Brunswick double-stylus reproducer

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Torjazzer
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Brunswick double-stylus reproducer

Post by Torjazzer »

I have an early Brunwick machine with a double-stylus reproducer. When it is rotated to play vertical-cut Pathés, the stylus is askew; pointing to the left as opposed to straight out towards the front of the machine. Is this normal?
Also, there is a weight adjustment at the rear of the tonearm. I understand that this was meant for the playing of Edison records. Yet this reproducer does not have the neccesary stylus (diamond). So why have the weight adjustment?

Phototone
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Re: Brunswick double-stylus reproducer

Post by Phototone »

You should be able to rotate the the reproducer so the stylus points forward. Unless the pot-metal has frozen up.

gramophoneshane
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Re: Brunswick double-stylus reproducer

Post by gramophoneshane »

It should sit in the position shown below, and the stylus should sit at right angles to the groove.
If the body of your reproducer (and the diaphragm) are sitting level with the surface of the record , then perhaps the needle chuck is bent?
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brunswick ultona.jpg
brunswick ultona.jpg (177.44 KiB) Viewed 1923 times

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Mr Grumpy
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Re: Brunswick double-stylus reproducer

Post by Mr Grumpy »

I'm not exactly sure what your reproducer looks like because I'm a bit of a noob at this
but I opened up my Ultona reproducer on the weekend and learned quite a bit about it's inner workings.
Behind the mica on the Ultona (Victor/Pathé side) I could see two slotted head screws on on either
side of the center. After popping open the reproducer and removing the two screws I was able to separate
the two sides of the sound box and noticed that the screws were set in two semi-circle slots that would allow for the type of adjustment that you're having issue with.

Again, I'm not sure if the reproducers are similar in this regard but maybe your reproducers have the same screws visible through the mica? If you want, I can take some pictures of my disassembled reproducer?
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Torjazzer
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Re: Brunswick double-stylus reproducer

Post by Torjazzer »

Hope some pics might help...
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The lateral position
The lateral position

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Torjazzer
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Re: Brunswick double-stylus reproducer

Post by Torjazzer »

The vertical position.
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The vertical position.  Note the stylus is pointing to the left.  Also, I don't have a sapphire stylus to properly demonstrate yet.
The vertical position. Note the stylus is pointing to the left. Also, I don't have a sapphire stylus to properly demonstrate yet.

gramophoneshane
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Re: Brunswick double-stylus reproducer

Post by gramophoneshane »

I assume the bottom section of the reproducer should turn so that the stylus is facing forward (in line with the tonearm).
However, if the pot metal has swollen, it may not rotate as it should, so dont force it or it might cause damage.
I've never done one of these, so others who have can probably guide you through getting it operational again, but generally speaking, anything made of pot metal that has a tight joint needs to be loosened with care and patience, and lots of penetrating oil. If the joint can be dismantled, it's usually best to separate the two pieces and very lightly sand any high spots that are causing the joint to bind.

I'm not sure if you've seen the operating instructions for the ultona, but here's a link just in case you haven't.
http://www.nipperhead.com/old/brult04.htm

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Torjazzer
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Re: Brunswick double-stylus reproducer

Post by Torjazzer »

gramophoneshane wrote:I assume the bottom section of the reproducer should turn so that the stylus is facing forward (in line with the tonearm).
However, if the pot metal has swollen, it may not rotate as it should, so dont force it or it might cause damage.
I've never done one of these, so others who have can probably guide you through getting it operational again, but generally speaking, anything made of pot metal that has a tight joint needs to be loosened with care and patience, and lots of penetrating oil. If the joint can be dismantled, it's usually best to separate the two pieces and very lightly sand any high spots that are causing the joint to bind.

I'm not sure if you've seen the operating instructions for the ultona, but here's a link just in case you haven't.
http://www.nipperhead.com/old/brult04.htm
And that's the question: is it supposed to rotate to point straight forward or sit at an angle? If you watch VICTROLAMAN's video here, his stylus sits askew like mine and it doesn't seem right.
http://www.youtube.com/watch?v=Lx3rEEJLbUI

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Mr Grumpy
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Re: Brunswick double-stylus reproducer

Post by Mr Grumpy »

Take a good look at page 5. http://www.nipperhead.com/old/brult05.htm
In Figure 4. (inset) it looks like he's turned the entire soundbox on the tone arm away from the Pathé playing position to the Victor. Then in Fig. 5 he's pushed the stylus bar downwards to point the needle down.

He's some pics of my reproducer, imagine it upside down or that you are the record (be the record)...
For Pathé
For Pathé
For Victor
For Victor


The two slotted screws on either side of center in the reproducer are what I was refering to before (in a horribly cryptic way). As long as the pot metal isn't fudged you should be able to twist it.

Edited: for clarifications
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Torjazzer
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Re: Brunswick double-stylus reproducer

Post by Torjazzer »

Mr Grumpy wrote:Take a good look at page 5. http://www.nipperhead.com/old/brult05.htm
In Figure 4. (inset) it looks like he's turned the entire soundbox on the tone arm away from the Pathé playing position to the Victor. Then in Fig. 5 he's pushed the stylus bar downwards to point the needle down.

He's some pics of my reproducer, imagine it upside down or that you are the record (be the record)...
BrunswickUltona 001.jpg
BrunswickUltona 002.jpg


The two slotted screws on either side of center in the reproducer are what I was refering to before (in a horribly cryptic way). As long as the pot metal isn't fudged you should be able to twist it.

Edited: for clarifications
Thank you for that. I see now what you mean. I think what I must do is disassemble it, as you have done, and treat it with 3-in-1 oil. It certainly does not move as it should according to your example and those in the diagrams.
Many thanks. Steve

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