Conveyors: power-driven – Conveyor section – Load simultaneously engaged between and moved by a plurality...
Patent
1984-09-12
1986-07-22
Valenza, Joseph E.
Conveyors: power-driven
Conveyor section
Load simultaneously engaged between and moved by a plurality...
74393, 271270, 198858, B65G 1514
Patent
active
046013873
ABSTRACT:
To provide a belt transport path in which the belts cyclically decelerate and accelerate, to feed paper subject matter, for example from a "first longitudinal folding apparatus" to a "second longitudinal folding apparatus" at reduced speed, two eccenter pulleys are located in respectively different planes, for example parallel to each other, rotating on a common shaft, and having the same eccentricity (x). A first run of the belt is guided from the paper transport path to loop, in part, about a first eccenter pulley, then guiding a second run of the belt from the first eccenter pulley into the plane of the second eccenter pulley, and a second guide pulley guides a third run of the belt from the second eccenter pulley back to the transport path. Two belt system may be used, located in mirror-image relationship, or a single belt can be guided adjacent the run which contacts the transported subject matter (E) from an eccenter located outside the plane of the printed subject matter. The eccenters may be circular pulleys, or may be elliptical, to provide for sinusoidal speed variation of the belt within the transport path.
REFERENCES:
patent: 3152595 (1964-10-01), Silberman
patent: 3601241 (1971-08-01), Kuhnt et al.
Holmes Jonathan D.
M.A.N. - Roland Druckmaschinen Aktiengesellschaft
Valenza Joseph E.
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