GB313605A - Method of protecting electric blasting fuses against the action of stray currents - Google Patents

Method of protecting electric blasting fuses against the action of stray currents

Info

Publication number
GB313605A
GB313605A GB17696/29A GB1769629A GB313605A GB 313605 A GB313605 A GB 313605A GB 17696/29 A GB17696/29 A GB 17696/29A GB 1769629 A GB1769629 A GB 1769629A GB 313605 A GB313605 A GB 313605A
Authority
GB
United Kingdom
Prior art keywords
resistance
fuze
action
stray currents
protecting 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
GB17696/29A
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.)
LIGNOZA SPOKA AKCYJNA
Original Assignee
LIGNOZA SPOKA AKCYJNA
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 LIGNOZA SPOKA AKCYJNA filed Critical LIGNOZA SPOKA AKCYJNA
Publication of GB313605A publication Critical patent/GB313605A/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
    • 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)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

313,605. Lignoza Sp¾lka Akcyjna. June 15, 1928, [Convention date]. Drawings to Specification. Blasting fuzes.-An electric fuze is shunted by a resistance to prevent accidental explosion by stray currents. The shunt resistance may be adapted to fuze at a certain current, whereby its resistance is increased and more current is then passed to the fuze for firing it. In addition to the shunt resistance, a resistance may be inserted in series in the fuze circuit.
GB17696/29A 1928-06-15 1929-06-08 Method of protecting electric blasting fuses against the action of stray currents Expired GB313605A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL337837X 1928-06-15

Publications (1)

Publication Number Publication Date
GB313605A true GB313605A (en) 1930-11-10

Family

ID=19936254

Family Applications (2)

Application Number Title Priority Date Filing Date
GB17696/29A Expired GB313605A (en) 1928-06-15 1929-06-08 Method of protecting electric blasting fuses against the action of stray currents
GB26440/30A Expired GB337837A (en) 1928-06-15 1929-06-08 Method of and means for protecting electric blasting fuses against the action of stray or undesired electric currents

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB26440/30A Expired GB337837A (en) 1928-06-15 1929-06-08 Method of and means for protecting electric blasting fuses against the action of stray or undesired electric currents

Country Status (1)

Country Link
GB (2) GB313605A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2880110A1 (en) * 2004-12-23 2006-06-30 Davey Bickford Snc Pyro-electronic primer for pyrotechnic field, has electric shunt disposed in parallel with electrothermal bridge and controlled by electronic circuit via line, to permit selection between closed and open states

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963971A (en) * 1957-10-02 1960-12-13 Hercules Powder Co Ltd Initiator assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2880110A1 (en) * 2004-12-23 2006-06-30 Davey Bickford Snc Pyro-electronic primer for pyrotechnic field, has electric shunt disposed in parallel with electrothermal bridge and controlled by electronic circuit via line, to permit selection between closed and open states
WO2006070170A1 (en) * 2004-12-23 2006-07-06 Davey Bickford Pyroelectronic detonator provided with a circuit for shunting an electrothermal bridge
US8327764B2 (en) 2004-12-23 2012-12-11 Davey Bickford Pyroelectronic detonator provided with a circuit for shunting an electrothermal bridge

Also Published As

Publication number Publication date
GB337837A (en) 1930-11-10

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