. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Fig. 98 is a section across the groove, the guiding rod /, and the bar of the window m, to which the groove is bolted ; n is the handle of the guide-bar. The window is cast in two pieces; the larger (Fig. 99,) being 2 ft. 10 in. high, by 2 ft. 1 in. broad, and the smaller (Fig. 100,) being 1 ft. 4 in. high, by 1 ft. broad, exclusive of the lead along the bottom and sides, which forms the rebate, and covers the joint. In casting the smaller window, it is essentially necessary
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. Fig. 98 is a section across the groove, the guiding rod /, and the bar of the window m, to which the groove is bolted ; n is the handle of the guide-bar. The window is cast in two pieces; the larger (Fig. 99,) being 2 ft. 10 in. high, by 2 ft. 1 in. broad, and the smaller (Fig. 100,) being 1 ft. 4 in. high, by 1 ft. broad, exclusive of the lead along the bottom and sides, which forms the rebate, and covers the joint. In casting the smaller window, it is essentially necessary that it be somewhat less in dimensions than the space into which it is to shut, in order that it may always move freely. The air is kept out from the room within, not by the tight fitting of the sides of the small window to the sides of the frame, but by the contact of the edges of the sides of the small window with the beads forming the rebates attached to the inside of the frame; and also by means of the contact of the beads, or rebates, of the small window with the edge of the sides of the large one, or frame into which it shuts. In consequence of the sides never touching, the window moves with the greatest ease, whether expanded by heat in summer, or contracted by cold in winter, and weather-painted and and smooth, or unpainted and 100 \ i S V-i-r-r-71 r-io r-™ . a ^ 6 6 :ii> 12IK4 Fig 101 is a horizontal section across the small window and the two side bars, showing the outside beads ^tgg, and the inside beads at h It. 101 S Fig. 102 is a vertical section through the small window, and the top and bottom bars of the fixed frame, showing a weather fillet, or weather table, which projects half an inch from the general face of the window at h, and the staybar in the situation in which it rests when the window is shut, and also the groove and guiding rod at /. The total weight of this window before being glazed is about Gli lbs., and the prime cost in Derby is 12s.
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