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Member's Forum More old mains sockets removed
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Related

More old mains sockets removed

Workshopshed
Workshopshed 7 months ago

Just swapped out these old sockets. Never seen anything quite like the bottom one. The earth was wrapped around a plate rather than having its own screw terminal.

image

I searched up the patent.

https://patents.google.com/patent/GB449631A/en

449,631. Plug couplings. ARNOLD, C. L., and DOWSETT, R. W., and MK. ELECTRIC, Ltd., Wakefield Street, Edmonton, London. Fab. 12, 1935, No. 4495. [Class 38 (i)] A socket fitting has a protector 8 that covers the supply sockets 2 and is moved in a plane by the earthing-pin 9a after it has entered its socket 3 so as to uncover the sockets 2. The projection 6a enters the socket 3 below its entry end and a guide 6b slides in holes in the socket 3 and in a plate 4a attached thereto, a spring 7 acting to keep the protector normally in the position shown. In modifications the sliding protector is furnished with a pair of limbs guided on parallel rods and interengaging with a similar pair of fixed limbs supporting the rods, springs being inserted between the limbs, or it may be guided in a channel in the base or in a cap thereon.

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Top Replies

  • DAB
    DAB 7 months ago +5
    When I moved into my house about 38 years ago, the first thing I did was upgrade the house for 200 amp service.
  • rsc
    rsc 7 months ago +3
    I worked on a friend's very old house with single fabric-coated solid wires strung between insulators in the basement. every time I touched a wire, some of the wire coating would crumble and fall off.…
  • electronicbiker
    electronicbiker 7 months ago +1
    I have never seen one of those either. The logo has "MK" in it, so it is probably well over-engineered. I've read the patent description and I think I can see how it is supposed to work but I'd like to…
Parents
  • phoenixcomm
    phoenixcomm 7 months ago

     Workshopshed imageonly thing I can say is thank god I dont live in the UK! 220 mains~ that will kill you if you get wrapped up in it. I have been bitten by US mains (120) and Im still here!! When I lived in Asbury Park I lived in a Victorian, and did rehab on it. First problem was Knob and Tubing, then no safety ground, ouch. This pic from my house in Farmers Branch, North Dallas. The SOB used a doubled up single box and had the wires bare going from one box to another.  Plus the ground wire, bare-bright copper ground never went to the send box. I don't think the switches had grounds. But the use of the two boxes instead of double gang and the stunt with the wires where VERBOTEN!.  

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  • kmikemoo
    kmikemoo 7 months ago in reply to phoenixcomm

     phoenixcomm Don't forget the shared neutral that was commonplace up to about 2011.  You can still get bit by the grounded circuit conductor - even if the breaker is open - on a shared neutral system. Angry

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  • phoenixcomm
    phoenixcomm 7 months ago in reply to kmikemoo

     kmikemoo Not in new construction, But it did happen to me twice. once when I lived in Princeton, NJ. the  house used Wire-mold  (metal) all around the house the problem that he assumed the metal stayed a 'good" ground!! when I use the metal conduit or Wire-mold I always with out exception a bare-bright!!! The other time I was living in LA by the beach but worked for Hughes Aircraft. I was doing both sustaining engineer of the Satellite ATE, and support in the High Bay where we worked on the birds there were normally about 8 or so in the bay at any one time  and my lab was connected the high bay they used to come to me with problems, They had a brand new hp spectrum analyzer that was rack mounted and It would not say running it would reboot and when they got it back from test equipment repair, the problem persisted. So I was asked to look at it as they really needed the beast. well I plugged it in put an antenna  on it and listened to FM!! The next day it was still running so I told them to come and get it, and it passed with flying colors. later that day they came back and told me it rebooted again. I grabbed my Fluke and went to the high bay. I opened the back of the rack it was a maze of alligator clips and wire! I basically said WTF! And while leaning on the rack with one hand and the other on the clip. Well I got knocked to the floor. I told them I would return a little later and pulled out the 100a pull-out. I went upstairs to my boss and told him what happened, I told him what I thought was wrong, he promptly agreed.  I grabbed a 100a lock-out device, and called the guy in charge of the gantry crane!  Remember I was doing sustaining? I was for the ATE's Power Controller unit which was under the floor! Meanwhile back on the floor as my jack-stands appeared (floor was about 10x10') and the crane started moving Flight came down to find out what the hell I was doing. as my boss was over flight as we controlled the high-bay I told him to call my boss. At that time we attached the rings to the ATE system and started to lift it. The RF-guy came over and ask the same thing he said I would damage the wave guide. so I told him to uncouple it. I got the box opened up and saw was the ass-holes did. In the Box there Is a 100A breaker, and a 100+A RFI filter. CAN YOU GUESS WHAT WAS WRONG! Should be Pull-Out, RFI  Filter, Circuit Beaker... NOPE they had in Pull-Out, Circuit Beaker, RFI Filter. and one side shorted to ground.. I went upstairs to my office and grabbed out of a new box the RFI-Filter, and Circuit Breaker. Replaced them both and check to system, shut it down and REMOVED THE RATS NEST of Gator Clips!! ~~ Cris BTW each one of the ATE in the bay was Inspected half where wired wrong!!

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  • phoenixcomm
    phoenixcomm 7 months ago in reply to kmikemoo

     kmikemoo Not in new construction, But it did happen to me twice. once when I lived in Princeton, NJ. the  house used Wire-mold  (metal) all around the house the problem that he assumed the metal stayed a 'good" ground!! when I use the metal conduit or Wire-mold I always with out exception a bare-bright!!! The other time I was living in LA by the beach but worked for Hughes Aircraft. I was doing both sustaining engineer of the Satellite ATE, and support in the High Bay where we worked on the birds there were normally about 8 or so in the bay at any one time  and my lab was connected the high bay they used to come to me with problems, They had a brand new hp spectrum analyzer that was rack mounted and It would not say running it would reboot and when they got it back from test equipment repair, the problem persisted. So I was asked to look at it as they really needed the beast. well I plugged it in put an antenna  on it and listened to FM!! The next day it was still running so I told them to come and get it, and it passed with flying colors. later that day they came back and told me it rebooted again. I grabbed my Fluke and went to the high bay. I opened the back of the rack it was a maze of alligator clips and wire! I basically said WTF! And while leaning on the rack with one hand and the other on the clip. Well I got knocked to the floor. I told them I would return a little later and pulled out the 100a pull-out. I went upstairs to my boss and told him what happened, I told him what I thought was wrong, he promptly agreed.  I grabbed a 100a lock-out device, and called the guy in charge of the gantry crane!  Remember I was doing sustaining? I was for the ATE's Power Controller unit which was under the floor! Meanwhile back on the floor as my jack-stands appeared (floor was about 10x10') and the crane started moving Flight came down to find out what the hell I was doing. as my boss was over flight as we controlled the high-bay I told him to call my boss. At that time we attached the rings to the ATE system and started to lift it. The RF-guy came over and ask the same thing he said I would damage the wave guide. so I told him to uncouple it. I got the box opened up and saw was the ass-holes did. In the Box there Is a 100A breaker, and a 100+A RFI filter. CAN YOU GUESS WHAT WAS WRONG! Should be Pull-Out, RFI  Filter, Circuit Beaker... NOPE they had in Pull-Out, Circuit Beaker, RFI Filter. and one side shorted to ground.. I went upstairs to my office and grabbed out of a new box the RFI-Filter, and Circuit Breaker. Replaced them both and check to system, shut it down and REMOVED THE RATS NEST of Gator Clips!! ~~ Cris BTW each one of the ATE in the bay was Inspected half where wired wrong!!

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