GB782305A - Delay blasting device - Google Patents

Delay blasting device

Info

Publication number
GB782305A
GB782305A GB18035/55A GB1803555A GB782305A GB 782305 A GB782305 A GB 782305A GB 18035/55 A GB18035/55 A GB 18035/55A GB 1803555 A GB1803555 A GB 1803555A GB 782305 A GB782305 A GB 782305A
Authority
GB
United Kingdom
Prior art keywords
tube
lead
delay
connected together
sheath
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
GB18035/55A
Inventor
William Forsyth
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 GB18035/55A priority Critical patent/GB782305A/en
Priority to US571739A priority patent/US2891476A/en
Priority to FR1147392D priority patent/FR1147392A/en
Priority to DEI11857A priority patent/DE1043905B/en
Publication of GB782305A publication Critical patent/GB782305A/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
    • F42B3/10—Initiators therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

782,305. Blasting devices. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Feb. 10, 1956 [June 22, 1955], No. 18035/55. Class 9(1) A delay blasting device for use with explosive charges connected together by detonating fuze cord for detonation at predetermined time intervals comprises two delay detonators each in a thin-walled sheath 1 and connected together by a shock-absorbing tube 8 as in Specification 708,422. The metal casings 2 contain a primary charge 4 of lead azide and a composition 5 consisting of lead azide, lead styphnate and aluminium powder on which is a thick-walled metal tube 6 housing a delay charge 7 of lead dinitroresorcinate containing graphite. Detonating fuze 3 is inserted in the mouth of the sheath 1 and a short rigid metal tube 9 may be inserted in each end of the tube 8 to keep the bore open. Each tube 9 may have a flange at one end to limit its movement during assembly. Specifications 588,613 and 731,108 also are referred to.
GB18035/55A 1955-06-22 1955-06-22 Delay blasting device Expired GB782305A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB18035/55A GB782305A (en) 1955-06-22 1955-06-22 Delay blasting device
US571739A US2891476A (en) 1955-06-22 1956-03-15 Delay blasting devices
FR1147392D FR1147392A (en) 1955-06-22 1956-04-16 Delay blasting device
DEI11857A DE1043905B (en) 1955-06-22 1956-06-22 Ignition cord connector with delay effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18035/55A GB782305A (en) 1955-06-22 1955-06-22 Delay blasting device

Publications (1)

Publication Number Publication Date
GB782305A true GB782305A (en) 1957-09-04

Family

ID=10105510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18035/55A Expired GB782305A (en) 1955-06-22 1955-06-22 Delay blasting device

Country Status (4)

Country Link
US (1) US2891476A (en)
DE (1) DE1043905B (en)
FR (1) FR1147392A (en)
GB (1) GB782305A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101051A (en) * 1957-07-31 1963-08-20 Western Co Of North America Apparatus for initiating fractures in earth formations
US3154013A (en) * 1961-10-10 1964-10-27 Du Pont Sonic pulse generator
US4335652A (en) * 1979-02-26 1982-06-22 E. I. Du Pont De Nemours & Company Non-electric delay detonator
US4350097A (en) * 1980-05-19 1982-09-21 Atlas Powder Company Nonelectric delay detonator with tubular connecting arrangement
US4770097A (en) * 1986-07-04 1988-09-13 General Mining Union Corporation Limited Mining method with no delay between shot initiator and firing
US4796531A (en) * 1986-07-04 1989-01-10 Gernal Mining Union Corporation Limited Mining method
US4771694A (en) * 1986-08-19 1988-09-20 The Ensign-Bickford Company Blasting signal transmission tube connector
US4742773A (en) * 1986-10-03 1988-05-10 The Ensign-Bickford Company Blasting signal transmission tube delay unit
US4730560A (en) * 1986-10-03 1988-03-15 The Ensign-Bickford Company Combination blasting signal transmission tube connector and delay assembly
US4716831A (en) * 1986-11-03 1988-01-05 The Ensign-Bickford Company Detonating cord connector
CN110186341B (en) * 2019-07-05 2023-06-16 中国人民解放军陆军工程大学 Blasting device and method for rapid forming of hard rock V-shaped pits
CN118500207B (en) * 2024-07-18 2024-09-27 辽宁宏凯气能技术有限公司 Flexible fracturing device for tunnel and application method of flexible fracturing device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736263A (en) * 1956-02-28 Blasting explosive device
US2750831A (en) * 1956-06-19 Method of manufacturing electric blasting caps
DE812233C (en) * 1948-10-02 1951-08-27 Erwin Bargmann Hangings for windows
BE503949A (en) * 1950-06-15
DE915197C (en) * 1952-03-19 1954-07-15 Dynamit Nobel Ag Delayed piece as a connection between detonating cords
US2757566A (en) * 1953-02-26 1956-08-07 Canadian Ind 1954 Ltd Delay electric blasting caps containing spiral delay elements
US2796834A (en) * 1956-03-09 1957-06-25 Canadian Ind Short interval delay blasting device

Also Published As

Publication number Publication date
US2891476A (en) 1959-06-23
DE1043905B (en) 1958-11-13
FR1147392A (en) 1957-11-22

Similar Documents

Publication Publication Date Title
US3713384A (en) Blasting method
GB864238A (en) Shaped explosive charge
GB782305A (en) Delay blasting device
GB643871A (en) Improvements in or relating to ammonium nitrate blasting cartridges
GB579281A (en) Improvements in or relating to explosive primers
US3021786A (en) Blasting device
GB865756A (en) Improvements in or relating to initiating devices
GB708422A (en) Improvements in or relating to delay blasting devices
GB576219A (en) Improvements in or relating to intermediate explosive primers
GB1195461A (en) Blasting Method and Devices therefor
GB1024256A (en) Detonation interrupter
GB1074307A (en) Surface igniter for combustible charges
GB1232443A (en)
BE594332A (en) Detonator for explosive charges.
GB951626A (en) A method of blasting earth formations
GB785745A (en) Blasting initiator
GB956023A (en) Improvements in or relating to detonators
GB1168947A (en) Method of and Apparatus for Reducing the Bubble Pulse from Underwater Explosions and Pressure Impulses
GB1004711A (en) Improvements in mine and quarry blasting
GB776854A (en) Improvements in or relating to delay electric initiators
GB982364A (en) Improvements in or relating to a blasting assembly
GB578775A (en) Improvements in or relating to high explosive projectiles or missiles for use against armour plate and the like
GB728262A (en) Improvements in or relating to firedamp proof electric time fuzes
GB804941A (en) Improvements in mine blasting, particularly those in which time delay fuses are employed
GB735407A (en) New and improved blasting initiator