User Guide Series: Homer and Jean Blair Collection of United States Patent Models - Sewing Machine

ser Guide Series: Homer and Jean Blair Collection of United States Patent Models Sewing Machine

Sewing Machine, U. S. Patent 113,407, April 4, 1871, Alfred S. Dinsmore, Boston, Massachusetts.

This invention is an arrangement of arms and springs that controls the tension of thread in a shuttle-stitch sewing machine. Since the invention is on a production model, it was probably used commercially.

The invention is part of an 18" x 14" x 8" all metal Florence Sewing Machine. The model is painted black with typical sewing machine gold painted decorations. It is in excellent condition and has two partial Patent Office tags.

 

 

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