Helen Augusta Blanchard (1840-1922)
- patents, 22 of which involved improvements to sewing machines. first zigzag sewing machine. 1873 zigzagger
After developing techniques for zigzag stitching and overseaming, Blanchard moved to Philadelphia, where she established the Blanchard Overseaming Company of Philadelphia to market her inventions in the late 1870s or early 1880s. She also founded the Blanchard Hosiery Machine Company in 1882. She moved to New York in the early 1890s, and continued to patent a variety of inventions, including a pencil sharpener [4] and a hat sewing machine
engineering 4 kids 