. Electrical news and engineering . generators of the inductor two phase type,the latter being belted directly to the engines. The oldwooden single phase board was replaced by a new fire-proof two phase board designed to distribute current forlight and power from the same circuit. QUESTIONS AND ANSWERS. H. K., Walkerville, Ont., writes: What kind ofsafety valve would you recommend for a stationaryboiler—a lever valve or a spring or pop valve ? Answer.—A lever valve is recommended for simp-licity, and also for efficiency. It should be carefullyset, and the weight absolutely fixed in posi
. Electrical news and engineering . generators of the inductor two phase type,the latter being belted directly to the engines. The oldwooden single phase board was replaced by a new fire-proof two phase board designed to distribute current forlight and power from the same circuit. QUESTIONS AND ANSWERS. H. K., Walkerville, Ont., writes: What kind ofsafety valve would you recommend for a stationaryboiler—a lever valve or a spring or pop valve ? Answer.—A lever valve is recommended for simp-licity, and also for efficiency. It should be carefullyset, and the weight absolutely fixed in position so itcannot move. The valve should also be operated nowand again, both by raising steam to blowing point, andalso by hand at lower pressures, in order to ensure itsnot sticking to the seat. POINTS ON SHAFTING. The author of a paper on Shafting in Factories,presented before the American Society of MechanicalEngineers, summarizes his conclusions on the subjectas follows : It seems to the writer that in ordinary machinery es-. Spack Undkrneath Switch-Board, Showing Wires from Generators, Royal Electric CompanyLighting Station, Montreal. Alteknatinl All of this reconstruction has been designed and car-ried out on plans which adapt the system to be servedeither from its existing steam plant or from theChamblywater power plant. Upon the delivery of power fromChambly, the five 300 generators recently installedwill be used as synchronous motors, from which will beoperated the arc machines. The system affected by the above-described changes,operating for five months under the old conditions, fromOct. I, *94, to March i, 95, consumed 2,931 tons ofcoal more than was consumed in the five months fromOct. I, 96, to March i, 97, the number of incandescentlights being 10,200 more during the latter than duringthe former period. ALL RIGHT. Mr. S. H. Reesor, proprietor of the St. Marys Elec-tric Light Co., writes : Enclosed please find $,subscription to the Electrical News.
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