[N322AAI], Technical Note, John F Ott, Thomas Alva Edison, September 26th, 1886
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Title
[N322AAI], Technical Note, John F Ott, Thomas Alva Edison, September 26th, 1886
Editor's Notes
"Memorandum-- Put flat platinum inside of filiment & soak in syrupy chloride platinum, or Double Chl of Pt and Ammonia heat & see if locks together ie metallic pt deposited <Tried not very good> also immerse the joints in syrupy solution of chl plat & pass current to bring just to red heat or use arc decompose the P & Cl-- also try Hg Amalgam & Cu also Pt Amalgam-- Put bamboo filiment in sealed tube along with phos anhy & chloride carbon in cool ends also some copper dust to absorb the Cl-- then trial to red heat protect eyes-- do it slowly try different things in tube Try filiment with PO5 slow in cool part also with nothing also ascertain what tempreature great change takes place in carbon-- use sand bath & thermometer Try Sodium to absorb H2O without PO5 Put PO5 Chl Carbon Copper dust & filiments bamboo & get vac then carbonize by heat-- also fils with ClP only Paint a plated joint with syrupy P & Cl then get vac-- (heat the Cu joint in flame before putting on P & Cl) then bring fil up so clamp heated & P& CL decomposed-- also make a plat socket break shank of carbon & insert thight fit then work syrupy Chl Plat in & decompose by needlepoint flame or arc See if by running a lamp can be worked up to 100 CP without cleaning clamps Use spark gauge with carbon electrodes at low pressure ie point when greates volume spark-- spark must not touch sides glass-- see if carbon deposited also try in gasolene gas to deposit with spark. Try two carbon electrodes side by side in gasolene & use jump Spark-- Try licorice & sugar on plat to shank & put whole in Magnesia so Pt wont melt,-- make 12 plat cupts by flattening & sprinarling end pt wires break shanks off carbon insert & plate with Cu get life-- Nitrocellulose the surface of reg fibres immerse in Ether Alchohol Solution dry & then reduce by Sulphydrate Ammonia also cut fils out of nitroceullulose paper-- immerse in Ether Alcol Sol dray & reduce to cellulose by Sulphydrate Ammonia-- try stannite sodium see if can get solvent for charcoal looking residues from the Oil Cos retorts. See if softents-- make some Caramel carbonize a fil in hot sugar treat sugar with [stoked?] lime then boil down hard & see iff it carbonizes without melting soak some paper (smooth) in sugar for 2 days & cut some filiments get life-- Draw fibres through die hot see amount lengtheningg & shrinking" [follows with notes on numbered filaments 215-222]
Author
Date
1886-09-26
Type
Folder/Volume ID
N322-F
Microfilm ID
43:521
Document ID
N322AAI
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University