GB241796A - Improvements in or relating to protecting devices for electric detonators - Google Patents

Improvements in or relating to protecting devices for electric detonators

Info

Publication number
GB241796A
GB241796A GB8415/25A GB841525A GB241796A GB 241796 A GB241796 A GB 241796A GB 8415/25 A GB8415/25 A GB 8415/25A GB 841525 A GB841525 A GB 841525A GB 241796 A GB241796 A GB 241796A
Authority
GB
United Kingdom
Prior art keywords
relating
detonator
protecting devices
electric detonators
electric
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
GB8415/25A
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.)
HARRY LEE GRANT
Original Assignee
HARRY LEE GRANT
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 HARRY LEE GRANT filed Critical HARRY LEE GRANT
Publication of GB241796A publication Critical patent/GB241796A/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
    • F42B3/18—Safety initiators resistant to premature firing by static electricity or stray currents
    • F42B3/182—Safety initiators resistant to premature firing by static electricity or stray currents having shunting means
    • 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
    • F42B3/18—Safety initiators resistant to premature firing by static electricity or stray currents

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Air Bags (AREA)
  • Connector Housings Or Holding Contact Members (AREA)

Abstract

241,796. Grant, H. L. Nov. 6, 1924, [Convention date]. Blasting-detonators, electric. The bar ends 6, 7 of the electric lead-in wires 6<a>, 7a of a blasting detonator 5 are shorted by a lead plug 9 or otherwise to prevent accidental transmission of current or E.M.F. to the detonator. The lead plug 9 is pulled off when the detonator is to be used. This operation separates the wires and simultaneously cleans them.
GB8415/25A 1924-11-06 1925-03-30 Improvements in or relating to protecting devices for electric detonators Expired GB241796A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US748214A US1583922A (en) 1924-11-06 1924-11-06 Protecting device for electric detonators

Publications (1)

Publication Number Publication Date
GB241796A true GB241796A (en) 1925-10-29

Family

ID=25008491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8415/25A Expired GB241796A (en) 1924-11-06 1925-03-30 Improvements in or relating to protecting devices for electric detonators

Country Status (4)

Country Link
US (2) US1583922A (en)
DE (1) DE441795C (en)
FR (1) FR603249A (en)
GB (1) GB241796A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2555636A (en) * 2016-11-07 2018-05-09 Martin Haddon Timothy Initiator unit

Also Published As

Publication number Publication date
US1583922A (en) 1926-05-11
USRE16544E (en) 1927-02-08
FR603249A (en) 1926-04-12
DE441795C (en) 1927-03-11

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