[D8835AAG], Letter from Samuel Insull to Thomas Alva Edison, January 7th, 1888


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[D8835AAG], Letter from Samuel Insull to Thomas Alva Edison, January 7th, 1888

Editor's Notes

"I have your favor of Jan. 6th. With relation to the 900 sheets Tissue shipped by Mr. Parrish from Menlo Park 2 weeks ago. The shipment came to hand just when we were shutting down to take stock and hence the delay in testing same. ### We have put the sheets we received into use and we find that when the 2 sheets are properly stuck together, namely, having no air spaces between them at all, the double tissue will stand a spark about the same as our own paper will stand. When there are any air spaces, which frequently occur, the double tissue cannot stand any electric motive force in consequence. Furthermore when the tissue is subject to heat, say 200 deg. Fahr. The tissue breaks easily. ### In putting up the tissues, Mr. Parrish puts an ordinary sheet of tissue paper between each two sheets of oiled paper. This ordinary tissue paper sticks to the prepared paper, and we are obliged to use the prepared paper with an ordinary tissue adhering to it. We have not written to Mr. Parrish, but would suggest that you send this letter on to him with any comments that you wish to make. We will use up the 900 sheets sent us and then report to you more fully on our experiments and if we desire to continue its use will notify Mr. Parrish of the amount per mo. That we will require." Very truly yours, Samuel Insull General Manager





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