Abstract: A solar energy device for producing a continuous mechanical motion to drive apparatus such as a well pump comprises a frame made of conduit sections that supports a heat collector to receive the sun's rays. Heat generated within the collector is transferred to a network of conduits therein through which an evaporatable fluid is circulated as it is heated to its vaporous state. The vaporized fluid or gas is furnished to a vapor pressure motor having a common connection to the conduit network. The motor is situated within the collector and has a movable piston operated by its own valving system that produces a continuous reciprocating action. The piston is connected to an output shaft that engages a working lever arm connected to the pump. Vapor used to operate the motor is conveyed to a condenser within the frame where it is cooled to its liquid state by water produced by the well pump which is forced through the frame.

Abstract: A solar energy device for producing a continuous mechanical motion to drive apparatus such as a well pump comprises a frame made of conduit sections that supports a heat collector to receive the sun's rays. Heat generated within the collector is transferred to a network of conduits therein through which an evaporatable fluid is circulated as it is heated to its vaporous state. The vaporized fluid or gas is furnished to a vapor pressure motor having a common connection to the conduit network. The motor is situated within the collector and has a movable piston operated by its own valving system that produces a continuous reciprocating action. The piston is connected to an output shaft that engages a working lever arm connected to the pump. Vapor used to operate the motor is conveyed to a condenser within the frame where it is cooled to its liquid state by water produced by the well pump which is forced through the frame.