Abstract: A portable pump spraying device includes a container for the liquid to be sprayed, a housing positioned above the container having a spraying chamber, a pumping unit to elevate the liquid to the spraying chamber, and a rotating disc in the spraying chamber to attenuate and impel the liquid by centrifugal force through an egress port in the housing. Interceptor baffles within the spraying chamber finely trim the liquid spray as it leaves the egress port and direct the excess liquid back to a reservoir for recirculation. The pumping unit includes a rod that is reciprocated by an eccentric on the rotating shaft on which the disc is mounted. The rod acts as a piston which on its suction stroke withdraws liquid from the container and on its compression stroke discharges the withdrawn liquid and forces it through a nozzle onto the disc in the spraying chamber.

Abstract: A gravity engine converts one form of energy into another by using the expansion of a fluid medium to propel each of a plurality of bodies upwardly within one of a pair of adjacent vertical passageways. The expansion of a gas, such as steam supplied from a boiler heated by a solar panel, in a chamber and controlled by valves provides the force to propel the bodies against the force of gravity upwardly to the top of the first passageway. A guide directs the bodies from the top of the first passageway to the top of a second passageway wherein the bodies are stacked so that their combined weight acts upon a pocketed drive wheel at the bottom of the second passageway. The drive wheel is coupled to means such as an electrical generator to convert at least a portion of the potential energy of the stacked bodies into another form of energy. The pocketed wheel may also drive a pump used to return condensate water from the engine case to the boiler. The pocketed wheel carries the bodies, e.g.

Abstract: A multi-color electrostatic printing machine having processing components adapted to produce an image for each color of an original being copied, individual color developing units for effecting development of the corresponding images and a program arrangement for coordinating in timed sequence the operation of the processing components and the transfer of each developed image in superimposed relationship upon sheets of paper.