. The street railway review . tedof making wheels for cars by bending up seven piecesof bar iron in such a shape that the center fits inside ofa hand or false felloe, which, in turn, is hammered into agroove in the tire, felloe and tie being riveted together,the cars bent round to the center of the wheel, their endshaving a model placed between them; cast iron is thenrun in, forming the hub, which is afterwards bored out,and the cast steel axle forced in by some fifty-five thousandto sixty-six thousand pounds hydraulic pressure, and thelife of the center of the wheel is said to be practicallyi
. The street railway review . tedof making wheels for cars by bending up seven piecesof bar iron in such a shape that the center fits inside ofa hand or false felloe, which, in turn, is hammered into agroove in the tire, felloe and tie being riveted together,the cars bent round to the center of the wheel, their endshaving a model placed between them; cast iron is thenrun in, forming the hub, which is afterwards bored out,and the cast steel axle forced in by some fifty-five thousandto sixty-six thousand pounds hydraulic pressure, and thelife of the center of the wheel is said to be practicallyinterminable under ordinary conditions. Hamburg, Germany, has a street railway on the elec-tric plan. 280 (^lafcd/l?{ailM^5^yieW* A BONDING CHUCK. The latest addition to the list of bonding devices is the bonding chuck made by Stern & Silverman, 707 Archstreet, Philadelphia. It necessitates the cutting of threadsin the hole in the rail. The chuck having been screwedin tight, the bond is placed in the split end, and the nut. screwed up until the three segments are brought togetherso as to clamp the bond. The labor required to installthese bonds is somewhat more than that with other forms,but once put in, good contact is absolutely certain, and thecost will still be less than that of heavy copper feeders. THE BARROWS ELEVATED ROAD. In this system the inventor has in mind the cheapeningof the elevated structure so as to make it practicable for cross country construc-tion, and cheaper thanbuilding a surface roadwith cuts and fills. In-stead of having the ordi-nary rails, a part of theweight of the train istaken by the flat tiredwheels running on thegirderf, which girders area necessary part of theelevated structure. The cars are held on the track bythe central double flanged wheels. The motors are
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