GB728598A - Improvements in or relating to the art of delay electric firing of blasting explosive charges and appliances suitable for use in delay electric-firing circuits for such charges - Google Patents

Improvements in or relating to the art of delay electric firing of blasting explosive charges and appliances suitable for use in delay electric-firing circuits for such charges

Info

Publication number
GB728598A
GB728598A GB1283252A GB1283252A GB728598A GB 728598 A GB728598 A GB 728598A GB 1283252 A GB1283252 A GB 1283252A GB 1283252 A GB1283252 A GB 1283252A GB 728598 A GB728598 A GB 728598A
Authority
GB
United Kingdom
Prior art keywords
firing
charges
delay electric
contacts
diaphragm
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
GB1283252A
Inventor
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 GB1283252A priority Critical patent/GB728598A/en
Priority to ES0209407A priority patent/ES209407A1/en
Priority to FR1077480D priority patent/FR1077480A/en
Priority to DEI7271A priority patent/DE1001938B/en
Publication of GB728598A publication Critical patent/GB728598A/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
    • F42D1/06—Relative timing of multiple charges
    • 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
    • F42B3/006—Explosive bolts; Explosive actuators
    • 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
    • F42D1/055—Electric circuits for blasting specially adapted for firing multiple charges with a time delay
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/004—Closing switches

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Elimination Of Static Electricity (AREA)
  • Air Bags (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)

Abstract

728,598. Actuation of switches. IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 9, 1953 [May 21, 1952], No. 12832/52. Class 38 (5) [Also in Group XXI] An electrically actuated delay switch consists of a closed tubular body c, having mounted in one end a pair of switch contacts t, T and in the other end a fusehead f formed by a resistance wire coated with a combustible material. The combustible material is ignited on the passage of an electric current through the resistance wire, and the hot gases so generated cause the metal diaphragm d to bridge the switch contacts t, T. The body may be of a conducting material so serving as one of the contacts, whilst the diaphragm d may be replaced by a movable metal cap, in which case a vent hole is provided in the body adjacent the contacts. A delay element, comprising a plug through which extends a core of combustible material, may be interposed between the fusehead and the diaphragm.
GB1283252A 1952-05-21 1952-05-21 Improvements in or relating to the art of delay electric firing of blasting explosive charges and appliances suitable for use in delay electric-firing circuits for such charges Expired GB728598A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1283252A GB728598A (en) 1952-05-21 1952-05-21 Improvements in or relating to the art of delay electric firing of blasting explosive charges and appliances suitable for use in delay electric-firing circuits for such charges
ES0209407A ES209407A1 (en) 1952-05-21 1953-05-20 Improvements in or relating to the art of delay electric firing of blasting explosive charges and appliances suitable for use in delay electric-firing circuits for such charges
FR1077480D FR1077480A (en) 1952-05-21 1953-05-21 Delayed electric ignition process for explosive charges
DEI7271A DE1001938B (en) 1952-05-21 1953-05-21 System for ending a series of explosive shots

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1283252A GB728598A (en) 1952-05-21 1952-05-21 Improvements in or relating to the art of delay electric firing of blasting explosive charges and appliances suitable for use in delay electric-firing circuits for such charges

Publications (1)

Publication Number Publication Date
GB728598A true GB728598A (en) 1955-04-20

Family

ID=10011951

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1283252A Expired GB728598A (en) 1952-05-21 1952-05-21 Improvements in or relating to the art of delay electric firing of blasting explosive charges and appliances suitable for use in delay electric-firing circuits for such charges

Country Status (4)

Country Link
DE (1) DE1001938B (en)
ES (1) ES209407A1 (en)
FR (1) FR1077480A (en)
GB (1) GB728598A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111981919A (en) * 2020-08-16 2020-11-24 东莞市弘腾自动化智能科技有限公司 Paster bridgewire of easily igniting

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135455A (en) * 1977-02-03 1979-01-23 Tracor, Inc. Multiple payload cartridge employing single pair of electrical connections

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE429089C (en) * 1924-04-29 1926-05-18 Elek Scher Zuender G M B H Fab Procedure for dumping large series of explosive shots
DE805854C (en) * 1949-12-24 1951-05-31 Zuenderwerke Ernst Bruen G M B Electric ignition machine with time switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111981919A (en) * 2020-08-16 2020-11-24 东莞市弘腾自动化智能科技有限公司 Paster bridgewire of easily igniting

Also Published As

Publication number Publication date
ES209407A1 (en) 1954-06-16
FR1077480A (en) 1954-11-08
DE1001938B (en) 1957-01-31

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