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#184395 - 02/09/09 04:08 PM Old Square D Switch  
Admin  Offline

Joined: Oct 2000
Posts: 3,460
My grandfather was an electrician. He just found and gave me this old disconnect made by square D .

The enclosure is made of porcelain. Has patent info on back for patent Oct 27 1914, 1916 and 1919 Says "making electricity safe for everyone" on front.

This is definetly before my day, anyone know anything about this era equipment?

- Jim K.

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#184396 - 02/09/09 04:13 PM Re: Old Square D Switch [Re: Admin]  
Admin  Offline

Joined: Oct 2000
Posts: 3,460
My apologies to Jim.

I just found these in my Email folder and have apparently been sitting on them for about 8 Months blush


#185928 - 04/05/09 12:12 AM Re: Old Square D Switch [Re: Admin]  
packrat56  Offline
Joined: Mar 2008
Posts: 76
MT, U.S.
Nice find, didn't know square D was around then.

I have a sense of adventure, I just keep it leashed with common sense.

#185933 - 04/06/09 01:01 AM Re: Old Square D Switch [Re: packrat56]  
Rewired  Offline
Joined: Jan 2006
Posts: 558
Hamilton, Ontario, Canada
A porcelain enclosure??? Perhaps this switch was intended for use in a hostile environment of some kind??


#185934 - 04/06/09 09:34 AM Re: Old Square D Switch [Re: Rewired]  
ghost307  Offline
Joined: May 2005
Posts: 921
Chicago Illinois USA
I picked up a few porcelain outlet boxes a few years ago.
My guess is that at the time it was cheaper to make porcelain than metal. Also, since many people were scared of this new fangled electricity, they probably would have felt safer with touching something non-conductive.


#185941 - 04/07/09 12:18 AM Re: Old Square D Switch [Re: ghost307]  
JBD  Offline
Joined: Jul 2001
Posts: 599
Square D started around 1905 as a merger between a fuse company and Detroit switch.
In those days electrical equipment was almost all open knife blades. Detroit started to put their knife switches in enclosures thereby make them Safety Switches. They put an embossed letter D, in a square, on the front of their switches. After awhile people began asking for that 'Square D' switch, so the company name was changed to Square D.

Last edited by JBD; 04/07/09 12:18 AM.

#185944 - 04/07/09 10:45 AM Re: Old Square D Switch [Re: JBD]  
mamills  Offline
Joined: Nov 2001
Posts: 745
Wharton, Texas, USA
That's an interesting little bit of history on Square D. I've always wondered how the Square D name came to be. Thanks.


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