Patent GB-252552-A (GB)
Title: Improvements in apparatus for delivering liquids in measured quantities by volume
IPC: B67D7/16
Filed: 1925-06-15
Abstract: 252,552. Dunn, D. S. June 15, 1925. Fixed-chamber apparatus, valve systems and counting mechanism for and varying quantity measured in.-A measuring chamber is provided with a series of inlet and discharge conduits and a series of valves to control the passage of liquid through them so that the same chamber may be used to measure various kinds of oils &c. Inlet pipes 6 from the various tanks pass through a base plate 2 and are connected to a valve box 7 on the top of which is secured a transparent graduated measuring chamber 47. Valve chambers 9, 11 are formed in the valve box 7 communicating with inlet pipes 6 and discharge pipes 12 respectively. The inlet valves 14 rest on sleeves 16 in the valve chambers and are normally closed by springs 17 which engage sliding caps 18 to which the ends of the valve stems are fixed and which normally lie flush with the top surface 8 of the valve box. The discharge valves 21 similarly closed by springs seat in sleeves 23, the upper ends of the valve stems projecting through fixed caps 24 into an annular groove 26 in the upper surface 8 of the valve box. A ring 28 bolted to the valve box with a liquid tight joint accomodates upper and lower valve operating discs 33, 34 of which the first is keyed to a vertical shaft 37 geared at 38 to a horizontal shaft 39 on which is a hand wheel 42. The lower disc 34 is provided with a slot to accomodate the key 36 whereby the disc 33 may have a movement relative to the disc 34 limited by the key 36. Inlet ports 46 in the sliding caps 18 of the valves 14 are adapted to register with inlet ports 46<a>, 46<b> in the discs 33, 34 while discharge ports 48 in the fixed caps of the discharge valves 21 are adapted to register with discharge ports in the discs 33, 34. The discharge pipes 12 are connected to flexible pipes 13 enclosed in a flexible covering 49, the other ends of the pipes 13 being connected to nipples 53 on a plate 51 secured to the inner end of a nozzle member 56 provided with converging liquid passages 61 normally closed by tight spring valves 59 which open under the head of the discharge. A detachable cap 66 may be fitted to the member 56. A piston 69 provided with several cup leathers 71 is mounted within the measuring chamber 47 and has a rod 73 extending upwards to a head 74 acted upon by an adjustable spring 77 in a cylinder 76. A rod 82 also extends upwards from the piston through the top of the measuring chamber and is adapted to engage stops 83 which outstand from a spindle 84 the lower end of which has a graduated handwheel 86 adapted to selectively position any stop in the path of the rod 82. A counter 104 is provided and its operating arm 106 is moved by spaced strikers 107 on the piston rod 73 corresponding with the graduations on the wall of the chamber. A fixed casing 93 surrounds the lower part of the apparatus and a removable cover 94 adapted to slide on uprights 96 surrounds the upper part. The upper and lower casings may be locked together in closed position when the apparatus is out of use. The upper disc 33 is provided with a cam member 111 located in a pocket 112 while a co-operating cam member is adapted to slide in an aperture formed in the disc 34. This disc also carries a fixed cam member 118. In use, the hand wheel 42 is first moved so that the appropriate handle 91 to the kind of oil desired is brought to the mark " Grade. " This brings the discs to the position shown in Fig. 9, ready to operate the corresponding inlet valve. The cam 118 now is just past the stem 21<a> of the discharge valve next behind the required discharge valve. The bandwheel is now moved to " fill " whereupon the disc 33 moves relatively to the disc 34 opening the inlet valve as shown in Fig. 10. The liquid from the tanks is forced in by compressed air. When the required quantity is in the chamber, the handwheel is again moved in the original direction to " discharge " whereupon the discs first come into the position of Fig. 9 to allow the inlet valve to close, and then move together for the cam 118 to operate the discharge valve. A portable form of the apparatus is described in which the tanks and the devices above are mounted on wheels.