[N314137], Technical Note, Thomas Alva Edison, March 23rd, 1886


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[N314137], Technical Note, Thomas Alva Edison, March 23rd, 1886

Editor's Notes

"instead of allowing the cylinder to rotate by dropping of a lever by gravity have the cylinder connected by friction to a constantly rotated elec engine with governor-- release by magnet= this will give true curve on blackened paper-- perhaps only a Torsion wire galvanometer al WU Phelps style= bristle to mark-- If the long magnet expmts show any abnormal results Make following 500 feet smooth soft No 4 iron wire-- cover carefully with paper separately-- wind its whole length with single layer No 22 wire Then wind this on wooden Helix like magnet" (drawing) "also make one of lead zinc tin & also copper same length instead of No 4 iron" "Get some tin & have Taylor the foundryman cast some thin iron on them if successful get some fancy stamped tin ware & cast thin plates if good have some fine samples made & arrange with Troy Stove man. Also Try brass work tinned & brass cast on it at Bergmanns-- Try that condenser we made with sheets of oxidized Linseed oil see if it still acts as Storage battery"; p. 143 "Make XYZ Thermo piles of following 10 pair series" list follows







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

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