GB546276A - Improvements in electric blasting caps - Google Patents
Improvements in electric blasting capsInfo
- Publication number
- GB546276A GB546276A GB12358/40A GB1235840A GB546276A GB 546276 A GB546276 A GB 546276A GB 12358/40 A GB12358/40 A GB 12358/40A GB 1235840 A GB1235840 A GB 1235840A GB 546276 A GB546276 A GB 546276A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cap
- solid
- mixture
- caps
- charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Air Bags (AREA)
Abstract
546,276. Blasting caps; explosives. HERCULES POWDER CO. July 30, 1940, No. 12358. Convention date, May 17. [Classes 9 (i) and 9 (ii)] A blasting cap with indirect ignition comprises a main charge and a primary charge of a mixture of lead azide with a solid auxiliary explosive such as pentaerythritoltetranitrate, nitro - mannite, T.N.T., tetryl, pentryl, hexogen, solid nitrated sugars, or solid nitrated polyhydric alcohols, so that if the cap is subjected to heating, the auxiliary explosive melts or decomposes without detonation and desensitizes the lead azide, and the cap does not explode. Such caps after misfire are often transferred with blasted material to factories or domestic stoves and cause accidents. The primary charge 3 superposed upon the main charge 2 may be fired direct or indirectly by a detonating mixture 4 of mercury fulminate, potassium chlorate, nitrostarch and charcoal placed in a cavity type plug 6 or by a match-head assembly 11, so that the detonating mixture is partially protected from external heating. Specification 470,418 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US546276XA | 1940-05-17 | 1940-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB546276A true GB546276A (en) | 1942-07-06 |
Family
ID=21992408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12358/40A Expired GB546276A (en) | 1940-05-17 | 1940-07-30 | Improvements in electric blasting caps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB546276A (en) |
-
1940
- 1940-07-30 GB GB12358/40A patent/GB546276A/en not_active Expired
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