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DEVICE FOR DISPLAYING VERTICAL AND HORIZONTAL DIFFERENCES OF A TRACK FROM ITS DEFINED SET POINT BY MEANS OF A STRETCHED REFERENCE WIRE
DEVICE FOR DISPLAYING VERTICAL AND HORIZONTAL DIFFERENCES OF A TRACK FROM ITS DEFINED SET POINT BY MEANS OF A STRETCHED REFERENCE WIRE
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机译:用于通过拉伸参考线的方式在其定义的设定点上显示轨迹的垂直和水平差异的设备
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摘要
An indicator mechanism for an apparatus for correcting the existing grade and horizontal alignment of railroad track in accordance with a wire reference system. The mechanism includes frame means, the position of which in use is referenced to the existing position of an adjacent section of the railroad track. Pivot means are mounted for vertical, sliding movement on the frame means and a needle indicator is mounted on the pivot means to pivot about a horizontal axis generally parallel to the rails of the railroad track. Scale means are arranged on the frame means near one end of the indicator to indicate in combination with the indicator the existing grade and horizontal alignment of the adjacent section with reference to the wire reference system. During use of the mechanism, the position of the indicator is adjusted by a reference wire of the system which contacts the indicator. Preferably, this reference wire extends through a relatively small hole in the bottom portion of the indicator. The scale means comprises two separate scales, one scale to indicate the existing grade and the other scale to indicate the horizontal alignment of the adjacent section.
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