Method and apparatus for examining documents

Card – picture – or sign exhibiting – Photographic transparency viewer – e.g. – x-ray viewer

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Details

40471, 40518, G02B 2702

Patent

active

045788871

ABSTRACT:
Improved apparatus is provided for examining large quantities of documents and, particularly, x-rays, positioned in front of a viewing station. The present invention utilizes an elongate sheet of plastic which can be power controlled to move in a generally horizontal direction across the viewing station. In the area of the viewing station, the plastic sheet is tilted backward, so that gravity assists in retaining the documents on the plastic sheet. Novel means are provided for retaining the film on the plastic sheet between the idler rollers and drums. Improved methods are disclosed herein for viewing large quantities of documents such as x-rays.

REFERENCES:
patent: 1553302 (1925-09-01), Allatt
patent: 2002867 (1935-05-01), Powers
patent: 2782538 (1957-02-01), Perretti
patent: 3120066 (1964-02-01), Reeves
patent: 3362094 (1968-01-01), Mellander

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