Illustrations of the theory and practice of ventilation : with remarks on warming, exclusive lighting, and the communication of sound (1844)
Reid, D. B. (David Boswell), 1805-1863 · London : Longman, Brown, Green, & Longmans · leaf 276
by /, as indicated ge-nerally by Fig. 174. Fig. 174. m ^ y? 595. Hot-water apparatus is made in an endless variety offorms according to the purpose to which it is to be applied, andthe circumstances Under which it has to be constructed. In Fig.175, a represents the boiler, b the flow-pipe, c the… … of water from a cold-water cistern, e a smaller tube by which anyair accumulating in the upper tube, and impeding the circulation,may be discharged. In Fig. 176, a indicates the boiler, b ahot-water reservoir, in which any air expelled from the water iscollected, c the glass-gage, e, e, e, lateral…
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