A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . nder pressurefrom leaking out. After a certain quantity of oil or oleaginous matters have been expressedfrom vegetable or animal substances, the remaining portions which they contain are moredifficult to obtain, and we therefore treat the oil in combination witli the substances in whichit is contained in the following manner:—The aforesaid , after coming from theoil-press or mill, are mixed with as much warm water, or water slightly impregnated withal
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . nder pressurefrom leaking out. After a certain quantity of oil or oleaginous matters have been expressedfrom vegetable or animal substances, the remaining portions which they contain are moredifficult to obtain, and we therefore treat the oil in combination witli the substances in whichit is contained in the following manner:—The aforesaid , after coming from theoil-press or mill, are mixed with as much warm water, or water slightly impregnated withalkaline matter, as will reduce them to a semi-fluid state. They are then to be operatedupon in the apparatus last described. For this purpose the handles p p are turned round,and the boss k withdrawn from its opening, while the boss k, which is miich longer, willstill close the lower aperture. The semi-fluid materials are then put into the basin n, andfall from thence into the vessel n ; when it is fully charged the rod k is again lowered intothe position shown in the figure. The communication with the hj-draulic press pnmp is. OILS. 819 then made by means of a cock attached to the pump, from which the water flows* throughthe pipe R into the vessel b, and thus with a few strokes of the pump the whole of the con-tents of the vessel b will be subjected to the requisite pressure. An interval of a few min-utes is then allowed for the combination of the oil and water, and tlic cock s is then opened,and a small portion of the tiiiid contents of the vessel allowed to escape into the cistern. Thepressure being thus relieved, the handles p p are to be again turned so as to lift the rod k suffi-ciently high to withdraw the boss k from the lower opening; the contents of the vessel bwill then How out into the cistern a, and the boss k.^, being again lowered so as to close thelower aperture, the refilling of tlie vessel may take place for another operation. The pres-sure thus brought upon
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
