GB402511A - Improvements in or relating to flashlight photography - Google Patents

Improvements in or relating to flashlight photography

Info

Publication number
GB402511A
GB402511A GB1825432A GB1825432A GB402511A GB 402511 A GB402511 A GB 402511A GB 1825432 A GB1825432 A GB 1825432A GB 1825432 A GB1825432 A GB 1825432A GB 402511 A GB402511 A GB 402511A
Authority
GB
United Kingdom
Prior art keywords
bulb
solenoid
circuit
flash
operate
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
GB1825432A
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.)
HENRY GEORGE GRANVILLE BLAKEMO
Original Assignee
HENRY GEORGE GRANVILLE BLAKEMO
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 HENRY GEORGE GRANVILLE BLAKEMO filed Critical HENRY GEORGE GRANVILLE BLAKEMO
Priority to GB1825432A priority Critical patent/GB402511A/en
Publication of GB402511A publication Critical patent/GB402511A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation

Landscapes

  • Stroboscope Apparatuses (AREA)

Abstract

402,511. Flashlight photography. BLAKEMORE, H. G. G., and BENNETT, R., 36, Victoria Street, London. June 28, 1933, No. 18254/32. [Class 98 (i).] An electrical system for producing a flash for use in flashlight photography comprises a solenoid adapted to operate the camera shutter, a flashlight bulb in series with the solenoid and a fusible wire or an electromagnetic device in parallel with the bulb so as to break the circuit immediately the flash has occurred. In the form shown the circuit from a source of supply 7, 8 is completed by the closing of the switch 10, thereby energizing the solenoid 3 to operate the camera shutter 1 and producing a flash in the bulb 9. Passage of the current also breaks the circuit through the fuse 5 in parallel with the bulb. The solenoid may operate the shutter through indirect means such as a system of levers, or a bulb and a dashpot may be provided to maintain the shutter open for a predetermined period after the fuse has broken the circuit. Specification 402,510, [Group XXXVIII], is referred to.
GB1825432A 1933-06-28 1933-06-28 Improvements in or relating to flashlight photography Expired GB402511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1825432A GB402511A (en) 1933-06-28 1933-06-28 Improvements in or relating to flashlight photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1825432A GB402511A (en) 1933-06-28 1933-06-28 Improvements in or relating to flashlight photography

Publications (1)

Publication Number Publication Date
GB402511A true GB402511A (en) 1933-12-07

Family

ID=10109299

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1825432A Expired GB402511A (en) 1933-06-28 1933-06-28 Improvements in or relating to flashlight photography

Country Status (1)

Country Link
GB (1) GB402511A (en)

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