Hi, I thought these were added because Edison was planning on making regular, not LP 12 inch records. Here is a message from Ron D:
.. the 10 and 12 buttons on later Edison DD machines were designed to place the reproducer on the rim of ten and 12 inch DD's. The buttons appear to have been added around 1923 when Edison was planning on releasing 12 inch regular Diamond Discs. This never came to pass, but the buttons are useful in positioning the LP reproducer on 10 and 12 inch Edison LP's. Hold the proper button down and the horn and reproducer will swing into proper relationship with the record size chosen. Ron Hi list: I was in an antique shop the other day and ran across an Edison diamond disk player. It had a feature That I hadn't seen before. At the left of the works, between the platter and bedplate were 2 buttons that had a "10" and the other had a "12" on it. I presume it has something to do with the speed or size of record to be played. Any information and response explaining this feature would be appreciated. thanks in advance Bob
