Abstract: A propulsion unit for vessels has rotatably interconnected upper and lower housing portions, the upper portion being arranged to extend horizontally through the hull and permit rotation of the unit in a vertical plane for access to the lower portion. The lower portion is independently rotatable through 360.degree. to provide steering and reverse functions and includes a screw propeller positioned for rotation in a horizontal plane enclosed by fluid inlet and outlet ducts, a shallow depth inlet duct being the only projection below the hull bottom line. The unit is designed to provide normal propulsion for slow and medium speed boats and jet propulsion for light, high speed planing craft.

Abstract: A differential pressure indicator including a remote sensing means is disclosed wherein a reference volume under predetermined pressure is employed as a standard, triggering an indicating mechanism when a second (measured) pressure falls above or below a predetermined threshold. The indicating mechanism may include a novel shaft which protrudes through the casing carrying thereon a source of radioactive material which is remotely monitored. Alternatively, the protrusion may be sensed as an impedance variation or additional visual indicator. In one embodiment, a plurality of the subject sensors are housed upon the blades of a helicopter. Upon sensing the changing pressure in the helicopter blade, the protruding element provides a radioactive source which is sensed in a conventional manner to provide a cockpit readout.

Abstract: Following conventional pretreatment and background dyeing and washing of a carpet web, an applicator means applies a thick viscous gum coating to the pile face of the web, forming a temporary barrier thereon. Conveyor means is provided to transport the coated carpet web horizontally through a liquid dye dripping or splattering station where multiple interrupted syrupy dye streams fall on the temporary barrier and form thereon dye pools and rivulets of irregular shape, size and spacing. The conveyor means continues to transport the carpet web with the barrier coating and dye thereon horizontally into a steamer where the barrier layer dissolves and settles into the carpet pile with the dye to establish a random irregular color pattern. Fixing of the dye also takes place in the steamer. The apparatus has final washing and drying means of a conventional character beyond the steamer. Pin driving rolls for the carpet web are electrically coordinated to maintain a regulated tension on the web at all times.

Abstract: A metal coating is deposited upon the surface of a number of electronic circuit device wafers in an evacuated chamber by means of tooling that rotates the wafers about three different axes. A primary three-armed spider rotates about a primary axis and carries on each of its arms a four-armed secondary spider holding a wafer on each of its arms. Four of such primary spiders together with the secondary spiders mounted thereon are carried respectively by four upright standards that rotate in unison about a vertical axis of a cloud of metal vapor filling the chamber. Rotation of the standards causes rotation of the primary spiders relative to the standards and also rotation of each secondary spider relative to its primary spider. The arrangement causes each wafer to sweep up and down along outer portions of the metal vapor cloud as it rotates about the vertical axis of the cloud and also causes each wafer to rotate about its own axis several times for each up and down sweep.

Abstract: An apparatus for applying a soldering paste to discrete spots on components prior to soldering from a bath of soldering paste comprises at least one metering plunger. The plunger is attached to a vertically reciprocable slide and adapted to dip into the soldering paste during a first descent. The entrained amount of soldering paste is then transferred to the required spots on the component or components located in the path of a second descent.

Abstract: A protective coating applicator tool for application of coating material to the interior of well casing.

Abstract: The rotary disk that mechanically provides radial acceleration to the particles of the coating powder as they enter the electrostatic field of the apparatus is provided with a grid or screen of fine wires on its upper side near its outer edge to break up agglomerates of the coating material that may be present in the powder when it reaches the neighborhood of the disk.

Abstract: A system for managing milking-cows in stanchion stool for milking by which a cow is situated on a floor with her body being fixed in a standing position by supporting members and her neck being restricted in vertical movement by means of stoppers, with teatcups rising on the floor between the cow legs and fitted to her teats. The teatcups are individually set in predetermined positions, according to the peculiar teat positions of the cow.

