SPECIAL IBM COPPER 1919 SLAVE CLOCK IBM HISTORY

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NOT YOUR TRADITIONAL 120 VOLT CLOCK 95 year old clock absolutely gorgeous CLOCK coil is good i tested it this clock works shipping weight is 11 pounds box size is 21 inches by 17 inches by 8 inches clock approximately 15 inches tall An electric synchronized time clock system is introduced. 1919 24 VOLT ALL ORIGINAL Exiting the inner Town Clerk's Office, into the Outer Town Clerk's office, one finds the first slave clock. Hung on the front wall of the building, this clock is seen by all visitors into the office, and is the most accurate of the clocks we've unrestored. is type of system was developed by the International Time Recording Company (ITR) in the early 1900s. This company was later renamed International Business Machines (IBM), which sold their time division to the Simplex Time Recorder Company in 1958. The methods & clock mechanisms have remained basically unchanged, other than appearance and style over the years. Today, this same protocol is used by several manufacturers, including Lathem, Dukane, Cincinnati and Standard Electric Time. Digital master clocks have replaced older mechanical types. All consist of a master clock and a number of secondary clocks in remote locations. These secondary clocks appear to run like an ordinary plug-in electric clock and run on their own synchronous electric motor and will read more

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