Western Union type 2-A telegraph tape automatic control
date: label: date made
content: ca 1920
notes: label: Description (Brief)
content: A steel-cased controller for an automatic telegraph transmitter. Cover attached with four screws (missing) and can be removed to service the mechanism that includes two electromagnet coils, a capacitor, a resistance, four contact wheels on a geared axle, two switches, and wiring. Lever rod on right side actuates a 2-position switch. Thirteen contacts along the front are set on a plastic insulator block. A 5-position finger-dial switch on the left side is labeled: "Start", "Re-Run", Re-Punch", "Stop", and "Plant". Label on back identifies leaf spring contacts: "04", "03", "02", "01", "M-S". Nameplate reads: "Western Union Telegraph Co. / Multiplex Auto Control 2-A / Serial No. 4230 / Patented in U.S.A. 8-13-[19]18", and "Electrical Industries Mfg. Co. / Incorporated / 326-328 West 41st Street / New York". Stamped under the base: N. Y. R. S. / 5514 / inspected". Stamped on electrical switch inside: "Pat In USA 10/12/15". Old tag associates this auto controller with a transmitter table NMAH catalog number 330017.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Western Union International
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.330026
label: catalog number
content: 330026
label: accession number
content: 283729
objectType: label: Object Name
content: Automatic Multplex Control
label: Other Terms
content: Automatic Multplex Control; Telegraphy
physicalDescription: label: Measurements
content: overall - with rod: 5 in x 7 1/4 in x 12 1/2 in; 12.7 cm x 18.415 cm x 31.75 cm