[D8332ZBZ], Letter from Francis Robbins Upton to Samuel Insull, July 20th, 1883
https://edisondigital.rutgers.edu/document/D8332ZBZ
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Metadata
- Title
- [D8332ZBZ], Letter from Francis Robbins Upton to Samuel Insull, July 20th, 1883
- Editor's Notes
- Regarding Batchelors lette-the test of the Swan lamps hown in the letter of July 2 is not favorable to the swan lamps. The economy at 16 c.p. Is given 7.9 per h.p. and the average life is only 575 minutes. # Regarding pump room report His results are the same as our. If if is the the number actually put on the pumps it is more than ours slightly. His clairifaction of breakage of breakage is all right. # With good carbons and good glass and glass work the breakage in the pump room is as small as we can ask for the men are careful # Regarding the variation in the size of our fibres Batchelor is correct according in his discovery that the shrinkage in length is different in degree from the shrinkage in width and thickness. Yet we are unable to find any marked difference in shrinkage. # We work more to the candle per H.P. proportiong lamps yet as you will form Howell's table that the surface bears a direct relation to this.
- Author
- Upton, Francis Robbins
- Recipient
- Insull, Samuel
- Date
- 1883-07-20
- Type
- Letter
- Folder ID
- D8332-F
- Microfilm ID
- 67:229
- Document ID
- D8332ZBZ
- Publisher
- Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
- License
- CC0 1.0 Universal
- Has Version
- Archive.org Viewer, Microfilm Series Reel 67