Document tractor

Details Document tractor Document tractor

1979-06-27

1980-04-22

Christian, Leonard D.

Advancing material of indeterminate length

Means to engage longitudinally spaced modifications in material

Pins on flexible belt or chain

226170, G03B 130

Patent

active

041990919

ABSTRACT:
In order to removably yet reliably assemble the frame parts, endless belt and sprocket of a document tractor, holes are provided in the hub of one of the frame parts which provide a guide platform for the endless belt which has pins engageable with perforations on the document to be metered. Flexible rods in registry with these holes extend from the other frame part. Latches on the outer ends of these rods engage the outsides of the holes when the rods move into latching engagement as the frame parts are brought together. The tractor may be disassembled by manually deflecting the rods to release the latches.

REFERENCES:
patent: 3825162 (1974-07-01), Hubbard
patent: 4129239 (1978-12-01), Hubbard

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