Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 619
orrugated flues is an independentheat generator in itself and contributes its proportionateamount of warm air, which readily takes the nearestheat conducting pipe. By capping over two or more of the flues with thepatented Positive Cap Attachment, and extending aheat conducting pipe therefrom, the… … SECTIONAL VIEW, KELSEY HEATER Showing Flue Construction, Inside and Outside Casings,Direct and Indirect Draft and Positive Cap Attachment overthe Flues, through which warm air is forced to distant rooms. The flow of warm air to the rooms so connected can be shut off at any time by means of the…
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