GB431950A - Safety igniter for blasting explosive cartridges or borehole charges - Google Patents
Safety igniter for blasting explosive cartridges or borehole chargesInfo
- Publication number
- GB431950A GB431950A GB10578/34A GB1057834A GB431950A GB 431950 A GB431950 A GB 431950A GB 10578/34 A GB10578/34 A GB 10578/34A GB 1057834 A GB1057834 A GB 1057834A GB 431950 A GB431950 A GB 431950A
- Authority
- GB
- United Kingdom
- Prior art keywords
- charge
- mixtures
- initiator
- blasting
- ammonium
- 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
- 239000002360 explosive Substances 0.000 title abstract 2
- 239000000203 mixture Substances 0.000 abstract 6
- 239000003999 initiator Substances 0.000 abstract 4
- 239000000126 substance Substances 0.000 abstract 4
- 239000000463 material Substances 0.000 abstract 3
- 150000003839 salts Chemical class 0.000 abstract 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 2
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 2
- 230000001590 oxidative effect Effects 0.000 abstract 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- 241000272470 Circus Species 0.000 abstract 1
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- 229920001800 Shellac Polymers 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- 235000019270 ammonium chloride Nutrition 0.000 abstract 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 abstract 1
- 150000003863 ammonium salts Chemical class 0.000 abstract 1
- 239000001166 ammonium sulphate Substances 0.000 abstract 1
- 235000011130 ammonium sulphate Nutrition 0.000 abstract 1
- 229910021538 borax Inorganic materials 0.000 abstract 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 abstract 1
- 239000003610 charcoal Substances 0.000 abstract 1
- 150000001805 chlorine compounds Chemical class 0.000 abstract 1
- 230000001427 coherent effect Effects 0.000 abstract 1
- 238000002788 crimping Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000003292 glue Substances 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 abstract 1
- ADKOXSOCTOWDOP-UHFFFAOYSA-L magnesium;aluminum;dihydroxide;trihydrate Chemical compound O.O.O.[OH-].[OH-].[Mg+2].[Al] ADKOXSOCTOWDOP-UHFFFAOYSA-L 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000012260 resinous material Substances 0.000 abstract 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 abstract 1
- 229940113147 shellac Drugs 0.000 abstract 1
- 235000013874 shellac Nutrition 0.000 abstract 1
- 239000004208 shellac Substances 0.000 abstract 1
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract 1
- 235000010288 sodium nitrite Nutrition 0.000 abstract 1
- 239000004328 sodium tetraborate Substances 0.000 abstract 1
- 235000010339 sodium tetraborate Nutrition 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 229910021653 sulphate ion Inorganic materials 0.000 abstract 1
- KNXVOGGZOFOROK-UHFFFAOYSA-N trimagnesium;dioxido(oxo)silane;hydroxy-oxido-oxosilane Chemical compound [Mg+2].[Mg+2].[Mg+2].O[Si]([O-])=O.O[Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O KNXVOGGZOFOROK-UHFFFAOYSA-N 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
- F42B3/195—Manufacture
-
- 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
- F42B3/128—Bridge initiators characterised by the composition of the pyrotechnic material
Abstract
431,950. Igniters for blasting - cartridges ; explosives. TAYLOR, J., 7, Winton Circus, YOUNG, W., 118, Argyle Road, both in Saltcoats, Ayrshire, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. April 7, 1934, No. 10578. [Classes 9 (i) and 9 (ii)] A safety igniter for non-deton. ating safety blasting cartridges or bore-hole charges comprises a charge 3 of low - temperature - reactive material and an electric initiator 6 in a container 1 having an aperture 2 at the forward end, the charge 3 being coherent and formed in such a manner as to leave a passage, for example a central passage 4, connecting at one end with the aperture 2, there being included also a screen adapted tc prevent the escape of the products of combustion of the initiator before they have been safely cooled and to offer no effective resistance to the ejection of the products of combustion of the charge 3. The initiator 6 is preferably substantially gasless in its operation as described in Specification 428,872, and is arranged with its leads 10 embedded in wax 9 in a paper tube 8 secured in the container by crimping the end 7. The screen is preferably a