MULTIPLE FLASH BULB HOLDER

1,103,682. Flashbulbs; flash guns. AGFAGEVAERT A.G. July 22, 1966 [July 30, 1965], No. 33095/66. Headings G2A and G2C. In a photographic flashlight device having a plurality of flash bulbs to be flashed off successively, one main electric lead 16, Fig. 1, for the ignition of the bulbs is connected t...

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Bibliographische Detailangaben
1. Verfasser:	RICHARD WICK
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM BASIC ELECTRIC ELEMENTS BLASTING CINEMATOGRAPHY ELECTRIC INCANDESCENT LAMPS ELECTRICITY ELECTROGRAPHY HEATING HOLOGRAPHY LIGHT SOURCES NOT OTHERWISE PROVIDED FOR LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS LIGHTING MECHANICAL ENGINEERING NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE PHOTOGRAPHY PHYSICS WEAPONS
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Beschreibung
Zusammenfassung:	1,103,682. Flashbulbs; flash guns. AGFAGEVAERT A.G. July 22, 1966 [July 30, 1965], No. 33095/66. Headings G2A and G2C. In a photographic flashlight device having a plurality of flash bulbs to be flashed off successively, one main electric lead 16, Fig. 1, for the ignition of the bulbs is connected to one lead 11 of each bulb and the other main lead 17 to the second lead 12 of the first bulb, a contact element 13 and lead 18 being provided between each bulb and the lead 12 of the bulb next to be flashed off so that as each bulb is flashed off its circuit is broken at the filament 10 and connection is made between the lead 17 and the lead 12 of the next bulb in the series via the contact 13 of the preceding bulb and the lead 18. The bulbs 6--9 may be mounted in a common holder 1 provided with recesses 2... 5 which may be made reflective by metallizing and dimpling, the front of the holder being closed by a pane of transparent material. The holder may be provided with a foot to fit a conventional camera socket, the foot being long enough to extend beyond the top of an extending reflector fitted to the camera. The electrical connections may be in the form of a printed circuit. Contact between the appropriate leads on flashing may be effected by applying to the top of the contact lead 40, Fig. 6, a bead of conducting fusible material 41, which may be enclosed in a ceramic cup 39. The lead 37 to the filament 36 is external to the cup and the second lead 38 passes through it. Melting of the material 41 by the heat of combustion connects the leads 38 and 40. In a modification, one main lead is flexible and is held away from the contact lead by the tension of the filament, release of which makes contact between the two leads. In another form, one main lead passes through a chamber containing a globule of mercury and closed at the bottom by a puncturable membrane, the pointed end of the contact lead touching the underside of this. Expansion of the mercury due to the heat of combustion causes puncturing of the membrane, closing the circuit between the main and contact leads.