19th century Russian thread winder.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...r_fullsize.jpgSwifts had to open and shut in the same way as an umbrella. The axis spoke or central rod facilitates this movement. The strips are joined with steel rings, and a thumbscrew set on the lower shaft keeps the swift in the desired position. A skein of silk thread or tapestry yarn was wrapped tautly around its extended frame, which would then rotate as the thread was wound around a sewing spool.
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