GB1004828A - A cock for the automatic filling of bottles with liquids under gaseous pressure - Google Patents

Abstract

1,004,828. Bottling. CONSTRUCTION DE MATERIAL D'ALIMENTATION S.A. Dec. 21, 1961 [Dec. 29, 1960; Nov. 6, 1961], No. 45762/61. Heading B8T. The liquid and gas valves Y and H, J respectively of a counter pressure type filler are controlled pneumatically by a device Ve within the liquid reservoir R and supported by conduits C 1 , C 2 and C 3 . Diaphragms M 1 , M 2 on the device are operated by compressed air fed through conduit C1 and C2 respectively to move a stirrup Et vertically to control the passage of gas from the reservoir interior into the bottle. Fig. 1 shows the filler in the inoperative position, and when a compressed air valve VA1 is opened and a bottle urges a tulip Tp into engagement with the base of the reservoir to close a passage d, the diaphragm M1 expands upwardly and moves the stirrup vertically to allow compressed gas to flow from the reservoir through a tube T and the orifices K. If a bottle is not present the air leaks away at d and the diaphragm is not expanded. When the pressure in the bottle and reservoir are equalized, a spring Rt forces the tube T upwards until a shoulder L engages a fixed stop K; the valve Y is raised and liquid passes into the bottle through a grid g and past a member y urged downwardly somewhat against a spring. Valve VA1 is closed when liquid begins to flow and the gas valve is kept open by a spring 5, and gas in the bottle is returned to the reservoir via the tube T. When the liquid level reaches the orifices k its flow stops and member y moves upwards against the grid g to cut off the flow. A compressed-air valve VA2 is then opened and diaphragm M2 inflated thereby closing the gas valve HJ and liquid valve Y; in addition compressed air flows through conduit C3 whereby a diaphragm m is expanded to move a valve closure x inwardly against a spring r to allow the gas in the bottle neck to escape to atmosphere via the passages v, w, r and e. The lower portion of the tube T may be scoured of liquid by momentarily opening the valve VA1. A more elaborate construction is described in which, inter alia, the conduits C 1 -C 3 are circumferentially equally spaced, and the lower end of the stirrup slides about the upper end of the tube T. In a modification, Fig. 10, the pneumatic device consists of pistons 206, 207 in cylinders 204, 205 spaced by a base 203 through which compressed air supply passages pass. In addition to the three vertical conduits for supplying the cylinders for exhausting the gas in the filled bottle by operating a valve 237, a fourth conduit exhausts the cylinders from above the piston 206 and below the piston 207. The valve 237 is moved outwardly by compressed air against a spring 238 to remove a valve 236 from the end of a sealing 240, thereby allowing the escape of gas from a filled bottle. The main liquid valve comprises a solid portion 226 with a triangular head 231, and co-operates with a movable closure member 233 which is urged upwardly by a spring 235 and has a bearing surface engaging the liquid valve.