GB821586A - Electric detonators - Google Patents

Electric detonators

Info

Publication number
GB821586A
GB821586A GB18544/57A GB1854457A GB821586A GB 821586 A GB821586 A GB 821586A GB 18544/57 A GB18544/57 A GB 18544/57A GB 1854457 A GB1854457 A GB 1854457A GB 821586 A GB821586 A GB 821586A
Authority
GB
United Kingdom
Prior art keywords
explosive
conducting
rod
tube
june
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
Application number
GB18544/57A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nobel Bozel SA
Original Assignee
Nobel Bozel SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nobel Bozel SA filed Critical Nobel Bozel SA
Publication of GB821586A publication Critical patent/GB821586A/en
Expired legal-status Critical Current

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
    • F42B3/195—Manufacture
    • F42B3/198—Manufacture of electric initiator heads e.g., testing, machines
    • 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
    • F42B3/124—Bridge initiators characterised by the configuration or material of the bridge
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Air Bags (AREA)

Abstract

821,586. Blasting detonators and fuzes; explosive compositions. NOBEL-BOZEL. June 12, 1957 [June 16, 1956], No. 18544/57. Classes 9(1) and 9(2) An electric detonator comprises a tube 1 of conducting metal e.g. Cu, closed by an insulating plug 3 through which ex- tends a conducting rod 4 e.g. of brass, the rod and tube constituting electrodes to which leads 5, 6 are connected. The rod 4 is embedded in the explosive composition 7 filling the tube, the explosive being rendered conducting by the inclusion of lamp black, graphite, metal powders or pigments such as bronze or aluminium. To obtain the explosive a 40% aqueous solution of hydrazine hydrate may be mixed with a 30% equeous solution of nickel nitrate. The resultant precipitate is then dehydrated and washed with methanol or ethanol and after drying is powdered before mixing with the conducting material. In an example 70 parts by weight of the composition are mixed with 30 parts of Al flake. In a modification, a cylindrical cavity is formed in a plastic dynamite and filled with the pulverulent electrically conducting explosive. Two brass blades separated by a distance piece of insulating material and welded to electric leads are then embedded in the explosive filling. The hydrazine hydrate may be replaced by semi-carhazide or oxyamines.
GB18544/57A 1956-06-16 1957-06-12 Electric detonators Expired GB821586A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1084183X 1956-06-16

Publications (1)

Publication Number Publication Date
GB821586A true GB821586A (en) 1959-10-07

Family

ID=9611487

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18544/57A Expired GB821586A (en) 1956-06-16 1957-06-12 Electric detonators

Country Status (4)

Country Link
BE (1) BE558176A (en)
DE (1) DE1084183B (en)
FR (1) FR1152383A (en)
GB (1) GB821586A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070970A (en) * 1975-05-14 1978-01-31 The Secretary Of State For Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain & Northern Ireland Electro-explosive igniters
US5027707A (en) * 1989-05-08 1991-07-02 Olin Corporation Electric primer with reduced RF and ESD hazard
EP1434025A1 (en) * 2002-12-27 2004-06-30 Takata Corporation Initiator and gas generator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL110257C (en) * 1959-05-04
NL284467A (en) * 1961-10-24

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE214705C (en) *
AT35120B (en) * 1905-05-04 1908-11-10 Wilhelm Venier Electric detonator.
FR16277E (en) * 1911-07-21 1912-12-24 Jean Sou Electric primer system for mines
AT82125B (en) * 1911-07-21 1920-12-27 Jean Sou Jean Sou Electric mine detonator. Electric mine detonator.
GB578300A (en) * 1942-06-29 1946-06-24 Cecil Robert Lovett Hall Improvements in or relating to high tension electric fuzeheads
BE514064A (en) * 1951-09-15
BE519098A (en) * 1952-07-26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070970A (en) * 1975-05-14 1978-01-31 The Secretary Of State For Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain & Northern Ireland Electro-explosive igniters
US5027707A (en) * 1989-05-08 1991-07-02 Olin Corporation Electric primer with reduced RF and ESD hazard
EP1434025A1 (en) * 2002-12-27 2004-06-30 Takata Corporation Initiator and gas generator

Also Published As

Publication number Publication date
BE558176A (en)
FR1152383A (en) 1958-02-14
DE1084183B (en) 1960-06-23

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