Abstract: An animal watering system and method which includes a number of drinkers which can be remotely adjusted, upwardly and downwardly, to correspond with the height of the animals to be watered, as the animals grow, the drinkers having a carriage which slides within a support frame anchored to the animals' cage. The method and system of the invention allows force to be applied to the carriage in both the upward direction and the downward direction for remote height adjustment, and a coupling system permits the simultaneous remote height adjustment of some or all of the drinkers in the animal watering system.

Abstract: A lubricant metering assembly is disclosed comprised of a lubricant cup positioned within a housing and having a spring-loaded piston assembly including a stem which is caused to move within a cylindrically-shaped passageway including a stem guide formed in a housing. At least one channel of variable cross-sectional area is formed in the stem in a manner to result in an increase in the cross-sectional area of a supply passageway formed by the channel with the stem guide in precise relationship to a decrease in the compressional force of the spring.