On one of the pictures it's stamped type J. Does that mean anything?
I found this too:
[h=3]Free Sewing Machine Co. Est 1895 – 1953.Factory: Rockford, Illinois.
Presidents: William C. Free 1897 - 1921, A. E. Johnson 1928
Formerly:
Illinois Sewing Machine Co. 1890 – 1894.
Factory: Chicago & Rockford, Illinois.
Merged with:
New Home Sewing Machine Co. 1927.
Merged with:
National Sewing Machine Co. 1953.
Machines Made:
The Free Models 4 & 5
Will C. Free
Model C
New Royal Models H, K 1897, P, L 1928.
Rotary
The Free 1926
The Free Westinghouse 1926
Rockford 1937[/h]