[D8733AAH], Letter from Edison Electric Illuminating Co (New Brunswick), Wilson Stout Howell to Thomas Alva Edison, July 8th, 1887

Item

Abstract

"Herewith I beg to present a report of the twenty four (24) special lamps sent to me for practical life test. ## Sixteen of said lamps were placed in the engine and boiler rooms of our station June 10th, were placed on pliable cord pendants and stiff brackets, distributed same as in practice of ordinary lighting (not crowded on test board) ## Starting at 6:45 o'clock P.M. June 10th these sixteen lamps have average more than ten (10) hours daily to date. ## At 188 hours one lamp went out, carbon parted in natural manner, all of the remaining fifteen are still good having burned two hundred and eighty nine hours and forty five minutes (289.45) and show no great amount of discoloration, in fact are very clean. ## Eight of the twenty four lamps were started at 5:30 o'clock P.M. June 10th under same conditions but were kept lighted twenty four (24) hours daily, Sundays excepted. Having burned to 5:30 o'clock A.M. today July 8. Six hundred and seven hours and fifty minutes during which time three (3) lamps have given out naturally. Of these three lamps ## #1. burned out at 161. hrs 40. min ## #2. burned out at 229. 10 min ## #3. burned out at 597.20 min ## The remainnig lamps have been burning 607. hrs 50 min and show little blacking." Marginalia by TAE: "for E.H.J. -- I gues[-----] solid"

Mentions

Date

1887-07-08

Decade

1880-1889

Type

Identifier

D8733AAH

Folder Set

D8733

Title

[D8733AAH], Letter from Edison Electric Illuminating Co (New Brunswick), Wilson Stout Howell to Thomas Alva Edison, July 8th, 1887

Microfilm ID

119:895

Publisher

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