[D8847ACJ], Letter from Gaston and Marsh to Thomas Alva Edison, September 21st, 1888


View document with UniversalViewer   → View document on Archive.org  → Re-use this digital object via a IIIF manifest


[D8847ACJ], Letter from Gaston and Marsh to Thomas Alva Edison, September 21st, 1888

Editor's Notes

Wrote you before to-day; but over-looked mentioning that the zincs are doing excellently in the batteries and don't boil at all. ### Found a new but which have not been able as yet, to entirely remedy. In some manner the centres of the brass cylinder are out and don’t run true in their bearings. Tried to adjust last night and this morning, but could not in the limited time at our command. The blank wobbles slightly, and though with care we get along all right it produces a slight scratching. When new cylinders or musical ones are put on. The way we tried to adjust was as follows. First the hinged arm was screwed tight and then the right hand centre was moved slightly in or out of the bearing on end of brass cylinder. Then we took a cut off blank, turned it half way round on the brass cylinder and tested it by dropping the recording needle. In spite of repeated trials the tracking was deeper on one side than the other. Was this right? If not, can not John Ott drop us a line giving an easier method of adjustment? The above is the only bug of importance, and in spite of continuous use since Saturday night (12 hours straight to-day) the machine is in excellent condition. Yours truly, Gaston & Marsh





Folder/Volume ID


Microfilm ID


Document ID



Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Download CSV | JSON