Paper feed tractor

Details Paper feed tractor Paper feed tractor

1989-10-03

1990-07-10

Bui, Thuy M.

Endless belt power transmission systems or components

Belt guide has surface in sliding contact with belt

474144, F16H 718

Patent

active

049404490

ABSTRACT:
A paper feed tractor comprising a tractor frame including a pair of side frames and a belt guide disposed between and coupled to the side frames, a sprocket wheel supported for rotation between the two side frames, an endless belt adapted to be driven by the sprocket wheel to slidably travel on guide walls formed on three peripheral faces of the belt guide, and a cover mounted at a side thereof for pivotal motion on one of the side frames from and to a position in which it extends on a linear one of the guide walls of the belt guide. The endless belt has feed pins provided projectingly in a row at equal intervals on an outer peripheral face thereof, and a paper holder provided on the cover is positioned, on at least one side of the feed pins, in parallel to the outer peripheral face of the endless belt. The outer peripheral face of the endless belt has a non-slipping face formed thereon on which concave and convex portions of a small difference in dimension are formed to reduce a possible slip between the outer peripheral face of the endless belt and paper transported by the endless belt.

REFERENCES:
patent: 3575474 (1971-04-01), Russ, Sr.
patent: 4422396 (1983-12-01), Szostak
patent: 4642073 (1987-02-01), Restelli
patent: 4767386 (1988-08-01), Spaggiari
patent: 4869708 (1989-09-01), Hoffman et al.

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