Abstract: Systems for mixing gaseous medium streams at different temperatures are for changing the direction of flow of a stream which alleviate the effect of pressure losses. A plurality of hollow airfoil shaped vanes are positioned within a first gaseous stream, and the second stream is conveyed through the hollow vane and discharged into the first stream through a slot at the trailing edge of the vane. Fixed or movable flow direct the rate and direction of the discharge flow.

Abstract: A stirring apparatus includes a motive device, such as a motor, fixedly mounted on a support brace adapted to extend across the open top portion of a container. A paddle is connected releasably to a connector, which, in turn, is driven rotatably by the motive device. The paddle extends into the interior of the container for revolving about its axis for stirring the contents thereof. The support brace includes a device to enable the length of the brace to be adjusted longitudinally so that the brace can fit over different size container openings, and has devices for securing it releasably to the container. A plurality of different size interchangeable paddles are provided and each one is adapted to be connected removably to the motive means so that the paddles can be interchanged readily and can be cleaned easily.

Abstract: The present separation apparatus makes it possible at low cost continuously to separate a mixture according to the density of its constituent particles which have been graded to an upper limit of the particle size of any shape, and is particularly suitable for the separation of electrical storage battery waste. A separation medium, consisting preferably of a liquid and a gaseous flow medium, fed into a vertical separator column (1) via a mixing nozzle (10) flows through the column from the bottom upwardly. Above a constriction (7) adjacent a through-flow aperture (9) there is a baffle (15) which is movable transversely relative to the longitudinal axis (4) of separator column (1) to form a flow channel (20) leading to the through-flow aperture (9). The width of the flow channel (20) when the baffle (15) lies against the internal wall (1a) of the separator column (1) is just sufficiently large to let the particles through.

Abstract: A dough mixing and kneading device which comprises a horizontally disposed container including an elongate cylindrical space closed by walls at the ends of the container and three blades within the space extending lengthwise therein. The blades are secured to and driven by drive shafts protruding through the end walls of the container. The blades when driven rotate along circular paths radially spaced from each other, one of the blades rotating closely adjacent to the inside wall surface of the container thereby acting as a scraper. A lengthwise opening at the top of the container is provided for loading the container with dough and discharging the dough after mixing and kneading by rotating the container about its center axis. A fixedly mounted cover closes the opening when the opening is turned into its upwardly facing position.

Abstract: A rotating fluid jet agitator for mixing, dispersing, dissolving and suspending powders in liquids comprising at least one primary jet mixing nozzle arranged to rotate about a generally vertical axis submerged at a predetermined elevation in a tank to project a stream of liquid radially outward from said vertical axis. The agitator includes a drive nozzle arranged to deliver a generally horizontal component of thrust which causes the agitator to rotate about the vertical axis, a speed control means and a pump for circulating liquid from the tank to the mixing nozzle and drive nozzle.

Abstract: A device for driving an agitator, in particular an aerator for waste water, wherein the agitator is coupled to the output shaft of the driving device, which output shaft in its turn, is coupled to a revolving table.Said revolving table has an outer ring gear which is in engagement with the cogged wheel of a motor and also constitutes the outer ring of a revolving bearing the inner ring of which is carried by a rigidly supported, axially adjustable bridge.