Patent GB-191421829-A (GB)
Title: Improvements in or relating to Machines for Filling Cans.
IPC: B67C3/30
Filed: 1914-10-31
Granted: 1915-10-21
Abstract: 21,829. Asiatic Petroleum Co., and Jones, H. Averay-. Oct. 31. Fixed-chamber apparatus with automatic control of flow; varying quantity measured in; without valve parts.- An apparatus for filling cans & c . with a measured quantity of petrol &c. comprises two or more series of measuring-chambers 15 which are supplied alternately from two compartments of a chamber 2 in communication with a main supply pipe 1, the supply being automatically diverted from one compartment to the other by means of a pair of pivoted floats in the chamber 2. The liquid is delivered from the measuring-chambers to the cans &c. by siphons 23, which may be started by hand or automatically by the action of the floats. The chamber 2 contains a shoot 6, Figs. 5 and 6, carried on a shaft 7 mounted in ball bearings, and a divided float 12 also carried on the shaft 7. The liquid flows from the pipe 1 into a tank 10 inside the shoot and overflows through one of two spouts 9 into compartments 4 formed by a partition 3, and thence passes through pipes 13 into conduits 14. It passes from the conduits to the measuring-chambers 15 through pipes 16, which are fitted with rods 17 to prevent splashing and with flap valves to prevent surging back when the siphons are started. When the measuring-chambers on one side are full, the liquid flows through pipes 20 into a compartment 5 of the chamber 2 and raises the float, thus tilting the shoot 6 so as to divert the flow to the other set of measuring- chambers. The siphon discharge is started by operating a hand-lever 32, Fig. 4, pivoted on a shaft 28 having arms 27 carrying plungers 22, Fig. 6. An extension of the hand-lever 32 engages a screw 33, Fig. 4, on a graduated arm 30 on the shaft 28, so that as the lever 32 is moved, for example to the left in Fig. 4, the set of plungers on the right-hand side is raised, and at the same time the set on the left-hand side falls by its own weight, raises the liquid level, and starts the siphons. Adjustment of each measuring-chamber separately is effected by adjusting a rod 26 carrying the plunger 22, while one set of plungers may be adjusted simultaneously by means of the screw 33. The hand-lever 32 is provided with a catch 34 engaging a fixed rack 35, and in its middle position, a valve in the supply pipe 1 is held closed by toggle-links 39, 40 connected to the hand-lever by a link 38. An arrangement in which the siphon discharge is started automatically is shown in Figs. 12 and 13, in which the shoot 6 is pivoted on an axis 44 above that of the floats 12, and is reversed by means of a slotted link 47 connected to the float. When the float chamber is filled up to a level sufficient to operate the float 12, a pivoted bucket 48 receiving the liquid from the shoot 6 is tipped by means of links 50 so as to discharge its contents and thus raise the level of the liquid sufficiently to start the siphons. The action of the float is rendered positive and independent of variations in the density of the liquid by means of a rolling weight 53. The conduits 14 into which the liquid flows from the chamber 2 are formed with a bottom sloping to the centre, where a plug is fitted for the removal of sediment. Gauge glasses 43, Fig. 4, are fitted to the chamber 2, and a vent pipe 25, Fig. 6, to each measuring- chamber, and the siphons discharge into funnels 24, Fig. 1, beneath which the cans are placed. The cans may be carried on a turntable.