Owens-illinois, Inc.

Owens-brockway Glass Container Inc.

Owens-illinois Televison Products Inc.

Thomas F Michalski

James A Ringlien

John W Juvinall

Stephen M Graff

William H Ryan

William E Johnson

Timothy A Kohler

George H Hall, Jr

Benjamin L Daniel

David J Bauer

George H Hall Jr

An apparatus and method for inspecting a container having a base and a mouth, wherein light is directed through the container base into the container, and out of the container through the container mouth, using at least first and second light sources operatively disposed adjacent to each other beneath the container base and having differing operating characteristics. Light transmitted through the container mouth is sensed, and a composite image of the container mouth may be produced from two or more images of portions of the container mouth.

Optical inspection of containers

An electrooptical system in which workpieces are illuminated from a generally uniform source of light and are line scanned for light intensity deviations characteristic of defects. Pulse trains from photoelectric detectors of a line array have pulse magnitudes which are a function of the light on discrete areas of the workpiece. Pulses having magnitude deviations from adaptively established signal levels are considered events characteristic of the defects. At the beginning of each scan the initial signals are rejected and the pulse train video signal is validated only after the video signal passed by a low pass filter exceeds a threshold. Thereafter data for the event signals of the scan are stored. In order to facilitate storage and processing of data, those event signals which occur for contiguous pulses are identified as event strings, and when an event string achieves greater than a threshold number of events, the stored data is compressed. In data compression, further storage of data and event counting are terminated until the end of the string. The data for the initial event of the string and for the end of the string is stored with a flag indicating that it represents compressed data.

Method of and apparatus for electrooptical inspection of articles

A control system for a glassware forming machine determines the machine speed in accordance with the physical characteristics of the molten glass and the type of glassware being formed. The control system is loaded with timing data representing predetermined forming steps and a machine cycle speed and a control program for generating control signals to the machine forming mechanisms for forming the selected type of glassware. As the machine is operated, one or more physical characteristics of the molten glass entering the machine are sensed and utilized by the control system to adjust the machine speed to an optimum value. The control system also can utilize signals representing the operation of the forming mechanisms to adjust the timing within the machine cycle.

Electronic control system for a glassware forming machine

Disclosed is a digital circuit for generating a swept clock frequency having a linear rate of change. A constant frequency signal is divided by a counter signal representative of the inverse of a linearly changing time dependent variable. The value of the counter signal is varied at the proper rate by means of a pair of rate multipliers and a frequency divider. Included are means for controlling the slope of the output frequency.

Clock circuit having a swept output frequency

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Maumee, OH, United States of America

Thomas F Michalski