An Improved Flash Lamp for Signalling and the like

21,702. Barnett, J. S. Sept. 23. Flash signals.- In a portable electric flash - lamp, each lamp is provided with an independent battery and circuit. In the arrangement shown, four incandescent lamps a are mounted on a brass contact - plate b fixed to a board c carrying shelves or brackets d for supp...

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Bibliographic Details
Main Author JOHN SPENCER BARNETT
Format Patent
LanguageEnglish
Published 01.09.1910
Subjects
BLASTING
HEATING
LIGHTING
LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE ORSPECIALLY ADAPTED FOR TRANSPORTATION
MECHANICAL ENGINEERING
WEAPONS
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Summary:21,702. Barnett, J. S. Sept. 23. Flash signals.- In a portable electric flash - lamp, each lamp is provided with an independent battery and circuit. In the arrangement shown, four incandescent lamps a are mounted on a brass contact - plate b fixed to a board c carrying shelves or brackets d for supporting four dry cells e. The plate b has a terminal h, to which all the negative cell terminals are connected, the positive terminals being joined to contacts i on a pivoted switch-arm adapted to be held, for example by a spring clip n, in contact with four terminals o connected to the lamps; the contacts i are adapted to screw in or out of the arm l to vary the number of lamps in circuit. The apparatus is placed in a box provided with a flash shutter operated by a key S.
Bibliography:Application Number: GBD190921702