GB716909A - Improvements in or relating to ventless delay electric initiators - Google Patents

Improvements in or relating to ventless delay electric initiators

Info

Publication number
GB716909A
GB716909A GB9935/52A GB993552A GB716909A GB 716909 A GB716909 A GB 716909A GB 9935/52 A GB9935/52 A GB 9935/52A GB 993552 A GB993552 A GB 993552A GB 716909 A GB716909 A GB 716909A
Authority
GB
United Kingdom
Prior art keywords
lead
tube
delay
layer
delay element
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
GB9935/52A
Inventor
Cecil Robert Lovett Hall
Idwal Owen Lewis
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 BE519351D priority Critical patent/BE519351A/xx
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB9935/52A priority patent/GB716909A/en
Priority to US337622A priority patent/US2773447A/en
Priority to FR1075552D priority patent/FR1075552A/en
Priority to DEI7050A priority patent/DE942319C/en
Publication of GB716909A publication Critical patent/GB716909A/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
    • F42B3/16—Pyrotechnic delay initiators

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Abstract

716,909. Blasting fuzes. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Jan. 9, 1953 [April 21, 1952], No. 9935/52. Class 9(1) A ventless short delay electric detonator comprises a copper tube 1 containing a detonating charge 2 of tetryl and a more sensitive charge 3 consisting of a mixture of aluminium, lead azide and lead styphnate. Above these charges is a delay element consisting of a delay composition 7 in a lead tube 4 with a textile covering 5 and a polythene sheath 6 having a tight fit in the tube 1. At each end of the delay element is a layer of gasless igniting composition consisting of red lead and silicon, a perforated metal cup 10 being inverted over the upper layer 9 and the upper part of the delay element to seal off the layer 9 from the space 15 above. In the space 15 is an electric fuzehead 11 carried by lead wires 13, 131 which pass through a sealing, plug 12 around which the tube 1 is crimped. The lead tubes of the delay elements may have an external diameter of 0.08 inch and internal diameter of 0.05 inch. The textile covering may be replaced by paper.
GB9935/52A 1952-04-21 1952-04-21 Improvements in or relating to ventless delay electric initiators Expired GB716909A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE519351D BE519351A (en) 1952-04-21
GB9935/52A GB716909A (en) 1952-04-21 1952-04-21 Improvements in or relating to ventless delay electric initiators
US337622A US2773447A (en) 1952-04-21 1953-02-18 Ventless delay electric initiators
FR1075552D FR1075552A (en) 1952-04-21 1953-03-09 Electric delay primers without vent
DEI7050A DE942319C (en) 1952-04-21 1953-03-22 Blowhole-free electric detonator with a short delay

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9935/52A GB716909A (en) 1952-04-21 1952-04-21 Improvements in or relating to ventless delay electric initiators

Publications (1)

Publication Number Publication Date
GB716909A true GB716909A (en) 1954-10-20

Family

ID=9881495

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9935/52A Expired GB716909A (en) 1952-04-21 1952-04-21 Improvements in or relating to ventless delay electric initiators

Country Status (5)

Country Link
US (1) US2773447A (en)
BE (1) BE519351A (en)
DE (1) DE942319C (en)
FR (1) FR1075552A (en)
GB (1) GB716909A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1076542B (en) * 1955-08-03 1960-02-25 Canadian Ind Delay ignition set
DE1137354B (en) * 1959-10-29 1962-09-27 Oregon Ets Patentverwertung Delay sleeve to accommodate a delay set for striking detonators for grenades, preferably hand grenades

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046889A (en) * 1957-02-27 1962-07-31 Shell Oil Co Seismic exploration
US2953214A (en) * 1957-02-27 1960-09-20 Shell Oil Co Seismic exploration
GB843227A (en) * 1958-02-19 1960-08-04 Ici Ltd Improvements in or relating to delay fuse elements for delay electric detonators anddelay electric detonators containing them
US3009418A (en) * 1959-04-24 1961-11-21 Hercules Powder Co Ltd Firing device
US4369708A (en) * 1979-09-21 1983-01-25 E. I. Du Pont De Nemours And Company Delay blasting cap
US4429632A (en) 1981-04-27 1984-02-07 E. I. Du Pont De Nemours & Co. Delay detonator
CN103033101B (en) * 2012-12-27 2015-06-17 雅化集团绵阳实业有限公司 Novel long-second delay electric detonator and production process thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR354364A (en) * 1905-04-21 1905-10-04 Societe Fabrik Elektrischer Zuender G. M. B. H. Electric delayed action primer
US1825224A (en) * 1930-02-28 1931-09-29 Ensignbickford Co Safety fuse
GB383650A (en) * 1931-06-24 1932-11-24 Hercules Powder Co Ltd Improvement in delay action blasting detonators and the like
US2103432A (en) * 1935-08-27 1937-12-28 Hercules Powder Co Ltd Electrical firing device
GB462000A (en) * 1935-08-29 1937-03-01 Charles Edwin Sosson Improvements in or relating to delay action detonators and fuzes and delay compositions for use therein
US2207137A (en) * 1939-01-24 1940-07-09 California Cap Company Electric blasting cap
NL67892C (en) * 1947-12-31
US2478415A (en) * 1948-05-22 1949-08-09 Du Pont Blasting initiator
US2586959A (en) * 1949-09-16 1952-02-26 Canadian Ind Delay electric blasting cap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1076542B (en) * 1955-08-03 1960-02-25 Canadian Ind Delay ignition set
DE1137354B (en) * 1959-10-29 1962-09-27 Oregon Ets Patentverwertung Delay sleeve to accommodate a delay set for striking detonators for grenades, preferably hand grenades

Also Published As

Publication number Publication date
FR1075552A (en) 1954-10-18
BE519351A (en)
DE942319C (en) 1956-05-03
US2773447A (en) 1956-12-11

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