Device for measuring liquids or gasses

Claim 1

Device for measuring a liquid or gas, comprising two separate chambers with a determinated content, a common inlet for both said chambers, a common outlet for both said chambers, a hollow cylinder with radial inlet openings, being solidly fitted transversally in front of the inlet of the device, an axially sliding guide bushing positioned in eaCh end of said cylinder and extending into the adjacent one of said chambers, each bushing being provided with a through opening interconnecting said hollow cylinder with its adjacent chamber, a rod connecting both bushings, a valve being mounted on said rod and slidable between both guide bushings from one side of said radial openings in said cylinder to the other side and closing alternately the through opening of one of said guide bushings, means in each of said chambers for expelling alternately the medium out of each chamber, said means being interconnected and adapted to move alternately said guide bushings and the valve closing one of said bushings to the other side of the radial openings of said cylinder, closing means between the outlet of the device and both of said chambers and adapted to receive actuating pressure of the expelled medium.