. The Street railway journal . re used very ex-tensively to avoid accidents of this nature, Mr. Kremnitz be-lieves that such devices are not absolutely reliable, especially onrough roads, where the trolley wire is not always at the sameheight above the roadbed; again, if the car should be goingdown a grade the motorman would have no means of knowingimmediately that the wheel had left the wire unless the car isfitted with an automatic alarm, such as the type described. July 2, 1904.] STREET RAILWAY JOURNAL. -) NEW FORM OF TROLLEY BASE The accompanying illustration shows a new form of trolleybas
. The Street railway journal . re used very ex-tensively to avoid accidents of this nature, Mr. Kremnitz be-lieves that such devices are not absolutely reliable, especially onrough roads, where the trolley wire is not always at the sameheight above the roadbed; again, if the car should be goingdown a grade the motorman would have no means of knowingimmediately that the wheel had left the wire unless the car isfitted with an automatic alarm, such as the type described. July 2, 1904.] STREET RAILWAY JOURNAL. -) NEW FORM OF TROLLEY BASE The accompanying illustration shows a new form of trolleybase for double and single-deck cars, which is being manu-factured and sold by Harper, Phillips & Company, Ltd., of theAlbion Foundry, Eastgate, Grimsby, England. This device isof cast-steel throughout, and all the parts are total height, when compressed, is 5^ ins-, though this firmalso manufactures another design of trolley base which has atotal height of only 4 ins. from the underside of the base TROLLEY BASE FOR SINGLE AND DOUBLE-DECK CARS By an ingenious arrangement of the support centers an equalpressure on the trolley wire at all working angles is secured,and it is claimed that with the springs acting directly under thetrolley pole it is much more sensitive than is the case where thepressure is conveyed through bearings. Ball bearings are usedat both the top and bottom of the vertical sleeve, and a readyadjustment of the tension can be made. Only one lubricatoris necessary to oil all of the bearings, and the design in generalallows of a most perfect insulation. AUTOMATIC BAND RIP-SAW The automatic band rip-saw shown in the accompanyingillustration has been designed by the J. A. Fay & Egan Com-pany, of Cincinnati, Ohio, who particularly recommend it tocar builders, mill own-ers and other wood-work e r s who havestock that requiresheavy framing. It issafe to operate, a verysmall kerf is removed,wide or thick ma-te r i a 1 easily ripped,and but litt
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
