Anyone knowledgeable about gramophones (phonographs)?

[perevodchik_spb]

How this round contraption was called http://project-time-machine.com/blogtech/wp-content/uploads/tinfoil_edison.jpg ? I would call it a roller but maybe it had some special name?

UPDATE. And how do you call this big umbrella-like thing on top of a phonograph?
See http://www.bekkahwalker.net/comt111a/websites_11/kim_site/index.html http://www.bekkahwalker.net/comt111a/websites_11/kim_site/index.html