Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 438
r rollers and the cloth to be imprinted therewith. A torrent of sparks I have noticedto issue from the compressed India-rubber, too intense to be sustained by the knuckles, held near them,without absolute pain. Indeed, the process of printing with this material was finally suspended fromthe danger… … Frictional electrical machines were first constructed to be operated by the successive approximations orcontacts of the parts of the revolving glass cylinder A, against the parts of a rubber attached to a hol-low metallic cylinder F, mounted on a pillar of glass. This pillar is sustained on a…
Mechanical engineering
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