Frister & Rossmann
http://www.sewalot.com/frister_rossmann.htm
http://www.sewmuse.co.uk/frister.htm
http://needlebar.org/main/survresult...ann/index.html
http://ismacs.net/fristerandrossman/home.html (This includes a link to the downloadable manual)
We have one a little earlier then yours, and a later one (1925) that was one of the first machines to have a full reverse, and one of the last to have the "extra bob" on the needlebar drive. (this was the makers of the day trying to simulate the tug that a seamstress would give to each stitch, later dropped for cost savings once folks no longer needed to be convinced to use a machine)
The later one also has an egyptian motif that included a topless sphinx, leading to it's name as "the naked lady" machine.... lol