Hi,
@Dale13
No one else has replied yet, so I thought I would.
I can confirm its a J 1931 Westfield produced bike. It's rare in that they didn't produce mant that year, and very few of those have survived (in fact, this is the only 1931 I have listed at the moment).
It seems to be mostly, or all, original parts, cetainly the chainwheel, stand etc. are.
Westfield produced bikes under many names, and it could be this is one that they bought when part of the American Bicycle Co. trust at the beginning of the century.
They contiued using the name occasionally, here's a 1950's Westfield Hudson:
www.nostalgic.net
www.nostalgic.net
If I come across anything else, I'll let you know.
Best Regards,
Adrian