Abstract: An element used in determining the conductivity of fluids. An insulating tube is provided for carrying the fluid to be measured. Cylindrical electrodes surround the tube at laterally spaced positions. When a signal is applied to the electrodes, the tube and fluid act as dielectric in a capacitor. Measurement of the amount of current passed by the capacitor provides an indication of the conductivity of the fluid. Means is provided to minimize the effect of stray currents.

Abstract: The invention pertains to a rotary machine embodying as major elements a dual rotor consisting of two rotor halves rotating in a circular housing and an oscillator comprised of a cascade of elliptical gears. The periphery of the housing is adapted, with respect to intake, outlet and other necessary means, to suit the purpose for which the machine is intended. The dual rotor has an even number of vanes shaped to best suit the purpose of the machine. Half of the vanes are located on each rotor half in such a manner as to be able to rotate with the rotor halves in the circular housing and to oscillate with respect to each other creating working chambers of varying volume while rotating in the same direction. The oscillations are imposed by the oscillator which includes an input-output shaft integrated with a pair of elliptical gears in the center of the cascade. The space between the dual rotor and the housing and between the respective rotor parts is sealed by a suitable sealing system.

Abstract: A fuel control system having an auxiliary circuit for correcting the signals generated by a pressure sensor under transient operating conditions is disclosed. The circuit generates a pressure correction signal directly proportional to the first time derivative of the intake manifold pressure and inversely proportional to rotational speed of the engine which is added to the signal generated by the pressure sensor. The added signals are utilized by the electronic control unit for computing the fuel requirements of the engine to maintain a constant fuel/air ratio during steady state and transient operating conditions.

Abstract: A reciprocating piston engine in which oil cooling is provided by a hollow oil jet assembly located accurately by a location tool and pressed into position in a bore in the crankcase of the engine. Accurately drilled and aligned jet passages are formed in the assembly which is then fitted into position with good accuracy to enable accurate direction of a jet or jets of cooling oil to a desired point or points on the underside of a piston.

Abstract: A rotary internal combustion engine comprising a cylindrical housing with end walls, a rotating cylinder block therein having seals mounted on the outer arcuate surface of the rotating cylindrical block as well as the end surfaces thereof to provide a tight seal with the inner walls of the housing. A plurality of radially extending cylinders are provided in the rotating block, each including a piston. Connecting rods are eccentrically mounted on a single throw or single connecting pin of a crank shaft. The cylinders are offset about one-half inch axially of the crank shaft so that they reciprocate in substantially the same plane. Different sun gear arrangements are provided to enable rotation of the rotating block either in the same direction or in an opposite direction relative to the crank shaft to obtain different ratios and different numbers of power strokes per revolution of the cylindrical bloc. Either two pistons 180.degree. apart or three pistons 120.degree. apart are provided.

Abstract: An accelerator control linkage for the engine of a vehicle which maintains a maximum vacuum in the intake manifold of the engine. The linkage of the accelerator normally allows the throttle to open only when a predetermined vacuum is present in the manifold. This is accomplished by a bellows connected to the intake manifold so that the force of the bellows on the rod is proportional to the degree of vacuum in the manifold, with a tension spring, mounted to the rod to oppose the force of the bellows, in use, to accelerate by opening the throttle when intake vacuum is diminished, requires more force on the part of the foot of the driver, with less pedal force required under conditions of high vacuum to encourage driving the engine under most economical conditions.

Abstract: A device for use in an internal combustion engine for reducing emissions and for improving engine performance and economy having valve means for restricting air flow from the carburetor spark port to the vacuum advance cylinder at moderate acceleration to delay spark retard and for permitting unrestricted air flow at substantially full throttle acceleration to provide normal spark retard.

Abstract: A fuel injection control system for an internal combustion engine comprises at least one auxiliary air supply branched at the engine intake pipe downstream of the air-fuel metering system, and at least one valve controlling the auxiliary air supply. The valve is controlled by a diaphragm with a return-spring membrane subjected to a partial vacuum from any suitable source which is modulated on one hand by at least one variable throttle or choke responsive to the air flow in the metering system and, on the other hand, by an electronic valve controlled by a probe responsive to the composition of burnt gases in the exhaust manifold.

