. Healthy houses : a handbook to the history, defects, and remedies of drainage, ventilation, warming, and kindred subjects : with estimates for the best systems in use, and upward of three hundred illustrations . on, brick, and behind the perforated front moveableplate is a perforated oblique diaphragm—-a thin, india-rubber hangingvalve being placed between them, which arrests any gust of air fromoutside, and opens automatically to take away the air which hasbeen breathed. 163 Prices of Air Brides, &c,—Louvres. No. 189. No. 190. No. 191. No. 192. 8lx8£ s. d,5 6 No. 193. No. 194. - 11x8 16x9 1
. Healthy houses : a handbook to the history, defects, and remedies of drainage, ventilation, warming, and kindred subjects : with estimates for the best systems in use, and upward of three hundred illustrations . on, brick, and behind the perforated front moveableplate is a perforated oblique diaphragm—-a thin, india-rubber hangingvalve being placed between them, which arrests any gust of air fromoutside, and opens automatically to take away the air which hasbeen breathed. 163 Prices of Air Brides, &c,—Louvres. No. 189. No. 190. No. 191. No. 192. 8lx8£ s. d,5 6 No. 193. No. 194. - 11x8 16x9 12x8^ 16x10^ 12x6 17x13^ 25^x18^ 8 s. d. 4 0 11 A s. 6 s. 0 s. 0 s. d. 8 6 s. 6 s. 0 s. 0 s. 0 B 7 0 10 0 8 0 8 0 C 6 0 9 0, 7 6 11 0 7 0 7 09 0 D 8 0 11 6 9 6 13 0 9 0 A. Plain iron. B. Galvanized. C. Japanned bronze. D Japanned white and gjld. Tor prices of brass fronts or brass trellis, inquire of the makers. Each. No. 195. 11x7 llxll 16x11 s. 6a s. 06 s. 0 Brass front paps. No. 1C6. 11x7 s. 0 Cost, iron. i 2x8 s. 0 15x10 s. 0 Ornamental. No. 197. 9x3x23 s. 6 a common patent at 6s. Cd. b, do. do. at 9s. VENTILATION BY LOUYEES, 201 Louvres are generally of wood, iron, or zinc, and are either fixedfast in the frame, or made to revolve by the action of a rod. A pieceof a louvre-framed roof is shown at Fig. 198, and it is simply theVenetian blind on a Brobdignag scale of inches. A ventilating louvrenear the roof, 16 inches wide, and affording four feet of ventilatingoutlet for each animal, was strongly recommended in the Report ofthe Government Commissioners some little time ago, for adoption instables, &c., where there was no loft or second storey. A small Venetian ventilator, made and sold by Messrs. LTayward,Brothers, is shown at Fig. 199. They are generally fixed immediatelyunder the cornice in the inside of a room, and on the opposite face of theopening outside the wallis inserted an ordinary air-brick
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Keywords: ., bookcentury1800, bookdecade1870, bookidhealthyhouse, bookyear1872
