Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 623
hey have allthe modern improvements, among otherfeatures being the new solid double Up-ward Return Flue Radiator. The furnacesare low in height, adapted for any cellar,and they can be taken through any door. u. ^ cS a> oj 0 Oi 0 « oU ^ -^ rt Scu CO DiamUpper DiamDouRadi as 82 43 inches 36 inches… … Fig. 4. RICHARDSON SEC-TIONAL TUBULAR STEAMBOILERSectional view, showing end section,front water section and ash pit withgrates. The fire has no waste surfaceto heat; all surfaces utilized. Seventy-five per cent, of surface is fire surface;it has a large steam chamber.
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