Abstract: In known processes and known apparatus for mechanical separation of a combination of meat and bone into useful fractions, the combination is conveyed as by a screw through a screen, which constitutes a portion of an elongated cylindrical conduit, and softer components are expressed through the screen, while harder components are contained by the screen.

Abstract: The organic pollutants in a waste water stream can be reduced 90-95% by providing oxygen to sludge organisms for biological oxygenation of the pollutants. The raw waste water and activated organisms (sludge containing little or no pollutants) are mixed in a vessel for less than 30 minutes. In this vessel, the organisms absorb and adsorb 90-95% of the organic pollutants present in the influent raw waste water. Any means for gentle agitation can be used in this vessel. The waste-enriched organisms are separated from the supernatant liquid in a clarifier and sent to an oxygenation vessel where the organisms metabolize the waste by treatment with an oxygen-containing gas having at least 30% by volume oxygen. The thus-activated organisms are returned to the mixed liquor vessel to complete the cycle.

Abstract: An adjusting and tuning arrangement is provided in a microwave oven to adjust the energy distribution to various areas of the oven cavity such as defined areas or the area of a sensor assembly on a tray inserted in the oven and also to balance the distribution of energy between the load articles on the tray and the sensor assembly or between various load articles. Two electrically conductive planar elements are positioned inside and project into the cavity to accomplish the tuning. The planar elements are arranged one above the other at predetermined angular orientations and are also each independently rotatable about one edge.

Abstract: A system for automatically measuring a clearance envelope about a path of travel in a specific embodiment includes a laser and a rotating reflector mounted on a moving vehicle for radially scanning the region around the path of travel in a direction generally perpendicular to the path of travel. A television camera is mounted on the vehicle and is responsive to light from the laser that has been reflected by objects located within the viewing field of the camera. The television camera is radially scanned and provides analog video signals representative of the radial distances between the reflector and the scanned objects. An analog video tape recorder is utilized to record on video tape the distance representative video signals together with binary codes or identification numbers identifying the camera radial scanning information.

Abstract: A colloidal dispersion of hydrous antimony pentoxide particles is made by a process which comprises introducing particles of an oxidizable antimony oxide into a polar organic solvent selected from the group consisting of formamide, methylformamide, dimethyl formamide, acetamide, methylacetamide, dimethylacetamide, dimethyl sulfoxide, formic acid, tetramethyl urea, methanol and ethanol, and contacting said particles with aqueous hydrogen peroxide in the presence of an aliphatic alpha-hydroxy carboxylic acid and a halogen acid selected from the group consisting of hydrogen chloride and hydrogen bromide, at a temperature of from about 0.degree. C to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of said particles to colloidal particles of hydrous antimony pentoxide.

Abstract: A manually operated blow gun for cleaning work pieces by use of compressed air which includes a back pressure sensitive control that is effective when the gun is dead ended with the trigger depressed. The gun has a trigger operated valve which causes actuation of a main output valve, wherein when back pressure is increased, the pressure is directed via a by-pass conduit to close the main output valve against the action of the trigger operated valve.

Abstract: A colloidal dispersion of hydrous antimony pentoxide particles is made by a process which comprises introducing particles of an oxidizable antimony oxide into an aliphatic polyhydroxy alcohol having vicinal hydroxyl groups and contacting said particles with aqueous hydrogen peroxide at a temperature of from about 0.degree. C to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of said particles to colloidal particles of hydrous antimony pentoxide.

Abstract: A double-sigmoid connector is used to interconnect structural members in a trusswork and comprises a pair of arcuate elbows joined to each other at their outer peripheral midsections. Coaxial outlets are formed in the elbows at their inner peripheral midsections.

Abstract: In a double-sigmoid connector, as used to interconnect structural members in a trusswork and comprises a pair of arcuate elbows joined to each other at their outer peripheral midsections, coaxial outlets are formed in the elbows at their inner peripheral midsections. Accordingly, lateral interconnections may be made.

Abstract: In a double-sigmoid connector, as used to interconnect structural members in a trusswork and comprises a pair of arcuate elbows joined to each other at their outer peripheral midsections, a pipe extends through an opening in the outer peripheral midsection of each elbow and is joined to each elbow so as to join the elbow to each other.

Abstract: A railway bolster is provided wherein the bolster bowl and king bolt openings have liners of low alloy or carbon steel backed by a weld metal deposit with a hardness of from about 25 to 40 Rockwell C the weld metal forming the wear element.

