Abstract: A bone or dental cement mixing method and preform body are disclosed. An elongate rod is inserted into a cement mixing chamber. Cement powder is poured into the mixing chamber and around the rod to form a preform body in the chamber. The rod is moved laterally through the powder to form a channel in the body. Cement liquid is poured on top of the body, flows down the channel and is absorbed into the body. The body and liquid are then physically mixed by a conventional cement mixing device to form a cement with cement liquid uniformly distributed throughout the cement.

Abstract: The apparatus for homogeneous mixing of fluid components includes a feed tank (B1) for a liquid component having an overflow weir dividing the feed tank (B1) into a first chamber and a second chamber; another feed tank (B2) for another fluid component; a mixing pipe (MR) for mixing the fluid components; a pump (P3) having a regulated drive motor connected to the second chamber of the feed tank (B1) to feed the liquid component to the mixing pipe (MR); another pump (P1) connected to the other feed tank (B2) to feed the other fluid component to the mixing pipe (MR); a collecting tank (B3) having an overflow weir to maintain a uniform counter-pressure at the mixing pipe (MR) and being connected to the mixing pipe (MR) to receive the mixed product formed from the liquid component and the other fluid component; and additional pump (P2) for circulating the liquid component from the second chamber of the feed tank (B1) to the first chamber of the feed tank (B1) to maintain a level of the liquid component in the firs

Abstract: The invention is an in-line mixer without moving parts, with a generally conical shear head pointed in the upstream direction within a pipe, and centered near the downstream side of an annular seating ring fastened to the inside surface of the pipe. In the upstream, slanted face, or high pressure side of the shear head, there is a series of generally circular ports bored through the shear head. The slanted face of the conical shear head extends through the center of the seating ring in the upstream direction, and is adjusted to be located very close to the downstream side of the seating ring. At the downstream end of the slanted face of the shear head is a first sharp, approximately 90 degree edge leading away from the inside surface of the pipe in the downstream direction, which first edge is adjusted to be located very close to the inside surface of the pipe.

Abstract: A beverage brewing machine including a reservoir for holding cold water, an electric heating unit which during operation heats the cold water to produce a brewing water, and a brewing unit. The brewing unit has a receiving chamber for receiving a filter insert into which product is placed. The filter insert has a water-permeable wall. The receiving chamber has a collecting groove which receives water and delivers the received water to the outside of the water-permeable wall when the filter insert is resting in the receiving chamber so that water flows through the sidewall into an upper portion of the product in the filter insert. The reservoir includes a first water outlet through which a portion of the brewing water is delivered onto the top of the product in the filter insert, and the reservoir includes a second water outlet through which another portion of the brewing water is delivered to the collecting groove and from there through the water permeable wall of the filter insert.

Abstract: An apparatus in which a glass rod is inserted into a spinning oven to perform spinning and glass fiber yarn is drawn out at a shutter located in the lower end of the spinning oven, comprising a timer for measuring a time from the start of heating of the glass rod inserted into the spinning oven until the fall of glass drops formed by the heating of the glass rod and a detector below the shutter for detecting the fall of the glass drops, for the purpose of automatically opening the shutter when a preset time of the timer is over and automatically closing the shutter by detection by the detector, thereby dispensing with a worker's monitoring of the spinning oven for opening and closing the shutter and preventing a danger of giving damage to the shutter and the spinning oven in the event of delayed shutter opening-closing timing.

Abstract: The invention relates to an apparatus for treating solid, liquid and/or gaseous materials with an activator with at least three coaxially arranged paddle rows (3, 4, 5) which are drivable in a contrarotating manner with beater paddles (6) having set angles of incidence (6), with the circumferential speed of the outer paddle rows (3, 4, 5) being between 70 m per sec. and 160 m per sec. In order to increase the extent of the achievable activation of the particles of the material and thus the performance of the apparatus and the quality of the manufactured products it is provided that the width (b.sub.1, b.sub.2, b.sub.3) of the paddle rows (3, 4, 5) decreases outwardly by at least 2%, preferably by at least 5% and maximally by not more than 10%.

