Sewing Machine Prototype. The arm casing has been removed from the machine to show the inner workings, but is part of the machine, not a separate object. Received U.S. Patent No. 2,561,643 in 1951.
CC0 Usage Conditions ApplyClick for more information. The papers document independent inventor Solomon Adler's work with sewing machine technology through correspondence, photographs, notes, drawings, ...
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