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[D8252M], Letter from George A Hamilton, Western Union to Thomas Alva Edison, August 7th, 1882

Title: [D8252M], Letter from George A Hamilton, Western Union to Thomas Alva Edison, August 7th, 1882
Editor's Notes: Re: yours of 24th. Please advise me of weight and cost of your machines most suited for local purposes, ie., working sounders. Also give armature resistance---as low as .01 ohm? Extensive TAE marg: "One of our Z machines could be wound to give say 3 volts. Its resistance would be 1/10,000 of ohm (one ten-thousandths). We have two armatures that are used in our regular Z machines, one of .035 ohm resis giving 55 volts & one of .14 ohm giving 100 volts. 500 lines of 100 ohms each could be worked from this machine........[discusses ft.lbs., elec losses]. Price of regular Z as above $1200 setup.= Current perfectly steady. We also make attachments to commutators whereby you can run several circuits from the same bobbin each having different volts." [might want to consider selecting for this marginalia about prospective new application]
Author: Western Union; Hamilton, George A
Recipient: Edison, Thomas Alva
Date: 1882-08-07
Type: Letter
Subject: Telegraph; Dynamos and generators
Folder ID: D8252-F
Microfilm ID: 63:694
Document ID: D8252M
URL: https://edisondigital.rutgers.edu/document/D8252M
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Has Version: Archive.org Viewer, Microfilm Series Reel 63
License: CC0 1.0 Universal

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