[D8230ZBF], Letter from Francis Robbins Upton to Thomas Alva Edison, July 21st, 1882


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


[D8230ZBF], Letter from Francis Robbins Upton to Thomas Alva Edison, July 21st, 1882

Editor's Notes

"Weighed fibres." Resistance tests of various carbons. This is to try and make a 140 volt lamp at 12 per HP. "Yet it is almost beyond hope at present as we have no record to encourage us of such a lamp lasting." "Village-Plant lamps." Moore says wants 3000 lamps, 6 cp; in six weeks. "Regarding sockets." What about the standard size promised awhile back? We've heard nothing lately about this. "Nickle forms." "Old Furnace" Lawson says not wkg right. "Pump Room Holzer has now put the men on piece work 2 1/4 cts per A lamp 1 3/4 cts. per B lamp." New pump has arrived. "Platina wire." Need more. "Small Drill Press. Bradley wants one. Shall I order one." "Cost lamps I know that the lamps cost now more than they did at one spell at the Park. yet I feel very sure that we shall make them cheaper than ever in a short time. We shall have more complete facilities for carbonizing and more pumps ready in a few weeks." "K Machine" Machine Works charges $1350 per machine and $1.25 per brush. "Is that right price." "Money. We need this badly." {annote with LB007888}






Folder/Volume ID


Microfilm ID


Document ID



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