. The Street railway journal . FIG. 4.—HORNS AT END OFCONTACT BARS FIG. 6.—DIAGRAM SHOW-ING MOVEMENT OFCONTACT SHOE elevation of the plow, and which consists of a sort of lazytongs made of strips of copper. The same engravingshows the method of raising and lowering the plows me-chanically by means of a steel cable wound around awinch. The insulation of the conductors in the conduit is ingeneral satisfactory and varies from 4000 to 400,000 ohmsper km, depending upon the humidity. The principal causeof the breaking- down of insulation is the mud and street ——- Suppor
. The Street railway journal . FIG. 4.—HORNS AT END OFCONTACT BARS FIG. 6.—DIAGRAM SHOW-ING MOVEMENT OFCONTACT SHOE elevation of the plow, and which consists of a sort of lazytongs made of strips of copper. The same engravingshows the method of raising and lowering the plows me-chanically by means of a steel cable wound around awinch. The insulation of the conductors in the conduit is ingeneral satisfactory and varies from 4000 to 400,000 ohmsper km, depending upon the humidity. The principal causeof the breaking- down of insulation is the mud and street ——- Support for pulley.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
