Liquid proportioning device

Claim 1

A controlled pumping device for accurately maintaining a desired volumetric proportion between two fluids which comprises metering means responsive to the volume flow of a primary fluid, said metering means including rotatable output means rotatable in direct proportion to the volume flow rate of said primary fluid, a wobble plate drive means rotatably driven by said rotatable output means, wobble plate means tiltably mounted on said wobble plate drive means, a piston chamber situated above said wobble plate means, intake and exhaust passage means for receiving and discharging a secondary fluid via said piston chamber, a piston in said piston chamber, piston rod means operably connecting said wobble plate means and said piston for driving said piston as said wobble plate means revolves, wobble plate tilting means operatively connected to said wobble plate means for varying the tilt of said wobble plate means, control means coaxial with the axis of rotation of said wobble plate means for manually operating said wobble plate tilting means to vary the stroke length of said piston in response to the degree of tilt of said wobble plate means, register means for registering the volume of flow of primary fluid driven by shaft means rotatably journaled in said control means, means rotatably mounting said register means on said device, and means operably connecting said register means with said control means for operating said control means upon rotation of said register means.