. The street railway review . FEIST TROLLEY made, whereby the W. R. Carton Co., of Chicago, becomes solemanufacturer and selling agent. By reference to the accompanying illustrations, it will be seenthat the device consists of a two-piece harp, made of malleableiron, and a hardened steel axle, threaded at its ends, connectingthese pieces. Four holes are bored in this axle, in each of whichis carried a graphite pencil of special composition, these pencils be-ing held against the bearing of the trolley wheel by helical springsin such a manner as to secure constant and even lubrication, an
. The street railway review . FEIST TROLLEY made, whereby the W. R. Carton Co., of Chicago, becomes solemanufacturer and selling agent. By reference to the accompanying illustrations, it will be seenthat the device consists of a two-piece harp, made of malleableiron, and a hardened steel axle, threaded at its ends, connectingthese pieces. Four holes are bored in this axle, in each of whichis carried a graphite pencil of special composition, these pencils be-ing held against the bearing of the trolley wheel by helical springsin such a manner as to secure constant and even lubrication, andassure positive contact. One set of lubricating pencils outlastsa 20,000 mile wheel. Thin lubricating washers are placed on this axle, between thewheel and the arms of the harp, thereby insuring lubrication here,and preventing cutting such as would occur with a metal washer. The axle for a two motor equipment is one inch in diameter,while for a four motor equipment it is made i 7-16 in. in size of these axles of
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
