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Image from web page 137 of “Lumber, its manufacture and distribution” (1922)
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Identifier: lumberitsmanufac00bryauoft
Title: Lumber, its manufacture and distribution
Year: 1922 (1920s)
Authors: Bryant, Ralph Clement, 1877-
Subjects: Lumber Lumber trade — United States
Publisher: New York Wiley
Contributing Library: Earth Sciences – University of Toronto
Digitizing Sponsor: MSN
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on the earth. Thefire pit is sometimes surrounded by water as an further measureof fire protection. The refuse is brought from the rear finish of the mill by an endlesschain conveyor which is supported on a wooden or steel trestle andwhich usually runs at appropriate angles to the main axis of the sawmill.When a wooden trestle is utilised that portion nearest the fire is madeof metal plates and overhangs the fire, the finish becoming supported bycables or braces which are attached to an overhead framework in therear of the fire wall. 110 SAWMILL Gear If feasible, it must be situated so that the path of prevailingwinds is away from the buildings. This sort of burner is a greaterfire hazard than an enclosed 1, but it is more closely watched on thataccount and consequently the hazard is lowered. It is in commonuse at plants in rural sections exactly where ample space is accessible for build-ings, but it is not utilized in cities or in areas exactly where the buildings mustbe closely grouped. ,!■■ £l~E P!
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Fig. 83.—An Open Refuse Burner with a Wire Screen Fire Wall. Enclosed Burners. These are of three types, namely, a steel-jacketed, brick-linedcylindrical shell, Fig. 84 a so-called air-cooled steel shell, Fig. 85and a brick shell. The 1st variety has a cylindrical shell produced from steel boiler platesand is lined with two courses of frequent brick and one course of fire-brick from the base upward for 15 feet with a single course of com-mon brick and one particular course of firebrick from 15 feet to 40 feet with onecourse of firebrick from 40 to 75 feet and with frequent brick fromthat point to the leading. The foundation is made of brick or concrete and has a solid centralcore several feet in diameter on which the fuel rests and an outer baseon which the burner itself rests. A single or double row of wedge-shaped grates spans the gap among the central core and the founda-appropriate. From three.five to 4 square feet of grate surface per thousandboard feet of mill output are necessary in a burner for a massive sawmil
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Image from page 194 of “Domestic architecture of the American colonies and of the early republic” (1922)
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Identifier: domesticarchite00kimb
Title: Domestic architecture of the American colonies and of the early republic
Year: 1922 (1920s)
Authors: Kimball, Fiske, 1888-1955 New York. Metropolitan Museum of Art. Committee on Education
Subjects: Architecture, Domestic Architecture, Colonial
Publisher: New York, C. Scribner’s Sons
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries
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ries of studies with oval saloons on axis whichare exceptional for rich mixture of components of varied shape.1 In other homes where the saloon had not a complete elliptical or circular kind, ithad none the much less a semicircular or segmental finish forming a projecting bay. Thiswas frequent in Soanes Plans (1788). One of Jeffersons ideal studies shows 1 The most ambitious is published by G. Brown, Architectural Record, vol. 6 (1896), p. 64. Other folks are amongthe Thornton papers in the Library of Congress, Manuscripts Division. 168 Homes OF THE EARLY REPUBLIC the kind.1 His disciple, Robert Mills, used it in the Wickham (Valentine) housein Richmond, 1812. In Boston it was employed by Alexander Parris in the househe designed for David Sears in 1816 (figure 127). Occasionally an octagonal or semi-octagonal room was the central projecting fea-ture. Jefferson continued often to employ it: in styles believed to be forWoodberry Forest, Orange County, Virginia, the estate of William Madison, 1793,two
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Front a photograph by Frank Cousins Figure 129. The Octagon, Washington. William Thornton, 1798 to 1800 in these for rebuilding Shadwell, 1800-1803, for Poplar Forest as originally proposed,and that of Barboursville, 1817.3 The scheme also occurs numerous occasions in the idealstudies which Jefferson produced, probably during his return voyage to America in1789.four Bulfinch also utilized it, as we have observed, in the Morton property, 1796. The use of curved components on the exterior was not confined to emphasis on acentral saloon toward the garden. The splendid home begun by LEnfant for Rob- 1 Kimball, Thomas Jefferson, Architect, fig. 225. 2 Cf. ib., p. 56. The drawing reproduced there as fig. 171 has been believed to be for this house. If so,it was modified in execution, not to speak of later remodellings. 3 lb., figs. 173, 185-192, and 205-206 respectively. 4 lb., figs. 217-224, 230. 169 AMERICAN DOMESTIC ARCHITECTURE ert Morris (figure 128), 1793-1801, had end pavilions with curved faces, analo-gous to t
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