[D8429I], Letter from Francis Robbins Upton to Thomas Alva Edison, February 9th, 1884
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Title
[D8429I], Letter from Francis Robbins Upton to Thomas Alva Edison, February 9th, 1884
Editor's Notes
[Consider for selection with TAE's letter] In answer to questions: 1. getting even volts day after day is the result of experience in all depts of the business; even so we sometimes have 15% run beyond the limits for which we have a market. 2. We change the size of the carbon to meet demand but don't have reliable rules. E.G. As you know we botched 100 cp lamps and sold below cost as resistance lamps. 3. The change from 6 to 6.5" was made to meet the market. 4. The 5" ten candle lamps are apt to be run too high for long life. 5. The [ ] ten candle may be cut anywhere between 5" and 6" to meet the market. No advice on higher cp lamps. We have made ten for every one sold and they are very dfficult to make. Suggest exchanging 150 lamps with Paris to check the volts that are being used in Paris, same with England. Good lamps a matter of care as to details already well known and "proper liberality in expenditure." You might remind them that for two years the lamps cost 75 cents but were sold at 40 to help the business, and you have always maintained that lamps be sold low in order to make a large number.
Author
Recipient
Date
1884-02-09
Type
Subject
Folder/Volume ID
D8429-F
Microfilm ID
73:375
Document ID
D8429I
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University