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[D8101E], Letter from Sigmund Bergmann to Thomas Alva Edison, October 14th, 1881

Title: [D8101E], Letter from Sigmund Bergmann to Thomas Alva Edison, October 14th, 1881
Editor's Notes: Discusses potential bulb defects; maintains that it's not the sockets, or the dipping of the rings or screws which he notes and will attend to. Rather, as he convinced Upton, the sockets were perfect and the problem is probably the "material used in cementing is too much like chalk, and the leverage brought into play in screwing the lamps into the sockets pulls them apart, and not any untrueness of the sockets." He says, however, that he would be "very glad" to have someone sent down to inspect the sockets and to pass them in the future.
Author: Bergmann, Sigmund
Recipient: Edison, Thomas Alva
Mentioned: Upton, Francis Robbins
Date: 1881-10-14
Type: Letter
Subject: Production difficulties and adjustments; Incandescent lamp
Folder ID: D8101-F
Microfilm ID: 57:13
Document ID: D8101E
URL: https://edisondigital.rutgers.edu/document/D8101E
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Has Version: Archive.org Viewer, Microfilm Series Reel 57

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