Abstract: In order to improve the wear-resistance of highly stressed surfaces of a kneading disc in a helical extruding machine, the exposed tips of the kneading disc are provided with inserts of an extremely wear-resistant, hard material. In a variety of embodiments, the tips of the lenticular kneading disc are provided with bores and recesses for receiving the hard inserts. Advantageously, the recesses are cylindrical wells in which cylindrical inserts are soldered or cemented. The inserts may be made from hard metals or ceramics, for example tool steel or tungsten carbide or the like.

Abstract: An improved infusion and stirring device is disclosed comprising a handle member having a first and a second portion. A first and a second retaining element are respectively secured to the first and the second portion of the handle member to stir an infusion liquid upon movement of the handle member. The first and second retaining elements engage opposite sides of a porous bag containing an infusion solid, such as a tea bag. A latch interconnects the first and second portions of the handle member thereby encompassing the porous bag to retain the porous bag between the first and second retaining elements as the handle member is moved to stir the infusion liquid. The improved structure may be readily injection molded from a plastic material.

Abstract: A one piece enameled agitator is equipped with an impeller that can be wound or threaded through an opening in an associated container or vessel that is smaller than the impeller diameter.

Abstract: The invention provides an apparatus for enclosing a filter bag, filled with a portion of coffee powder and provided with at least one moving wall and a handle for producing a pump-like action driving a current of water transversely through the filter bag.

Abstract: A stirring rod for use in a heating vessel which includes a contractable generally circular upper portion which is joined to a generally hooked shaped lower portion by a vertically extending rod section.

Abstract: Disclosed is a device for mixing and/or conveying, in particular for mixing and conveying a developer composition in an electrophotographic copying machine. The device comprises an elongated member which is rotatable about its longitudinal axis, this member comprising a T-shaped lateral cross-section which has been spirally twisted about its longitudinal axis, whereby at least two portions of the T cross-section comprise helically extending mixing and/or conveying elements. Also disclosed is a method for manufacturing such a device.

Abstract: A paint stirrer paddle comprising a long, narrow, corrosion-resistant metal blade having lengthwise thereof portions displaced from the plane of the blade, said portions being concavo-convex in transverse sections, of different length and of different width, and the part of the blade containing the displaced portion of lesser width and length constituting the handle of the paddle.

Abstract: A jet impeller mixer-agitator having a shaft adapted for rotation by a power source, a hub communicating with the shaft and at least one hollow blade fixed to the hub, the hollow blade having a fluid entrance opening on the effective face of the blade and a fluid exit opening on the non-effective face of the blade with a fluid passage connecting the fluid entrance opening and the fluid exit opening so that upon rotation of the shaft the fluid is directly forced into the fluid entrance opening, through the fluid passage and out of the fluid exit opening.

Abstract: A hand mixing apparatus is described comprising a handle having an upper and a lower section. The upper section is provided for manually rotating the apparatus and may comprise a high-friction surface including a slight bulge. Attached to the lower section there is provided one or more slotted mixing blades. The mixing blades comprise, separately and in combination, straight and angulated rectangular blade elements as well as L-shaped blade elements.

Abstract: An improved frangible beverage stirrer is disclosed which is capable of being broken into two toothpicks. The utensil includes a handle portion having an upper surface and a lower surface with a relatively long dimension along an axis. A first end of the handle has a gripping surface and a second end of the handle opposite thereto has a spoon bowl or other appliance mounted thereon. The handle portion has a first straight diagonal groove in the upper surface thereof located between the first and second end and oriented at an angle with respect to the axis. A second straight diagonal groove parallel to and juxtaposed with the first groove, is in the lower surface of the handle. The handle is capable of being broken into two portions along the grooves by grasping the gripping surface and the spoon bowl and applying a torque along the axis, thereby forming two toothpicks with their respective pointed ends formed by the grooves.

Abstract: A mobile pet waste liquifier including a main frame provided with a handle portion, a pair of wheels, a blender motor mounted on a shelf carried by the main frame and located above the wheels, a receptacle, carrying a blender blade assembly and a top lid, mounted relative to the blender motor, and arms fixed to the main frame in combination with a flexible band to retain the receptacle and blender blade assembly in place atop the blender motor. A kick stand is pivotally carried at the bottom portion of the main frame.

Abstract: An impeller for producing a stirring action within a fluid medium contained in a vessel includes blades, each blade being shaped to produce a variation in the lift coefficient of the impeller from the rotational axis thereof to the blade tip, in order to provide a centrifugal or centripetal component, as case may be, of the outflaring or reduction imparted to the impeller blowing cone.

Abstract: A universal agitator for use with a paint spray can and gun is fluid operated off the same fluid source used to power the spray gun. The agitator comprises a vaned paddle wheel which is mounted on a shaft and which is disposed in the paint can. The shaft has a splined portion which is sealed in a housing. The fluid source rotates the shaft to likewise rotate the paddle wheel to maintain the paint in an agitated state.

Abstract: An apparatus for mixing liquids by hand is described comprising a handle having an upper and a lower portion. Extending from the lower portion is slotted mixing blade means and terminating the lower portion there is provided a salient surface for preventing the slotted blade means from rubbing against an underlying surface and for reducing friction between the apparatus and the surface when the apparatus is placed against and rotated about a line perpendicular to the surface.

Abstract: A blender for mixing slurries, suspensions and the like that include particulate solids in a liquid characterized by a plurality of blades disposed along a bottom mixing zone of an elongate central shaft, the blades being fixedly connected with the shaft and extending radially outwardly therefrom and balanced to minimize rotational vibration; the blades all having a twist therealong. A bottom blade is twisted so that the outer radial portions have a critical angle .alpha. with the trailing edge tilted upwardly for moving the solids radially outwardly and upwardly. A second blade at the top of the mixing zone is bent downwardly and also has a twist, the angles of bend and twist being such that the solids are forced radially inwardly and downwardly to a plurality of mixing blades therebelow and splash is prevented. An intermediate mixing blade is provided with critical angles on the outer radial portions for mixing and forcing the solids downwardly.

Abstract: A liquid stirrer for containerized liquids and particularly paint comprises a spanner bar having lips on each end thereof to engage between a container rim and lid, and a preferably semi-flexible blade structure depending from the spanner bar and extending into the liquid container such that reciprocating rotation of the paint can effects stirring of the liquid therein.