Abstract: A mixer for mixing a container's contents has a holder for holding the container, a first mechanism for effecting rotation of the holder, and a second mechanism for effecting reciprocating linear motion of the holder. The first mechanism effects rotation of the holder and the second mechanism effects reciprocation of the holder simultaneously so as to effect thorough mixing of the contents of the container held thereby.

Abstract: A kitchen appliance for processing food by chopping, mixing, whipping, kneading, pressing, and preparing emulsions from food has a horizontally positioned cylindrical vessel for receiving food. A tool for processing food in the vessel has a diameter that matches the inner diameter of the vessel. A drive motor is connected with a drive shaft to the tool for driving the tool in rotation. An advancing unit is provided for advancing the tool in the axial direction of the vessel over its axial length. The advancing unit has a stationary spindle and a slide connected to the spindle so as to be slidable on the spindle in the axial direction of the vessel, wherein the slide is displaced by an electric motor on the spindle in the axial direction. The drive motor of the tool is connected to the slide to allow for axially advancing the tool within the vessel.

Abstract: The invention relates to a coupling device on paint stirring machines.This device calls upon a driver (5) in the form of a sleeve (7) receiving, in its bore, and with slight clearance, a stirring rod shank, the said sleeve being equipped with at least one longitudinal slot (9) and with external lateral notches, the stirrer shank (3) including at least one transverse drill hole (15), and a clip-shaped element (17) including two elastic tabs pointing toward one another in order elastically to surround the said sleeve of the driver, each of the said tabs further including an internal projection respectively complementing each of the said notches, the clip element (17) being provided with a pin element or rod (25) capable of engaging in the said drill hole of the stirring rod.

Abstract: A method and apparatus for distributing water in the pipeline is set forth. The pipeline water collects in the bottom and flow along the pipeline. The present disclosure sets forth a set of N tubes which have relatively small inlet and outlet openings. The several tubes joined at the inlet end, typically by tacked welding thereby defining an inlet end to gather up all of the flowing water in the pipeline which is then directed along the tubes. The outlet ends of the tubes terminate at elevated locations in the pipeline so that water droplets are entrained at selected heights in the pipeline. In one form upstream and downstream transverse members support the tubes.A fluid flow diffuser for installation in a pipeline in advance of a fluid sampling device is set forth.

Abstract: The invention relates to a stirrer, particularly for paint-stirring machines.This stirrer is provided with at least two blade elements (13), the surface of which has helicoid development, these being fixed with equilibrium of the rotation to the shaft, at least one of the blade elements being formed along a generatrix (5) in the horizontal plane including, over at least a part of its length, curvature in a spiral shape relative to a point forming a pole (I), for example on the stirring shaft.

Abstract: In an espresso coffee brewing machine (1) the filter-holder box (10) is articulated and can be operated by a user through a mechanical linkage (18, 15, 7) suited to moving it between a first closed position under a hot-water distributor (4) and a second open position in which it is distanced at an angle from said distributor (4) so as to present the filter (12) exposed and tilted towards the user that can load a cartridge of coffee into it (FIG. 1).

Abstract: Two fluids having different temperatures are to be mixed while supplying one fluid (A) through a main pipe (1) and conducting the other fluid (B) from a secondary pipe (2) into the main pipe. A mixing device (6) comprises a connecting branch which extends essentially radially into the main pipe (1) from the secondary pipe (2) and along whose outside the first fluid (A) may pass and which is formed with at least one nozzle-shaped aperture through which the second fluid (B) can be conducted into and mixed with the passing first fluid. The connecting branch comprises at least one through channel (13) extending transversely of the connecting branch and suitably in parallel with the longitudinal extent of the main pipe (1) and through which part of the first fluid can pass in a central partial flow.

