Abstract: A rocker type electric switch operated by pressure on a knob which actuates a spring biased plunger that exerts a switch closing force on a movable switch contact element, in combination with means for preventing said plunger from forcing said element to the switch closed position until the knob and plunger have been rotated through a predetermined angle to a preselected position.

Abstract: A mass-rate flowmeter of the recirculation type wherein the recirculating flow is created by a ram type centrifugal pump having a substantially constant volume flow discharge rate over the operating pressure range of said mass-rate flowmeter.

Abstract: An adapter kit for converting a battery powered motorcycle ignition system to a magneto ignition system comprising a drive mechanism adapted to be mounted in the tachometer drive take-off port of a motorcycle for driving a magneto by the gear provided for driving the motorcycle tachometer.

Abstract: A mass-rate flowmeter of the recirculation type wherein the recirculating flow is created by a ram type centrifugal pump having a substantially constant volume flow discharge rate over the operating pressure range of said mass-rate flowmeter.

Abstract: A fast-freeze system comprises an insulating housing for a product conveyor of the vertical helix or spiral-type wherein the upper and lower loops (or tiers) respectively, of the helix discharge or receive the product, as the case may be, at product openings (or ports) in the housing; a multiple-spray nozzle array on a header receives a regulated supply of liquid nitrogen according to a preset freezing temperature through a modulating servo-valve control; the header subtends a restricted sector only of an upper conveyor tier for producing heat transfer by direct liquid nitrogen-to-product contact to establish a single very cold zone substantially in advance of the discharge port, and the exhaust nitrogen vapor is discharged by blower action through the product entrance port.

Abstract: An improved scrubber tower is provided for removing pollutants from hot, corrosive off-gases from chemical processes, such as processes for the production of titanium dioxide pigments. The tower is formed from wood strip baffles treated with fire resistant chemicals arranged in alternate layers extending perpendicularly to each other and secured with titanium fasteners and enclosed in fiber glass walls, the flow passages through the tower being of large cross sectional area relative to the cubic feet of off-gas scrubbed per unit of time as to maintain a relatively low off-gas velocity upwardly through the tower, substantially the same as the velocity that would be present under natural draft conditions, and at low pressures, only slightly above ambient air pressure.

Abstract: Each sheet-form layer of plastic film to be superposed with another layer between layers of non-heat conducting material, such as paperboard, is perforated in a pattern such that, when the layers of plastic are superposed between the layers of normally non-heat conducting material for heat sealing, the perforations of each layer of plastic are aligned with imperforated portions of the superposed perforated layer of plastic. When sealing heat and pressure are applied to the superposed layers of plastic and paperboard or the like by conventional heated dies, each layer of plastic is rapidly sealed to the inner surface of both layers of paperboard, or, if initially sealed to the inner surface of one layer, is rapidly sealed directly to the inner surface of the other layer of paperboard.

Abstract: Anesthetic vaporizer of the flow-through type having a calibrated flow control valve unit for proportional distribution of the inlet gas between a vaporizing chamber and a main bypass passage to obtain a desired anesthetic concentration. A rotary, multiple-port valve with a multiplicity of laminar flow-type passages in parallel is operable in discrete steps for adding the anesthetic vapor from the chamber in predictable increments to a preset flow of the inlet gas for proportional gas division. An auxiliary gas bypass for temperature compensation has a cone-type valve with restricted opening controlled by a temperature responsive motor in the vaporizing chamber. A wick assembly in the anesthetic vaporizing chamber guides the chamber gas through a multiplicity of parallel passages formed by stacked sheets of absorbent and corrugated materials respectively, to obtain maximum vaporization of the anesthetic.

Abstract: A method of installing decals on vertically ribbed trailer bodies in which a decal having a self adhesive surface is first affixed as a flat or planar, undistorted sheet to the outer flat surfaces of the ribs on the trailer body so that the decal contacts only the outer surfaces of the ribs and is spaced from the outer surface of the trailer body at the locations between the ribs, slitting the decal vertically along a line spaced longitudinally from an outside corner of one of said ribs, similarly slitting said decal along a line spaced from an outside corner of a rib adjacent said first named rib to provide an intermediate decal portion which is cut off from the rib portions of the decal affixed to the ribs and which is of a length corresponding to the distance between the flanges of the two adjacent ribs, and affixing the cut off intermediate portion of the decal to the outer surface of the trailer body intermediate said ribs and the rib portions of the decal to the outer and side walls of each rib, leaving

Abstract: A process for the industrial production of ethylene oxide and an aromatic acid by reacting oxygen with ethylene and a methyl aromatic compound in the liquid phase. Oxygen and ethylene are passed into a liquid mono or poly methyl aromatic compound and reacted therein to produce ethylene oxide and methyl aromatic oxidates. The aromatic oxidates are then further oxidized to produce aromatic acids. When the methyl aromatic compound used is toluene the acid produced is benzoic acid, from p-xylene, terephthalic acid is produced; from m-xylene isophthalic acid is produced; and from pseudocumene (1, 2, 4 trimethyl benzene) trimellitic acid is produced.

Abstract: A bridge for a stringed instrument, preferably a violin, is disclosed for the purpose of enhancing the volume and tone quality of the instrument. The bridge is made from wood and has an upper generally oval body portion which is supported by the lower inverted V-shaped leg section. The body portion includes four slits through its width, associated with the strings as described in detail in the specification. The leg portion includes two slits aligned to form another inverted V-shape conforming to the shape of the leg portion. The leg portion may also have holes drilled into it for the purpose of removing material to reduce the overall weight of the bridge. Several preferred contours are disclosed for the body portion, one of which may be selected for use with different stringed instruments.

