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Vintage Telephony and Telecomms Vintage Telephones, Telephony and Telecomms Equipment |
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2nd Sep 2018, 7:21 pm | #1 |
Dekatron
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
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ATM Telegraphy unit dated 1917
Found this on a charity stall at the carboot. At the time I had not noticed the ATM Co Ltd and 1917 engraved on the 'key'. They wouldn't take less then £5 but it looked interesting and should polish up and look good on a wall.
Now I know it is dated 1917, I assume this is 1st world war? It doesn't look like a field unit, anyone know what it would have been used for? I assume the empty space is where the sounder would have been. What would it have looked like? |
2nd Sep 2018, 10:35 pm | #2 |
Dekatron
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Re: ATM Telegraphy unit dated 1917
Do the top terminals also say L and E?
Perhaps used on an "omnibus" circuit for sending either way, identifying the recipient by call sign. |
2nd Sep 2018, 11:26 pm | #3 |
Dekatron
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Re: ATM Telegraphy unit dated 1917
L & E on the bottom, Z & C on the top.
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3rd Sep 2018, 1:10 am | #4 |
Dekatron
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Re: ATM Telegraphy unit dated 1917
Me sir, I know sir!
Zinc and Carbon; negative and positive battery terminals respectively.
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4th Sep 2018, 8:18 am | #5 |
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Re: ATM Telegraphy unit dated 1917
The missing sounder may have looked like this ATM example.
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4th Sep 2018, 9:22 am | #6 |
Heptode
Join Date: Apr 2010
Location: West Midlands, UK.
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Re: ATM Telegraphy unit dated 1917
"The Telegraph Office" web site Foreign Key section give info on a baseboard which looks identical, with sounder and galvanometer, made by Gilbert Bros and used early in WW1.
Mike. |
4th Sep 2018, 1:17 pm | #7 |
Dekatron
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Re: ATM Telegraphy unit dated 1917
A steal at £5 just for the key!
Finding a sounder to complete it may well be a rather different story........... Perhaps the "works" of an old doorbell might do for appearance and some functionality.
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5th Sep 2018, 8:12 pm | #8 |
Dekatron
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
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Re: ATM Telegraphy unit dated 1917
Cleaned and ready to be used as a sound board for the door bell. Done the minimal, cleaned the brass off with Viakal, washing up liquid, then a spray of WD40 leaving whats left of the original varnish. Base given a work over with fine grade wire wool and a white spirit and boiled linseed oil mix followed by beeswax polish.
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6th Sep 2018, 9:57 am | #9 |
Octode
Join Date: Jul 2009
Location: Carmel, Llannerchymedd, Anglesey, UK.
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Re: ATM Telegraphy unit dated 1917
Would the L&E be line & earth?
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