. The street railway review . KXMiiiri III .>.\iici<ii.\x coNnriT <•. A side view of the conduits shows them laid in cement, and theend of the trench is also shown, illustraling how the successivelayers of the conduits are laid, and also the method of joining thesuc<-essive 7-ft. lengths of conduits. This latter is done by a maleand female joint turned in a lathe to an accurate fit. At the tlmoof construction the female joint is dipped in a solution, whichsoon hardens and seals the joints between the various units, pre-venting leakage of water or gas into the conduit. j , American
. The street railway review . KXMiiiri III .>.\iici<ii.\x coNnriT <•. A side view of the conduits shows them laid in cement, and theend of the trench is also shown, illustraling how the successivelayers of the conduits are laid, and also the method of joining thesuc<-essive 7-ft. lengths of conduits. This latter is done by a maleand female joint turned in a lathe to an accurate fit. At the tlmoof construction the female joint is dipped in a solution, whichsoon hardens and seals the joints between the various units, pre-venting leakage of water or gas into the conduit. j , American bitnniinizeil loncliiit is lonstrucled by rolling li^yers. dnm, wood, rubber, corrugated Iron or steel and other was found that neither expansion nor contraction injured thefrlctional r|ualltieH of the felt. In fact, when the felt comes incontact with water or Ice It absorbs the moisture, thereby expand-ing and offering greater re8l«tan-d fully equal lo the hardest braking requirements; ItiH very durable and can if quickly replucMl at small cost. of specially prepared flbiouK paper on a niamlrel. The paper Issaturated with a bituminous compound, wliicli under high tem-perature anil pressures employed in the rolling process so unite-ithe layers that the pro<luct Is a soliil, stiff tube. HitumlnlzodIondult Is non-abrasive, moisture-proof and noncorrosive, and. ItIs believed,
Size: 3125px × 800px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
