GB744531A - Improvements in or relating to the method and apparatus for firing blasting charges with a delay period between successive detonations - Google Patents

Improvements in or relating to the method and apparatus for firing blasting charges with a delay period between successive detonations

Info

Publication number
GB744531A
GB744531A GB3019652A GB3019652A GB744531A GB 744531 A GB744531 A GB 744531A GB 3019652 A GB3019652 A GB 3019652A GB 3019652 A GB3019652 A GB 3019652A GB 744531 A GB744531 A GB 744531A
Authority
GB
United Kingdom
Prior art keywords
contacts
beads
relating
delay period
resistance wire
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
GB3019652A
Inventor
Kenneth John Brimley
James Craig Reid Cance
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
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB3019652A priority Critical patent/GB744531A/en
Publication of GB744531A publication Critical patent/GB744531A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/045—Arrangements for electric ignition
    • F42D1/05—Electric circuits for blasting

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Contacts (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

744,531. Non - contact - making relays. IMPERIAL CHEMICALS INDUSTRIES, Ltd. Oct. 7, 1953 [Nov. 28, 1952], No. 30196/52. Class 40 (4). [Also in Group XXI] An electrically-actuable delay switch comprises a container, an electric resistance wire bearing a bead 4<1> of combustible material and two switch contacts 7<1>, which are insulated from one another by another bead 81. Both beads 4<1>, 8<1> are ignited by a current in the resistance wire associated with 41 and gases generated by the beads create a conducting path between the contacts 7<1> for the passage of an electric current under the potential difference existing between the contacts. The combustible beads comprise collodion coated mixtures of mononitroresorcinate, potassium chlorate and charcoal.
GB3019652A 1952-11-28 1952-11-28 Improvements in or relating to the method and apparatus for firing blasting charges with a delay period between successive detonations Expired GB744531A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3019652A GB744531A (en) 1952-11-28 1952-11-28 Improvements in or relating to the method and apparatus for firing blasting charges with a delay period between successive detonations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3019652A GB744531A (en) 1952-11-28 1952-11-28 Improvements in or relating to the method and apparatus for firing blasting charges with a delay period between successive detonations

Publications (1)

Publication Number Publication Date
GB744531A true GB744531A (en) 1956-02-08

Family

ID=10303794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3019652A Expired GB744531A (en) 1952-11-28 1952-11-28 Improvements in or relating to the method and apparatus for firing blasting charges with a delay period between successive detonations

Country Status (1)

Country Link
GB (1) GB744531A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7946227B2 (en) 2006-04-20 2011-05-24 Detnet South Africa (Pty) Limited Detonator system
CN109780948A (en) * 2019-02-02 2019-05-21 北京凯米迈克科技有限公司 A kind of multiple igniter carrier tooling

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7946227B2 (en) 2006-04-20 2011-05-24 Detnet South Africa (Pty) Limited Detonator system
CN109780948A (en) * 2019-02-02 2019-05-21 北京凯米迈克科技有限公司 A kind of multiple igniter carrier tooling

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