Sloping microfiche stage in a microfilm reader or viewer

The aim is to produce for a microfiche stage (4) in a microfilm reader, which stage can be displaced in two coordinate directions and slopes relative to the horizontal parallel to one direction, a device by means of which different operating loads occurring during upwards and downwards motion are at...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NASSL,PETER,GRAD, RAUFFER,WALTER
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 CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	The aim is to produce for a microfiche stage (4) in a microfilm reader, which stage can be displaced in two coordinate directions and slopes relative to the horizontal parallel to one direction, a device by means of which different operating loads occurring during upwards and downwards motion are at least partially compensated. For this purpose, the microfiche stage (4) is coupled to a compensation spring (21) which acts counter to the direction of the slope of the stage and approximately compensates its inclined descending force.