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 115
104 HAT-MAKING MACHINERY. … 2303. Blocking.—Fig. 2303 rep- resents the Eickeineyer handhat-blocking machine, whichoperates as follows: A hatpreviously stretched on thetip, side-crown, and brim isclamped on the outer edgeand expanded to the desiredsize. Thirty-six clamping-tongs are pivoted to the lopplate, in an oval line…
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