Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 602
n to iron, perfectly true and tight, and secured by a straightbolt passing from front to rear on the top of the heater, and on each side at the bottom. The low-down construction of Imperial Boilers and the absence of headers admit of their use in low cellars withoutthe necessity of a pit. Continued… … The Imperial Round Boilersare designed for comparatively smallheating plants in residences, green-houses, etc., and for heating waterfor swimming pools, bath rooms,laundries, etc., where sectional boil-ers would be too large and expensive.We claim that this boiler is all directfire surface, and…
Building materials
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