Needle indicator for rail liner

Details Needle indicator for rail liner Needle indicator for rail liner

1975-09-08

1977-05-31

Martin, Jr., William D.

Geometrical instruments

Indicator of direction of force traversing natural media

Railway rail spacing and inclination

33 1Q, 33144, B61K 908, E01B 2904

Patent

active

040260348

ABSTRACT:
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.

REFERENCES:
patent: 1417703 (1922-05-01), Waffenschmidt
patent: 3165838 (1965-01-01), Plasser et al.
patent: 3314373 (1967-04-01), Plasser et al.
patent: 3389469 (1968-06-01), Plasser et al.
patent: 3557459 (1971-01-01), Plasser et al.

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