| 摘要 |
A hopper discharge arrangement includes a housing having a plurality of compartments and a material receiving trough therebeneath adapted to be connected to pneumatic conveying means. Each compartment is provided with a valve operable selectively to provide communication with the trough for selective discharge. Valve operating means includes a rotatable and slidable shaft including toggle linkage means in each compartment which is actuated by sliding or indexing movement of the shaft to provide for operative interengagement of an actuating element with said toggle linkage means.
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