Patent Model of a Book-stitching Machine

Thompson, Henry G. · ca 1874

This patent model demonstrates an invention for a book-stitching machine which was granted patent number 150495. The machine includes a mechanism to protect needles in book-sewing machines: latches to hold the needles in position and an alarm bell to warn of approaching knots in the thread. Thompson was an inventor and manufacturer in the field of book stitching, stapling and sewing machines who also acquired interests in the inventions of others.