. Engineering and Contracting . ization, and,how much to profiteering through shirking, no man can fact remains that costs were high. Now they are coming down again. That is to say, carpen-ters, masons, painters, and glaziers appear to be turning outas much work in an hour as they did before the war. In cer-tain of our jobs, even, there are faint indications of improve-ment over earlier averages. To be sure, the men are not ac- (4 Portable Generator Sets for Op-erating Construction Machinery The requirements of the Army during the war brought par-ticular emphasis to the fact that for c
. Engineering and Contracting . ization, and,how much to profiteering through shirking, no man can fact remains that costs were high. Now they are coming down again. That is to say, carpen-ters, masons, painters, and glaziers appear to be turning outas much work in an hour as they did before the war. In cer-tain of our jobs, even, there are faint indications of improve-ment over earlier averages. To be sure, the men are not ac- (4 Portable Generator Sets for Op-erating Construction Machinery The requirements of the Army during the war brought par-ticular emphasis to the fact that for certain work and condi-tions an independent portable source of power and light wasindispensable. Gasoline engine-driven generators of varioussizes were employed extensively to great advantage. The Allis-Chalmers Mfg. Co., which furnished a large num-ber of these sets to the Government, has now placed them onthe market for general use. They make available to the con-tractor a source of power and light, flexible in application and. 15 K. W. Set Mounted on Army Truck. comparatively cheap. Two sizes have been brought out—a 5 , 110 or 220-volt and a 15 , 110 or 220-volt. These sets employ four-cylinder, four-cycle gasoline enginesof the automobile type which are of ample size and rating towithstand continuous full load service without being over-taxed. The engines will carry momentary overloads up to theultimate capacity of generator without bringing undue me-chanical strain on any of the working parts. They areequipped with standard magnetos, carburetors, water circulat-ing pumps, tubular type radiators and fans. Governors areprovided which positively regulate the speed to within 4 percent of the set speed of the engine from no load to full generators are provided with compound windings propor-tioned so that the voltage variations do not exceed 2 per centfrom the set voltage from no load to full load. The 5 set has three main bearings; one being the stand-ard
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