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 113
ACHINERY levers in the rock-shaft that, while balancing each other, the pressers can be separated to take out orinsert a hat-roll, or be brought together by a weight on the hand-lever. The pressers arc actuatedfrom the main shaft, two cams on which operate the beaters. On each beater is a… … a gradual increase of the weight which presses the rollers or pressers together, and a similar increaseof the t«-ii-i<>■ 1 of the heater-spring, the action of tin- machine is adjusted as the felting progresses. Some grades of hats are sheared before the sizing or felting is finished, in order…
Mechanical engineering -- Dictionaries
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