BRITISH PATENT
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GB 14.328/1852 William Edward Newton
66, Chancery Lane in the county of Middlesex , Civil Engineer
Improvements in Machinery or Apparatus for sewing double-looped stitches
A communication; 6 months. October 19, 1852
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vertical or up and down motion feeding
two needles, two threads,
double chain stitch (Grover & Baker stitch) sewing machine