File:Annual report of the Regents (1900) (14776608384).jpg

Identifier: annualreportof5421900newy (find matches)
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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arekept slightly separated by putting small pieces of clay betweenthem. The first row of brick on top of the arch is called the tiecourse, and the first 14 courses, including the tie course, above thearch are called the lower bench , and the rest of the courses aboveare called the upper bench . When the arch and lower andupper benches have been set, brick are laid flat over the top of thekiln; this is the ^^ raw platting; and then on top of this is laidburnt bricks at right angles to those of the raw platting, which isthe burnt platting ^\ Hanging from the roof of the kiln shedat the same level are a number of bricks which serve as a guide forhight in building the kiln. A wall of two thicknesses of double-coal brick is put around the outside of the kiln, scoving the kilnit is called, and this is daubed over with mud. The daub is toprevent any air entering except through the doors. The latter con-sist of an iron frame about 14 inches high, with an iron plate to tr-ee a;fcf. ci 0) a o H
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a ■«-> < fl • C3 m <U cc ;a OS p dj ~* A <u ^ W) -^ d ^ fl be (fl o <D ^ ;-i ;q ^ <D CO 3 r5 O c3 fO bX) 1^ 3XJi^ (13 ra ^ (1. ■;: i^ -3 50?: CLAYS OF NEW YORK 67; close the opening; the frames are set in the courses of double-coalbrick, at the bottom of the arch on both sides of the kiln. Double-coal brick have six or seven times as much coal dust in them asothers and are used for placing aroimd the outside of the kilns.The combustion of the coal in them, the manufacturer claims, sup-plies the necessary amount of heat to the outer portion of the kilnswliach are not sufficiently heated by the arch fires. Double-coalbricks sell for about $2.50 a thousand, and usually bear some dis-tinguishing stamp, but they are not as strong as the other brick. Ittakes two setters and four wheelers about one dav to set an arch of35,000 brick; two men will daub the outside of a 15 arch kiln inone day. Haidng walled-up the kiln with double

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