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Home > Art, Film & Photography > Repertory of Patent Inventions and Other Discoveries and Improvements in Arts, Manufactures and Agriculture (Volume 11, Nos. 69-74)
Repertory of Patent Inventions and Other Discoveries and Improvements in Arts, Manufactures and Agriculture (Volume 11, Nos. 69-74)

Repertory of Patent Inventions and Other Discoveries and Improvements in Arts, Manufactures and Agriculture (Volume 11, Nos. 69-74)


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About the Book

This historic book may have numerous typos, missing text or index. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. 1831. Not illustrated. Excerpt: ... Potent granted to Elihu H. Thomas and Nathan Woodcock, Jirattlebnrough, fFlndham County, Vermont, for an Improvement in the manufacture of Paper by means of a machine called a Pulp Dresser.--Dated August 11, 1830. This improvement consists of a box about two feet square and one foot deep. Inside of the box, near the bottom, is placed a hog, or float-wheel, or agitator, about seven inches in diameter, and as long as will play freely inside of the box. One end of the hog shaft passes through one side of the box, and receives a pulley which is connected with some moving power, so that a rapid motion is given to the hog. Directly on one side, and nearly over the hog, is placed a sieve or screen, on an angle of about 45, with apertures so fine that knots and other offensive particles cannot pass through; but with the agitation caused by the hog, the pulp is allowed to .pass freely when diluted with water. A partition of board is placed on the opposite side of the hog much like the screen; the tops of the screen and partition are united together, when in use, in such a manner as the pulp shall not get through between them. The partition reaches within about two inches of the bottom of the box; the pulp flows in at one end of the box, and passes under the partition, is then washed through the sieve or screen, and flows out at the opposite end of the box through an aperture. The sieve or screen is made of triangular bars of metal, about one-fourth of an inch in width on each angle: these bars are made straight and true, and placed near enough to each other to prevent coarse particles passing through the apertures. These bars may be made circular, and placed perpendicularly or horizontally, with a revolving or vibrating hog, which we conceive to be our principle.-...


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Product Details
  • ISBN-13: 9781235214196
  • Publisher: General Books
  • Publisher Imprint: General Books
  • Height: 246 mm
  • No of Pages: 122
  • Spine Width: 7 mm
  • Width: 189 mm
  • ISBN-10: 1235214192
  • Publisher Date: 01 Jan 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 231 gr


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Repertory of Patent Inventions and Other Discoveries and Improvements in Arts, Manufactures and Agriculture (Volume 11, Nos. 69-74)
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