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File:Presto 8N Acetate engraver, 1950 (24639289438).jpg

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Summary

Description

Used to record radio programs on 16” discs. Photo taken by the uploader (who is also the flickr user in question) at the CBC Broadcast Centre in Toronto.

Presto 8N Acetate Engraver - 1950

The CBC recorded radio programs on 16-inch
acetate transcription discs.

Made of glass, metal or even paper with a thin layer
of acetate fixed to the surface, these discs were used 
until 1966.  Recordings were made made by carving a
groove in the acetate with a needle, a tiny vacuum, 
mounted on the end of the needle arm removed the
acetate residue.  Discs were very durable and were
usually recorded at either 33 or 78-rpms and could be
engraved either from the outside in or the inside out
(a small icon on the disc indicates which direction
was used)
Acétate Engraver - 1950 Modèle 8n Presto

Le Radio-Canada a enregistré les programmes par radio
sur des disques de transcription de l'acétate 16-inch.

Fait du verre, du métal ou méme du papier avec une couche
mince d'acétate fixée sur la surface, des disques ont été
employés jusqu'en 1966. Des enregistrements ont été faits
en découpant une cannelure de l'acétate avec une aiguille;
un vide minuscule, monté sur l'extrémité du bras d'aiguille a
enlevé le résidu d'acétate Les disques étaient très durables
pourraient ètre gravès de l'extérieur dedans ou de l'intérieur
hors de (une petite icône sur le disque indique quelle
direction a été employée)
Date
Source Presto 8N Acetate engraver, 1950
Author oaktree_brian_1976 from Canada

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This image was originally posted to Flickr by oaktree_brian_1976 at https://flickr.com/photos/66151649@N02/24639289438 (archive). It was reviewed on 21 November 2017 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

21 November 2017

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