[NM021AAH], Technical Note, Thomas Alva Edison, October 29th, 1887


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[NM021AAH], Technical Note, Thomas Alva Edison, October 29th, 1887

Editor's Notes

Dick-- Please fix up another case with the shifting ratchet wheel device & apply it to transformers The object being to disconnect & convert transformers as the load diminishes or increases all from the station Thus [drawing] You know the trouble with the alternating system is that while the sale of light is usually all in 4 hours the loss in the transformers which is 8@12 per cent according to construction goes on during the whole 24 hours & the loss in some cases in the transformers equal the sales so you see it is a great stride in the direction of economy to convert & disconnect transformers as the load varies-- get a strong claim on this holw on the great economy etc as I am certain they will run a foul of this before long-- Bill to light Co as its for protection purposes PS-- You might show separate circutes running to each transformer from station with magnet to control switch also in hand switch at each transformer to disconnect-- also a time clock controlling a switch to disconnect at any prearranged time-- If this cant be put in one patent make 2



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