Author Topic: switchboard part? need identification  (Read 765 times)

Offline RotaryOne

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switchboard part? need identification
« on: November 15, 2015, 10:44:24 AM »
Hello forum members,

I'm unsure where I should post this.  Is this part of a switchboard?  It measures about 4" x 1 1/4" and 1/4" thick.   It looks like lamps connect to it and can be screwed into a panel.   Stamped 30C and it looks to be bakelite.
Any information is appreciated.
« Last Edit: November 16, 2015, 09:00:41 AM by RotaryOne »

Offline RB

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Re: switchboard part? need identification
« Reply #1 on: April 24, 2017, 02:07:28 PM »
Hi.
No wizard here, but could that be a plate for the op set to plug into? just a guess...

Offline Babybearjs

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Re: switchboard part? need identification
« Reply #2 on: April 24, 2017, 02:26:32 PM »
whats the backside look like?
John

Victor Laszlo

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Re: switchboard part? need identification
« Reply #3 on: April 24, 2017, 06:55:28 PM »
It holds either lamps or keys, and is used on a PBX equipment frame.  Lots of different possibilities for the designations.  Here are some examples:

BY = busy

R = release

T =

H = hold

The backside looks like the front side, except for holes that accept the mounting screws for the individual lamps/keys/buttons.

Note the OCD of the Bell System in requiring FOUR (!!!) # 6 FH machine screws to resist earthquakes.
« Last Edit: April 24, 2017, 06:57:55 PM by Victor Laszlo »