Abstract: A tray for use in an electromagnetic oven supplying differing quantities of electromagnetic energy to a variety of load items which are located within the oven cavity. A food or material bearing tray inserted into the oven positions a conductive energy shield to interfit with elements on the tray to isolate selected items from the electromagnetic energy. The conductive shield cooperates with a shaped interior wall of the oven to provide a desired non-uniform distribution of electromagnetic energy over those regions of the tray which are not shielded. An improved sensor assembly located on the tray controls an assembly in the oven to inhibit and terminate the heat cycle as desired. The tray further includes conductive base strips with upstanding flange members defining the shielded region with the base strips recessed into the surface of the tray to prevent energy from entering into this shielded area.

Abstract: A method and apparatus for inspecting the location and orientation of a sensor assembly in a tray-sensor arrangement adapted to be placed in a microwave oven. The sensor assembly which includes a ferromagnetic element that absorbs energy when placed in the oven and changes its characteristics when a predetermined amount of energy has been absorbed, is tested in the completely assembled tray by accurately positioning the tray in predetermined relation to an oscillating circuit whose operating frequency is responsive to the presence of the ferromagnetic sensing element. The output frequency of the oscillating circuit indicates whether or not the sensor assembly has been properly assembled and positioned on the tray. The oscillator circuit includes a frequency determining element which produces a distinctly different frequency when the sensor is not properly positioned in the assembly or is omitted from the assembly.

Abstract: Sulfonylarylhydrazides are used as latent catalysts for condensation reactions, particularly in the curing of solventless heat-setting printing ink compositions.

Abstract: An apparatus for mixing or blending, and discharging ground meat or the like. The apparatus includes a tub having a pair of spaced, agitator mounted, shafts which shafts are mounted therein for counter-rotation, with the agitators over-lapping, to mix and continuously circulate the meat and also to rapidly discharge same through a movable door when desired. Agitators are fixedly and specifically positioned on the shafts to achieve the desired objectives depending only upon the position of the discharge door for each function.

Abstract: A novel method in accordance with the present invention comprises the formation of compacted pellets of solid phase carbon dioxide from liquid phase carbon dioxide to form snow, compressing said snow to force the same through an extrusion passageway forming elongated, rod-like extrusions of compacted solid phase carbon dioxide and exerting back pressure against the rod-like extrusion as they leave the passageways thereby stabilizing the extrusions permitting the escape of gas without fracturing the same.

Abstract: A humidifier system for delivering breathing gases such as air or oxygen from a respirator, anesthesia machine, oxygen source, or the like to a patient under controlled conditions of temperature and humidity is disclosed. The humidifier comprises a support housing adapted to receive a removable water tank, the housing also containing a low water sensing system, a water heating means, and a system for sensing and for regulating the temperature of the water in the tank. The tank includes an air inlet leading to a diffuser chamber, from which air flows through a diffuser plate, through the water in the humidifier, and thence to an outlet for delivery to the patient. The breathing gases are forced through the water tank under positive pressure and thereby are heated and humidified prior to delivery.

Abstract: In a process and apparatus for the mechanical separation of a combination of meats and bone the material is conveyed by a feed screw through a conduit having at least a part of its wall formed as a separator screen. The screw moves the material between its lands in a manner such that it is pressed radially outwards against the screen with a minimization of shear along the screen. The screen is constituted by a plurality of closely spaced plates which flex under the effect of the outwardly operative pressure to facilitate passage of the meat fraction therethrough while retaining the boney fraction on the inner wall.

Abstract: A colloidal dispersion of hydrous antimony pentoxide particles is made by a process which comprises introducing particles of antimony trioxide into a polar organic solvent selected from the group consisting of formamide, methylformamide, dimethyl formamide, acetamide, methylacetamide, dimethylacetamide, dimethyl sulfoxide, formic acid, tetramethyl urea, methanol and ethanol, and contacting said particles with aqueous hydrogen peroxide in the presence of an aliphatic alpha-hydroxy carboxylic acid and a halogen acid selected from the group consisting of hydrogen chloride, hydrogen bromide, and hydrogen iodide at a temperature of from about 0.degree. C to about the decomposition temperature of the reaction mixture for a length of time sufficient to convert at least a portion of the antimony particles to colloidal particles of hydrous antimony pentoxide.

Abstract: A seal is disclosed for a shaft journalled to rotate within a sleeve. The seal comprises annular members mounted between the shaft and the sleeve for relative movement along an axis common to the shaft and the sleeve. The members are biased into sealing engagement with each other and are separable by fluid pressure for relative rotation of the shaft and the sleeve with no surface-to-surface wear of the seal.