Nancy,
I found you another machine! I think this is one of the Davis Vertical Feed machines.
http://sacramento.craigslist.org/atq/2066077651.html
If the machine is a vertical feed and if you don't own one of these, you may want to go after this one. I understand that they are nice for sewing on bindings, sewing with flannels, and thick layers.
This one looks like it take the Boyle needles while the younger of these Davis Vertical Feed takes a 15x1.
http://www.kelsew.info/domestic/davisVFmodels.html
So many interesting vintage machines out there, and all would be fun to play with. :)