It appears there was a furniture dealer in Wisconsin that sold Free-Westinghouse machines. It appears that the lowest lever is to drop the feed dogs. Interestingly the manual says that to embroider or darn, that one should lower the feed dogs and use a special plate. The lever above the zigzag width is the needle position. The lever under the zigzag width is the drop feed. I'm not completely positive, but it looks like the knob on the side is to lock the width of zigzag, so that it can be changed to different widths while sewing, to make more decorative stitches.
Janey - Neat people never make the exciting discoveries I do.
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