[LB012268], Letter from Thomas Alva Edison to Charles Augustus Young, May 11th, 1882



Your favor of 4th inst came to hand at a time when my establishment was being moved from New York back to Menlo Park which please accept as an apology for the delay in replying to you.##I have ordered to be sent you 50 B lamps (some eight and others Sixteen candle power). The machine to give the proper electromotive force for most of our "B" lamps should run at 2000 but low volt lamps will be sent you which will doubtless enable you to get the proper candle power at 1700 or 1800 revolutions or even less. You shuld get such speed as will give the volts to suit the lamps. Considerable difference in volts will be made if the brushes are too far advanced in direction of rotation The tips of the Brushes should be set just on the neutral point (i.e.) at right angles to opening in field.##I have ordered 25 sockets with Cocks and a variety of lead safety wire to be sent you. You can test the fusing point and pick out right size to carry your lamps. It should be capable of carrying double the number of lamps used by you.##If you have any trouble we can send a man down as we have plenty of them.##The lamps ordered will be fully marked as to volts and candle power








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[LB012268], Letter from Thomas Alva Edison to Charles Augustus Young, May 11th, 1882

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

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