Automatic sewing machines

Details Automatic sewing machines Automatic sewing machines

1983-06-21

1984-05-08

Hunter, H. Hampton

Sewing

Special machines

Darning

112220, 112221, 112303, D05B 2100, D05B 5514

Patent

active

044468024

ABSTRACT:
An automatic sewing machine is provided with a workpiece feeding device for imparting a continuous motion to the workpiece during the sewing cycle and with a sewing head having a needle bar which is oscillatorily driven by an arm shaft via a crank gear. In order to reduce the needle deflection due to the continuous workpiece feed motion in a simple way, in addition to the crank gear for driving the needle bar, there is interposed a double crank gear between the arm shaft and the crank gear which reduces the angle of rotation while the needle penetrates the workpiece.

REFERENCES:
patent: 159006 (1875-01-01), Williamson
patent: 444758 (1891-01-01), Leslie

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