Parts of the Bobbin Case Mechanism:
• Bobbin:
A small metal spool that holds the lower supply of thread.
• Bobbin case:
The metal case that holds the bobbin. It has a tension spring that controls the pressure on the bobbin thread. On some machines, the bobbin case is built into the shuttle or rotary hook assembly instead of being in a separate case.
• Bobbin case holder:
A part of the shuttle or rotary hook. It holds the bobbin case in a stationary position so that the bobbin and shuttle can move independently to form the stitch.
• Bobbin case tension spring:
A small spring on the bobbin case that controls the delivery of the bobbin thread.
• Bobbin latch:
A latch on the bobbin case that releases the bobbin from the hook and holds the bobbin in the case.
• Bobbin tension spring screw:
A small screw on the bobbin case that regulates the amount of pressure on the tension spring.
0 Comments