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US 4,054,823 AGranted
Control apparatus for manufacturing systems
AssigneeWatkin Elliott Systems Engineers Limited
InventorDavid Anthony Watkin
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AssigneeWatkin Elliott Systems Engineers Limited
InventorDavid Anthony Watkin
Estimating the term…
A control apparatus for manufacturing or treatment processes in which articles or batches of articles are conveyed through a process station on endless conveyor means. The apparatus comprises electrical signal producing means for producing at its output an article or batch digital signal dependent upon the length of the conveyor means associated with one article or batch of articles. Electrical reference means capable of being set with a digital value representing the effective length of the conveyor means are provided together with electrical comparator means for receiving the signals at the outputs of said signal producing means and said reference means and for determining whether the effective length of the conveyor is an exact multiple of the length associated with the article or batch. The comparator means produces at its output a signal proportional to the deviation from the exact multiple, which serves to effect an increase or decrease of the speed of the drive means whereby an exact multiple is achieved.
A control apparatus for manufacturing and treatment processes in which articles or batches of articles are conveyed through a process station on endless conveyor means driven by a variable speed electrically controlled drive means, said apparatus comprising electrical signal producing means for producing at its output an article or batch digital signal dependant upon the length of the conveyor means associated with one article or batch of articles, electrical reference means capable of being set with a digital value representing the effective length of the conveyor means, electrical comparator means for receiving the signals at the outputs of said signal producing means and said reference means and for determining whether the effective length of the conveyor is an exact multiple of the length associated with the article or batch, said comparator means producing at its output a signal proportional to the deviation from the exact multiple which serves to effect an increase or decrease of the speed of the drive means whereby an exact multiple is achieved.
Dependencies are inferred from the claim text.