[D8741AAE], Letter from Deutsche Edison Gesellschaft, James C Hipple to Thomas Alva Edison, September 25th, 1887


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[D8741AAE], Letter from Deutsche Edison Gesellschaft, James C Hipple to Thomas Alva Edison, September 25th, 1887

Editor's Notes

"I have thought of writing you many times about what we are doing here, but as I have seen Mr Upton & Mr Dyer several times in the alst two years & have talked to them, have let the matter slip by. ## We are now testing & finishing 2000 lamps each day mostly with your screw socket, but I make most every kind of socket terminal at present I have orders for 80,000 lamps with the Swan socket. ## The company here have taken another Factory & move the machine shop there, giving me the whole shop to make lamps in. I am getting ready to make 5000 per day & must make this number right after New Years. ## Am making now 10c & 16c 50 Volts 10, 16, 20, 25 & 32 candles 100 Volts and a good many 16 candles 65 Volts, all made at present from Bamboo except 10c 100 Volts which is made from Mexican fibre. ## We are mow experimenting on a collodiom fibre the same as used in the als Kortinsky lamp. We make the collodiom liquid jelly pour out in this sheets on glass table & when partly dry cut with machine into fibres. Samples of which I enclose with this fibre we have obtained splendid results both in economy & life& I think after a while most of our lamps will be made from this fibre as the economy is very much better. ## I carbonize this fibre in pulverized charcoal only lay them in & cover them up with the charcoal (no form or anything) then begin with a very slow fire& finish with a very high one, time for carbonizing is about ten hours I use gas for carbonizing & like it much better than the coal but it costs more. ## I have done entirely away with plating & save the company thousands of marks by using paste. Where is used to cost us one cent each for putting carbons in clamps & plating, it costs now only five cents per hundred & breakage extremely small. Our lamp bulbs are all blown in molds to exact size, so lamps of same C.P. are always same size & shape. I find by having a regular sized bulb it is much better to socket & look much easier & cheaper than the Newark factory. If you would like a bulb or two as sample I will send them to you. Please do not let any one see this but Mr Batchelor & Mr. Upton. If there is any information I can give you I would only be too happy to do so. My Wife joins me in kindest regards to you & Mr & Mrs Batchelor. ## If you wish to answer this please address private 22 Schlegel Strasse Berlin"






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