. The Street railway journal . ins. of mercury Superheat 204 degs. F. Load in kilowatts 555 Steam consumption per kw-hour lbs. ZERO LOAD Duration of test hour Steam pressure 154-5 lbs. Back pressure (absolute) ins. of mercury Superheat 156 degs. F. Steam consumption per hour lbs. ■ ♦♦-» IMPROVED WIRELESS CAR-LIGHTING CLUSTERS The Benjamin wireless clusters which are in extensive useon electric cars throughout the United States because of theirsimplicity and substantial construction have been recently stillfurther improved. These car clusters are made in two sizes:One wit
. The Street railway journal . ins. of mercury Superheat 204 degs. F. Load in kilowatts 555 Steam consumption per kw-hour lbs. ZERO LOAD Duration of test hour Steam pressure 154-5 lbs. Back pressure (absolute) ins. of mercury Superheat 156 degs. F. Steam consumption per hour lbs. ■ ♦♦-» IMPROVED WIRELESS CAR-LIGHTING CLUSTERS The Benjamin wireless clusters which are in extensive useon electric cars throughout the United States because of theirsimplicity and substantial construction have been recently stillfurther improved. These car clusters are made in two sizes:One with a 3-in. diameter base is made for two or three lights;the larger size with a 4-in. diameter base is made to accommo-date two, three, four or five lights. These clusters can be usedeither with or without reflectors. The 450 cars purchased bythe St. Louis Transit Company just previous to the Expositionwere equipped with two-light clusters having no the ordinary opal reflector is desired, the clusters are. VIEWS SHOWING CONSTRUCTION OF WIRELESS CLUSTERS furnished with a sub-base by which the usual flat opal reflectorcan be adapted to car lighting, by being held between the baseof the cluster and the sub-base between two rubber rings. Re-flectors of white enameled tin or of polished aluminum are fur-nished to fit directly between the base of the cluster and theceiling without a sub-base. These latter reflectors are 14 16 ins. in diameter. The interior construction of these wireless clusters is verysimple and substantial. The contacts are all made a part ofthe mechanical construction of the cluster, so that the onlyconnections the wiremen must make are at the two bindingscrews, where the wires lead in. Lamps are connected to-gether in series by overlapping contacts. Between the termi-nals are porcelain partitions. All insulation is of porcelain,and the various parts are bolted firmly to a single porcelainblock which forms the entire insulation and su
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
