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GB956023A - Improvements in or relating to detonators - Google Patents

Improvements in or relating to detonators

Info

Publication number
GB956023A
GB956023A GB38053/61A GB3805361A GB956023A GB 956023 A GB956023 A GB 956023A GB 38053/61 A GB38053/61 A GB 38053/61A GB 3805361 A GB3805361 A GB 3805361A GB 956023 A GB956023 A GB 956023A
Authority
GB
United Kingdom
Prior art keywords
composition
fuzehead
constriction
valve member
tube
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
GB38053/61A
Inventor
Owen Allen Gurton
Alexander Mclellan Yuill
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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
Priority to BE624024D priority Critical patent/BE624024A/xx
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB38053/61A priority patent/GB956023A/en
Priority to US232842A priority patent/US3162122A/en
Priority to FR913299A priority patent/FR1343802A/en
Publication of GB956023A publication Critical patent/GB956023A/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
    • F42B3/12—Bridge initiators
    • 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)

Abstract

956,023. Electric detonators. IMPERIAL CHEMICAL INDUSTRIES Ltd. Oct. 24, 1962 [Oct. 24, 1961], No. 38053/61. Heading F3A. A detonator comprises a highly compressed column 10 of secondary initiating explosive housed in a thickwalled tube 2 and spaced from a less compressed charge 6 of the secondary initiating explosive as in Specification 902, 643. and is provided with sealing means which allows ignition of the column 10 and after ignition closes the tube 2 to prevent escape of the gases generated. The sealing means may be a valve member 9, which is embedded in a fast-burning composition 8 extending into a constriction 3 adjacent an electric fuzehead 11 held in the outer casing 1 of the detonator by a neoprene plug 12. Pentaerythritol tetranitrate is used for the charges 10 and 6, as well as for a loose charge 7 filling the space between them. The bridge wire of the fuzehead is coated with a composition comprising lead mononitro resorcinol and cerium, which is ignited on passage of a current of 1 amp. for <SP>1</SP>/ 50 sec. On ignition of the composition 8, the valve member 9 is freed and forced back by the gases against the constriction 3. The valve member may be spherical or frusto-conical. In Fig. 4, member 9 is replaced by a delay composition 19, which on burning forms a plug of slag to seal the constriction. A delay composition 15, Fig. 3, may be placed between the fuzehead 11 and the tube 2. The fuzehead may be high or low tension or replaced by safety fuze. Aluminium powder may be incorporated in charges 10 and 6.
GB38053/61A 1961-10-24 1961-10-24 Improvements in or relating to detonators Expired GB956023A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE624024D BE624024A (en) 1961-10-24
GB38053/61A GB956023A (en) 1961-10-24 1961-10-24 Improvements in or relating to detonators
US232842A US3162122A (en) 1961-10-24 1962-10-24 Self-pressurizing detonators
FR913299A FR1343802A (en) 1961-10-24 1962-10-24 Advanced detonators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38053/61A GB956023A (en) 1961-10-24 1961-10-24 Improvements in or relating to detonators

Publications (1)

Publication Number Publication Date
GB956023A true GB956023A (en) 1964-04-22

Family

ID=10400844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38053/61A Expired GB956023A (en) 1961-10-24 1961-10-24 Improvements in or relating to detonators

Country Status (3)

Country Link
US (1) US3162122A (en)
BE (1) BE624024A (en)
GB (1) GB956023A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2825742A1 (en) * 1978-06-12 1979-12-13 Dynamit Nobel Ag EXPLOSIVE MOMENT
DE2922351A1 (en) * 1978-06-12 1980-12-04 Dynamit Nobel Ag Ignition system for explosive charges - has ignition loops, with each alternate loop housing charge with plug inside, for subsequent charge firing

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1796082B1 (en) * 1968-08-28 1971-12-09 Wasagchemie Ag Detonator for the point-like initiation of explosive charges
US5747722A (en) * 1996-01-11 1998-05-05 The Ensign-Bickford Company Detonators having multiple-line input leads
DE102020129200A1 (en) * 2020-11-05 2022-05-05 Rheinmetall Waffe Munition Gmbh pyrotechnic item

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US831947A (en) * 1905-04-15 1906-09-25 Joseph W Graeme Priming device.
US2402235A (en) * 1940-04-06 1946-06-18 Du Pont Blasting initiator
BE516956A (en) * 1952-03-01
US2981186A (en) * 1954-09-15 1961-04-25 Richard H F Stresau Electric detonator
US3062143A (en) * 1959-11-02 1962-11-06 Armour Res Found Detonator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2825742A1 (en) * 1978-06-12 1979-12-13 Dynamit Nobel Ag EXPLOSIVE MOMENT
DE2922351A1 (en) * 1978-06-12 1980-12-04 Dynamit Nobel Ag Ignition system for explosive charges - has ignition loops, with each alternate loop housing charge with plug inside, for subsequent charge firing

Also Published As

Publication number Publication date
US3162122A (en) 1964-12-22
BE624024A (en)

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