sewing machine mechanism

What Feed-Dog Specifications Really Tell You About Fabric Movement

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Sewing Machine Feed Dogs

Sewing machine feed dogs are the toothed parts below the presser foot that advance fabric during ordinary machine feeding, but their job makes sense only when they are viewed as part of a timed system. In a common domestic drop-feed arrangement, the feed dogs rise, contact the fabric, travel through the feed stroke, then drop

How Does a Sewing Machine Make a Stitch? One Lockstitch in Seven Phases

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How Does A Sewing Machine Make A Stitch

A domestic lockstitch is formed by a timed sequence, not by the needle simply grabbing bobbin thread. The needle carries upper thread through the material, a loop forms as the needle begins to rise, the hook or shuttle enters that loop, and the upper thread passes around the lower-thread assembly before take-up removes slack and