Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . rings. The speed of the rollers in ordinary work is about 6 revolutions a minute, and their capacityis 1,000 dozen of collars and cuffs a day. Fig. 2750 represents a collar-finishing machine. Many of the collars worn at the present day havepoints which are turned down; and as the process of turning down brings that side of the collar intoview which has the less highly finished surface, it is necessary to re-iron the under side of the points. LEAD PENCILS, MANUFACTURE OF. 281 The machin
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . rings. The speed of the rollers in ordinary work is about 6 revolutions a minute, and their capacityis 1,000 dozen of collars and cuffs a day. Fig. 2750 represents a collar-finishing machine. Many of the collars worn at the present day havepoints which are turned down; and as the process of turning down brings that side of the collar intoview which has the less highly finished surface, it is necessary to re-iron the under side of the points. LEAD PENCILS, MANUFACTURE OF. 281 The machine used consists of a plunger-iron heated by the gas-burner, as described in the Wiles ma-chine. Under the plunger and over the bed passes a belt of felting to absorb the moisture, and theplunger is lifted and brought down by pitmans fastened to the crank-pin. The belting is rotated bya beveled gearing moving the length of the bed at each lift of the plunger. The edge is raised on collars and cuffs by means of the machine shown in Fig. 2751, consisting oftwo cold narrow steel rolls, between which the arti
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Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