Abstract: An exhaust gas cleaning apparatus for an internal combustion engine for a vehicle having a carburetor including an air bleed system to bleed air into a fuel line of said carburetor, and having an exhaust gas recirculation valve including a diaphragm mechanism which is controlled by negative pressure in said carburetor to recirculate a part of said exhaust gas from the exhaust manifold to the intake manifold.The apparatus comprises another air bleed system to bleed air to the fuel line of the carburetor and valve means for communicating said other air bleed system and said diaphragm mechanism of the exhaust gas recirculation valve with the atmosphere in response to negative pressure in the venturi of said carburetor and in the intake manifold.

Abstract: Apparatus for heating an intake manifold in an internal combustion engine comprising a heating chamber for heating an intake manifold, arranged below a riser portion of the latter and communicated with the inside of an exhaust reactor; a by-pass for the exhaust gas provided in the reactor, the upstream end thereof opening into said heating chamber and the downstream end opening into a passage connecting the inside of the reactor to an exhaust pipe; and control valve means provided in said passage adjacent to the downstream end of the by-pass to alternatively divert the flow route of the exhaust gas.

Abstract: A self-contained device for preheating or maintaining a predetermined heat in an internal combustion engine. The device includes a so-called infrared burner that is adapted to be positioned in heat exchanging relationship with a portion of the engine, a fuel source for the burner, and an ignition source for igniting the burner. The ignition source is adapted to be suitably powered, for example, by the battery of the associated engine.

Abstract: A device for preventing an overrunning operation of an internal combustion engine, provided in a capacitor discharge type ignition system comprising a magneto generator including an ignition power coil and at least one loading coil and an ignition circuit including a capacitor arranged to be charged from said ignition power coil of said magneto generator, an ignition coil and a discharging thyristor so arranged that energy from said capacitor is discharged through the primary side of said ignition coil when said discharging thyristor is triggered in time with said internal combustion engine, said device comprising an ignition failing thyristor provided so as to shunt said discharging thyristor whereby a discharge current from said capacitor is prevented from flowing through said ignition coil and also means to prevent a hysteresis on repetition of failure and success to ignite said engine. The ignition failing thyristor is adapted to be triggered by a voltage responsive to the revolution number of the engine.

Abstract: An internal combustion engine having a rotary valve for controlling the inlet of fuel and exhaust of combustion products from the engine arranged to supply copious lubrication to the valve face and to remove excess lubricant before the valve registers with the combustion chamber inlet to leave a lubricant film of thickness not exceeding 40 to 50.mu. inches, the lubricant flowing through a series of concentric sealing rings, or a spiral groove in the valve housing or the valve surrounding the area of register of the valve opening into the combustion chamber.

Abstract: This circulating fireplace system preferably includes a fireplace comprising three metallic shells having air spaces between them for cooling purposes, together with a thermosiphonic chimney having three concentric tubular members coupled to the respective shells of the fireplace. Means is provided for impelling cooling air downward between the outer tubular members of the thermosiphonic chimney in addition to the air which would flow there by virtue of the thermosiphonic effect. Part of the air impelled down the chimney is used to cool the fireplace and then flows upward through the chimney to supplement the flue-cooling effect of the thermosiphonic air flow. The remainder of the impelled air is released from the fireplace either directly to the room or through ductwork in order to heat the room where the fireplace is located, or other rooms of the same structure.

Abstract: A forced-air heating fireplace grate comprises inlet- and exhaust-manifold ducts extending from the front to the rear of a fireplace and cross ducts extending between the inlet- and exhaust-manifold ducts across the fireplace. Cool air introduced into an outer end of the inlet-manifold duct, passes through the cross ducts to the exhaust-manifold duct and exits from the fireplace at an outer end of the exhaust-manifold duct. The inlet- and exhaust-manifold ducts, and the cross ducts are spaced to form hot-ash retaining spaces therebetween. Longitudinally extending grilles extend across the bottoms of the hot-ash retaining spaces to retain hot ashes therein. The fireplace grate is unobstructed across the top thereof so that logs of greater width than the grate can be placed upon the grate and includes an angled, vertical support in the front thereof to prevent logs from rolling off the front of the grate.

