Electrical news and engineering . ft, rear view of hospital call switch. At rightj illustration showinglinen cord which the patient uses for pulling the switch on, and buttonabove it which the nurse uses for pushing the switch off. switches and receptacles and the switches and the plates arejnade singly or in gangs. The new device may be used on anystandard lighting circuit of 125 volts or less. The General Railway Signal Company. Rochester. issued Bulletin dated March. 1919. describing theirAbsolute Permissive Block System Circuits. A number ofinteresting diagrams are included
Electrical news and engineering . ft, rear view of hospital call switch. At rightj illustration showinglinen cord which the patient uses for pulling the switch on, and buttonabove it which the nurse uses for pushing the switch off. switches and receptacles and the switches and the plates arejnade singly or in gangs. The new device may be used on anystandard lighting circuit of 125 volts or less. The General Railway Signal Company. Rochester. issued Bulletin dated March. 1919. describing theirAbsolute Permissive Block System Circuits. A number ofinteresting diagrams are included and fully described. April 15, 1919 THE ELECTRICAL NEWS 41 Lighting and Battery Charging Set With the HB lighting and battery charging set, thegarage that does not have electric current available fromany public plant can make its own electric light and at thesame time have the power necessary to handle the profitablebusiness of recharging- automobile storage batteries. Thegenerator is a specially wound machine, 110 volts, direct. current, speed 1800 weight 300 pounds. It operatesfrom line shaft or engine, requiring 4 at full load. Itsupplies ample capacity for brilliant lights at low cost, andit will recharge at one time from one to six 6-volt autostorage batteries or their equivalent. The HB lighting andbattery charging set is furnished complete in every respect,ready to belt to engine and operate. It includes generator,base tracks, field rheostat, charging panel, and pulley with6-inch diameter and 4-inch face. No switchboard is neces-sary. Made and sold by Hobart Brothers Company. Troy,Ohio. Electrically Operated Portable Bench Saw The portable bench saw illustrated below is manufactur-ed by the T. D. Wallace Company of Chicago. It is equipped
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidelectricalnewsen28donm
