File:A supplement to Ures Dictionary of Arts, Manufactures, and Mines, - containing a clear exposition of their principles and practice. (1864) (14595138467).jpg

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Identifier: supplementtoures00hunt (find matches)
Title: A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice.
Year: 1864 (1860s)
Authors: Hunt, Robert, 1807-1877
Subjects:
Publisher: New York : Appleton and company
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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g-wheel, /, andcircular-toothed rack fixed on the frame,/. The clay, or brick earth, is filled into themoulds, and the roller, c, presses the same into the moulds as it rolls over them ; i is ascraper which, following the roller, e, removes any excess of clay or brick earth from themoulds ; and J is a smaller roller, which acts as a balance, to prevent the cutter from rising;k is a pressing plate attached to the bar, r, and is raised at the .«;ame time by the lever, d.T!ie roller, e, in its further progress, passes over and presses down the plate, /■, which com-pletes the pressure; c then passes on and presses down the lever, rf, by which all the mov-able bottoms of the moulds will be raised with the bricks or tiles thereon. The whole ofthe pistons and bar, c, are kept up by the stop, /, which works by a spring, and is removedby the treadle, in, as soon as the bricks or tiles are taken away ; n are small rollers, fixedto the frame, o, to which the cutter or scraper is attached. 212
Text Appearing After Image:
For the analyses of the clays of which these and others are constructed, see Clay. Stone Bricka.—These are manufactured at Neath, in Glamorganshire, and are rerymuch used in the construction of copper furnaces at Swansea. The materials of which the bricks are made are brought from a quarry in the neighbor-hood. They are very coarse, being subjected to a very rude crushing operation under anedge stone, and, from the size of the pieces, it is impossible to mould by hand. There arethree qualities, which arc mixed together with a little water, so as to give the mass co-herence, and in this .state it is compressed by the machine into a mould. The brick whichresults is treated in the ordinary way, but it resists a much greater heat than the Stour-bridge clay brick, expands more by heat, and does not contract to its original dimensions.The composition of the three materials is as follows: From Pondrevn.Silica - - - - . V 94-05 . Alumina, with a trace of ox. iron 4-.5,5 .Lime and magnesia F

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Flickr tags
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  • bookid:supplementtoures00hunt
  • bookyear:1864
  • bookdecade:1860
  • bookcentury:1800
  • bookauthor:Hunt__Robert__1807_1877
  • bookpublisher:New_York___Appleton_and_company
  • bookcontributor:University_of_California_Libraries
  • booksponsor:Internet_Archive
  • bookleafnumber:215
  • bookcollection:cdl
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014


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