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Knight's Mechanical Encyclopedia (ed. Knight), P. (search)
interior of the making cylinders through hollow journals. John Cowper, England. Rag-mill comprising endless feeder which feeds the material to fluted rollers that deliver it to a toothed rotating cylinder. J. F. Jones, Rochester, N. Y. Machine by which a number of continuous webs may be made, or they may be united to form pasteboard. M. L. Keen, Roger's Ford, Pa. Pulp-boiler with perforated diaphragm, discharge pipe and valve for blowing out the contents under pressure. Ladd and Walsh, New York. Boiler for treating fibers with or without alkali, having a perforated diaphragm for keeping the mass submerged during the process. The Fourdrinier machine, as improved by Bryan Donkin and subsequent inventors, is illustrated in Fig. 1, Plate XXXVII. That shown, built by George Bertram of Edinburgh, is what is known as an 80-inch machine, that is, the endless web of wire cloth on which the pulp flows is 80 inches wide and 33 feet length, capable of forming paper over 6 feet