GB886107A - Improvements in or relating to condenser discharge blasting apparatus for explosive charges or shots - Google Patents

Improvements in or relating to condenser discharge blasting apparatus for explosive charges or shots

Info

Publication number
GB886107A
GB886107A GB12989/58A GB1298958A GB886107A GB 886107 A GB886107 A GB 886107A GB 12989/58 A GB12989/58 A GB 12989/58A GB 1298958 A GB1298958 A GB 1298958A GB 886107 A GB886107 A GB 886107A
Authority
GB
United Kingdom
Prior art keywords
switch
capacitor
explosive charges
resistor
potential source
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
GB12989/58A
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.)
Nitroglycerin AB
Original Assignee
Nitroglycerin AB
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 Nitroglycerin AB filed Critical Nitroglycerin AB
Publication of GB886107A publication Critical patent/GB886107A/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
    • F42D1/045—Arrangements for electric ignition
    • F42D1/05—Electric circuits for blasting

Abstract

886,107. Charging and discharging condenser detonator devices. NITROGLYCERIN A.B. April 24, 1958 [Nov. 4, 1957], No. 12989/58. Addition to 792,039. Class 38 (4). An electric detonator device for explosive charges is designed to ensure that a sufficient electric charge is always passed to the explosive charges. A potential source, such as a handdriven generator 2 having a voltage-doubling rectifier unit 4, charges a metallized paper capacitor 1 via contacts on switches 7 and 9. A discharge resistor 8 is connected across the capacitor via contacts on the switches 7 and 9. In use the switch 9 is depressed so as to connect the potential source to the capacitor and the capacitor is then charged. Depression of the switch 9 also disconnects the resistor 8. Without releasing switch 9, the switch 7 is then depressed which connects the terminals 6 of the detonator circuit to the capacitor. The depression of the switch 7 also breaks the discharge circuit through the resistor 8 to ensure that the charge may not be accidentally lost and it also disconnects the charging circuit so that the terminals 6 may not be connected directly to the potential source.
GB12989/58A 1957-11-04 1958-04-24 Improvements in or relating to condenser discharge blasting apparatus for explosive charges or shots Expired GB886107A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE886107X 1957-11-04

Publications (1)

Publication Number Publication Date
GB886107A true GB886107A (en) 1962-01-03

Family

ID=6833143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12989/58A Expired GB886107A (en) 1957-11-04 1958-04-24 Improvements in or relating to condenser discharge blasting apparatus for explosive charges or shots

Country Status (1)

Country Link
GB (1) GB886107A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0919782A3 (en) * 1997-11-29 2000-10-25 DaimlerChrysler AG Method and device for disposing of pyrotechnic igniters mounted in an occupant protecting arrangement for a vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0919782A3 (en) * 1997-11-29 2000-10-25 DaimlerChrysler AG Method and device for disposing of pyrotechnic igniters mounted in an occupant protecting arrangement for a vehicle

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