General Electric Company

Norman E Kewley

Andrew Smetana

Norman C Fulmer

A plurality of flash lamps have percussive ignition tubes mounted in a base member. Striker springs for the lamps are cocked behind posts extending from the base member, and an opening through the base member beneath each striker spring permits a trigger finger to rise from a camera through an appropriate opening and release a striker spring which then impacts against the ignition tube of a lamp and causes the lamp to flash. The base member is provided with flat-top raised ribs extending partly along the sides of the openings and between the cocked positions of the striker springs and the associated lamp ignition tubes, for guiding the travel of the striker springs.

Percussive flashcube arrangement

A photoflash lamp array of the FlipFlash type comprising a plurality of flash lamps, a reflector unit, a circuit board, and a flash indicator sheet. The reflector unit is provided with one or more indexing rim protrusions which extend into flash indicator openings in the circuit board for aligning the reflector unit to the circuit board.

Flash lamp array construction

Flash lamp lead-in wires are embedded in a circuit board and are in contact with circuit runs carried by the board. The end of one lead-in wire of at least one of the lamps extends from the circuit board and makes electrical contact against a sheet-like shield member. In a preferred method the lead-in wires of a lamp are driven through the circuit board by ultrasonic drivers offset from each other so as to drive against one lead-in wire closer to its end than is the other.

Shield connection in photoflash array

A multiple flash lamp array having an electrically conductive reflector unit positioned between the flash lamps and a circuit board. A radiation-actuated last-flash indicator switch is positioned on the circuit board behind the last lamp to be flashed and is connected between an electrical ground circuit run and another circuit run. An opening is provided through the reflector at the last-to-flash lamp, in alignment with the last-flash indicator switch, and the rear edge of the opening is shaped to contact the electrical ground circuit run adjacent to the last-flash indicator switch for electrically grounding the reflector.

Multiple flash array

A multiple lamp photoflash array of the FlipFlash type having flash-sequencing circuitry for causing the lamps to flash one at a time in response to firing pulses applied to the array. All lamp circuits except for the last-to-flash lamp provide an open circuit after lamp flashing, and the last-to-flash lamp provides a short circuit or low impedance after flashing to function as a last-flash indicator switch.

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Pepper Pike, OH, United States of America

Norman E Kewley