GB527742A - Improvements in or relating to electric blasting initiators - Google Patents
Improvements in or relating to electric blasting initiatorsInfo
- Publication number
- GB527742A GB527742A GB1184139A GB1184139A GB527742A GB 527742 A GB527742 A GB 527742A GB 1184139 A GB1184139 A GB 1184139A GB 1184139 A GB1184139 A GB 1184139A GB 527742 A GB527742 A GB 527742A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- crimping
- blade
- plug
- relating
- 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
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
- F42B3/103—Mounting initiator heads in initiators; Sealing-plugs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
527,742. Blasting detonators; stamping. DU PONT DE NEMOURS & CO., E.I., HANDFORTH, S. L., and JOHNSON, C. R. April 19, 1939, No. 11841. [Class 9 (i)] [Also in Group XXII] A method of making electric detonators comprises subjecting a cold plug 14 of thermoplastic resin, previously formed about the leading wires 15, to a heating operation sufficient to soften the peripheral portion, and then inserting the plug in the charged detonator tube to the required position and crimping the tube thereon. The crimping apparatus comprises two blades 1, lb slidable through anchoring blocks 10, through which is a central hole 12 to receive the detonator tube. Each blade has an aperture 3 from which lead slots 6, 7 provided with crimping edges 8. On inserting the tube in the opening 12 and moving the blade, the slotted portions move past the tube and form the crimps 13, 13a.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1184139A GB527742A (en) | 1939-04-19 | 1939-04-19 | Improvements in or relating to electric blasting initiators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1184139A GB527742A (en) | 1939-04-19 | 1939-04-19 | Improvements in or relating to electric blasting initiators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB527742A true GB527742A (en) | 1940-10-15 |
Family
ID=9993667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1184139A Expired GB527742A (en) | 1939-04-19 | 1939-04-19 | Improvements in or relating to electric blasting initiators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB527742A (en) |
-
1939
- 1939-04-19 GB GB1184139A patent/GB527742A/en not_active Expired
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