Abstract: The container filling device includes a first piston slidably mounted within a first cylinder for raising and lowering a nozzle into and out of operative engagement with a container to be filled. A sealing ring is mounted on the lower end of the first piston for sealing engagement with the rim of a container to be filled and a passage is provided for allowing gas pressure within the container to enter the bottom of the first cylinder to provide a pressure differential on the first piston depending upon the diameter of the container. A second piston is slidably mounted for vertical reciprocating movement within a second cylinder and is operatively connected to the first piston. First and second pneumatic pressure supplies are connected to the second cylinder above and below the second piston for regulating the pressure applied between the sealing ring on the first piston and the rim of a container being filled.

Abstract: A telescopic filling adapter of the type adapted to be mounted on the filling valve of a bottle filling machine is comprised of a mounting element adapted to be sealingly engaged with the filling valve. A centering element is provided with an annular seal for engaging a bottle opening and is mounted for telescopic sliding movement relative to the mounting element. One of the elements defines an annular telescopic chamber for slidably receiving the other element with sufficient clearance to permit the passage of fluid into the telescopic chamber during a bottle filling operation. A sealing ring is provided between the mounting element and the centering element so that the telescopic chamber may be pressurized when the mounting element is sealingly engaged with the filler valve and the centering element is sealingly engaged with a bottle. Suitable springs are provided for biasing the centering element into pressure engagement with the bottle.