Plastic article or earthenware shaping or treating: apparatus – Sets of press couples comprising registering female mold... – Including positive means to eject product
Patent
1990-01-29
1991-03-05
Little, Willis
Plastic article or earthenware shaping or treating: apparatus
Sets of press couples comprising registering female mold...
Including positive means to eject product
426513, 425579, A27C 700
Patent
active
049967436
ABSTRACT:
An improved drive linkage for a reciprocating mold plate in a food patty molding machine includes, in series, a hydraulic cylinder and its piston; one is connected to a motor or other prime mover and the other to the mold plate. Three hydraulic lines connect the opposite ends of the cylinder to a large hydraulic reservoir and to each other. A hydraulic pressure flow directing means, preferably comprising check valves in the hydraulic lines, produces a continuous, unidirectional flow of hydraulic fluid from the reservoir into one end of the cylinder, on to the other end of the cylinder, and then back to the reservoir; the flow remains unidirectional despite cyclic reversal of the direction of piston movement in the cylinder.
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Formax, Inc.
Little Willis
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