Today in 1977, US Patent 1132218 A was issued, an invention of Adolph Schneider, for his “Bottle-Filling Machine.” There’s no Abstract, but the description states that the “present invention relates to that type of mechanism used for the purpose of packaging carbonated liquids, or analogous substances, under pressure:”

The objects of the present invention are, to provide a stationary support upon which the to-be filled packages rest during the filling operation; to provide a series of pistons, one of which will actuate the filling tube of the bottle filling mechanism, and the other or. which will actuate the sealing head; to provide a series of cylinders for said pistons, one piston being contained in each cylinder; to arrange system of pressure supply ducts for conveying pressure to said cylinders for the purpose of actuating the pistons; to arrange a series of ducts for exhausting the pressure from the said cylinder so arrange these ducts, if desired, as to enable them to perform double functions, namely, that of an inlet and an exhaust duct; to provide an automatically operated valve for controlling the flow of liquid from the source of liquid supply to the filling tube, and in arranging this valve so that it is automatically operated at a time approximately when the filling tube has reached its lowermost position; to provide a method of establishing communication between a source of air pressure less than the sure of the liquid in the tank and the liquid of the bottle; to provide a valve for controlling the flow of said air whereby said valve will be automatically operated to establish said air communication at practically the same time that the communication is established to permit the flow of liquid from the filling tube into the bottle; to provide an arrangement whereby one of the set of pistons may be power driven in both sections, and the other of said pistons can be power driven in one direction only, with the last mentioned piston being moved in the opposite direction by contact with the first mentioned piston; and to provide a telescopic connection between the source of liquid supply and the filling tube, and a telescopic connection between the source of air supply and the sealing head.