Thank you for the pictures. I initially thought it was a Davis, based on the needle plate and stitch length on the bed. However, I didn't see any with the front inspection plate on the pillar. I then looked at the New Royal B and there are more similarities to that machine. Yours has a little different head shape than the one shown at
http://needlebar.org/nbwiki/index.php/Illinois
Your machine is missing the thumb screw for the stitch length regulator.
Janey - Neat people never make the exciting discoveries I do.
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