Presses – Automatic or material triggered control – Of actuating means
Patent
1974-09-17
1976-06-15
Wilhite, Billy J.
Presses
Automatic or material triggered control
Of actuating means
100 53, 100215, 100229A, B30B 1514
Patent
active
039629643
ABSTRACT:
A compacting machine has a reversible induction motor drive for a ram movable in a cycle consisting of a compacting stroke, followed by a sustained dwell period, and a retracting stroke. Directional controls prepare the drive for a compacting stroke when the ram is at its fully retracted starting position and prepare the drive for a retracting stroke as soon as the ram leaves the starting position. When the ram encounters a predetermined resistance the drive automatically reverses. The ram is stopped at this time, and later is moved through its retracting stroke to complete a full cycle. Circuits are disclosed to retract the ram automatically after a lapse of time, or under manual control. A selector is also provided to make this feature optional by choice of the operator.
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patent: 3613558 (1971-10-01), Math
patent: 3714890 (1973-02-01), Moon
patent: 3720844 (1973-03-01), Sahs
patent: 3756144 (1973-09-01), Engebretsen
patent: 3805084 (1974-04-01), Schuerman et al.
patent: 3827350 (1974-08-01), Gilman
patent: 3831513 (1974-08-01), Tashman
patent: 3869978 (1975-03-01), Steinberg et al.
Hobart Corporation
Wilhite Billy J.
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