[N312031], Technical Note, Thomas Alva Edison, July 2nd, 1886


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[N312031], Technical Note, Thomas Alva Edison, July 2nd, 1886

Editor's Notes

p. 31 drawings "Lamp Expmts"; p. 33 drawings "Dyer for patent on process"; p. 35 drawings one labeled "Hand pump"; p. 37 undated drawing "Dyer patent Phosphorous may be dissolved in Benzine the globe filled & vac got then heat of lamp makes it PO[3 or 5?] Oxygen could be used-- Ammonia & HCP. Ammonia absorbed by charcoal or in substance heated giving HCl. Gas passed through X could exit c then selaed also N. The X heated & chlorine absorbed"; p. 39 undated "Try pentachloride of phosphorus both to absorb Hg & act as drier The C combining with Hg & liberating P which form PO3 with O, & O of H2O Spk to Holzer abt disolving out those Lamps that PO5 jumped up into-- Thiosulphate of soda removes gaseous Chlorine from substances it is absorbed into."; p. 41 undated "glacial acetic acid melted parafine for pump to replace Mercury also melted Rose metal, or fusible metal (drawing) fill with & boil parafine then insert & heat globe to expel parafine & seal off--" [next dated entry is 860704]




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