. Railway and Locomotive Engineering . heavy density opal, medium density opal,aluminumized metal, enameled metal andbare lamps. With gas lighting the aluminumizedmetal gives the best results and is nearlycomparable with the mirrored glass. A feature calling attention to the im-portance of using proper types of re-flectors in car lighting service for all vised to December 28, 19l2, were de-termined upon as a result of the Baltimore& Ohio Railroad Coinpanys comprehen-sive tests in this connection, and whichconstitutes the only authentic data thus faravailable on this subject. Motor-Operated Rai
. Railway and Locomotive Engineering . heavy density opal, medium density opal,aluminumized metal, enameled metal andbare lamps. With gas lighting the aluminumizedmetal gives the best results and is nearlycomparable with the mirrored glass. A feature calling attention to the im-portance of using proper types of re-flectors in car lighting service for all vised to December 28, 19l2, were de-termined upon as a result of the Baltimore& Ohio Railroad Coinpanys comprehen-sive tests in this connection, and whichconstitutes the only authentic data thus faravailable on this subject. Motor-Operated Railroad Lift Bridges. Practically all the railroad lift or drawl>ridges erected in the last few years,where electric current is available, aremotor operated. ihe motors shown in the illustrationo])crate the si.\-tract bridge over river and a similar installation forthe Hutchinson river number of daily openings of thesebridges varies. In the case of the bridge the number of opening dur-. WESTlNCIIol SK MiiTdUS .\XD METHOD OF .Mll I A 1 11 iN rROLLER LIFT liKlULlE FOR THE N. V., .\. 11. S IL K. R, (_)\ KK THE SCHERZERTHE RUER. classes of cars is shown in the comparisonof illumination obtained with the most ef-ficient type of reflector tested, the mir-rored glass and with the bare lamps, inwhich the illumination obtained on theworking plane where the reflector wasused was practically 220 per cent, of thatobtained with bare lamps, the number oflamps installed being the same in eachcase. In addition the ceiling of the carhad been freshly painted a dead presenting more favorable conditionsfor the bare lamps than would generallybe obtained in service. Further, the glareeffect obtained from bare lamps is suchas to render the eye much less eflicient aswell as susceptible to severe eye strainthan where reflectors are used. The mimmum and maximtim initial il-lumination values as well as the serviceillumination values require
Size: 1816px × 1377px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyork, bookyear19
