DRH and jamiegramo raised these two very interesting questions:
1. In light of the label "sapphire point," I'm wondering: Did the records have the same sort of "sapphire ball" type groove as Pathé discs? I'd always thought Pathé originated that geometry, but if Neophone used it first, I guess Pathé simply would have popularized it.
2. It is interesting that the advertisement provided by Sidewinder says that Neolite records can be played with either sapphire or needle. I wouldn’t play Pathé vertical cut records with a needle.
I found the patent for this sound-box and may have the answers.
Here is the link:
https://worldwide.espacenet.com/patent/ ... q=neophone
and the patent to look at is the 4th one down: 'GB190607472A Improvements in and Apparatus for Sound Reproducing Machines' (I think that you will then have to click on 'Bibliographic data' to reveal a list of options which includes 'description' to again click on).
I can't be sure but this is my current understanding. Again, I may have mis-understood.
Question 1.
The patent description states:
'This invention provides a new and improved method of reproducing records which have been recorded on the Edison phonograph system with a hill and dale cut or track. Such records have hitherto been reproduced only by means: of a diaphragm fitted with a pointer consisting of a round pointed sapphire ur similar hard material'.
I notice that it says 'fitted with a pointer consisting of a round pointed sapphire'.
So, I think it was probably some kind of sapphire ball because of the wording - it seems a sapphire 'ball' can also be a 'point' ?
Question 2.
The patent description states that:
'This invention provides a new and improved method of reproducing records which have been recorded on the Edison phonograph system with a hill and dale cut or track. Such records have hitherto been reproduced only by means: of a diaphragm fitted with a pointer consisting of a round pointed sapphire ur similar hard material'.
and:
'No means has been discovered until the present invention of reproducing Edison phonograph or hill and dale cut records by means of a needle or fine sapphire point fitted at the edge of the diaphragm to a connecting bar as in the case of the Berliner records'.
So, it seems that 'Neophone' are indeed saying that this sound-box can use steel needles to play hill and dale records.
How it does this seems to simply be by designing a sound-box which can be used at an angle of 45 degrees.
It does say however:
By employing a sapphire point this method can be used for repro- ducing records made with an Edison phonograph track upon wax, enamelled cardboard, papier mach or similar materials which are softer and less expensive and which do not permit of the use of a needle.
As I say, this is my understanding so far. I would appreciate some-one having a look at the patent description and giving a second opinion.
Very interesting indeed !