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#46551 - 12/26/04 04:28 PM Did the USA ever use round-pin plugs?  
SvenNYC  Offline
Member
Joined: Aug 2002
Posts: 1,691
New York City
When I was younger, I saw surface-mount porcelain receptacles like these being sold in local hardware stores here in New York.

[Linked Image]

The one I have is made in the U.S.A. by the old Eagle Electric Mfg. (now Cooper Wiring Devices).

Another one I have lying about is imported from People's Rep. of China.

It can accomodate a roun-pin plug (4-mm pins) like the ones used in Europe or a standard flat-pin plug.

Were round-pin plugs ever used in the USA, or is this just a universal type socket that can be sold in any part of the world?

The hardware store owner said they were called "barn receptacles". Anyone else ever seen these?


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#46552 - 12/26/04 07:31 PM Re: Did the USA ever use round-pin plugs?  
sparked  Offline
Member
Joined: Sep 2003
Posts: 114
Raleigh
To me, it looks like the round "pin holes" are actually rivets to hold the two halves together. Did you check for continuity between terminal screws and those holes?

(Edited: )
As for the "Barn Receptacle" part, perhaps it's called that becasue its surface mount, i.e. it wouldn't be used in a finished area?


[This message has been edited by sparked (edited 12-26-2004).]


#46553 - 12/26/04 08:21 PM Re: Did the USA ever use round-pin plugs?  
Bjarney  Offline
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Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
 
One vague equivalent may have been a “roaster-cord” 2-wire connector mating to round male pins on kitchen-countertop cooking appliances — top of page at www.cooperwiringdevices.com/catalog/PDF/SECTION_U/U_6_CWD_Cord_Sets.pdf ISTR there may have been two {or possibly three} different pin spacings. By then, ‘space-age Bakelite’ versions upstaged porcelain.


#46554 - 12/26/04 08:35 PM Re: Did the USA ever use round-pin plugs?  
hbiss  Offline
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Joined: Dec 2003
Posts: 886
Hawthorne, NY USA
I remember those in bakelite. I too think those holes are just rivets to hold the thing together.

-Hal


#46555 - 12/26/04 08:58 PM Re: Did the USA ever use round-pin plugs?  
SvenNYC  Offline
Member
Joined: Aug 2002
Posts: 1,691
New York City
Yes, there is continuity between the terminals and those holes.

The round holes indeed show rivets that hold the contacts to the porcelain body.

It's still kind of amazing that I can use these receptacles with either American or European type plugs.


#46556 - 12/26/04 09:10 PM Re: Did the USA ever use round-pin plugs?  
Bjarney  Offline
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Joined: Apr 2002
Posts: 2,527
West-Southern Inner-Northeast ...
  
It may be a smaller planet than we realize. Remember Hutch’s 9/04 Siberian adventure?

[Linked Image]

Discussion: http://electrical-contractor.net/ubb/Forum9/HTML/000689.html




[This message has been edited by Bjarney (edited 12-26-2004).]



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