Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 211
Pig. 141. Centrifugal Fan or Blower. … Fig. 143. Illustrating Actionof Centrifugal Fan. TheArrows Show the Path ofthe Air. 170 HEATING AXD VENTILATION 11^ 1 back and surrounding^ them with a steel casin<]j in a simihir mannerto the one shown in Fig. 143. Cone fans are particularly adapted to church and schoolhousework, as they are…
Architecture · Building · Carpentry
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