GB172726A - Improved apparatus for delivering measured quantities of liquid - Google Patents

Abstract

172,726. Moorhouse, A. H. Sept. 13, 1920. Fixed - chamber apapparatus ; controlling passages of air and gases for ; valve systems for. - Liquid is drawn into the measuring chamber by suction, an overflow pipe is provided, and float-opera.ted means are actuated by the overflow to cut off the suction connection to the chamber. The pipe b from the top of the measuring chamber a leads to a float chamber c to which is also connected a pipe f and an air-vent i. These pipes, together with the pipe n and liquid supply and discharge pipes, are controlled by a cock g operated by the handle h. The pipe q is connected to a source of suction, and in one position of the cock is placed in communication with the pipe f, the pipe n connected to the chamber being at the same time placed in communication with the liquid admission pipe. The air is exhausted from the chambers c and a, and the liquid drawn into the chamber a until it overflows into the float chamber. The float d rises and closes a valve e in the pipe f, thus cutting off the suction. The handle h is then placed in the other position in which the pipe n communicates with the discharge pipe, and the pipe i is placed in communication with the atmosphere, the chamber c also being open to a drain pipe j.