1940s silk spinning machines.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...s_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...g_machines.jpg
Previously:
https://www.homemadetools.net/forum/...126#post172388
https://www.homemadetools.net/forum/...292#post116250
https://www.homemadetools.net/forum/...907#post160180
https://www.homemadetools.net/forum/...461#post135645