Abstract: A water sprinkling system for greenhouse comprises two horizontal rails and a carriage movably mounted to the rails. A fluid outlet disposed at a substantially midway point along the rails is connected to the carriage by a fluid transfer hose for guiding fluid to the carriage from the fluid outlet. The hose has a first end portion extending from the fluid outlet along the first rail, a second end portion extending to the carriage along the second rail, and a middle portion connecting the end portions to one another. Support elements, preferably in the form of hook members, are spaced from one another along the first rail for supporting the first end portion of the hose, while a plurality of roller members are spaced from one another along the second rail for rollably supporting the second end portion of the hose. A hosecar is movably mounted to the rails for carrying the middle portion of the hose.

Abstract: A programmable sprinkler system ideally suited for use in an enclosure such as a nursery and/or arboretum includes a first overhead rail and a water pipe connected to a pressurized source of water. The water pipe is provided with a plurality of water valves placed at discreet intervals along its length and extend outwardly therefrom and is positioned alongside and close to the first overhead rail and parallel thereto. A source of electrical power is positioned close to and generally parallel with the first rail on the other side thereof and extends essentially its entire length. A plurality of second overhead rails have one end of each positioned near the valves and the first rail and extends outwardly therefrom, preferably at right angles thereto, defining a path along which the water is to be dispensed. A carrier mechanism rests on the first rail. Nested upon the carrier mechanism is a detachable car that includes a second coupling device to bring electrical power to it.