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 Post subject: EWC Phonograph carriage restoration
PostPosted: Sat May 05, 2018 9:59 am 
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Victor I
Joined: Wed Jul 30, 2014 9:34 am
Posts: 142
Location: Spain
Hi all,

I've been asked to restore the carriage of this beautiful EWC phonograph.
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The carriage is made out of pot metal and has swollen, cracked and falling in pieces making this machine otherwise in pristine state unusable.
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It's also missing the swivelling connector for the reproducer and the sliding tube is an heroic restoration attempt done with several pieces of a telescopic antenna.
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I dismantled it to see what could be saved and start taking some measurements.
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Then I took all the necessary dimensions from the phonograph and drawed the necessary pieces that I need to fabricate. I will use the Bengali reproducer I restored some weeks ago.
As you can see, The red piece is the pattern of the reproducer, the pink one is the swivelling arm with the tongue for raising the reproducer and the green outlined one is the carriage.
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It's going to be a very nice project!

I have materials to do more that one so if anybody else needs one please pm me as it will be always cheaper to do a small run than doing a one off.

Best regards,

Pedro Martínez


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 Post subject: Re: EWC Phonograph carriage restoration
PostPosted: Mon May 07, 2018 8:04 am 
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Victor O
Joined: Tue Nov 13, 2012 6:57 pm
Posts: 85
Hello Pedro , PM sent!


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 Post subject: Re: EWC Phonograph carriage restoration
PostPosted: Wed May 16, 2018 9:52 am 
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Victor I
Joined: Wed Jul 30, 2014 9:34 am
Posts: 142
Location: Spain
Finally some progress on the carriage!

So after taking all the measurements and figuring out the procedure to build the carriage, I transferred the measurements to a piece of brass.
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Then I started the long process of chain drilling it to make a very rough piece. I could have asked to make it with a CNC mill but it was expensive and It somewhat makes no sense to me to use CNC repairing a +100 years old machine.
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Then a 12mm hole was drilled and reamed to hold the sliding tube.
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Some files and much elbow grease turned the perimeter smooth and nice.
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It's still thicker that needed but I will take care of that.
A first test to check all the dimensions turned out very well.
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That's all for today. Next steps is to thin the main body and fabricate the lower "ear" that holds the roller and the upper tube for the reproducer and horn.

Stay tuned!

Regards,

Pedro Martínez


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 Post subject: Re: EWC Phonograph carriage restoration
PostPosted: Wed May 16, 2018 11:05 am 
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Victor II
Joined: Fri Jan 06, 2012 6:22 am
Posts: 299
Looking good !


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 Post subject: Re: EWC Phonograph carriage restoration
PostPosted: Wed May 16, 2018 7:44 pm 
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Victor O
Joined: Sun Jul 30, 2017 5:28 pm
Posts: 62
Location: Deltona FL / Brampton ON
Pedro, PM sent need one also.

Herman


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 Post subject: Re: EWC Phonograph carriage restoration
PostPosted: Mon May 28, 2018 12:38 pm 
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Victor I
Joined: Wed Jul 30, 2014 9:34 am
Posts: 142
Location: Spain
Finally some more progress!

This weekend I focused on the tube of the carriage. I didn't found a brass tube of the correct diameter and thickness so I opted to turn it from a solid bar.
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It was roughly turned to the desired outer diameter and then bored. The inside is quite tricky because it has a tappered portion a small paralel section in the middle and the a much wider section on the side that the swivelling tube for the reproducer goes.
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Then the outside was finished
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And it is starting to look like the real thing!
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Stay tuned for more updates soon!

Regards,

Pedro Martínez Díaz


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 Post subject: Re: EWC Phonograph carriage restoration
PostPosted: Sun Jun 03, 2018 1:34 pm 
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Victor I
Joined: Wed Jul 30, 2014 9:34 am
Posts: 142
Location: Spain
4th chapter of this restoration.

The main body of the carriage needed to be thinned to 8,2 mm so I milled it and sand it till I reached the desired thickness:
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Then I set up the compound carriage of the lathe to be able to cut the conical internal part of the tube:
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After milling a slight curve on the body to make a perfect fit for the tube I soldered it:
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I'm really happy how it turned out!
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Next step will be reproducing this small "ear"
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Stay tuned for new updates!!

Best regards,

Pedro Martínez


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 Post subject: Re: EWC Phonograph carriage restoration
PostPosted: Mon Jun 04, 2018 4:49 am 
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Victor II
Joined: Fri Jan 06, 2012 6:22 am
Posts: 299
Pedro,
It's looking really good ! I am enjoying seeing you re-create this complex part. Can't wait for the next episode !!


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 Post subject: Re: EWC Phonograph carriage restoration
PostPosted: Mon Jun 04, 2018 9:16 am 
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Victor V
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Joined: Thu Aug 19, 2010 9:36 am
Posts: 2371
Location: Delaware
Always great to watch a wizard at work. Thanks for letting us be part of this.

Andreas


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