Abstract: An engine, pump or motor is disclosed of a type generally similar to the "Wankel" engine, except that the present invention is characterized by purely orbital motion of the piston to produce rotation of the output shaft. Preferably the shaft has two eccentric sections in radial alignment, the first eccentric axis being displaced from the main axis, one half the displacement of the second eccentric axis from the main axis. A pinion is rotatably mounted about the first eccentric axis. A fixed internal ring gear is fixed against rotation and mounted about the main axis so as to engage the pinion at a point in radial alignment with the two eccentric axes. An orbital ring gear is preferably identical to the fixed ring gear and rotatably mounted about the second eccentric axis so as to engage the pinion at a point on the pinion diametrically opposite the point of engagement of the pinion and the fixed ring gear. The piston is also rotatably mounted about the second eccentric axis and fixed to the orbital ring gear.

Abstract: An automatic switchover valve is described having a unique venting system whereby any areas which may cause a buildup in pressure during shuttling are normally vented to atmosphere. The shuttle is of a simple, easy to manufacture design having a central inwardly tapered portion which allows communication with internal parts of the valve to atmosphere. The valve also features sealing means which seal against moving surfaces without being subjected to rubbing on sharp surfaces or orifices, thus prolonging seal life.

Abstract: A tracheal tube adapted for insertion into the trachea of a patient for introducing or removing gas. The tube includes a main inflatable cuff which surrounds the distal end of the tube. A gas passageway communicates at one end with the interior of the cuff, and the other end of the passageway is adapted to receive an inflating means, for delivering gas to inflate the cuff. The gas passageway includes a check valve, and a generally oval pilot balloon is in gas communication with the cuff via the passageway. The pilot balloon is longitudinally pre-stretched between its opposite end portions by means maintaining the pre-stretched condition. Accordingly the balloon in its non-inflated condition is characterized by a series of mutually spaced folds, extending longitudinally between the opposed ends. The ridges of the folds contrast with the troughs between folds, to provide a series of spaced, visually discernible markings which visually signal the non-inflated condition of the main cuff.

Abstract: An instrument for withdrawing equilibrated blood gases in vivo, which comprises a tubular gas permeable membrane inserted through a cannular into the blood stream. In preferred form, the tubular membrane comprises a continuous conduit in contact with the blood. An inlet supply gas terminal is constructed for connection to a carrier gas source, and an outlet gas terminal, for connection to an appropriate analyzer. In preferred forms of the invention, a heater maintains the equilibrated gases at above normal body temperature as they pass to the analyzer; and a port is provided for drawing blood samples from the area being analyzed without dislodging the catheter.

Abstract: A system for separating, concentrating and storing radioactive krypton and xenon in the off-gases from a boiling water reactor, wherein adsorption and cryogenic distillation are both efficiently used for rapid and positive separation and removal of the radioactive noble gases, and for limiting such gases in circulation in the system to low inventory at all times, and wherein the system is self-regulating to eliminate operator options or attention.

Abstract: An improved method is disclosed for coating substrates, such as turbine engine parts, at high rates by a physical vapor deposition process. The substrate to be coated and a vapor source, such as a metal alloy, heated by an electron beam, are placed in a chamber in which a gas pressure of greater than about 5 mT is maintained. When the source material is evaporated at a very high rate, such as greater than about 0.1 g/s or 13 g/s.m.sup. 2, the vapor is collimated and the collimation increases as the gas pressure or the evaporation rate increases. Collimation of the vapor allows a much higher deposition rate for a given evaporation power. Further, a much higher fraction of the evaporated material is deposited on the substrate. Despite the collimation, evaporated material deposits on areas of the substrate which are not in line-of-sight of the vapor source. If desired a substrate bias can be applied to bombard the substrate with ions before and during coating.

Abstract: Apparatus for providing density compensation to measured volumes of fluid flow wherein means for sensing the fluid parameter having a dominant effect on the density thereof are adapted to produce an output signal which varies as a function of the magnitude of the sensed parameter. This output signal is supplied to a voltage-frequency converter which produces output pulses continually at a frequency corresponding to the magnitude of the output signal. The converter is gated to a coincidence gate for a period of predetermined duration upon detection of each unit change of volumetric fluid flow with the number of pulses accepted by the gate during such period reflecting the value of the dominant parameter and, hence density of the fluid. A frequency divider is configured to divide the gate output by a predetermined factor with each output pulse or count issued by the frequency divider representing a density corrected unit change of volumetric fluid flow.

Abstract: Mechanism for lifting a substrate holder from its carrier platform and rotating the holder during substrate coating, comprises a main assembly including a permanent magnet and concentric stripping ring, an actuating piston for lowering the assembly so that the magnet and stripping ring overlie a magnetic part of the substrate holder, and for raising the assembly with coupled magnet and holder above the carrier, a spring belt transmission for rotating the magnet and holder, an auxiliary actuating piston separately connected to the magnet within the main assembly whereby upon lowering of the main assembly with holder to the carrier platform after substrate rotation, the holder can be stripped from the magnet by independent vertical actuation of the magnet piston relative to the overlying stripping ring.