Apparatus for tramming railway trucks

Metal working – Means to assemble or disassemble – Including means to relatively position plural work parts

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Details

29271, 1051571, 1052241, E04B 200

Patent

active

047715294

ABSTRACT:
Apparatus for tramming the wheel and axle assemblies of railway trucks having sideframes and a transverse frame member supported on sideframes, the sideframes being supported at their ends on structures carried on the end portions of the axles, including a fixture having apertures defining the trammed positions of the journal boxes, vertical axis cylindrical apertures in the end portions of the sideframes adapted for general vertical alignment with the fixture apertures, cylindrical bushings rotatably mounted in the sideframe apertures and having off center internal apertures, pins rotatably mounted in the bushing internal apertures and having off center internal apertures, pins rotatably mounted in the bushing internal apertures and having an eccentric extension at their lower ends, whereby irrespective of misalignment of the sideframes, the pin extensions are alignable with and insertable in the fixture apertures, said bushings and pins being lockable in the resulting trammed positions and their eccentric extensions, the axle supported structures being formed with apertures for closely receiving the pin eccentric extensions and thereby fixing the wheel and axle assemblies in trammed relation.

REFERENCES:
patent: 3839969 (1974-10-01), Thum
patent: 3877387 (1975-04-01), Kasai et al.
patent: 4067261 (1978-01-01), Scheffel
patent: 4140305 (1979-02-01), Rabin
patent: 4151801 (1979-05-01), Scheffel et al.
patent: 4191366 (1980-03-01), Rabin
patent: 4598453 (1986-07-01), Wills
patent: 4626299 (1986-12-01), Knight et al.

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