Apparatus for improving adhesion of a railway vehicle

Details Apparatus for improving adhesion of a railway vehicle Apparatus for improving adhesion of a railway vehicle

1986-09-30

1988-05-31

Cherry, Johnny D.

Track sanders

Fluid delivery

291 19, 291 46, 239290, 239424, B61C 1510

Patent

active

047476273

ABSTRACT:
A sanding apparatus improves adhesion between a railcar wheel and a rail by supplying adhesion intensifying particles to the contact faces. Sand and/or quartz particles, having diameters such that at least 50% of the particles are 100 to 300 micrometers, are mixed with compressed air and jetted at high velocity through a U-shaped storage chamber, out a nozzle, to the wheel-rail contact area. In the nozzle, a compressed air supply pipe surrounds and projects beyond the end of the particle supply pipe to create an air curtain surrounding the jetted particles. A heater, a heat insulation member, or constantly leaking air may be used to prevent freezing in the pipes.

REFERENCES:
patent: 549642 (1895-11-01), Heysinger
patent: 1026688 (1912-05-01), MacLeod et al.
patent: 1404903 (1922-01-01), Spencer
patent: 2654622 (1953-10-01), Foster
patent: 2783070 (1957-02-01), Saari et al.
patent: 3020071 (1962-02-01), Makinson
patent: 3123386 (1964-03-01), Frantz
patent: 4412402 (1983-11-01), Gallant

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