Shaking machine comprising at least supports for the treated matter

Claim 1

In a shaking machine of the type having a frame, a drive mechanism and at least two supports, for the matter to be treated, which are mounted one above the other and guided and connected to the drive mechanism in a manner such that, in operation, all points of the support can execute horizontal circular movements at mutually equal velocities along paths having mutually equal radii, the improvement comprising, in combination, at least one respective balance body connected to each support and mounted for rotation relative thereto in a manner such that, during operation of the machine, the center of gravity of each balance body executes a horizontal circular movement which is dephased, relative to the movement of the center of gravity of the associated support, by a constant phase angle; said balance bodies having dispositions and dimensions such that the inertia forces occurring during operation of the machine, and the torque produced thereby, substantially compensate each other; and means for rotating each said balance body comprising two gears, having equal numbers of teeth, rotatably mounted in each support, a respective transmission element interconnecting the two gears of each support, and a vertically oriented drive shaft rotatably mounted in said frame and driven by said drive mechanism; one gear on each support being non-rotatably and eccentrically supported on said drive shaft; the other gear on each support being non-rotatably connected to the balance body acting at the center of gravity of the associated support.