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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment

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Old 10th Sep 2011, 9:38 pm   #1
johnmarshmanagain
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Default Old telephone trouble

Hi,

My 60's/70's style rotary dial phone has stopped dialling out!

As you spin the dial, the dialling tone just persists. Dodgy contact somewhere or bad wire ?

Advice appreciated.
Thanks, J.
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Old 10th Sep 2011, 11:13 pm   #2
russell_w_b
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Default Re: Old telephone trouble

Might be related to this thread here: https://www.vintage-radio.net/forum/...ad.php?t=73681

Has your telephone provider ceased loop-disconnect? Do other LD telephones work on your line? Does your LD telephone work elsewhere?

Can you hear faint pulse-clicking as you dial? Can you maintain a loop by clicking on the cradle switch (but don't tap out 1-1-2 or you'll get the emergency services if LD does indeed still work on your line)?
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Old 16th Sep 2011, 11:17 pm   #3
johnmarshmanagain
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Default Re: Old telephone trouble

Hi,

Because it seemed inconsistent I doused the dialler mechanism with Servisol, which did the trick!

Cheers, jm.
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Old 5th Nov 2011, 1:32 am   #4
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Default Re: Old telephone trouble

That dial won't last long then!
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Old 5th Nov 2011, 8:59 am   #5
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Default Re: Old telephone trouble

Now you know, it is mechanical. Servisol, CRC.... does the job fine short term basis. It cleans, and oils temporarily. To do this it contains a mix that may harm some parts.
Clean with spirits; (rinse with some meths). Dry off, let dry, and use the most thin oil you have in bearings and where the gears are in touch with each other.
"Sewing machine oil" is OK. Don't use too much.

dsk
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Old 5th Nov 2011, 6:24 pm   #6
siaynoq
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Default Re: Old telephone trouble

You may find this page of interest. GPO's 'Maintenance of No.12 dials' With full instructions what to wash (and with what) and what to oil (and how much, *little)
http://www.britishtelephones.com/tel%20auto%20b5125.htm
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Old 6th Nov 2011, 10:43 am   #7
Herald1360
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Default Re: Old telephone trouble

Good luck finding some 23SWG wire

I suppose the GPO used odd gauge wire along with odd BA size screws
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Old 6th Nov 2011, 7:00 pm   #8
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Default Re: Old telephone trouble

23 SWG is equivalent to 0.6 mm. diameter, or 20 amp fuse wire.
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Old 17th Nov 2011, 9:31 pm   #9
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Default Re: Old telephone trouble

Quote:
Originally Posted by ajs_derby View Post
23 SWG is equivalent to 0.6 mm. diameter, or 20 amp fuse wire.

Rings a bell - isn't 0.6mm = 6lb/mile, yep, certainly is - that's why the GPO specified it, it's the stripped core of internal cable (8w/6w/4w) just miced a bit.

Probably way back in the distant past some GPO engineer needed something fine and what came to hand was that.
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