disc 5 between the initiator 6 and the charge 3, and may then be of metal to transmit heat for the ignition of the charge 3, or of low-temperature combustible material. In addition to or instead of the disc 5, a screen of fireproofed wax paper may be provided over the aperture 2. The charge 3 may be a single substance, or a mixture of substances, for example : (1) Ammonium dichromate ; (2) Mixtures of sodium nitrite with ammonium chloride or sulphate with or without small proportions of stabilizing substances such as sodium carbonate as described in Specification 431,935 ; (3) Mixtures of charcoal with oxidizing salts such as ammonium and other nitrates and not more than 50 per cent of cooling salts such as alkali chlorides or carbonates or ammonium salts, to which small proportions of inert materials such as china clay and French chalk may be added ; (4) Mixtures of an oxidizing salt such as potassium chlorate or nitrate with resinous materials, powdered glass, metallic oxides, and a binding agent such as glue; (5) Mixtures of black powder with a binding agent having a cooling effect such as Shellac and, if desired, borax; and (6) Any of the mixtures (3), (4) and (5) with the addition of iron filings. This safety igniter is suitable for use with the blasting-cartridge described in Spedifications 423,040, 430,258, and 431,935.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB10578/34A GB431950A (en) | 1934-04-07 | 1934-04-07 | Safety igniter for blasting explosive cartridges or borehole charges |
| US14932A US2079777A (en) | 1934-04-07 | 1935-04-05 | Safety igniter for blasting explosive devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB10578/34A GB431950A (en) | 1934-04-07 | 1934-04-07 | Safety igniter for blasting explosive cartridges or borehole charges |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB431950A true GB431950A (en) | 1935-07-18 |
Family
ID=9970415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10578/34A Expired GB431950A (en) | 1934-04-07 | 1934-04-07 | Safety igniter for blasting explosive cartridges or borehole charges |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2079777A (en) |
| GB (1) | GB431950A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012016431A1 (en) * | 2012-08-21 | 2014-02-27 | Trw Airbag Systems Gmbh | Pyrotechnic igniter useful in safety devices, preferably belt tensioner, engine bonnet stand for vehicles, comprises ignition bridge, pyrotechnic composition, which is associated with ignition bridge, and energy absorbing additive |
| GB2511401B (en) * | 2013-02-27 | 2016-06-01 | Alford Res Ltd | A wire cutting device |
| US20200103207A1 (en) * | 2013-10-21 | 2020-04-02 | Trw Airbag Systems Gmbh | Igniting unit, especially for an inflator, inflator, airbag module, vehicle safety system and method of manufacturing an igniting unit |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE514360A (en) * | 1951-11-22 | |||
| US3211097A (en) * | 1964-06-29 | 1965-10-12 | Kenneth R Foote | Pyrogen squib |
| FR3042032B1 (en) * | 2015-10-06 | 2017-12-15 | Commissariat Energie Atomique | NON-PYROTECHNIC INFLAMMATOR |
| CN107995784A (en) * | 2018-01-30 | 2018-05-04 | 成都宏明电子科大新材料有限公司 | Embedded resistors plate made of a kind of embedded resistors production method and utilization this method |
-
1934
- 1934-04-07 GB GB10578/34A patent/GB431950A/en not_active Expired
-
1935
- 1935-04-05 US US14932A patent/US2079777A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012016431A1 (en) * | 2012-08-21 | 2014-02-27 | Trw Airbag Systems Gmbh | Pyrotechnic igniter useful in safety devices, preferably belt tensioner, engine bonnet stand for vehicles, comprises ignition bridge, pyrotechnic composition, which is associated with ignition bridge, and energy absorbing additive |
| GB2511401B (en) * | 2013-02-27 | 2016-06-01 | Alford Res Ltd | A wire cutting device |
| US20200103207A1 (en) * | 2013-10-21 | 2020-04-02 | Trw Airbag Systems Gmbh | Igniting unit, especially for an inflator, inflator, airbag module, vehicle safety system and method of manufacturing an igniting unit |
| US11940255B2 (en) * | 2013-10-21 | 2024-03-26 | Trw Airbag Systems Gmbh | Igniting unit, especially for an inflator, inflator, airbag module, vehicle safety system and method of manufacturing an igniting unit |
Also Published As
| Publication number | Publication date |
|---|---|
| US2079777A (en) | 1937-05-11 |
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