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Upper Parts of a Lockstitch Machine by Ana Maria Laspona is a document available to read on EtoBox.

The upper parts of a sewing machine are composed of the head, arm, and bed. The head is the complete sewing machine without a cabinet or stand. The arm is the curved part containing the mechanism for operating the needle. The bed is the flat portion beneath which the feed dog and shuttle are mounted. Key parts in the arm include the spool pin for holding thread, thread guide for positioning thread, presser bar lifter for moving the presser foot, and tension mechanism for controlling stitch tightness. The ne

Author

Ana Maria Laspona

Language

EN