Pneumatic feed control for pneumatic seeder and the like
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United States of America Patent
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Feb 21, 1984
Grant Date -
N/A
app pub date -
May 3, 1982
filing date -
Nov 20, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to improvements in air seeders, namely agricultural implements which utilize air pressure to move particulate material such as seeds from a feed zone to a dispersal or planting zone. The particulate material is normally fed from a hopper by a driven feed wheel or other similar mechanism. The invention provides a pressure pick-up at the source of air pressure, a conduit connecting the pick-up with a pneumatic actuator and a suitable linkage connecting the actuator with a clutch which is used to transmit drive power to the feed wheel. As long as there is sufficient pressure at the source the actuator will keep the clutch positioned to permit the feed wheel to operate. Should the pressure source fail the actuator will operate the clutch to stop transmitting power to the feed wheel and thus terminate the feeding of material which would otherwise clog the delivery conduits of the seeder.
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