Abstract: A shield adapted for use in conjunction with a fireplace having a front opening. The shield comprises a front panel, a pair of side panels disposed respectively at the ends of the front panel and extending generally transverse to the front panel, and the lower portion of the front panel being spaced from the opening of the fireplace a greater distance than the upper portion of the front panel when the shield is disposed adjacent the opening.

Abstract: A heat storage tank is mounted in a pit in the ground. The pit preferably has four sides and a bottom. A lining of insulating material mounted against the sides of said pit. A water impervious liner tank is mounted against the insulation. A top rests on the contents of the tank. At least one insulating barrier extends down from said top to a point adjacent the bottom of said tank, the barrier dividing said tank into portions. Heat storage material substantially fills the tank. The heat storage material has sufficient voids to permit circulation of heat transfer liquid. A hot liquid intake pipe extends adjacent to the bottom of the tank in the center portion. A cool liquid out-take pipe extends adjacent to the bottom of said tank in a side portion. A heat exchanger is located in the upper center portion of the tank.

Abstract: In the system for accumulation of heat from solar radiant energy wherein the solar radiant energy is absorbed by heat-absorption means and transferred therefrom to a heat-transfer medium thereby to elevate the temperature of said heat-transfer medium an improvement is attained by using a plurality of heat-absorption members and arranging them in a series connection. These heat-absorption members are individually provided with selectively penetrating membranes capable of reflecting electromagnetic wave energies of the specific magnitudes of heat corresponding to the respective degrees of temperature of the heat-transfer medium. Since the heat-transfer medium is thus divided into a few different stages, the system disclosed herein permits highly efficient accumulation of high-temperature heat energies.

Abstract: Herein is disclosed a flat plate solar heat collector unit. The solar collector is integrated as a structural unit so that the collector also functions as the building roof. The functions of efficient heat collection, liquid coolant flow passages, roof structural support and building insulation are combined into one unit.

Abstract: A solar heating system of the closed type comprises a solar collector, a water storage tank, and water lines therebetween. The solar collector preferably comprises a continuous length of tubing coiled in a helical array of closely adjacent turns, having a water inlet communicating with the outermost turn and a water outlet communicating with the innermost turn. Comparatively cold water is taken from a water outlet adjacent the bottom of the storage tank and is pumped through a line to the water inlet of the solar collector, and heated water is supplied from the solar collector water outlet, together with cold water from an external supply, to a common inlet adjacent the top of the storage tank. The water line between the solar collector water outlet and the tank water inlet includes a U-shaped section disposed external of the tank and having legs at least equal to the height of the tank, to provide a heat trap which minimizes the loss of heat from the tank.

Abstract: Inlet air for a water heater used in a trailer home or camper is provided through an air tube passing through the floor of the camper to the heater within the camper. The lower end of the air tube terminates short of the ground beneath the camper and includes a cup assembly arranged to rotate about the axis of the air tube. The cup assembly has a front opening and a rear rudder. Wind blowing under the trailer home or camper will orient the cup assembly so that the front opening faces the wind so that the inlet air is passed up through the air tube. Excess air can pass out a rear opening in the cup assembly.

Abstract: A food warmer and humidifier comprising a double walled container forming a water jacket in which water is heated. The water jacket has a primary vent which may have a variable orifice to vent the major portion of the steam and water vapor generated. A small orifice or steam port opens from the water jacket into the inner chamber in which the food is placed, to admit a controlled amount of steam for warming and humidifying the food. A lid with controllable vents releases excess steam to prevent internal condensation. In one form the position of the steam port can be varied relative to the primary vent to control the pressure ratio and thus the amount of steam admitted to the inner chamber.

