Sweet’s indexed catalogue of building construction for the year 1906 (1906)
New York : Chicago : Architectural Record · leaf 573
Fig. 5. THE A. & J. BASE AND COIL Fic. 6. FULL HOUSING 45° DISCHARGE BHiWl-R to fit fan shaft, and is provided with steel T arms securely cast in place. To thesearms, steel blade plates are attached, which in turn are bolted or riveted to the coni-cal side plates. The shaft is supported in…
Building materials
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