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Author Topic: Can someone identify this device?  (Read 165 times)

Thobbs

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Can someone identify this device?
« on: November 07, 2023, 02:13:09 pm »
I found this device at a local antique store today and was wondering if anyone here could help me identify it.  It appears to be homemade with copper wire wrapped around a wooden frame that is graduated in size.  There are two red and two black terminals on the other side as well as the white object that is shown on the front.  The brass arm rotates around the device and contacts the wires with a small brass ball.  There are two of these arms one on each side and they move independently of each other.  The copper wire goes through the wood and connects to  the terminals.  I didnít buy it and I only have this one photo.  Any ideas?  Thanks for the help. Depending on what it is I may go back and get it.

Stoker

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Re: Can someone identify this device?
« Reply #1 on: November 07, 2023, 02:36:57 pm »
From what I can see, and from your description, it seems that it could be some form of variable resistance device, possibly a rheostat or potentiometer.

In that configuration, I would suggest it was set up for experimentation rather than use as a component in some electrical circuit.
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Thobbs

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Re: Can someone identify this device?
« Reply #2 on: November 07, 2023, 02:47:07 pm »
Excellent! Thank you sir.

MasonvilleEngines

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Re: Can someone identify this device?
« Reply #3 on: November 07, 2023, 03:21:13 pm »
Homemade radio receiver?


jbodkin

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Re: Can someone identify this device?
« Reply #4 on: November 08, 2023, 08:28:16 am »
This is a crystal radio.  You can see the 'cat's whisker' detector with the gelena crystal on the bottom of the picture.  The coil of wire is the station tuner.

Thobbs

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Re: Can someone identify this device?
« Reply #5 on: November 08, 2023, 05:15:45 pm »
Very good thank you!

D E Jones

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Re: Can someone identify this device?
« Reply #6 on: December 03, 2023, 01:23:28 pm »
I also guessed crystal radio. That sure is a nice one .
D. E. Jones

 

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