Abstract: Structural connector for tubular members used in trusses and the like comprises a one-piece forged element comprising at least a portion of a tubular primary member with a longitudinal central axis and a pair of first and second tubular secondary members integrally connected to one side of the principal member. The secondary members have longitudinal central axes coplanar with the axis of said portion of said primary member and the axes of the secondary members intersect each other at a point displaced to the same side of the axis of the primary member where the secondary members intersect one another.

Abstract: A method of constructing a double-sigmoid connector from a pair of arcuate elbows comprising the steps of: forming an outlet in a portion of the outer periphery of each of the elbows, said outlet having an annular wall extending outwardly of the outer periphery of each elbow, and welding the outlet walls together.

Abstract: A press for straightening a railroad rail formed by the welding of the ends of two rail sections together. The press has a first reciprocatable cage having two opposed rams straddling the rail for straightening the rail in one plane and a second reciprocatable cage having similarly arranged rams extending into the first cage for straightening the rail in a second plane. The cages are connected to suitable power means located remote from the tending side of the press for efficient operation of same.

Abstract: A method facilitating the rapid and objective classification and/or identification of an unknown biological specimen is disclosed. A physical sample of the specimen is controllably heated in accordance with a predetermined nonisothermal time dependent function causing the sample to undergo controlled thermal degradation and give off a characteristic time dependent sequence or evolution pattern of gaseous degradation components (molecular fragments). This sequence of gaseous degradation components is then directly passed into an ionization source and ionized to provide a respectively corresponding time dependent sequence of characteristic ions. These ions are then analyzed in a mass spectrometer and measured data is recorded representing the respective quantities of ions having particular masses being produced as a function of time or temperature.

Abstract: A fire extinguishing system that is of the gas dispersion type is provided, whereby a given supply cylinder, controlled by a cylinder valve, is piped to a plurality of directional or line valves for delivery to various locations. Sensing devices are also provided for controlling the line valves and cylinder valves as are manual valve operators. A particularly novel cylinder valve is provided, whereby once the valve is opened, venting of one side of the piston prevents closing prior to discharge of fluid from the cylinder.

Abstract: In a connector, as used to interconnect structural members in a trusswork, an elbow and a pipe, which may be another elbow, are provided with suitable slots receiving a plate, and the elbow, pipe, and plate are welded together.

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.