I wasn't able to find a manual for the treadle rotary, but did find some references to one for an electric model. It should be helpful for threading. I'm not sure, but since the electrics are direct drive, but I think the hand wheel will turn clockwise.
http://silkmothsewing.blogspot.com/2...g-machine.html
https://amandawynn.com/2015/06/17/se...edge-rotary-b/
Janey - Neat people never make the exciting discoveries I do.
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