Patent GB-270372-A (GB)
Title: Improved apparatus for delivering liquids in measured quantities by volume
IPC: B67D7/16
Filed: 1926-01-25
Abstract: 270,372. Wray, G. Jan. 25. 1926. Rack-and-pinion actuated pumps; stroke, varying; measuring devices.-A measuring-vessel with one or more measuring-compartments of different capacities is mounted rotatably so as to be set firstly under a supply pipe, by means of which a compartment is filled with petrol &c., and secondly in a position in which the contents are delivered to a user. The sides of the measuring-chambers and of the casing may be transparent, and the axis of rotation may be horizontal or vertical. Locking-devices are provided for the measuring-vessel and for a variable, stroke pump. Figs. 1 and 2 show a device where- 'in a frusto-conical measuring-vessel B is formed by a casing B<1>, a transparent front b<1>, and a back b<2>, and by four radial partitions b<6>, dividing the vessel into two compartments of one gallon each, one of a half-gallon, and one of a quart. This is mounted in a casing A<1> with a glazed front a' and back a<2>. Oil is supplied by a pipe D' until it overflows through the notches b<8>, and runs back to the store tank by the passage b<9>, b<10> and the pipe a<5>. When the overflow is observed, the supply is stopped, and the vessel is rotated on a horizontal axle b<3> by bevel-gearing b<4>, or, in a modification, by chain-gearing; the liquid then runs out into the sump a<3> and a delivery pipe a<4>, when the undermost compartment takes the topmost place ready to be filled whilst the first compartment is emptying. The front and back parts of the casing A', served respectively by the outflows a<4>, a<5>, are divided by an annular partition. In a modification, the compartments are arranged vertically in a drum on a vertical axis, and rotate in a casing A<1> wholly or partly or glass. At the bottom of each compartment, closing it, is a lift valve, which is raised, as it comes to the discharge position, by a cam surface mounted inside the casing so as to engage with the depending stem of the valve. The supply pipe ends in the neck of a bulbous air vessel into which rises a small vent pipe which prevents the too sudden inflow of liquid. The wheel E, Fig. 10, by means of which the measuring-vessel is rotated, is made with an inner edge formed in one place with a cam-like rise and in another with a cam-like recess. A roller g<3> on a lever g' moves on this edge, and effects the oscillation of a vertical rod G. carrying stops g<1>, g<2>, one of which is thus brought into the path of an arm p<8> on the piston. rod p<8> of the pump. A spring g<5> keeps the roller g<3> in place. The pump is actuated by a handle on the axle p<4>, and by toothed wheels p<2>, p<5> and a rack p<1>. When a compartment of the measuring-device is being filled, the wheel E is locked by a rod H, which is forced up, so that the upper end of the rod engages with a recess in the rim of the wheel, by a spring under its lower end as soon as the upward movement of the pump piston causes the part p' to release the lever h<3>. The measuring-chambers, during filling, are also locked in position by a floatoperated lever i', Fig. 31. This, when the chamber is empty, is in the position shown in dotted lines, its end being free from a stop i<8>. As the float I, which moves on a rod i<1> between stops i', i', rises, the parts i<4>, i<8> engage; when the compartment is filled, the part i<4> moves to the position shown in full lines, and the compartment is free to be rotated by the hand-wheel E. The joints between the glass front b<1> and back b" and the walls of the chamber B are formed as shown in Fig. 27. The parts b' are surrounded by tie-rods b<29>, which draw up to the glass the grooved strips b<30> with packing b".