Mechanical movements, powers and devices; a treatise describing mechanical movements and devices used in construcive and operative mechinery and the mechanical arts, being practically a mechanical dictionary (1917)
Hiscox, Gardner Dexter, 1822?-1908 · New York : The Norman W. Henley publishing co. · leaf 388
1577. SEWING-MACHINE, Wilcox & Gibbs model, show-ing the designation of parta 1578. SPRING MOTOR, for sewing-machine. A strong coiled spring and a geartrain, like a clocktrain on a larger scale,geared to the drivingshaft. The pedal ischanged and arrang-ed as a friction stopand speed regulator.…
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.