Electricity: motive power systems – Positional servo systems – Program- or pattern-controlled systems
Patent
1973-05-25
1977-01-25
Scott, James R.
Electricity: motive power systems
Positional servo systems
Program- or pattern-controlled systems
318602, 23515111, 3401725, G05B 1918
Patent
active
040053490
ABSTRACT:
A control system for a conveying apparatus of a type consisting of one or more independently movable carriages supported on a rail extending along a series of treating stations, and wherein each carriage has one or more independently movable lift mechanisms thereon for depositing and removing racks with workpieces at the stations. In one embodiment, the programming device on the carriage for providing sequentially-phased movement of the carriage and lift mechanisms is advanced by a transferring motor which is actuated in response to the tripping of sensing devices on the carriage indicating the position of the carriage relative to the stations and the up and down position of the lift mechanism.
The programming devices of each carriage, if a plurality of carriages are used, are interlocked to maintain them in sequence and a timer is employed to control portions of the operating cycle duration. In an alternate embodiment, the advancement of the programming device is achieved electronically in response to the carriage travel and the tripping of the lift mechanism sensing devices.
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Feldhaus John J.
Oxy Metal Industries Corporation
Scott James R.
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