GB398762A - Improvements in or relating to safety devices for electric blasting detonators - Google Patents
Improvements in or relating to safety devices for electric blasting detonatorsInfo
- Publication number
- GB398762A GB398762A GB10721/33A GB1072133A GB398762A GB 398762 A GB398762 A GB 398762A GB 10721/33 A GB10721/33 A GB 10721/33A GB 1072133 A GB1072133 A GB 1072133A GB 398762 A GB398762 A GB 398762A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leads
- detonators
- short
- relating
- electric blasting
- 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
- 238000005422 blasting Methods 0.000 title 1
- 239000002184 metal Substances 0.000 abstract 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/18—Safety initiators resistant to premature firing by static electricity or stray currents
- F42B3/182—Safety initiators resistant to premature firing by static electricity or stray currents having shunting means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/10—Initiators therefor
- F42B3/18—Safety initiators resistant to premature firing by static electricity or stray currents
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
Abstract
398,762. Blasting-detonators. WILLIAMS, J. T. C. and TOWNSEND, R. J., Arcadiß, Pennsylvania, U.S.A. April 10, 1933, No. 10721. Convention date, July 12, 1932. [Class 9 (i).] Relates to electric blasting-detonators in which a safety metal member short-circuits the leads and is adapted to be pulled from a distance to break the short-circuit before the. detonator is fired. According to the invention, the shortcircuiting member 5, as shown in the Figure, is connected by a flexible element 10 to a point 11 of the leads which leaves a slack part 13 in the leads, enabling the short-circuit to be broken by a pull on the ends of the leads. The member 5 may be spot-welded to one lead and softsoldered to the other ; and a flange 6 on the member may have an eye for the attachment of a hook 12 at the end of the flexible element 10.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US622166A US1897685A (en) | 1932-07-12 | 1932-07-12 | Detonator safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB398762A true GB398762A (en) | 1933-09-21 |
Family
ID=24493161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10721/33A Expired GB398762A (en) | 1932-07-12 | 1933-04-10 | Improvements in or relating to safety devices for electric blasting detonators |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1897685A (en) |
| BE (1) | BE395918A (en) |
| FR (1) | FR754731A (en) |
| GB (1) | GB398762A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2633800A (en) * | 1949-08-20 | 1953-04-07 | Olin Ind Inc | Blasting cap assembly |
| US2704032A (en) * | 1951-01-30 | 1955-03-15 | Maruschak Nick | Safety mine shooting devices |
| US5129322A (en) * | 1990-05-14 | 1992-07-14 | Jet Research Center, Inc. | Explosive tubing cutter and method of assembly |
-
1932
- 1932-07-12 US US622166A patent/US1897685A/en not_active Expired - Lifetime
-
1933
- 1933-04-10 GB GB10721/33A patent/GB398762A/en not_active Expired
- 1933-04-25 FR FR754731D patent/FR754731A/en not_active Expired
- 1933-04-26 BE BE395918D patent/BE395918A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US1897685A (en) | 1933-02-14 |
| BE395918A (en) | 1933-05-31 |
| FR754731A (en) | 1933-11-13 |
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