Other

J. I. Case Company

George H Wiemers

Roland J Frase

A seed hopper construction for use in connection with rotary drum seed planter requiring positive pressure for its seed metering operation. The hopper comprises a tapering bottom wall with an opening therein and an internal duct associated with said wall and opening. A deformable tubular diaphragm valve is positioned in the duct and projects from the opening in the bottom wall. A vertical air pressure tube is mounted in the hopper and carries a two-position valve for directing air into the hopper or to the diaphragm valve. The pressure tube also has a bottom air inlet depending from the bottom wall. A centrifugal blower having a positive pressure side outlet communicates with the pressure tube air inlet and the seed drum. The blower has a negative pressure central opening in spaced registry with the diaphragm valve. With the two position valve in one position, equalized positive pressure is maintained in the drum and container for planting; with the valve in the second position, the diaphragm valve rolls a bell-shaped member into seating engagement with the negative pressure opening of the blower to create a negative pressure in the hopper for refilling seeds thereinto.

Seed hopper construction with centrifugal blower-filler

A hitch element is fixed to the end of the piston rod of a horizontally disposed double-acting hydraulic cylinder. The closed end of the cylinder is swivelly connected to the bight portion of a horizontally disposed rearwardly open A-shaped frame underlying and fixed to the rear part of a truck chassis. An upright downwardly-open omega-shaped frame is rigidly connected at its ends to the ends of the A-shaped frame. A pair of upright double-acting cylinders have their closed ends swivelly connected to opposite upper corners of the upright frame, and have their piston rods connected, by X-connected bearing sleeves, to the piston rod of the horizontally disposed cylinder. A yoke prevents movement of the bearing sleeves away from the end of the horizontal cylinder. The upright cylinders co-operate to vary both vertical and lateral positioning of the hitch element.

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Greenview, IL, United States of America

George H Wiemers