Railways – Track layers – Tie replacer
Patent
1989-12-12
1991-06-25
Oberleitner, Robert J.
Railways
Track layers
Tie replacer
104 71, E01B 2906
Patent
active
050257331
ABSTRACT:
A railroad tie replacing device (10) including a support frame (11) on rollers (22) for movement over a series of parallel railroad tracks (28) supported by railroad ties (29). A main piston or cylinder (15) is positioned such that the stroke of the piston rod is horizontally toward and away from the rails. A gripping mechanism (23) is arranged on the main cylinder rod and is capable of gripping a railroad support to be replaced. The main cylinder and an attached spacer (24) for securing the invention to the rail during operation are lowered over the rail by a lift cylinder (18). Upon operation, the grippers are closed over a tie to be removed and the main cylinder is activated. The outward stroke of the main cylinder piston rod with appended gripper mechanisms pulls the tie from beneath the rails.
REFERENCES:
patent: 2908228 (1959-10-01), Kershaw
patent: 2950687 (1960-08-01), McWilliams
patent: 3146727 (1964-09-01), Plasser et al.
patent: 3240160 (1966-03-01), Blix et al.
patent: 4418625 (1983-12-01), Allmer
patent: 4586424 (1986-05-01), Nerlich
patent: 4655633 (1987-04-01), Somero et al.
patent: 4770103 (1988-09-01), Allmer
patent: 4850630 (1989-07-01), Davies
Morano S. Joseph
Oberleitner Robert J.
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