Patent GB-824019-A (GB)
Title: Improvements in or relating to the transfer of fluids between containers
IPC: F17C5/00
Filed: 1957-03-05
Abstract: 824,019. Bottling. FORESMAN, R. A. March 5, 1957 [March 5, 1956], No. 7345/57. Class 125(2). [Also in Group XVIII] Apparatus for bottling fluids by their selective transfer under valve control to and from a container 54 comprises a filling head 44, Fig. 1, means for positioning a container 120 in fluidtight engagement with the filling head, means associated with the filling head and effective, when actuated, to establish fluid connection between the container and receiver, and means for changing the volume of the receiver to effect fluid transfer between the receiver and the container or fluid source. As shown, the filling head 44 is mounted on a frame 30 which is adjustably mounted on two rams 18 operated through racks 20 and pinions 22 by a handle 26 in order that various-sized containers 120 may be positioned between a receiving block 14 and the filling head 44. Manually-operated spring-loaded inlet and outlet valves 86, 88, Fig. 4, in the filling head are in communication with the receiver 54 which is in the form of a glass cylinder and is disposed inside a tube 48 mounted on top of the head. The volume of fluid admitted through the valve 86 to the cylinder 54 is controlled by a piston 62 which is movable through a rack 34 and pinion 38 by a handwheel 40 ; the upper limit of the piston can be set by a collar 66 and micrometer 70, 72 and locked by a screw 42. A fitting 106, Fig. 5, which is mounted on the underside of the filling head 44, carries an interchangeable adaptor 112 for the reception of the cap 116 of the container 120, and a vertically-slidable piston 144 within the member 106 is arranged, when acted upon by a hand-operated cam 152, to depress a valve stem 148 and so open a valve in the cap 116 of the container. A manuallyoperated spring-loaded valve 134, Fig. 5, in the head 44 controls communication between the cylinder 54 and, through an annular recess 156 and bore 158 in the piston 144, the container. In operation, the filling head 44 is adjusted downwardly until the cap 116 of the container 120 is located in the adaptor 112 and sealed by a washer 124. After exhausting the cylinder 54 by opening the valve 88 and lowering the piston 62, the valve 88 is closed and the inlet valve 86 opened so that pressurised fluid, such as a liquefied gas, is fed to the cylinder 54 until the piston reaches its upper limit. The inlet valve 86 is then closed, the cam 152 operated to open the valve in the cap 116, the valve 134 opened, and the piston 62 lowered so as to dispense the fluid into the container. If desired, the adaptor 112 may engage inside the cap 116 of the container instead of outside as shown. If a liquefied gas is to be dispensed, the air within the container may first be displaced by delivering a small volume of the liquefied gas which will vaporize and, together with the air in the container, be discharged to atmosphere by opening the valve in the cap 116. The apparatus may be used for withdrawing quantities of an elastic fluid from a container for observation in the glass cylinder 54 or for sampling and, if an inelastic fluid is used it may be withdrawn by inverting the apparatus or by using a syphon tube.