Patent GB-658808-A (GB)
Abstract: 658,808. Measuring liquids by volume. SOC. POUR L'UTILISATION RATIONNELLE DES GAZ. Feb. 9, 1949, No. 3571. Convention date, Feb. 9, 1948. [Class 106(v)] In apparatus for filling containers 6a, 6b, with predetermined volumes of liquid two reservoirs 1, 2, each having valved inlet and outlet pipes and controlled for alternate filling and discharging are connected together by means comprising a measuring chamber which ensures that when a volume of liquid enters one reservoir an equal volume leaves the other automatic means being provided for closing the outlet pipe of the discharging reservoir when said predetermined volume has passed to the container. Inlet pipes 4 are controlled by valves 7a, 7b, whilst valves 5a, 5b, control outlet pipes 3 the valves, which are operated by spring loaded buttons, being mounted on a board 17 together with a pivoted lever 18 which when it is in the dot-and-dash position shown rests on the push buttons of valves 5a, 7b, which are then open. The bottoms of the reservoirs are interconnected by pipes 23 and a measuring chamber bounded by discs 21a, 21b, and separated by a diaphragm 22. Branching from pipes 23 are pipes 24 connected with chambers 25a, 25b, each closed by a diaphragm 26. Bearing upon this diaphragm is a vertical rod articulated to a lever 28 and surrounded by a spring 29 tending to push the end of the lever. The bottoms of reservoirs 1, 2, as well as the measuring chamber may be filled with a liquid heavier than the liquid filling the containers and immiscible therewith. In operation lever 18 is set as shown and is held by the corresponding turned up end of lever 28. Valves 5a, 7b are thereby open and petroleum flows into reservoir 2 diaphragm 22 being then pressed against disc 21a, whereupon pressure in chamber 25b increases so tilting lever 28 and releasing lever 18 which returns under the action of spring 20 to the neutral position thus effecting closure of valves 5a, 7b. When the lever 18 is moved to open valves 5b, 7a, a similar cycle of operations occur the petroleum flowing into reservoir 1 and discharging from reservoir 2 the tilting of the lever 28 eventually effecting the closure of valves 5b, 7a. Variation of the volume of liquid measured by the apparatus may be obtained by varying the volume of the measuring chamber. This may be effected by securing the discs 21a, 21b, to threaded shafts and varying the distance between them. Pipes 23 may be connected to several chambers arranged in parallel. In the embodiment shown in Fig. 5 the bottoms of reservoirs 1, 2, are connected to cylinders 37 in which a common piston 39 slides. Automatic operation of the valves is by a lever 41 formed integral with the piston 39 variation of volume being obtained by adjustable stops 43 and fixed stops 44. A lighter fluid may be used in conjunction with the liquid with which the containers are to be filled in the aforementioned devices in which case the device is rotated through an angle of 180 degrees. Movement of the lever 18 from the neutral position may be automatic a servomotor being employed. In the Specification as open to inspection under Sect. 91 a further embodiment, Fig. 6 (Cancelled), is described in which reservoirs 1, 2, are provided with floats 45a, 45b, of density between that of the filling liquid and that of the liquid at the bottom of the reservoirs. When the floats rise they operate valves 47 at the top of the reservoirs thereby arresting movement of the liquids the volume measured being adjustable by varying the quantity of auxiliary liquid in pipe 23 and the lower parts of the reservoirs. This subject-matter does not appear in the Specification as accepted.