Lamp changing mechanism for still projector - has carriage with lamps movable at right angles to optical axis

The carriage bearing two or more sockets and projection lamps is fitted on parallel bars which are fixed horizontally at right angles to the projector's axis. The lamp in the projection position is automatically connected by spring contacts to the power supply. In one version the carriage is mo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SCHUEBEL, KURT, WELNHOFER, HANS, BAROWSKI, KARLHEINZ, 6235 OKRIFTEL
Format:	Patent
Sprache:	eng ; ger
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 BLASTING CINEMATOGRAPHY ELECTROGRAPHY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING HOLOGRAPHY LIGHTING MECHANICAL ENGINEERING PHOTOGRAPHY PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	The carriage bearing two or more sockets and projection lamps is fitted on parallel bars which are fixed horizontally at right angles to the projector's axis. The lamp in the projection position is automatically connected by spring contacts to the power supply. In one version the carriage is moved by a manual control handle which engages locating recesses for each lamp position. The recesses are made in a sliding strip with lateral adjustment for fine positioning. In an alternative version the carriage is held against spring tension by an electromagnetic latch wired into the lamp circuit. The latch opens on lamp failure and the carriage moves automatically against a fixed stop to place the replacement bulb in the operating position. The design minimises stoppages during a programme.