. The street railway review . -and is geared so heavily that the platform has a speed ofthirty feet per minute, while the drum travels very elevator machine weighs four and a half tons power is transmitted to this machine from a 20-horse-power Westinghouse motor, through a countershaft asshown in the engraving. The platform is thirty-four feet long, fifteen and a halffeet high, and ten feet wide. This is built entirely ofiron and weighs six and a quarter tons. It is guided atfour points on lo-inch channel iron beams, with mapleguides fastened thereto. The platform is raise
. The street railway review . -and is geared so heavily that the platform has a speed ofthirty feet per minute, while the drum travels very elevator machine weighs four and a half tons power is transmitted to this machine from a 20-horse-power Westinghouse motor, through a countershaft asshown in the engraving. The platform is thirty-four feet long, fifteen and a halffeet high, and ten feet wide. This is built entirely ofiron and weighs six and a quarter tons. It is guided atfour points on lo-inch channel iron beams, with mapleguides fastened thereto. The platform is raised a dis-tance of twenty-five feet, and has a lifting capacity ofnine tons. Our engraving shows the platform with the. ELEVATOR AT TOP. car on it, in the act of being raised. Attached to theplatform are four counterweights, run within separateguides, each weighing one and a quarter tons. Theseare suspended by two cables each, while the platform issuspended by four heavy iron cables. It was in the overhead work, where most planningwas necessary. The beams are very heavy steel ones,and are supported either by the heavy brick walls, or by8-inch iron columns bolted to very heavy iron beam work is all securel) tied together. The mainsheaves are four feet in diameter and made very heavy,weighing nearly one-half a ton each, properly scored toreceive the four lifting cables. This overhead beamwork was made more difficult to erect, from the factthat there is only one-half inch clearance between themain cross beams that carry the large sheaves, and thetruss work of the roof. The elevator in question ishandled very readily, indeed as much so as the ordinarysmall freight elevator is, the machine bein
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
