Rail-scraper devices and installations

Details Rail-scraper devices and installations Rail-scraper devices and installations

1998-02-05

1999-10-26

Scherbel, David A.

Abrading

Attachment

To vehicle

451429, 451415, B24B 1900

Patent

active

059718382

ABSTRACT:
An abrasive block 1 used for scraping wet leaves, snow or ice from a rail R of a railway track in order to enhance traction, is urged onto the rail R by a piston 2 under oil-pressure within a cylinder 3. The pressure is created via a diaphragm 11 which separates the oil in the cylinder 3 from an air-chamber 12. Chamber 12 is supplied with air via a regulator 14, from the air-brake supply system 16 of the train, and has a dump valve 19 for dissipating air-pressure surges. A return spring 20 under the piston 2 is active in retracting the block 1 when air-pressure in the chamber 12 is reduced.

REFERENCES:
patent: 3823455 (1974-07-01), McIlrath et al.
patent: 3850691 (1974-11-01), Bleil et al.
patent: 3945152 (1976-03-01), Helgemeir
patent: 4062295 (1977-12-01), Hamann
patent: 4091578 (1978-05-01), Panetti
patent: 4178724 (1979-12-01), Bruno
patent: 4205494 (1980-06-01), Rivoire
patent: 4206908 (1980-06-01), Mercier

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