Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 822
andthe passage of the upper thread through the thread check, tension pullev, thread controller,and take-up, which last is provided with a roller to reduce friction on the thread, and tofacilitate sewing with threads of poor quality. In the •variety stitch machine the loop-taker (or rotary hook) is…
Mechanical engineering
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