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The figures above show a mechanism for the prevention of feeding a second document into a reader area before the reading of a first document is finished.
English (United States)
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Mechanism Preventing Double Reading of Documents
The figures above show a mechanism for the prevention of feeding a second
document into a reader area before the reading of a first document is finished.
A boomerang-shaped lever 1 is placed adjacent the feed path of a document.
Lever 1 is pivotally fixed on a tap 3 and has at one end thin resilient ribs 4 and at
the other end a device containing a spring-biased pin 6. When a document is fed
into the reader, resilient ribs 4 cause the lever 1 to tilt as shown in Fig. 2. Spring-
biased pin 6 is resiliently pressed against document 2. When the trailing end of
document 2 has passed, pin 6 is brought by the force of spring 7 into blocking
position. Thus feeding of a new document is prevented until the trailing end of
document 2 has passed the lower rib 4. At that moment lever 1 is tilted to its idle
position (Fig. 1) by attraction of gravity, thereby allowing a new document to be
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