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Old Square D Switch #184395 02/09/09 04:08 PM
Joined: Oct 2000
Posts: 3,634
Admin Offline OP
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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Re: Old Square D Switch [Re: Admin] #184396 02/09/09 04:13 PM
Joined: Oct 2000
Posts: 3,634
Admin Offline OP
My apologies to Jim.

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


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

I have a sense of adventure, I just keep it leashed with common sense.
Re: Old Square D Switch [Re: packrat56] #185933 04/06/09 01:01 AM
Joined: Jan 2006
Posts: 558
Rewired Offline
A porcelain enclosure??? Perhaps this switch was intended for use in a hostile environment of some kind??


Re: Old Square D Switch [Re: Rewired] #185934 04/06/09 09:34 AM
Joined: May 2005
Posts: 984
ghost307 Offline
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.

Re: Old Square D Switch [Re: ghost307] #185941 04/07/09 12:18 AM
Joined: Jul 2001
Posts: 599
JBD Offline
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.
Re: Old Square D Switch [Re: JBD] #185944 04/07/09 10:45 AM
Joined: Nov 2001
Posts: 745
mamills Offline
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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