GB185370A - Waterproof electric blasting cap - Google Patents

Waterproof electric blasting cap

Info

Publication number
GB185370A
GB185370A GB682722A GB682722A GB185370A GB 185370 A GB185370 A GB 185370A GB 682722 A GB682722 A GB 682722A GB 682722 A GB682722 A GB 682722A GB 185370 A GB185370 A GB 185370A
Authority
GB
United Kingdom
Prior art keywords
fulminate
petro
mercury
closed
sulphur
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
GB682722A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB682722A priority Critical patent/GB185370A/en
Priority to DEC31816D priority patent/DE378781C/en
Publication of GB185370A publication Critical patent/GB185370A/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
    • F42B3/103—Mounting initiator heads in initiators; Sealing-plugs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Cable Accessories (AREA)

Abstract

185,370. Oliver, A. L. March 8, 1922. Blasting fuzes and detonators.-An electric blasting cap, comprising a tubular casing 1 closed at one end and containing a main charge 4<1> of fulminate of mercury or similar material covered by a sulphur plug 4 holding the electric hotwire igniter 6 in a recess 7 filled with a paste 8 of fulminate of mercury, meal powder, or nitrocellulose, is closed by multiple layers of cementing materials which resist strong external pressure and prevent entrance of moisture when submerged, and also withhold the force of explosion thereby ensuring lateral bursting. As shown, the closing materials comprise a layer 10 of lithargegly.cerine and a layer 11 of petro - elastic cement or other waterproofing cement between inner and outer layers of sulphur 9, 12, the upper half of the wall of the detonator being roughened, threaded, or corrugated to ensure a firm grip by the cementing materials. The petro-elastic cement referred to is a compound of raw linseed oil, asphaltum, and resin.
GB682722A 1922-03-08 1922-03-08 Waterproof electric blasting cap Expired GB185370A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB682722A GB185370A (en) 1922-03-08 1922-03-08 Waterproof electric blasting cap
DEC31816D DE378781C (en) 1922-03-08 1922-03-15 Electrically flammable cartridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB682722A GB185370A (en) 1922-03-08 1922-03-08 Waterproof electric blasting cap

Publications (1)

Publication Number Publication Date
GB185370A true GB185370A (en) 1922-09-07

Family

ID=9821465

Family Applications (1)

Application Number Title Priority Date Filing Date
GB682722A Expired GB185370A (en) 1922-03-08 1922-03-08 Waterproof electric blasting cap

Country Status (1)

Country Link
GB (1) GB185370A (en)

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