GB947831A - Electrical delay blasting device - Google Patents
Electrical delay blasting deviceInfo
- Publication number
- GB947831A GB947831A GB2310762A GB2310762A GB947831A GB 947831 A GB947831 A GB 947831A GB 2310762 A GB2310762 A GB 2310762A GB 2310762 A GB2310762 A GB 2310762A GB 947831 A GB947831 A GB 947831A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lead
- composition
- leads
- delay
- piston
- 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 3
- 239000000203 mixture Substances 0.000 abstract 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052710 silicon Inorganic materials 0.000 abstract 2
- 239000010703 silicon Substances 0.000 abstract 2
- 229910000881 Cu alloy Inorganic materials 0.000 abstract 1
- 229910000640 Fe alloy Inorganic materials 0.000 abstract 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 abstract 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910001297 Zn alloy Inorganic materials 0.000 abstract 1
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical compound [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 abstract 1
- 229940083898 barium chromate Drugs 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 abstract 1
- 239000007769 metal material Substances 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 abstract 1
- 239000011669 selenium Substances 0.000 abstract 1
- 229910052711 selenium Inorganic materials 0.000 abstract 1
- GVCGWXSZNUOTDW-UHFFFAOYSA-N sulfo cyanate Chemical compound OS(=O)(=O)OC#N GVCGWXSZNUOTDW-UHFFFAOYSA-N 0.000 abstract 1
- 239000011701 zinc 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
- F42B3/12—Bridge initiators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lighters Containing Fuel (AREA)
- Fuses (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
947,831. Electric blasting devices. CANADIAN INDUSTRIES Ltd. June 15, 1962 [June 24, 1961], No. 23107/62. Heading F3A. A blasting device for closing an electrical circuit comprises a casing 1 closed at its ends by rubber plugs 2, 3, leads 4 connected by a bridgewire 5, leads 6 with bared ends 7 and an apertured electrically conducting piston 10. The bridgewire 5 is surrounded by an ignition composition 9 housed in a plastics cup 8 which ignites a delay composition 13, which may, for example, be a silicon and red lead mixture or a selenium, silicon, red lead, lead chromate and barium chromate mixture. The delay 13 ignites in turn a gas-producing composition 14, which in a preferred form is a 40: 20: 40 parts by weight mixture of ground cellulose, potassium chlorate and lead sulphocyanate, thereby driving the piston 10, hitherto wedged in the casing, into contact with the ends 7 to complete the circuit of which leads 6 form part. The piston may be made of lead, the soft alloys of copper, zinc and iron or of a conducting non-metallic material. The aperture 11 is preferably less than 0.1 cm in diameter and more than one such aperture may be provided. In a second embodiment, the delay 13 is dispensed with and the ignition composition 9 is a gas-producing composition having a preferred form as given above. Specifications 728,598 and 744,530 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA826344 | 1961-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB947831A true GB947831A (en) | 1964-01-29 |
Family
ID=4141345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2310762A Expired GB947831A (en) | 1961-06-24 | 1962-06-15 | Electrical delay blasting device |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB947831A (en) |
| SE (1) | SE307526B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2388245A1 (en) * | 1977-04-19 | 1978-11-17 | Bofors Ab | DELAY ELECTRIC IGNITER TRIP DEVICE |
-
1962
- 1962-06-15 GB GB2310762A patent/GB947831A/en not_active Expired
- 1962-06-21 SE SE697462A patent/SE307526B/xx unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2388245A1 (en) * | 1977-04-19 | 1978-11-17 | Bofors Ab | DELAY ELECTRIC IGNITER TRIP DEVICE |
Also Published As
| Publication number | Publication date |
|---|---|
| SE307526B (en) | 1969-01-07 |
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