Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 223
a direct- or belt-connected electric motor.Fig. 148 shows a fan equipped with a direct-connected motor, andFig. 151 the general arrangement when a belted motor is used. Thesefans are largely used for the ventilation of toilet and smoking rooms,restaurants, etc., and are usually mounted in a wall… … iPig. 148. Propeller Fan Dlreet-Connected to Motor. Fans of this kind are often connected with the main vent fluesof large buildings, such as schools, halls, churches, theaters, etc.,and are especially adapted for use in connection with gravity heatingsystems. They are usually run by electric…
Architecture · Building · Carpentry
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