. Electric railway journal . s to the other parts of the frame are electricallywelded, but otherwise the stand could be framed to-gether by threading and using lock nuts or by latter is what we did in installing the small ball-bearing used between the iron platform and the pipeguide. A ball-bearing, by the way, is not absolutelynecessary, for a flange is nearly as good. In this casethe ball-bearing was simply a bit of surplus stock whichwe adapted to a special purpose. The fulcrum of the pedal is fastened to the stand andis forked about the pipe which raises the platform. Apin thr
. Electric railway journal . s to the other parts of the frame are electricallywelded, but otherwise the stand could be framed to-gether by threading and using lock nuts or by latter is what we did in installing the small ball-bearing used between the iron platform and the pipeguide. A ball-bearing, by the way, is not absolutelynecessary, for a flange is nearly as good. In this casethe ball-bearing was simply a bit of surplus stock whichwe adapted to a special purpose. The fulcrum of the pedal is fastened to the stand andis forked about the pipe which raises the platform. Apin through the movable pipe, fitted with a small pieceof pipe which acts as a roller, raises the platform whenthe operator bears down on the pedal. The removablepipe is guided through the braces in the frame bymeans of ordinary floor flanges which are drilled to fitthe pipe. If the stand is to be used in the same pit allthe time or under cars of about the same height, a 4-in. increase in platform height is all that is nec-. Construction Details of Platform for Raising Rheostats CARHOUSE WARNING SIGNS AT WASHINGTON In accordance with an order issued by the PublicUtilities Commission, Washington, the Capital TractionCompany has recently installed at the entrances to cer-tain of its carhouses a safety sign of the style repro-duced in the accompanying drawing. As the letteringshows, the sign is a warning that vehicles go slowly inpassing the carhouses. This sign is 3 ft. 6 in. long and
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