A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . weight, and regulates the height of the pot, while the foreman pours the metal into themoulds B, fixed in the frame c, which runs on wheels in a tramway. Three pieces of planediron form two moulds, as shown in fig. 441, where D„ Eg, f,o, show the form of these planedpieces, and the manner of placing tllem together. The bars are solidified immediately, andwhen all the moulds have been filled, they are taken to pieces and the bars plunged intocold water, with the
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . weight, and regulates the height of the pot, while the foreman pours the metal into themoulds B, fixed in the frame c, which runs on wheels in a tramway. Three pieces of planediron form two moulds, as shown in fig. 441, where D„ Eg, f,o, show the form of these planedpieces, and the manner of placing tllem together. The bars are solidified immediately, andwhen all the moulds have been filled, they are taken to pieces and the bars plunged intocold water, with the same object as in the case of silver. From the bars obtained from eachpot, two pieces are cut off for assaying, by the non-resident assayers, the bars being num-bered according to the pot from which they were poured, and lettered distinctively, accord-ing to the dav on which they were melted. Should the assay prove unsatisfactory, the metalis adjusted and remclted if the assays are satisfactory, the bars are forwarded to the coin-ing depot. In the coining department the first operations are performed in the rolling room, whic
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