Abstract: A method of controlling a continuous multi-component slurrying process at an oil or gas well comprises continuously flowing substances for creating a slurry in response to a slurry flow rate factor and continuously flowing another substance for the slurry in response to a flow rate of at least a predetermined one of the other substances or the slurry itself. The method can include density control, slurry (tub) level control, and a combination of such controls. The method can operate in either closed loop or open loop manner, and control can be effected with either of two types of control signals depending on whether the controlled device is an integrating or non-integrating type. The method can also provide for bumpless transition between manual and automatic control.

Abstract: A mixing chamber (3) and a gas inlet chamber (5) are concentrically arranged in a closed housing (1) and divided from one another by a tubular partition wall (7) provided with micropores. A flow of a liquid, foamable medium is introduced by a pump (21) axially into the mixing chamber (3). At the same time, air produced by a compressor (23) is introduced via a housing inlet (17) into the gas inlet chamber (5) under such a pressure that the air can penetrate through the micropores in the tubular partition wall (7) into the mixing chamber (3). The partition wall (7) surrounding the mixing chamber and the peripheral wall (9) are replaceably mounted between two flanges (11 and 12). The cross-sectional profile of the axial inlet and outlet (15 and 16) is matched to the cylindrical cross-section of the mixing chamber (3) so that in operation a laminar flow of the foam mixture substantially parallel to the axis occurs through the mixing chamber (3).

Abstract: A basket is so disposed that a portion of the outer periphery thereof is faced to the inner peripheral wall on one side of the tank. The starting materials thrown from the hopper portion formed on the other side of the tank which is opposite to the above inner peripheral wall, are efficiently premixed by the secondary vanes that are rotating near the center of the tank under the basket. The grains of the blend are dispersed by the primary vanes that are rotating in the basket 20 and pass through the slits formed by numerous wires having a circular shape in cross section in the side wall of the basket.

Abstract: Industrial apparatus for mixing viscous material comprising a stationary mixing tank (1) having an inlet (7) and an outlet (8), a rotary stirring element (12) within the tank, duct means (23) interconnecting said outlet (8) and inlet (7), and an impeller (18) mounted for rotation with said stirring element (12), to thereby urge said viscous material towards said outlet (8) to at least assist the flow of material from said outlet through said duct means (23) to said inlet (7) and its recirculation through said tank (1). A macerating pump (29) is interposed along said duct means (23) to assist with mixing and recirculation.

Abstract: A method and apparatus for the continuous conditioning of a cell suspension, more particularly whole blood, in order to obtain an erythrocyte concentrate which is returned to the patient by autotransfusion. In accordance with the invention there are three treatment stages, that is to say sedimentation of the cell suspension, the addition of washing solution to the cell concentrate and renewed sedimentation and separation of the washing solution.

Abstract: An espresso machine has an underside provided with a brewing head into which a strainer holder having a handle can be inserted from below with a strainer inserted in the holder. The brewing head has slots and the strainer holder includes corresponding lugs that fit through the slots so that the strainer holder can be released from or locked to the brewing head by a pivoting movement of the strainer holder around an axis of the brewing head which places the lugs in or out of alignment with the slots, respectively. A positioning ring has a top end rotatably secured to the brewing head and a cutout that is open toward the bottom end of the positioning ring for receiving the handle of the strainer holder.

Abstract: A centrifuge rotor and method for gradient density separation which supports a generally cylindrical volume of sample solution with its axis inclined to the spin axis at an angle which is optimized for maximum separation efficiency while reducing contamination by undesirable centrifugates upon reorientation of the desirable centrifugates. .Iadd.The sample solution is contained in a centrifuge tube which is closed at its top end by a top portion which is supported by a support cap. The undesirable centrifugates are pelleted to the end corners of the inclined centrifuge tube. The rotor and method are particularly adapted, for example, for separation of nucleic acid into plasmid DNA and chromosomal DNA by density gradient centrifugation. .Iaddend.The optimum angle is determined based on the relationship .theta.=Tan.sup.-1 (D/15L).sup.0.5 where D and L are respectively the diameter and length of the cylindrical volume of the sample solution and .theta. is the angle of inclination.