GB208242A - Improved apparatus for measuring and delivering liquids - Google Patents

Abstract

208,242. Shugg, C. B., and Harper, A. Sept. 18,1922. Fixed-chamber apparatus; with several chambers; controlling passage of air; valve systems : varying quantity measured in.-In apparatus of the kind in which the liquid is drawn from a storage tank into the measuring-chamber by suction and the excess removed through an overflow pipe, a plurality of measuring-chambers is used, each with a fixed overflow pipe which also acts as the suction pipe, and the suction and delivery valves are interconnected so that as one chamber fills another discharges. A vessel 2 is divided by a partition 6 into two separate measuring-chambers 3 and 4, the latter being again divided by a perforated partition 5, overflow openings 7 being situated at the top of each chamber and supply pipes 36 leading from the storage tank 16 to each of the separate chambers 3. 4. Pipes 8 connect the overflow openings to a valve 9 by means of which any one pipe can be put into communication with a chamber 18 exhausted through a pipe 24 and connected through a non- return valve 22 with the storage tank, so that any one chamber can be filled by suction and is prevented from filling above the overflow opening. Interconnected with the valve 9 is a delivery valve 28 which connects a delivery pipe 31 with either of two pipes 27 leading to the bottoms of the two main chambers, so that as one chamber is filling the other may be emptied. A pointer 32 on the operating handle 34 of the suction valve registers with a scale 33 to show the different positions, and the vessel 2 may have a glass inset so that the levels may be checked. To prevent liquid being drawn into the suction pipe 24 a baffle 2b is provided in the chamber 18, while baffles 38 in the vessel 2 prevent swirling, and air-valves 41 which open when suction is removed ensure quick delivery of the measured quantities and return of excess to the storage tank. Valves 37 in the supply pipes open only during suction, and thus prevent communication between the chambers. Venturi tubes 39 may be placed in the pipes 8, 36 to increase the velocity of the liquid.