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US 4,520,901 AGranted
Method and apparatus for dispensing a working substance such as a lubricant
AssigneeSwedish Rail System AB SRS
InventorsAlf L. Borup, Erik G. Astrom
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AssigneeSwedish Rail System AB SRS
InventorsAlf L. Borup, Erik G. Astrom
Estimating the term…
In a method of lubricating a curved section of a railway track subjected to wear by the wheel-flanges of passing railroad vehicles the rail section is intermittently lubricated with lubricant from a lubricating shot-unit or metering-unit provided with a nozzle. The shots of lubricant may be controlled by using a signal voltage applied between the rails or by means of an electric transducer, an inductive transducer, a coupling clock or the like. Compressed air and/or lubricant is applied through lines to the metering-unit from separate storage containers arranged at a distance from the unit. In one embodiment a propelling-gas of reduced pressure is caused, via a control unit, to control in a pulse-like fashion a metering valve associated with said metering-unit. The invention also refers to an apparatus for the intermittent discharge of a working substance, e.g. grease for lubricating railway tracks, by means of a propelling-gas under high pressure such as nitrogen gas.
A method of lubricating with grease a curved section of a railway track subjecting to wear by the wheel flanges of passing railway vehicles, comprising:
Apparatus for the shot-like dispensing of metered amounts of grease generally horizontally onto the inner side surface of a railway track at a curved section of said track, said apparatus being adapted to be located adjacent to said curved section of track, comprising,
Dependencies are inferred from the claim text.