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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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18th Feb 2018, 5:24 pm | #1 |
Heptode
Join Date: Aug 2004
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Phones or intercoms?
Were these meant for pbones or intercoms.
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18th Feb 2018, 6:14 pm | #2 |
Dekatron
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Re: Phones or intercoms
Given that it's a DC trember bell and no magneto, I would think they were designed as intercoms.
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18th Feb 2018, 8:00 pm | #3 |
Dekatron
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Re: Phones or intercoms
It resembles the "Manchester Microphone " arrangement shown in the 1893 GEC catalogue, although this section is dated June 1892. The catalogue only shows the hardware: you were referred to a book of instructions (one copy available free to each customer on request, additional copies 6d) that showed how to connect them up.
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19th Feb 2018, 3:35 am | #4 |
Dekatron
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Re: Phones or intercoms
Some useful information in this thread.
https://www.vintage-radio.net/forum/...ad.php?t=84663
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19th Feb 2018, 9:39 am | #5 |
Dekatron
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Re: Phones or intercoms
Yes, these generally operate as intercoms and are powered by local batteries. They are not suitable for connecting to the telephone network!
When "off-hook", pressing the ring button simply places the battery across the line, ringing the DC bell (which is connected across the line when "on-hook") of the remote unit. When both units are off-hook, it would appear that it uses a simple series connection between the transmitters and receivers.
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19th Feb 2018, 10:53 am | #6 |
Heptode
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Re: Phones or intercoms?
It is possible to make an adapter-box with batteries, induction coil, capacitor and relay to get it work as an answering phone on incoming calls, but probably much work for little fun.
dsk |
19th Feb 2018, 12:05 pm | #7 |
Heptode
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Re: Phones or intercoms?
Thank you for the responses, i did think intercoms but was not sure. Someone has put 2 AA battery holders in them but look horrid. Thanks for the replies and links.
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20th Feb 2018, 9:04 am | #8 |
Dekatron
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Re: Phones or intercoms?
Most likely designed as a pair of internal telephones for manager-secretary, doctor-receptionist or similar duty.
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20th Feb 2018, 10:02 am | #9 |
Dekatron
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Re: Phones or intercoms?
There was a set of telephones similar to this in Calthwaite Hall, between Penrith and Carlisle; bits of the wiring still remain. They linked the kitchen to the stables. They, and more sophisticated switchable stations were marketed for use in 'big houses' amongst other places.
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20th Feb 2018, 10:23 am | #10 |
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Re: Phones or intercoms?
Of course, what a lovely idea! Ring... ring... "Ee, cook, we'm busy muckin' out 'Er Ladyship's 'osses and we'm right famished! Can you send some cold beef and a loaf o'bread over 'ere quickly-like?" "I don't send packed lunches out to the likes of you grooms and stable-boys! You'll just have to come to the kitchen to eat, like the rest of the staff! And mind you wipe yer mucky boots!" (Line goes dead)
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20th Feb 2018, 10:33 am | #11 | |
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Re: Phones or intercoms?
Quote:
I need to check in Herbert G. White's 'Telephone Erection and Maintenance' but I'm pretty sure some sets were made specifically to use existing annunciator wiring without too much modification.
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20th Feb 2018, 11:38 am | #12 |
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Re: Phones or intercoms?
Something similar also exists (non-functional) in the museum at the back of the traditional ironmongers (J.B. Banks) in Cockermouth. I did offer to try getting them into working order, but the offer was never taken up.
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20th Feb 2018, 4:20 pm | #13 |
Heptode
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Re: Phones or intercoms?
The circuit is actually pretty equal to the one used one our door telephone system installed about 1980!
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21st Feb 2018, 12:46 pm | #14 |
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Re: Phones or intercoms?
Wheel reinvented- not!
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21st Feb 2018, 8:15 pm | #15 |
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Re: Phones or intercoms?
I thought as much... The first chapter is all about utilising existing bell / annunciator circuits for telephone use. Evidently 'such instruments are in everyday use, and their number is increasing rapidly...' This was October 1922.
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22nd Feb 2018, 8:56 am | #16 |
Hexode
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Re: Phones or intercoms?
I remember, as an apprentice for Telephone Rentals in the 60's, going to Halliday Hall in Clapham South. They had a system there using similar phones to communicate with each room from a manual exchange. At the time it was student accommodation but I read that it was originally a hotel. As it was a while ago I can't say that the phones were identical.
Don m5aky |
23rd Feb 2018, 10:28 pm | #17 |
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Re: Phones or intercoms?
Re #11 etc., see "The servant problem solved .... fixed in a few minutes":- a GEC advert from 1904 for GEEKO intercom telephones for attaching to existing electric bells.
Last edited by emeritus; 23rd Feb 2018 at 10:36 pm. |
24th Feb 2018, 12:14 am | #18 | |
Dekatron
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Re: Phones or intercoms?
Quote:
The instrument mentioned in my book was called a Parlyphone, and was designed to be carried from room-to-room and be plugged into a socket attached to the bell push. Manufactured by the Sterling Telephone and Electric Company, Limited. One of several makes, likely.
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24th Feb 2018, 8:14 am | #19 |
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Re: Phones or intercoms?
My understanding was that it was always a soft "G" - having previously been pronouncing it as one for the geeks - so I'm surprised to see the spelling in the advert. Maybe I was correct to start with!
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24th Feb 2018, 10:16 am | #20 |
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Re: Phones or intercoms?
I was told it was 'Jeekophone' by an ex-STE from Skelton who was involved with the original 'GECophone' telephones on the PAX, and who asked the question. He very kindly gave me an original Skelton GECophone, WWII vintage, from the system.
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