. The Street railway journal . tive feature of this overload attachment lies in the fact that the tripping coils are energized by currc JHthigh potential circuit, and the use of series transformers .connection with the circuit breaker is entirely avoided. Thetripping coils instead of being located on the front of the panel,as is commonly the case, are mounted by means of special por-celain insulators on the carrying frame itself. They are sepa-rated from each other by barriers of insulating material, andthe method of insulation throughout is of the highest overload attachment has oth
. The Street railway journal . tive feature of this overload attachment lies in the fact that the tripping coils are energized by currc JHthigh potential circuit, and the use of series transformers .connection with the circuit breaker is entirely avoided. Thetripping coils instead of being located on the front of the panel,as is commonly the case, are mounted by means of special por-celain insulators on the carrying frame itself. They are sepa-rated from each other by barriers of insulating material, andthe method of insulation throughout is of the highest overload attachment has other distinctive features, one ofthe most important of which is that it cannot be held closedwhile an overload exists on any line. This apparatus is also constructed with remote electricalcontrol, to be installed apart from the switchboard and to beopened and closed from a distance. The operating current maybe derived from the exciters, a storage battery or any con-venient source of direct-current supply at from 110 volts to 500. FIG. 2.—THREE-iOLE, DOUBLE-BREAK. SWITCH, WLMATIC OVERLOAD ATT IC^V^NT AUTO volts. The remote control attachment is said to be very re-liable and it adds but little to the cos-- of the installation. SINGLE TRUCK CARS WITH LARGE S£ATING CAPACITYAT GRAND RAPIDS The Grand Rapids Railway Company is biuFtng, tinder thesupervision of W. W. Annabfe, t rnastej ait .. .0, a nuj iberof single-truck cars, ,htch are remarkable for thVr larg$ seat-ing capacity notwithstanding the use of cr« thesecars are for service on some of the 10 per cent I >and Rapids, and are also noteworthy for haying] theheaviest motor equipment yet placed on a single-truck cars have bodies 23 ft. long and are 28 ft. lopg >vei theplatforms. They weigh approximately 30,000 lbs., and areequipped with two General Electric 66-motors, hich motorsare of about 125-hp rated capacity, being the safne as are r?edfor the heaviest elevated and interurban service flie seatingcapacity of
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
