Author Topic: Western Electric 396A 1915-1920? & dial maintenance instructions  (Read 637 times)

Offline dsk

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Today I got this, and do not know anything about it except from what you see here:
dsk

Offline dsk

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #1 on: October 10, 2017, 02:24:38 PM »
One more pic:

Offline dsk

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #2 on: October 10, 2017, 02:35:16 PM »
Except for the dial, it is working.  When I get time, I will take it apart clean and oil it.  These old dials consists of a great number of parts, so I have to be careful.

Pretty nice for about $63  ;D

dsk

Offline HarrySmith

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #3 on: October 10, 2017, 02:55:32 PM »
Very nice find! Even has the mother-in-law receiver!

My mistake that is the European type wood mounting box!
« Last Edit: October 10, 2017, 03:03:10 PM by HarrySmith »
Harry Smith
ATCA 4434
TCI

"There is no try,
there is only
do or do not"

Offline poplar1

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #4 on: October 10, 2017, 04:10:15 PM »
I believe these were made at Western Electric's Hawthorne (Chicago) factory. Not for use in the USA (because the WE engineers didn't approve of handsets until the A1 handset mounting) but only for export to Europe.
"C'est pas une restauration, c'est une rénovation."--François Martin.

Offline dsk

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #5 on: October 10, 2017, 04:30:03 PM »
That sounds reasonable, and the ringer (1000 ohms) has a bias spring, thet was not so common in Europe, but almost a must in the USA.
During the war WE made phones for the occupied BTMC.

dsk

Offline Ktownphoneco

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #6 on: October 10, 2017, 05:45:00 PM »
Arwin  ...  That's a very nice telephone you've acquired.         I'm not sure whether this BTMC dial repair document will help you with the dial cleaning and service you plan on doing with the dial on this telephone, but I'm attaching it to this reply for information purposes.

Jeff Lamb
     

Offline dsk

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #7 on: October 11, 2017, 04:58:22 AM »
Thank you Jeff, that dial manual was the right one! I have not adjusted anything yet, but so far I have just done the lubrication part, and wil try to test how the make break ratio looks, and if I have got an OK speed.

dsk

Offline dsk

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #8 on: October 11, 2017, 05:31:18 AM »
I have measured by using Audacity and calculated a little.
Even when it has a little bad vibration on dial return, I will not try to adjust anything more as long as it dials OK for my PAX.

As you see the pulses looks reasonable equal and the speed and ratio is a little outside what is standard.


dsk


PS You may hear it ring: https://soundcloud.com/d_s_k-2/ringing-at-25-hz-eb-drum-exchange 
DS


« Last Edit: October 11, 2017, 06:20:50 AM by dsk »

Offline TelePlay

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #9 on: October 11, 2017, 06:16:31 AM »
That is a very clean waveform. All those parts in that dial make for excellent break/make definition.

What did you come up with for PPS?

Offline dsk

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #10 on: October 12, 2017, 02:42:11 PM »
I have just got my wife's approval (local authority) of reasonable sound quality so it may be placed in our living room connected to my sxs PAX (drum selector designed around 1920, probably built in 1946) If I can I like to keep my phones in use. ;)


dsk

Offline dsk

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Re: Western Electric 396A 1915-1920? & dial maintenance instructions
« Reply #11 on: October 12, 2017, 04:14:52 PM »
Her is a scan of the dial center, looks professional and typical Norwegian: