A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . Of course, sizing in the pulp or in the engine offers many advantages; but asgjlatiue, or animal size, which is really essential for all good writing (lualities, cannot at[iresent be employed during the process of manufacturing by the machine without injury tothe felts, it becomes necessaiy to pass the web of paper, after it has been dried by thecylinders, through this apparatus. In most cases, however, the paper is at once guided as it issues from the machine,t
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . Of course, sizing in the pulp or in the engine offers many advantages; but asgjlatiue, or animal size, which is really essential for all good writing (lualities, cannot at[iresent be employed during the process of manufacturing by the machine without injury tothe felts, it becomes necessaiy to pass the web of paper, after it has been dried by thecylinders, through this apparatus. In most cases, however, the paper is at once guided as it issues from the machine,through the tub of size, and is thence carried over the skeleton drums .shown, inside each ofwhich are a number of fans rapidly revolving; sometimes there are forty or fifty of thesedrums in succession, the whole confined in a chamber heated by steam. A pa[)er-machinewith the sizing apparatus attached, sometimes measures, from the wire-cloth where thepulp first flows on, to the cutting machine at the extremity, no less than one thousand advantage of drying the paper in this manner over so many of these drums is, that it. turns out much harder and stronger, than if dried more rapidly over heated ;o:ne tnanufacturers adopt a peculiar process of sizing, whicii in fact answers very nuichbetter, and is alike api)lical)le to papers made by hand or l)y machine, provided the latterdescription be first cut into i)ieces or siieets of the required dimensions. The contrivanc;consists of two revolving felts, l)etween which the sheets arc carried under several rollersthrough a long trough of size, being afterwards hung up to dry ui)on lines, previously to 89G PAPER, MANUFACTURE OF. rolling or glazinjj. The paper thus sized becomes much harder and stronger, ])y reasonsof tlio freedom with wliich the sheets can contract in drying ; and this is mainly the reasonwhy paper made by hand continues to l)e so nmch tougher than that made by the machine,iu consequence of the natur
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
