[D8518O], Letter from Polar Oil Co, P R Grey to Thomas Alva Edison, September 21st, 1885


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[D8518O], Letter from Polar Oil Co, P R Grey to Thomas Alva Edison, September 21st, 1885

Editor's Notes

[Letterhead of Polar Oil Co.] We are using your system of electric lighting through our works at Constable Hook, NJ. In the building where we wish to work at night, the rooms "are frequently full of gaseous and explosive vapors." We have the incandescent lamps in this building, but haven't used them fearing the danger of igniting the gases, notwithstanding the Edison Co. have guaranteed safety. We would like to get your individual opinion as to whether we would be safe in using the lamps. Please reply as quickly as possible, and if you would like more information, we could meet anytime. TAE Marg (on reverse): "If the gases are explosive like coal gas mixed with air, I should be afraid that the little spark which occurs when the lamp is turned off and on by the cork{?} would explode it. But if no cork{?} sockets are used and all the lamps turned on and off together from a switch outside the room, and the lamps were not allowed to shake loose in the socket, I cannot imagine how an explosion could occur. I at least would be willing to work in such a room." Next sentence crossed out.




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