GB681481A - Improvements in or relating to electric detonators and electric blasting assemblies - Google Patents
Improvements in or relating to electric detonators and electric blasting assembliesInfo
- Publication number
- GB681481A GB681481A GB6344/50A GB634450A GB681481A GB 681481 A GB681481 A GB 681481A GB 6344/50 A GB6344/50 A GB 6344/50A GB 634450 A GB634450 A GB 634450A GB 681481 A GB681481 A GB 681481A
- Authority
- GB
- United Kingdom
- Prior art keywords
- detonator
- pole
- electric
- metal casing
- casing
- 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 abstract 2
- 230000000712 assembly Effects 0.000 title 1
- 238000000429 assembly Methods 0.000 title 1
- 239000002184 metal Substances 0.000 abstract 4
- 229910052751 metal Inorganic materials 0.000 abstract 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 230000000977 initiatory effect Effects 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000000126 substance 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Air Bags (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
681,481. Blasting fuzes. IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 14, 1951 '[March 14, 1950], No. 6344/50. Class 9(i) An electric detonator is provided having a metal casing connected by an electric conductor to one pole-piece the outer surface of the casing being covered with insulating material. The detonator has a metal casing 1 closed by a plug 2 and contains secondary and primary initiating charges 3, 4 fired by a matchhead 5 on metallic pole-pieces 6 separated by an insulating layer 7. The pole-pieces are soldered to the bared ends 11, 11<SP>1</SP> of the leg wires, one bared end in each detonator being soldered to a copper strip 10 which connects a pole-piece 6 to the metal casing 1. A leg wire from each detonator leads to an insulated terminal 14, 15 connected by cables 16, 17 to an exploder 18. When the circuit is complete, current flows by way of the cable 16, leading wire 11, and matchhead 5 of the left-hand detonator through leading wire 11<SP>1</SP> to the right-hand detonator and back through the cable 17. Each metal casing 1 is covered by an insulating coating 13 of. rubberlike material, which prevents short-circuiting to earth through the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES0196911A ES196911A1 (en) | 1950-03-14 | 1951-03-08 | IMPROVEMENTS IN ELECTRIC DETONATORS AND ELECTRIC BLASTING SETS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB290587X | 1950-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB681481A true GB681481A (en) | 1952-10-22 |
Family
ID=10285533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6344/50A Expired GB681481A (en) | 1950-03-14 | 1950-03-14 | Improvements in or relating to electric detonators and electric blasting assemblies |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2741179A (en) |
| BE (1) | BE501819A (en) |
| CH (1) | CH290587A (en) |
| DE (1) | DE860324C (en) |
| FR (1) | FR1033065A (en) |
| GB (1) | GB681481A (en) |
| NL (2) | NL80499C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2802421A (en) * | 1953-11-09 | 1957-08-13 | Hercules Powder Co Ltd | Static resistant electric initiator |
| US2965033A (en) * | 1956-10-19 | 1960-12-20 | Hercules Powder Co Ltd | Blasting cap assembly |
| US2974590A (en) * | 1957-10-02 | 1961-03-14 | Hercules Powder Co Ltd | Static resistant electric initiator |
| US3100447A (en) * | 1960-08-31 | 1963-08-13 | Robert E Betts | Igniter squib |
| US3128703A (en) * | 1961-05-23 | 1964-04-14 | Du Pont | Water impervious detonator |
| JPS559301A (en) * | 1978-07-01 | 1980-01-23 | Nissan Motor | Connector for igniter |
| US4380958A (en) * | 1980-12-17 | 1983-04-26 | The United States Of America As Represented By The Secretary Of The Army | Electrostatic safe electric match |
| DE3274390D1 (en) * | 1981-06-01 | 1987-01-08 | Ici Plc | Method and apparatus for indicating a time-break on a seismic record |
| US7124688B2 (en) * | 2000-12-08 | 2006-10-24 | Special Devices, Inc. | Overmolded body for pyrotechnic initiator and method of molding same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1306510A (en) * | 1919-06-10 | Detonator | ||
| GB310364A (en) * | 1928-04-24 | 1930-04-22 | Wilhelm Eschbach | |
| US2086533A (en) * | 1935-10-30 | 1937-07-13 | Du Pont | Ignition composition |
-
0
- NL NL6900795.A patent/NL159393B/en unknown
- NL NL80499D patent/NL80499C/xx active
- BE BE501819D patent/BE501819A/xx unknown
-
1950
- 1950-03-14 GB GB6344/50A patent/GB681481A/en not_active Expired
-
1951
- 1951-02-06 US US209532A patent/US2741179A/en not_active Expired - Lifetime
- 1951-02-16 CH CH290587D patent/CH290587A/en unknown
- 1951-02-23 FR FR1033065D patent/FR1033065A/en not_active Expired
- 1951-03-15 DE DEI3892A patent/DE860324C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL159393B (en) | |
| CH290587A (en) | 1953-05-15 |
| BE501819A (en) | |
| FR1033065A (en) | 1953-07-08 |
| DE860324C (en) | 1952-12-18 |
| US2741179A (en) | 1956-04-10 |
| NL80499C (en) |
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