. The book of the garden. Gardening. Fig. ployed in affording bottom heat to pine- beds, &c, and forms, as in figs. 241, 242, and 243, laid flat, in- creasing or dimin- ishing the number of plates, according to the heat required. Fig. 241 is the sim- plest of these modes, which is here shown in plan ; fig. 242 is a modification of this form of heat- ing surface, having a corrugated or zig- zag outline ; but as the corrugations cause each plate to occupy a greater width, there is no space saved nor ad- vantage gained by this alteration in the form of surface. A better arrange- ment th
. The book of the garden. Gardening. Fig. ployed in affording bottom heat to pine- beds, &c, and forms, as in figs. 241, 242, and 243, laid flat, in- creasing or dimin- ishing the number of plates, according to the heat required. Fig. 241 is the sim- plest of these modes, which is here shown in plan ; fig. 242 is a modification of this form of heat- ing surface, having a corrugated or zig- zag outline ; but as the corrugations cause each plate to occupy a greater width, there is no space saved nor ad- vantage gained by this alteration in the form of surface. A better arrange- ment than the last has been used, simi- lar to that shown at fig. 241, but having thin parallel projections cast on the outsides of the plates, which in- creases the heating surface obtainable in a given space in the proportion of 4 to 2, or twice as much as compared with pipes. This is shown in plan, fig. 243. Mr Haden has patented a sharply corrugated form which he gives to these pro- jections— see side view, fig. 244. This is intended to the bring air more immediately into contact with the hot surfaces, by passing it up through. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original McIntosh, Charles, 1794-1864. Edinburgh and London, W. Blackwood
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectgardening, bookyear18
