maskine til at lave LP med

Har kun kunnet finde noget omkring det på engelsk:

Hele historien fra den første ´phonograph´ til ´grammophonen (Graphophone) osv.

Fremstilling af de første plader:

´... By 1888 he had developed a system using a flat disc with a lateral spiral groove. The master was made of zinc covered in a thin layer of acid resistant wax that was scratched off during recording. The master was then dipped in acid creating a groove in the exposed zinc. This created a reversed matrix or negative stamp, giving Berliner the opportunity to mass-produce records in vulcanised rubber.
´

1890-1899:
Berliner's Gramophone Company now started using organic lacquer called shellac which, combined with a new technique of creating a master from wax rather than zinc, gave a much clearer, stronger and more dynamic sound.

Du kan evt. selv læse mere på siden:
http://www.bbc.co.uk/music/features/vinyl/18501879.shtml

Anden side på engelsk:
http://www.vinylrecordscollector.co.uk/text/index.html

Fandt lidt info på dansk:
http://home6.inet.tele.dk/pedipsen/Audio/78/

Hæ hæ, der er faktisk et firma som stadig laver vinylplader her:
http://www.gzcd.com/en/index2.html