[LB009373], Letter from Thomas Alva Edison to Edward Hibberd Johnson, November 27th, 1881


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[LB009373], Letter from Thomas Alva Edison to Edward Hibberd Johnson, November 27th, 1881

Editor's Notes

Continuation of letter of 23rd. Voltage regulation when throw off a dynamo in a battery of them. Answers EHJ's questions about regulation.. Use mercury on dynamo; "it is essential for the successful running of a Dynamo (& all our men are now taught so) that before starting up the brushes should be taken off on the ends, nicely cleaned and set exactly right.." "I suppose you intend to carry out in every particular the Safety Catch business. This is growing in importance every day here." Working on indicator for isolated plants "for notifying when the lights go beyond eight or sixteen candles.." "I do not see how you got Preece. I supposed he was dead against me." Do you really think he thought Hughes microphone worked on different principle than carbon telephone? Was "my tirade against him..too severe to permit of his acknowledging that he did not at first understand the principle involved." Don't tie up with any competitor. Gas vs. electric comparison for London. TAE doesn't like Faure batty. poss select…………… 14 pages though.






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Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
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