenbach et al.
patent: 3288065 (1966-11-01), Tousley
patent: 3431851 (1969-03-01), Kern et al.
patent: 3683809 (1972-08-01), Burkle
patent: 3709149 (1973-01-01), Driscoll
patent: 3713384 (1973-01-01), Turnbull
patent: 4060033 (1977-11-01), Postupack et al.
patent: 4060034 (1977-11-01), Bowman et al.
Calder, Jr. Brooke J.
Childs David L.
Lyons Donald W.
Prescott Roger N.
Austin Powder Company
Brown David H.
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