. Motion picture electricity. e; and, finally, that starting out with flying colors inthe automobile field some eight or ten years ago, theyhave died an inglorious death—in that line. The manufacturing of electric generators in this coun-try is in the hands of perhaps not more than forty con-cerns. Ten of these produce perhaps no less than ninetyper cent, of the electric generators and motors sold in thiscountry, and of these ten concerns it may truthfully besaid that the product of any—or all—of them is excellent. :32 MOTION PICTURE ELECTRICITY In the manufacture of gas engines the conditions
. Motion picture electricity. e; and, finally, that starting out with flying colors inthe automobile field some eight or ten years ago, theyhave died an inglorious death—in that line. The manufacturing of electric generators in this coun-try is in the hands of perhaps not more than forty con-cerns. Ten of these produce perhaps no less than ninetyper cent, of the electric generators and motors sold in thiscountry, and of these ten concerns it may truthfully besaid that the product of any—or all—of them is excellent. :32 MOTION PICTURE ELECTRICITY In the manufacture of gas engines the conditions arequite different. There are no less than two hundred andfifty concerns engaged. Not more than ten per cent, ofthese concerns turn out a strictly first-class product, and,unfortunately—for the user—the product of some of thelargest and most advertised is the least desirable as faras quality is concerned. In closing this chapter, I might suggest that the pur-chaser of an electric lighting plant will do well to con-. Fig. 122 sider carefully and take into account the quality of equip-ment and accessories that the manufacturer includes. Irefer to the switchboard and instruments, the ignition sys-tem, such as batteries and coils—or magneto, if that bethe system—tanks, tools, and so forth. MOTION PICTURE ELECTRICITY 233 Fig. 122 illustrates the Brush Electric Lighting Set,which is one of those recommended as thoroughly reliableand of high efficiency and guaranteed to give illustration shows the engine directly connected toelectric generator of the highest quality, and there is fur-nished with this outfit a switchboard containing the nec-essary controlling switches, field regulator and Westonvolt and ampere meter, all complete. The plant illustrated is about 5 capacity. There isalso a smaller outfit made with single-cylinder engine ofsmaller type which delivers only 2 , and is of just theright size for traveling shows. This type of engine mayalso
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