Hello, here is the patent for the Faraday Unipact bell, it’s in PDF format.
US2344523.pdf (620.7 KB)
If anyone ever gets a better quality image of that page, please post it.
Enjoy,
Ed Burnett
The next attachment is a catalog page from a site selling the complete catalog, but I was able to get one page; not the best quality, but it does mention Unipact bells and signals.
