Model: 091 Sewing Machine
This is the lock stitch type machine. To show complete operation, material for sewing must operate through the machine. As the needle goes through the material, the foot bar presses foot down. When the needle rises and draws thread up through material the foot rises and the toothed feeder under foot advances material the required distance for next stitch. On first operation, when needle goes downward through material, the loop of thread is caught by revolving thread hook, which pulls the thread taut in the material. Repeating of this cycle, produces a series of stitches continuously along a desired line. Desired length of stitch is regulated by feed adjustment.
[Virginia Downward & William M. Clark, 1930]

[Editor’s Note: Textile machines were one of the major applications of kinematic mechanisms in the 18th and 19th centuries. The personal sewing machine became popular in the 19th century. Issac M. Singer received and American patent for a sewing machine in 1851. FCM]

Francis Moon 2005-00-00

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