. Electric railway journal . ur committee to believethat a longer lived and more efficient flange can be flange section here shown is one which has given verygood performance in actual service, and it is the opinion ofyour committee that this section will be found more satis-factory for the use of the average combined interurban andcity road than the standard adopted fn 1907, and hence thiscontour is respectfully submitted as^, substitute for the oneaaopted in 1907. The diagram at the bottom of the illustra-tion shows the relative shape of the two flanges. Your committee has no cha
. Electric railway journal . ur committee to believethat a longer lived and more efficient flange can be flange section here shown is one which has given verygood performance in actual service, and it is the opinion ofyour committee that this section will be found more satis-factory for the use of the average combined interurban andcity road than the standard adopted fn 1907, and hence thiscontour is respectfully submitted as^, substitute for the oneaaopted in 1907. The diagram at the bottom of the illustra-tion shows the relative shape of the two flanges. Your committee has no change to propose in wheel Badopted in 1907. (g) Proposed Gage for Mounting Wheels It is becoming recognized generally that where rapid wearoi flange occurs, the rapidity of wear may not necessarily bedue to any inherent defect in the wheel. If improper truckconditions exist, such as truck out of square, or truck notcurving freely, these may produce bad flange wear. Alsoine rame result may be experienced with mismated wheels 1%. regular switchboards having slate or marble bases are used,the snap switches are much to be preferred for lighting andheating circuits, as compared with knife switches. The same principle holds true in the case of car houses. The above is true on account of the fact that knifeswitches for 600 volts have to be made with so long a dis-tance between studs that unless a blade of very muchheavier cross section than is necessary for carrying the cur-rent be employed, the switch is apt to be mechanically weakand flimsy. Thus, a 100-amp single-pole switch is about thesmallest size that can be made with proper mechanicalstrength for such work, and a switch of this size is usuallyvery much larger than the current requirements would callfor. Reliable snap switches can be made much more reason-able in size for 600-volt circuits, and, in addition to beingcovered and thus protected from accidental contact, areneater and less bulky. A switch, the entire body of which is
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
