File:A supplement to Ures Dictionary of Arts, Manufactures, and Mines, - containing a clear exposition of their principles and practice. (1864) (14781527362).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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cistern in which it is agitated, a, wooden lever, having its axis at f ; n, piece of wrought-iron bolted to end of lever a, whilst its upper end passes freely through a slot opening inlever n, and having two shoulder projections c ; e, axis of lever d ; g, bars connected withlever d, supported on axle e, and from which the iron rods h ii deiiend ; j, rectangularsieve ; k, under hutch ; l, shoot for overflow of water ; m, receptacle for retaining any fine,Vor,. III.—.54 850 ORES, DRESSING OF.
Text Appearing After Image:
ORES, DRESSING OF. 85) ore which may escape with the water from l, as well as for receiving the hutchwork. Aboy placed near the end of lever a, by the action of leaping, jerks it smartly up and down,so as to shake effectually the sieve j. Each jolt not only makes the fine part pass throughthe meshes, but changes the relative position of those which remain in the sieve, bringingthe purer and heavier pieces eventually to the bottom. The mingled fragments of ore andstony substances lie above them, while the poor and light pieces are at the top ; those arefirst scraped off by the limp, then the mixed portion, and lastly the ore, which is usually car-ried to the ore heap. The sieve frame may be made 2x4 feet inside and 8 to 9 inchesdeep The hutch should then be 5 feet long, 3^ feet wide, and 4; feet deep, constructed ofgood deal boards 2 inches thick. The quantity of stuff which a boy can jig in ten hourswill depend upon several circumstances. With a sieve six holes to the square inch and

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https://www.flickr.com/photos/internetarchivebookimages/14781527362/

Author Hunt, Robert, 1807-1877
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Flickr tags
InfoField
  • 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:853
  • bookcollection:cdl
  • bookcollection:americana
Flickr posted date
InfoField
30 July 2014


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current07:08, 8 September 2015Thumbnail for version as of 07:08, 8 September 20151,490 × 2,950 (685 KB)Fæ (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': supplementtoures00hunt ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fsupplementtoures00hunt%2F fin...

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