How is a sewing machine operated?
The needle pushes the thread down through the material, forming a loop that catches on a hook on the shuttle. The loop wraps around the bobbin thread as the needle pulls the next section of thread back up through the material. … This kind of automatic stitching with two threads instead of one is called lock stitch.
When did they stop making treadle sewing machines?
The design has naturally changed over the years with advances in technology. Electric motors and bolt-on lights were introduced to the machines in 1921, and the treadle tables gradually faded away to chunky box bottoms in the 1930s.