56E PX/4 [?] Bell. - UK Vintage Radio Repair and Restoration Discussion Forum

ThePillenwerfer · 16th Nov 2011, 6:02 pm

I recently got this bell in a job lot of telephone equipment and was wondering if anybody has any information on it?

The only thing that could be a model number is "56E PX/4" stamped in white on the back.

Each coil has a resistance of 2.2kΩ. The two resistors which can be seen on the rear view are 270Ω and 2.2kΩ.

- Joe

Herald1360 · 16th Nov 2011, 6:34 pm

That looks like a DC operated trembler bell of some sort, though it might function on the usual AC ringing signal. Maybe from some internal phone system?

ThePillenwerfer · 16th Nov 2011, 7:08 pm

I wondered that but it looks like a Post Office, or other government thing, and the capacitor seemed a strange thing to include if it wasn't for a 'phone of some type.

Thanks

- Joe

AndiiT · 16th Nov 2011, 7:43 pm

Hi,
Try here

The capacitor and resistor(s) fitted will be for spark quenching of the trembler contacts.

Regards
Andrew

ThePillenwerfer · 16th Nov 2011, 8:30 pm

Thanks very much. That web-site is well worth knowing about.

Cheers

Joe

16th Nov 2011, 6:02 pm	#1
ThePillenwerfer Octode Join Date: Mar 2011 Location: Sheffield, South Yorkshire, UK. Posts: 1,453	56E PX/4 [?] Bell. I recently got this bell in a job lot of telephone equipment and was wondering if anybody has any information on it? The only thing that could be a model number is "56E PX/4" stamped in white on the back. Each coil has a resistance of 2.2kΩ. The two resistors which can be seen on the rear view are 270Ω and 2.2kΩ. - Joe Attached Thumbnails __________________ "Experts are only good at one thing: explaining why something will not work!"

16th Nov 2011, 6:34 pm	#2
Herald1360 Dekatron Join Date: Feb 2007 Location: Leominster, Herefordshire, UK. Posts: 16,535	Re: 56E PX/4 [?] Bell. That looks like a DC operated trembler bell of some sort, though it might function on the usual AC ringing signal. Maybe from some internal phone system? __________________ ....__________ ....\|____\|\|__\|__\_____ .=.\| _---\__\|__\|_---_\|. .........O..Chris....O

16th Nov 2011, 7:08 pm	#3
ThePillenwerfer Octode Join Date: Mar 2011 Location: Sheffield, South Yorkshire, UK. Posts: 1,453	Re: 56E PX/4 [?] Bell. I wondered that but it looks like a Post Office, or other government thing, and the capacitor seemed a strange thing to include if it wasn't for a 'phone of some type. Thanks - Joe __________________ "Experts are only good at one thing: explaining why something will not work!"

16th Nov 2011, 7:43 pm	#4
AndiiT Octode Join Date: Aug 2005 Location: Saltburn-East, Cleveland, UK. Posts: 1,786	Re: 56E PX/4 [?] Bell. Hi, Try here The capacitor and resistor(s) fitted will be for spark quenching of the trembler contacts. Regards Andrew

16th Nov 2011, 8:30 pm	#5
ThePillenwerfer Octode Join Date: Mar 2011 Location: Sheffield, South Yorkshire, UK. Posts: 1,453	Re: 56E PX/4 [?] Bell. Thanks very much. That web-site is well worth knowing about. Cheers Joe __________________ "Experts are only good at one thing: explaining why something will not work!"