Device for regulating discharge of sand from a vehicle sander

Details Device for regulating discharge of sand from a vehicle sander Device for regulating discharge of sand from a vehicle sander

1980-03-21

1982-04-20

Skaggs, H. Grant

Track sanders

Fluid delivery

291 38, 291 11A, 222630, 406146, B61C 1510

Patent

active

043255736

ABSTRACT:
A sanding apparatus for a vehicle, particularly rail vehicles, has a sealed container for sand and the container is provided with a bottom wall which is permeable by air. A sand discharge pipe extends from the container through the bottom wall and has an end position in front of a vehicle wheel. An air supply line extends from a source of air under pressure and opens into a chamber underneath the bottom wall of the container. An exhaust air line has one end within the container above the level of sand when the container is full and has its other end connected to the sand discharge pipe. The flows of air through the air supply line and the exhaust air line are so controlled that at a predetermined pressure of supplied air a remaining portion of the supplied air flows through the sand discharge pipe at a rate to discharge a predetermined quantity of sand per unit time from the sand discharge pipe. Various structures are provided for regulating these flows of air.

REFERENCES:
patent: 2125913 (1938-08-01), Goebels
patent: 3425601 (1969-02-01), Fry
patent: 4099688 (1978-07-01), Jayne

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