. The street railway review . nth century accommodations. M^«W^ 537 ELECTRICALCONDUIT WITH CLOSED SLOT ANICW conduit conslriKiioii has lici-n (k-\isc(l liyMr. C. H. Bates, a dentist of Minneapolis, and isillustrated herewith. The cross-section needs littleexplanation as the cut readily explains itself. The con-duit is very shallow and is intended to rest upon the tiesand between the rails. The large centre chamber inwhich the trolley wires and contact wheels are carried isdrained at intervals direct to the sewer. Other drains A prominent feature is the slot closing device by whichthe inventor
. The street railway review . nth century accommodations. M^«W^ 537 ELECTRICALCONDUIT WITH CLOSED SLOT ANICW conduit conslriKiioii has lici-n (k-\isc(l liyMr. C. H. Bates, a dentist of Minneapolis, and isillustrated herewith. The cross-section needs littleexplanation as the cut readily explains itself. The con-duit is very shallow and is intended to rest upon the tiesand between the rails. The large centre chamber inwhich the trolley wires and contact wheels are carried isdrained at intervals direct to the sewer. Other drains A prominent feature is the slot closing device by whichthe inventor expects to keep his conduit clean and freefrom foreign matter otherwise entering through the slot,and which if allowed to enter would render so small aconduit impracticable. A steel strip, or continuous strapextends the entire length of slot and is held in place onthe under side of slot rails by steel springs. Both strapand springs are depressed as contact wheels advancewith the car. The contact wheels correspond to the grip. ^,^^^iiJi/^4^i<^,.:/MisJiJ/-^iJ^4^^^^ are also placed just inside the rail to carry surface waterand prevent its backing up and into theslot. Two tun-nels are provided for feed and return wires — one oneither side. The trolley is fed from metal bars in short of cable roads, and can only be removed or placed in theconduit at manholes provided for the purpose. Thecross sections and top plates are of cast iron—the conduitwalls of rolled plates.
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
