UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Kellogg wall phones

dagskarlsen · 14th Feb 2018, 9:22 am

Chris, I agree in your opinions, Telephone schematics has been made after local standards, different not only from country to country, but even from make to make. I tried to sketch up how I believe this i meant to be. I did use symbols used in Norwegian schematic from the 50'ies.

Regarding the inductor you have to measure out and make the diagram yourselves, this is my guess based on experience of what was common in the US around WWii. This kind of generator/inductor could have one end of the winding to frame of the generator, the other comes out of the end of the shaft close to the switching contacts, maybe in direct contact to one. I took some pictures of an old magneto from the same time, this one has been in a Norwegian phone, and will probably have a slightly different switch.

I'm not sure about the make, does the induction coil on the door has any text?

dsk

14th Feb 2018, 9:22 am	#15
dagskarlsen Heptode Join Date: Jan 2008 Location: Hakadal, Norway Posts: 643	Re: Kellogg wall phones - need help Chris, I agree in your opinions, Telephone schematics has been made after local standards, different not only from country to country, but even from make to make. I tried to sketch up how I believe this i meant to be. I did use symbols used in Norwegian schematic from the 50'ies. Regarding the inductor you have to measure out and make the diagram yourselves, this is my guess based on experience of what was common in the US around WWii. This kind of generator/inductor could have one end of the winding to frame of the generator, the other comes out of the end of the shaft close to the switching contacts, maybe in direct contact to one. I took some pictures of an old magneto from the same time, this one has been in a Norwegian phone, and will probably have a slightly different switch. I'm not sure about the make, does the induction coil on the door has any text? dsk Attached Thumbnails