Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 573
SON CO. 502 VENTILATING AND DRYING APPARATUS A. & J. FANWHEEL. a perfect system of ventilation as well as a model heating system. This arrangement(Fig. i) is particularly adapted to schools, churches, theatres, libraries and all publicbuildings. The arrangement shown in Fig. 2, is used to a… … Fig. +. THE A. & J. BASE. handling large volumes of air at a moderate speed. This style of fan can be readilychanged to suit conditions, such as moving a smaller volume of air at high pressure,in which case the wheel would be much smaller in width, or vice versa, when a largevolume or low…
Building materials
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