[NS87AAM], Technical Note, Thomas Alva Edison, June 7th, 1887


View document with UniversalViewer   → View document on Archive.org  → Re-use this digital object via a IIIF manifest


[NS87AAM], Technical Note, Thomas Alva Edison, June 7th, 1887

Editor's Notes

"Sax No 6-- Put up 12 Lamps at 7 am get vacuum put in first peg on 55 volt on Lamp-- taking 2 hours, then pull all pegs & put on 110 volt current put 1st peg in & gradually peg up so you will have full 110 Volts on in 5 hours. Then take off the 110 & put on the 170 volt line peg up slowly so you will reach 130 volts in 1 hour, then put to yellow & seal off when power stops"; [following pages undated] "Order 7. Saxelby Run following Curve. 12 lamps put on at 7 am after Vacuum put on 55 volt current, peg up until all pegged out, in 15 minutes, then take out all pegs put on 110 volt line, and peg up until you get 55 volts, then peg up in 30 minutes until all peges in then put on 160 volt line, put in peg & peg on next to last lamp box. Then in 30 minutes peg out lamp box & go 6 pegs up on resistance, allow it burn 5 minutes after last peg then put to yellow 10 minutes & seal-- Run 2 Curves this way so as to get 20 good Lamps--"; "No 8 Sax Run 12 lamps get vac then peg right up to where the clamps get hot, put peg in & hold for 3 seconds each time, then wait little & go to next peg hold 3 seconds & so on, no current on between times after this put at yellow 10 minutes & seal off-- No 9 Another Curve get vacuum run right up as far as you can without arcing Lamp start at low current do this until clamps clean then hold at 80 candles 5 min & seal off No 10 Run Curve-- get vacuum put peg in and out 50 times 1 second each. If the tube clear go to next peg & so until clamps clean then burn 5 minutes at 80 candles & seal off"; "No 11 Saxelby-- Make mixture plaster paris & dip the lamps in so as to get good coating but wipe it away down near clamps so you can see clamps when you are working-- Work these lamps off regular--"




Folder/Volume ID


Microfilm ID


Document ID



Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Download CSV | JSON