Harvesting header having timed double sickle toothed belt drive
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United States of America Patent
Stats
-
Mar 28, 1989
Grant Date -
N/A
app pub date -
Jul 14, 1987
filing date -
Jul 14, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Sprockets of a toothed belt drive for a double sickle harvesting header are carefully aligned relative to each other and to the toothed belt so that the belt can be twisted about its longitudinal axis during advancement along a closed loop path of travel in order to translate rotary motion about a first axis to rotary motion about a second axis which is inclined relative to the first axis. The toothed belt has semicylindrical teeth, and two idler pulleys contact a return portion of the belt to insure that the same are maintained in parallelism with grooves formed in sprockets of the mechanism in order to avoid imposition of side thrusts on the belt or undue wear on the teeth. The toothed belt reciprocates both sickles of the harvesting header in synchronous, timed fashion along directions opposite to each other so that vibrations which would otherwise be established by non-synchronous movement of the sickles are significantly dampened.
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