. American engineer and railroad journal . VIEW SHOWING LEVERS AND RELIEVING GEAR IK CROSS SECTION OF FIFTH LEVER. consists of a series of eight toggle lever jacks supported in pairsby the universal bed plates. These jacks are operated throughsuitable link connections from a shaft which in turn is operatedby a double-ended cylinder, using either air or water for power,the controlling valves being in the scale office. The mechanismcan also be operated by hand if necessary. When these jacks areput in operation they raise the platform to a position of repose,taking all weight from the kni
. American engineer and railroad journal . VIEW SHOWING LEVERS AND RELIEVING GEAR IK CROSS SECTION OF FIFTH LEVER. consists of a series of eight toggle lever jacks supported in pairsby the universal bed plates. These jacks are operated throughsuitable link connections from a shaft which in turn is operatedby a double-ended cylinder, using either air or water for power,the controlling valves being in the scale office. The mechanismcan also be operated by hand if necessary. When these jacks areput in operation they raise the platform to a position of repose,taking all weight from the knife edges, but do not lift the knifeedges from their seats. There is a semaphore at either endof the scale connected to the bearing shaft, which indicate whetherthe scale is out or in. While these jacks will support the larg-est consolidation locomotives without showing any weight onthe beam while it is going over the scale, the relieving gear can-not be operated while the scale is under load, but since the aver- 146 AMERICAN EXGINKER AND KAILKUAD [ULRNAL April, 1911. age interval between
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
