Dispensing – Inspection devices – Transparent flow-line section
Patent
1979-02-26
1981-03-10
Tollberg, Stanley H.
Dispensing
Inspection devices
Transparent flow-line section
111 34, 222274, 222407, 222414, 222623, B67D 538
Patent
active
042548977
ABSTRACT:
A device for discharging particulate material, such as agricultural seed at a uniform rate comprises a hopper having a rectangular slot in the base, a driven roller having a compressible surface which contacts one side of the slot and a transparent glass metering plate attached to the hopper and which bears against the roller to provide a nip therebetween and to control the rate of flow of the material from the hopper while allowing visual examination of the flow of particulate materials between the roller and metering plate. The device may be conveniently attached to an agricultural drilling machine and the roller driven by a mechanism associated with the ground wheels of the machine. Collecting cups are provided for directing the seed from beneath the roller into the seed drills. Seed is discharged into the drills at a constant rate and no adjustment is necessary for use with seeds of different sizes. The metering plate may be replaced by an edge which is adjustable to provide a metering gap between the edge and the roller the size of which is related to the size of the seed to be discharged.
REFERENCES:
patent: 266805 (1882-10-01), Getz
patent: 969918 (1910-09-01), Streitz
patent: 1329597 (1920-02-01), Harrls
patent: 2237504 (1941-04-01), Roath
patent: 2605935 (1952-08-01), Huitema
patent: 3391831 (1968-07-01), Wolf
patent: 3872837 (1975-03-01), Rogers
patent: 3999690 (1976-12-01), Deckler
patent: 4002266 (1977-01-01), Beebe
Hestair Bettinson Limited
Silverberg Fred A.
Tollberg Stanley H.
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