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 Post subject: Help. Unknown Radio.
PostPosted: Jun Wed 23, 2021 3:56 am 
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Joined: Feb Thu 21, 2013 2:29 am
Posts: 9
Hello again,

I have what look to be a 20s era kit radio. There is no written information except "MFG under Salisbury Pat". It is a battery supplied radio with 5 tubes one of which is missing. Tubes are left to right - CX301A, CX301A, CX300A, missing, CX301A. Pictures attached. The other knob / rheostat is inside.

Any help pointing me in the right direction would be greatly appreciated

DW.


Attachments:
File comment: Front Panel
IMG_20210622_214112537.jpg
IMG_20210622_214112537.jpg [ 511.69 KiB | Viewed 520 times ]
File comment: Radio Front Full
IMG_20210622_214058375.jpg
IMG_20210622_214058375.jpg [ 529.36 KiB | Viewed 520 times ]
File comment: Radio inside from top
IMG_20210622_214122743.jpg
IMG_20210622_214122743.jpg [ 593.81 KiB | Viewed 520 times ]
File comment: MFG under Salisbury Pat text
IMG_20210622_214129872.jpg
IMG_20210622_214129872.jpg [ 646.15 KiB | Viewed 520 times ]
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 Post subject: Re: Help. Unknown Radio.
PostPosted: Jun Wed 23, 2021 9:56 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 27529
Location: Detroit, MI USA
If this is the correct Salisbury, he had a large number of radio related patents. However the earliest I can find record of was issued in 1932, several years after this particular radio was built.

https://www.smecc.org/winfield_w__salisbury_patents.htm

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Dennis

Experience is what you gain when the results aren't what you were expecting.


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 Post subject: Re: Help. Unknown Radio.
PostPosted: Jun Wed 23, 2021 10:05 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 2279
Location: Monroe, NC 28112 USA
If dat don't beat all.... Can never recall seeing that tube holder scheme! Seems to be a regen with antenna tuning and two? fixed RF stages....

Looking forward to a pix of the bottom of the chassis.

Robert


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 Post subject: Re: Help. Unknown Radio.
PostPosted: Jun Wed 23, 2021 10:07 pm 
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Joined: Feb Thu 21, 2013 2:29 am
Posts: 9
Thanks guys, when I get home I'll load up more pictures.


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 Post subject: Re: Help. Unknown Radio.
PostPosted: Jun Wed 23, 2021 11:30 pm 
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Joined: Sep Thu 14, 2006 3:27 pm
Posts: 14313
Location: Carmel, Indiana
I'm guessing that whoever manufactured this radio, did so without paying any Armstrong patent royalties and, therefore, purposely withheld from identifying themselves in either a brand name or name of manufacturer.

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Michael Feldt
www.indianaradios.com


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 Post subject: Re: Help. Unknown Radio.
PostPosted: Jun Thu 24, 2021 2:04 am 
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Joined: Feb Thu 21, 2013 2:29 am
Posts: 9
Here is the underside. After putting the missing rheostat back, it seems to have a tube socket as well. Ive worked on several period radios and never seen anything like this.

DW


Attachments:
File comment: Chassis underside
IMG_20210623_195938195.jpg
IMG_20210623_195938195.jpg [ 569.28 KiB | Viewed 343 times ]
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 Post subject: Re: Help. Unknown Radio.
PostPosted: Jun Thu 24, 2021 2:57 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 2279
Location: Monroe, NC 28112 USA
Congratulations! The more photos you provide, the LESS I understand this :D

Seems like there is maybe one spiderweb coil transformer missing?

Choose a quiet afternoon with your favorite beverage and try to trace the circuit.....

You still have my curiosity.

Robert


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 Post subject: Re: Help. Unknown Radio.
PostPosted: Jun Thu 24, 2021 5:12 pm 
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Joined: May Sat 30, 2015 11:49 pm
Posts: 1772
Location: Keystone Heights, FL, USA 32656
Strange indeed. It looks to me like it has been disassembled and not quite put back together. Example: Why are the battery plates upside down? EDIT*** never mind. I see the plates attach to the back of the radio.*** Some of the tube contacts appear to have nothing attached (#2 tube from the left, plate contact).

Feels like some parts are missing. Another photo from the top with the 6th socket installed, please? Can you do a higher resolution so we can blow it up some more?

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Jeff
“Nothin’s worth nothin ‘till somebody wants it.”—Irv Metter


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