Split workhead

Details Split workhead Split workhead

1987-02-09

1990-02-13

Cherry, Johnny D.

Railways

Track layers

Tamper

E01B 2712

Patent

active

048996645

ABSTRACT:
There is described a track travelling railroad switch tamping machine which has a transversally extending guide frame at its front end and four ballast tamping units one each mounted in individual sub-frames which are mounted on the guide frame. Hydraulic power means are provided to individually move each of the sub-frames with its tamping unit, transversally of the vehicle on the guide frames, independentally of each other sub-frame. Individual hydraulic power devices are provided on each sub-frame for individually raising and lowering each tamping unit within its own sub-frame, independently of the other tamping units.

REFERENCES:
patent: 2973719 (1961-03-01), Plasser et al.
patent: 3144834 (1964-08-01), Stewart
patent: 3534687 (1970-10-01), Plasser et al.
patent: 4066020 (1978-01-01), Theurer
patent: 4576095 (1986-03-01), Theurer

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