. Electrical world. have made the Warner enclosed arc lamp a success on circuitsof such high amperage. In the first place he uses a globe whichis considerably larger than the ones used on ordinary enclosed arclamps, and instead of using an iron gas cap, he has made the gascap entirely of an insulating material in one piece, which is aninsulator to both heat and electricity. This cap with its globe isat a reasonable distance from the bottom of the lamp body, p«r-mitting the air to circulate around and about the globe, and the. MLLT1P0L.\R GE:XER.\T0R. them from working loose. The brush surface
. Electrical world. have made the Warner enclosed arc lamp a success on circuitsof such high amperage. In the first place he uses a globe whichis considerably larger than the ones used on ordinary enclosed arclamps, and instead of using an iron gas cap, he has made the gascap entirely of an insulating material in one piece, which is aninsulator to both heat and electricity. This cap with its globe isat a reasonable distance from the bottom of the lamp body, p«r-mitting the air to circulate around and about the globe, and the. MLLT1P0L.\R GE:XER.\T0R. them from working loose. The brush surface never exceeds 30amperes per square inch of carbon contact. The generators are designed to operate at their full rated capaci-ties without a rise in temperature to exceed 30° above the sur-rounding air in either the armature or field winding, and 35° C. risein the commutator. They are built to operate at an overload of25 per cent, for two hours, and to withstand an overload of 50 percent, for two to three minutes without injurious heating or spark-ing. The machines are thoroughly tested before leaving the worksand guaranteed against defective workmanship or material. Series Enclosed Arc Lamps. A series enclosed arc lamp for use on ampere circuits, whichhas now been in successful use for over years, is now beingmade in quantities for the general market by Mr. W. F. Warner,of Muncie, Ind., its inventor and designer. During the past ninemonths, the lamp has been introduced in a number of cities, andhas found fa
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectri, bookyear1883
