Vacuum drum planter

Details Vacuum drum planter Vacuum drum planter

1979-03-08

1981-12-22

Bratlie, Steven A.

Planting

Drilling

Hill-planting machines

111 74, 111 89, 111 90, 111 77, 221211, A01C 704, A01C 720

Patent

active

043065090

ABSTRACT:
An apparatus for continuously metering seeds onto a seedbed and simultaneously pressing the seeds into the soil. The seed planting apparatus includes a drum adapted to be moved in rolling contact across the seedbed, and which transports seeds on its peripheral wall from a hopper to the seedbed. The seeds are retained against apertures in the peripheral wall by means of a vacuum transmitted to the apertures through manifolds within the drum that are interconnected with a vacuum pump by means of individual hoses. A cam interrupts the vacuum by compressing the hoses when the seed-bearing apertures contact the seedbed, thereby releasing the seeds and pressing them into the soil. The seeds are preferably placed on the seedbed in a uniformly spaced array predetermined by the uniform alignment and spacing of the apertures on the wall of the drum. An air brush is also included to remove substantially all seeds in excess of one from the apertures before the apertures rotate from beneath the hopper, and a brush removes soil and debris from the exterior wall of the drum before the apertures re-enter the hopper.

REFERENCES:
patent: 1227628 (1917-05-01), Kiefer
patent: 2445698 (1948-07-01), Siebring
patent: 3156201 (1964-11-01), Tweedale
patent: 3387746 (1968-06-01), Whipple
patent: 3770164 (1973-11-01), Hembree
patent: 3843018 (1974-10-01), Holmes et al.
patent: 3872805 (1975-03-01), Kolk
patent: 4145980 (1979-03-01), Boots

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