Dating antique sewing machines
They introduced a new model, the Family Rotary, or FR, which was a very well designed and strong machine, in the late 1890's and manufactured this design, with some variations, up until WW II.
It is quite possible that Lord Prince's plans might have worked.The following White numbers were verified through the company.You will note that there are irregularities in the stated sequences.White took over the Domestic and King sewing machine companies and eventually became White Consolidated Industries. There is one serious consideration as to the VS machines... The shuttle has a post in it, and the bobbin has a hollow core.They ceased manufacturing in the United States sometime after WWII, probably the late 60's or early 70's. The bobbin is loaded into the shuttle by sliding onto the post.
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Neither we nor the company have any explanation for this.