GB933742A - Slow burning delay device - Google Patents
Slow burning delay deviceInfo
- Publication number
- GB933742A GB933742A GB4210261A GB4210261A GB933742A GB 933742 A GB933742 A GB 933742A GB 4210261 A GB4210261 A GB 4210261A GB 4210261 A GB4210261 A GB 4210261A GB 933742 A GB933742 A GB 933742A
- Authority
- GB
- United Kingdom
- Prior art keywords
- composition
- weight
- parts
- delay
- burning
- 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
- 239000000203 mixture Substances 0.000 abstract 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 6
- 229910052742 iron Inorganic materials 0.000 abstract 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract 2
- 239000005864 Sulphur Substances 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 150000001540 azides Chemical class 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 2
- 239000002360 explosive Substances 0.000 abstract 2
- 239000002245 particle Substances 0.000 abstract 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract 1
- TZRXHJWUDPFEEY-UHFFFAOYSA-N Pentaerythritol Tetranitrate Chemical compound [O-][N+](=O)OCC(CO[N+]([O-])=O)(CO[N+]([O-])=O)CO[N+]([O-])=O TZRXHJWUDPFEEY-UHFFFAOYSA-N 0.000 abstract 1
- 239000000026 Pentaerythritol tetranitrate Substances 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- 239000003701 inert diluent Substances 0.000 abstract 1
- 239000011872 intimate mixture Substances 0.000 abstract 1
- WETZJIOEDGMBMA-UHFFFAOYSA-L lead styphnate Chemical compound [Pb+2].[O-]C1=C([N+]([O-])=O)C=C([N+]([O-])=O)C([O-])=C1[N+]([O-])=O WETZJIOEDGMBMA-UHFFFAOYSA-L 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 229960004321 pentaerithrityl tetranitrate Drugs 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 239000000454 talc Substances 0.000 abstract 1
- 229910052623 talc Inorganic materials 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
- F42B3/16—Pyrotechnic delay initiators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
933,742. Detonators and delay compositions therefor. CANADIAN INDUSTRIES Ltd. Nov. 24, 1961 [Dec. 9, 1960], No. 42102/61. Class 9 (1). A delay device for a detonator comprises a slow-burning composition of an intimate mixture of 60-85 parts by weight of finely divided iron and 40- 15 parts by weight of powdered sulphur interposed between an explosive charge and an ignition means. In the embodiment described an electric delay detonator comprises a charge 4 of the delay composition, a primer 3 of lead azide or a mixture of lead azide and lead styphnate and an explosive charge 2 which may be of pentaerythritol tetranitrate. An air gap 10 separates the delay composition from a plastics cup 7 containing an ignition composition 6 and a bridge wire 5. In a modification of this embodiment the air gap 10 and cup 7 are dispensed with and an ignition composition comprising 98 parts by weight of red lead and 2 parts by parts by weight of boron is directly embedded in the delay composition. According to the invention, speed of burning of the composition largely depends on the proportions by weight and the particle sizes of the constituents, the latter being conveniently expressed in terms of specific surface (cm<SP>2</SP>/g). In a preferred form the composition comprises 65-75 parts by weight of iron and 35-25 parts by weight of sulphur, the iron having a specific surface of less than 1000 cm<SP>2</SP>/g. The burning rate may be reduced by the addition of an inert diluent such as finely divided silica, talc or titania. Tables of results showing variation of burning speed with proportions, particle size. and bulk density of constituents are given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA812758 | 1960-12-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB933742A true GB933742A (en) | 1963-08-14 |
Family
ID=4141267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4210261A Expired GB933742A (en) | 1960-12-09 | 1961-11-24 | Slow burning delay device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB933742A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063942A2 (en) * | 1981-04-27 | 1982-11-03 | E.I. Du Pont De Nemours And Company | Delay detonator |
| EP0324371A2 (en) * | 1988-01-09 | 1989-07-19 | Dynamit Nobel Aktiengesellschaft | Initiator having a long delay |
| TR23769A (en) * | 1989-11-20 | 1990-09-12 | Baykal Makina San Ve Tic A S | HYDRO-MECHANICAL BALANCING SYSTEM WITH MECHANICAL STOP AND REDUEKTOER THIN ADJUSTMENT CONTROL IN HYDRAULIC ABKANT PRESSES |
| EP0491530A2 (en) * | 1990-12-16 | 1992-06-24 | Israel Military Industries Ltd. | Delay detonator |
| US6164208A (en) * | 1998-07-14 | 2000-12-26 | Chung Shan Institute Of Science & Technology | Igniter for vehicle airbag inflator |
-
1961
- 1961-11-24 GB GB4210261A patent/GB933742A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0063942A2 (en) * | 1981-04-27 | 1982-11-03 | E.I. Du Pont De Nemours And Company | Delay detonator |
| EP0063942A3 (en) * | 1981-04-27 | 1983-03-16 | E.I. Du Pont De Nemours And Company | Delay detonator |
| EP0324371A2 (en) * | 1988-01-09 | 1989-07-19 | Dynamit Nobel Aktiengesellschaft | Initiator having a long delay |
| DE3800455A1 (en) * | 1988-01-09 | 1989-07-20 | Dynamit Nobel Ag | IGNITION ELEMENT, PREFERABLY WITH A LONG DELAY TIME |
| EP0324371A3 (en) * | 1988-01-09 | 1989-11-02 | Dynamit Nobel Aktiengesellschaft | Initiator having a long delay |
| TR23769A (en) * | 1989-11-20 | 1990-09-12 | Baykal Makina San Ve Tic A S | HYDRO-MECHANICAL BALANCING SYSTEM WITH MECHANICAL STOP AND REDUEKTOER THIN ADJUSTMENT CONTROL IN HYDRAULIC ABKANT PRESSES |
| EP0491530A2 (en) * | 1990-12-16 | 1992-06-24 | Israel Military Industries Ltd. | Delay detonator |
| EP0491530A3 (en) * | 1990-12-16 | 1992-12-30 | Israel Military Industries Ltd. | Delay detonator |
| US6164208A (en) * | 1998-07-14 | 2000-12-26 | Chung Shan Institute Of Science & Technology | Igniter for vehicle airbag inflator |
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