Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 116
106 HAT-M AKING MACHINERY. raised to introduce or remove the brim of the hat. A swinging frame contains the shafts of the twoconical feed-rollers, the upper one of which is raised when desired by the treadle; otherwise theweight shown presses it upon the hat. The rollers receive motion from the…
Mechanical engineering -- Dictionaries
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