GB230090A - Controlling apparatus - Google Patents

Abstract

230,090. Tagliabue Manufacturing Co., C. J., (Assignees of Bast, F. J.). March 1, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Fluid-actuated valves. - Valve apparatu,s for controlling a series of operations in a plurality of tanks consists of a number of air-pressureoperated valves and lever-cam devices actuated by clock-mechanism. The application to the pasteurization of milk is illustrated, the operation being such that when a cycle is completed in one tank, an intermediate point is reached in another, and the first step is occurring in another. The cycle with regard to the tank 10 is as follows :-The cam 27 is rotated by a clock 41, the lever 25, Fig. 4, is rocked about its pivot 26, a ball valve 19 is moved and air in a chamber of the inlet valve 13 is released. The tank 10 is thereupon filled with milk. Similarly a valve 15 is operated by a compound lever 31, 33, Fig. 3, to admit hot water to heating coils in the tank. The temperature is regulated by a thermostatic bulb 39 connected by a capillary tube 38 to a capsular spring 37 or like device, the lever 33 moving the air valve 22 according as more or less heat is required by the milk in the tank. The arrangement is such that both the filling of the tank and the heating to pasteurizing temperature require the same time, say 30 minutes. At the end of this time the cams allow the valves 13 and 15 to close. The outlet valve 17 is then opened by the action of a cam 30. The mechanism controlling the operations in the tanks 10<a> and 10<b> is similar.