Recorder Player of the 1800s

The inventor of numerous items, including incadescent bulb and gramaphone, Thomas Alva Edison, had a cylindrical piece.
Thank God for the Newtons, Edisons and Arthur Clarkes we are chatting: the computer geek [you] and keeg [me].
thanks, that was informative, but wonder if i would remember it for long.
we lose track of information when we do not use them often enough.
ben