[D8846AAD], Letter from Dyer and Seely to Thomas Alva Edison, February 1st, 1888


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[D8846AAD], Letter from Dyer and Seely to Thomas Alva Edison, February 1st, 1888

Editor's Notes

In your case on applying converters to electric railways, we have found an English patent to Siemens and Halske, No. 10, 926, A.D. 1886, which describes the application of alternating current apparatus to electric railways. This is not early enough to affect your U.S. case, but it makes it necessary to change your foreign cases somewhat and to limit them to the use of straight current transformers. Your case in the United States has been held up for interference; we presume it is with Siemens and Halske, although we may be mistaken in this. If with them and they rely upon their English patent, which seems to be their earliest patent, there will be no doubt of your success. We thought this matter would be of interest to you. ### Your application for patent on electrical indicators wherein your employ a standard battery at the central station, has been allowed without objection and with first-class claims. We are taking this patent at the expense of the Lamp Company and will have it issued immediately unless you desire for some reason to withhold it, or want to take foreign patents. Kindly let us hear about this. [Marginalia: "No foreign patent"] ### In your case No. 599 on direct generation, the patent office has withdrawn its requirement to furnish a working apparatus in view of arguments we have filed; but they still assert that the apparatus is inoperative. They say, however, that this objection will be overcome if you will file an affidavit 'setting forth that an apparatus constructed in accordance with the specification has been tested by him, (you), and found to be operative.' This would seem to be an easy way out of the difficulty, and will enable us to get some good claims for you on the generation of electricity by dry decomposition of a chemical compound under conditions of heat and rarefaction. If you have never tried this experiment we suggest that you do so, so that you can make the affidavit, or conclude to abandon your case. Yours very truly, Dyer & Seely




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