. Electric railway journal . brass and ismachined to align withthe upper carbon holder. The 3-)4-m. x 2Is-in. diametermagnet is made of double cotton-covered wire and weighs3 Hi. The carbon does not pass through the center of themagnet, but is placed at the rear to permit simple con-struction and a better focus point in the reflector. Insteadof depending on a center screw the reflector is held byfour brass posts, which are fastened to the back plate andto the rim of the reflector. The globe is i>lA m- long and3 in. in diameter. The resistance is 8 in. long and 7^2 diameter. Great care
. Electric railway journal . brass and ismachined to align withthe upper carbon holder. The 3-)4-m. x 2Is-in. diametermagnet is made of double cotton-covered wire and weighs3 Hi. The carbon does not pass through the center of themagnet, but is placed at the rear to permit simple con-struction and a better focus point in the reflector. Insteadof depending on a center screw the reflector is held byfour brass posts, which are fastened to the back plate andto the rim of the reflector. The globe is i>lA m- long and3 in. in diameter. The resistance is 8 in. long and 7^2 diameter. Great care has been taken to obtain the bestpossible insulation from the binding posts and from the rodwhich holds the porcelain knobs. The covering is made ofperforated steel with ample air space to keep the resistancecool. Only one hanger is used in the center of the lampand two rubber bumpers are placed at the bottom with ascrew and wheel to make certain that the light will bethrown directlv in the center of the track at all Side View of Headlight CAR EQUIPMENT INSTRUCTION BOOK The transportation department of the Metropolitan StreetRailway, New York, has recently prepared a seventy-one-page, cloth-bound instruction book for the guidance of em-ployees who wish to become starters, inspectors or instruc-tors. The contents are therefore more elaborate than isusual in a book of this character. Several chapters aredevoted to definitions of the principal electrical terms andto explanations of railway motor action in regular runningand in emergencies. Detailed illustrated descriptions arepresented of the standard air and electrical equipments ofthe cars; also of the contact and hand plows required forthe conduit system and of the electric track switches. Thelist of donts offers a convenient summary of the causes which result in the greatest number of car troubles. Mostof the data are in question and answer form for the con-venience of the student. In preparing the text care wastaken
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
