

Oscillating Rock Shaft for Domestic Machine have a hook that, instead of rotating in a full circle, oscillates back and forth.
(edit with the Customer Reassurance module)
(edit with the Customer Reassurance module)
(edit with the Customer Reassurance module)
Oscillating hook sewing machines have a hook that, instead of rotating in a full circle, oscillates back and forth. In this system, the hook picks up the upper thread from the needle and carries it down around the bottom of the bobbin cage.