Patent GB-222888-A (GB)
Title: Process and apparatus for measuring liquids especially inflammable liquids supplied by suction from a low-level supply tank
IPC: G01F11/00
Filed: 1924-10-06
Abstract: 222,888. Sauser Akt.-Ges., (Assignees of Wydler, H.). Oct. 5, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Fixed - chamber apparatus; controlling passage of air and gases for valve systems for; varying quantity measured in; with discharge by separate fluid; with counting and registering apparatus.-A construction of apparatus is described in which a measuring chamber is filled by suction and then is automatically discharged by a syphon-like action to a preselected level. The suction pipe 2 of the air-pump is in communication with the chamber 1 by means of passages 37, 38, narrow passage 79 and upstanding pipe 62. The pipe 38 leads from the passage 78 to a chamber 40 in communication with the space 43 above the liquid supply pipe 44 by narrow passages 41, 42. A branch pipe 45 leads from the pipe 38 to a chamber 47 closed by a diaphragm 46. Two concentric tubes 64, 65 depend from the top of the chamber, the outer tube 64 being fixed while the inner one 65 may be rotated by a head 70 which engages a squared end 68 of the tube 65. This tube is also pressed down by a strong spring 75 so that at certain times a rod can be moved to open the discharge valve 56 normally held against its seat by a break spring 71. The outer tube 64 has a series of vertically aligned spaced holes 80, while the tube 65 has a series of spirally arranged holes 81 arranged at corresponding heights. In the position shown, a stud 72 engages a raised part 73 and the spring 75 is compressed, the valve 56 being closed and the holes in the tubes 64, 65 out of alignment. A pivoted arm 54 acted upon by a torsion spring so as to turn clockwise is held in the position shown by a hook on a pivoted lever 50 also acted upon by a torsion spring tending to turn it counterclockwise. The other end of the lever 50 engages the diaphragm 46. To obtain a certain quantity of liquid, the head 70 is rotated so that the required mark 82 is brought to the zero point 83. This brings the selected holes 80, 81 into the required register. The spring 75 is still compressed because a rod 57 is held up by the arm 54. The pump is now started and the liquid from the pipe 44 is drawn into the chamber 1 rising also between the pipes 64, 65 in the space 63. When the chamber is full the liquid overflows into the pipe 62, sealing the passage 79, whereupon the chamber 47 is exhausted through the pipe 45 and the diaphragm yields, causing the catch to trip the arm 54 and the spring 75 to become active, and through the rod open the discharge valve. At the same time an arm 58 on the pivot 53 has opened an air valve 59, and placed chambers 47 and 37 under atmospheric pressure. At this point the diaphragm snaps back and the hook of the lever 50 is swung below the arm 54. Liquid is discharged by syphon action until the level falls to the level of the selected holes in register when the syphon is destroyed. The air valve 59 remains open during discharge. To obtain a further quantity the head 70 must first be put to zero and the air valve 59 closed by pressing on the spring push 91, whereby the arm 54 will be slid under the hook of lever 50. The same air pump may be used to exhaust vessels supplied by separate pipes leading to sources of different liquid supply. A counter 90 is actuated from the head 70 by the one-way movement of a pawl 87 engaging a toothed ring on the underside of which are undulations 86 corresponding with graduation marks 82.