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Image from page 483 of "Annual report of the Regents" (1889)

Image from page 483 of
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Identifier: annualreportof5421900newy
Title: Annual report of the Regents
Year: 1889 (1880s)
Authors: New York State Museum University of the State of New York. Board of Regents
Subjects: New York State Museum Science
Publisher: Albany : J.B. Lyon, State Printer
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library


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Text Appearing Before Image:
in a kiln and burned. In placing themin the kiln, they are set on edge, and protected from pressure bymeans of fire brick slabs. The company has six kilns. These tile weigh from Y50 to 1300 or 1500 pounds a square, theamount of tile required to cover a space 30 feet square, includingoverlaps. The product of this factory is to be seen on a number of build-ings in various states, but, as examples of their work in ISTew Yorkstate may be mentioned the episcopal church at Ithaca, the highschool at Tarrytown, the Erie railroad depot at Jamestown, and theDairy building, Cornell university. 766 NEW YORK STATE MUSEUM The Alfred clay co. While the chief product of this companyis dry pressed brick, it has recently gone into the manufacture ofroofing tile, but the only style thus far produced by them is ashingle tile, one of the peculiarities of which is that it is made bythe dry press process. The tile is also of the interlocking type,but differs in many respects from that made at Alfred center.

Text Appearing After Image:
CLAYS OF NEW YORK 767 SEWER PIPEClays used The qualities of clay required for this purpose are in generalthe same as those demanded for any ware with a vitrified body.They should therefore be sufficiently plastic to permit moldingwithout cracking; a high tensile strength, while desirable, is notabsolutely necessary. Many clays used in the manufacture ofsewer pipe have a tensile strength as high as 125 or even 150pounds a square inch, while on the other hand shales are usedwhose tensile strength when ground to 30 mesh is not over90 pounds a square inch. The clay should bum to a hard,dense, impervious body; the amount of iron in such clays or shalesis usually sufficient to color it a red, or deep red. The dryingshould be rapid, and the ware should not warp or crack in drying.Owing to the thinness of the body, sewer pipe may be burned morerapidly than paving brick. An excess of fluxing impurities may render a clay so fusible thatin burning it softens and loses shape. It is a very common


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Date: 2014-07-29 19:19:46



bookid:annualreportof5421900newy bookyear:1889 bookdecade:1880 bookcentury:1800 bookauthor:New_York_State_Museum bookauthor:University_of_the_State_of_New_York__Board_of_Regents booksubject:New_York_State_Museum booksubject:Science bookpublisher:Albany___J_B__Lyon__State_Printer bookcontributor:Smithsonian_Libraries booksponsor:Biodiversity_Heritage_Library bookleafnumber:483 bookcollection:biodiversity BHL Collection BHL Consortium

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