Railroad tamping machine

Details Railroad tamping machine Railroad tamping machine

1979-10-12

1981-08-11

Bertsch, Richard A.

Railways

Track layers

Tamper

E01B 2714

Patent

active

042828155

ABSTRACT:
A railroad tamping machine for tamping adjacent pairs of ties in which the tamping units associated with each of the ties can be moved vertically as a unit or independently of each other and wherein a selected set of tamping units associated with a single tie can be held in an inoperative position while the remaining tamping units work on the associated tie.

REFERENCES:
patent: 2497682 (1950-02-01), Mertz
patent: 3177813 (1965-04-01), Stewart
patent: 3357366 (1967-12-01), Plasser et al.
patent: 3581664 (1971-06-01), Kruse
patent: 3710721 (1973-01-01), Stewart
patent: 4040292 (1977-08-01), Thevrer et al.
patent: 4111128 (1978-09-01), Keyes

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