Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity (1905)
American School (Chicago, Ill.) · Chicago : American School of Correspondence · leaf 407
able eonditions. The telautotjrapli has l)een l»rouo;ht to its present state chietlythroutrh ex]»eriuiental ^vork done by. or under the personal direc-tion of, Mr. Geortve L. Tiifany, to wIkjui several patents* foriniprovements have been granted. Mr. Tiffanys instrument oper-ates upon the… … _110_ Return Di r. Cor. ^^ 1% iqy_l_cirng I W til Loth Fis. 1. The operation may be briefly described thus: at the transmit-ter a pencil is attached by rods to two lever-arms which carrycontact-rollers at their ends. These rollers bear agfaiust the sur-faces of two current-carrying rheostats,…
Electrical engineering
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