GB726295A - A method of and means for blasting drill holes in a predetermined sequence - Google Patents

A method of and means for blasting drill holes in a predetermined sequence

Info

Publication number
GB726295A
GB726295A GB2241853A GB2241853A GB726295A GB 726295 A GB726295 A GB 726295A GB 2241853 A GB2241853 A GB 2241853A GB 2241853 A GB2241853 A GB 2241853A GB 726295 A GB726295 A GB 726295A
Authority
GB
United Kingdom
Prior art keywords
fuses
parts
fuse
matching
protruding
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
GB2241853A
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.)
NICHOLAS LITWINOV
Original Assignee
NICHOLAS LITWINOV
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 NICHOLAS LITWINOV filed Critical NICHOLAS LITWINOV
Priority to GB2241853A priority Critical patent/GB726295A/en
Publication of GB726295A publication Critical patent/GB726295A/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
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06C—DETONATING OR PRIMING DEVICES; FUSES; CHEMICAL LIGHTERS; PYROPHORIC COMPOSITIONS
    • C06C5/00—Fuses, e.g. fuse cords
    • C06C5/06—Fuse igniting means; Fuse connectors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuses (AREA)

Abstract

726,295. Blasting. LITWINOV, N. Aug. 14, 1953, No. 22418/53. Class 68(1). The firing of a plurality of blasting charges 1-7 in a predetermined sequence is arranged by holding the associated fuses of equal length individually and out of contact with one another in an apparatus 10 so that the ends 11-17 of the fuses protrude therefrom to varying extents, trimming the protruding ends back to the adjacent side of the apparatus, lighting said trimmed ends individually and then simultaneously releasing the fuses from the apparatus. The length of the protruding end of a fuse is dependent upon the order in which the associated charge is to be fired, i.e., the fuse of the first charge to be fired protrudes the furthest, and vice versa. One embodiment of the apparatus consists of two matching hinged parts 20, 21 provided with a plurality of matching slots 23, and a spring clamp 25 to press the parts together, when closed about the fuses, to grip the fuses. The edges 26, 27 of the parts 20, 21 facing the protruding fuses lie in a plane inclined at 45 degrees to that of the fuses within the apparatus. A second embodiment of the apparatus consists of slotted matching parts in which one part is pushed into grooves provided in the other part. A third embodiment of the apparatus consists of a flat board having two rows of holes in which each fuse is inserted to pass through a hole in each row.
GB2241853A 1953-08-14 1953-08-14 A method of and means for blasting drill holes in a predetermined sequence Expired GB726295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2241853A GB726295A (en) 1953-08-14 1953-08-14 A method of and means for blasting drill holes in a predetermined sequence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2241853A GB726295A (en) 1953-08-14 1953-08-14 A method of and means for blasting drill holes in a predetermined sequence

Publications (1)

Publication Number Publication Date
GB726295A true GB726295A (en) 1955-03-16

Family

ID=10179046

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2241853A Expired GB726295A (en) 1953-08-14 1953-08-14 A method of and means for blasting drill holes in a predetermined sequence

Country Status (1)

Country Link
GB (1) GB726295A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481884A (en) * 1981-12-28 1984-11-13 E. I. Du Pont De Nemours And Company Field-connected explosive booster for initiating low-energy explosive connecting cords
US4716831A (en) * 1986-11-03 1988-01-05 The Ensign-Bickford Company Detonating cord connector
US4730560A (en) * 1986-10-03 1988-03-15 The Ensign-Bickford Company Combination blasting signal transmission tube connector and delay assembly
US4771694A (en) * 1986-08-19 1988-09-20 The Ensign-Bickford Company Blasting signal transmission tube connector

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481884A (en) * 1981-12-28 1984-11-13 E. I. Du Pont De Nemours And Company Field-connected explosive booster for initiating low-energy explosive connecting cords
US4771694A (en) * 1986-08-19 1988-09-20 The Ensign-Bickford Company Blasting signal transmission tube connector
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

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