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Title: Automatic Chart Changers
Author: Richard L. Howard
Source: 1971 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1971
Abstract: Automatic chart changers have earned a place In the automation of measurement stations. No station employing circular chart recorders can be completely automated without automatic chart changers. Without changers, charts must be physically removed and new charts placed regularly. This must be accomplished at the conclusion of each recording cycle regardless of weather, traffic, wOTk load or other Inconvenience. Since 1958, a number of devices have been offered to gas men which would change charts automatically. Some are still changing charts dally while some are no longer available. The first changer. The Dial-0-Graph was offered by Mullins Manufecturlng Company, Inc. next, Maeder Squler Company offered their Automatic Meterman then, the Barton Instrument Company introduced their changer, In the meanwhile, American Meter Company purchased a license from Mullins Manufacturing Company, Inc., to manufacture the Dial-0-Graph and offered it to the industry In a swlss made chart drive. As recently as 1970, a new changer was Introduced by Tejas Instrument Engineers, Inc.

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