Abstract: A bone biopsy instrument kit includes a hollow body having a socketed forward end to receive one of several hollow, disposable needles. A chuck holds a needle in place on the body, and the rear end of the body has a recess for receiving a bushing into which a stylet is threaded for extending through the body and the needle as desired. The stylet serves as an obturator closing the needle for passing through soft tissue to the bone, then the body is used to drive the needle into the bone to a depth that can be checked by reinserting the obturator. The removed specimen material is set inside the disposable needle, and then another stylet with a blunt end is used to extrude the specimen from the needle for diagnosis.

Abstract: A method of monitoring the concentration of a given volatile organic compound, or of urea, or both, which compound(s) is commonly found in vaginal secretions is described as providing a reliable diagnostic indication of ovulation, and more particularly is described as providing a simple home-test method of predicting the onset of the fertile period, thereby increasing the reliability of the "rhythm method" of birth control.

Abstract: A sphygmomanometer in which the gauge in addition to indicating the extent of the systolic and diastolic pressures also indicates when these pressures occur directly adjacent the gauge pressure hand without the use of any stethoscope or electronic medium.

Abstract: A speculum for examining body cavities comprises two angle pieces, each having a generally U-shaped cross-section along substantially its whole length, and consequently troughed-like legs, both angle pieces with their troughs facing each other being removably connectable to each other with side portions thereof on either side of the speculum overlapping each other to form a pivot portion from which the four legs extend, respective legs of the angle pieces being movable together or apart by means of one pair of legs comprised of a leg of each angle piece, serving as handles for operating the other pair, and characterized in that both angle pieces are identically alike and that in the area of the pivot portion, each has on one side a pin and on the opposite side a hole, the hole in each angle piece being made to accommodate the pin of the opposing angle piece.

Abstract: A surgical retractor for use in certain types of deep abdominal surgery wherein it is necessary to remove the intestines from the abdominal cavity, includes an extension releasably secured to a frame and having a retractor arm carried by the extension in an elevated position relative to the frame, to thereby provide space for the intestines draped over the frame, and a retractor blade carried by the arm and engaged with the intestines to retain them out of the abdominal cavity.

Abstract: An electron therapy device for the treatment of various ailments of the human body has a vibrator including a source of heat and an electrical circuit which supplies electrons to the skin of the human body by means of rollers which contact the skin so as to overcome a deficiency of electrons in the body and help maintain a state of equilibrium of electron current within the body.

Abstract: A foot massager which has a frame which supports a number of rods removably secured thereto. The rods are parallel to each other and lie in the same plane. The plane is tilted slightly so that it is sloped and not parallel with the floor below. Each rod has a plurality of uniformly sized beads thereupon whose diameters are slightly larger than the diameter of any rod, enabling them to spin or rotate around the rods. The user places his feet on the beads and moves them up and down along the slanted plane causing the beads to rotate as they contact the user's feet, thus massaging and stimulating the nerve endings, muscles, and blood vessels located in the sole of each foot.

Abstract: A harness device having a pair of heel-foot slings with heel straps attached by leg straps to rings connected to shoulder-chest straps for maintaining flexion of a person's hips and knees and traction of the low neck-upper back area.

Abstract: The splint has two modes of adjustment, flexible and rigid. It consists of a plurality of similar pads strung on a flexible wire. Friction elements are provided between pads. A take-up screw is provided at one end of the wire and a take-up eccentric at the other, permitting the friction elements to be adjusted to any desired degree of low friction between pads, or adjusted to such high friction as to lock the pads together. In another embodiment both the take-up screw and the take-up eccentric are at the same end of the flexible splint.

Abstract: The inhalation tube of a pressure regulator is divided by means of a baffle curved at its inner end adjacent the side wall of the chamber so that when the regulator is in the water with the mouthpiece open, water is channeled into the regulator chamber through the inhalation tube along one side of the baffle and air flows out through the tube along the other side of the baffle.

Abstract: A method of needleless medicant injection with an ampule having a medicant chamber and a bore extending therefrom dimensioned for needleless injection which includes the steps of evacuating the medicant chamber such that it is at less than ambient pressure, sealing the chamber from ambient pressure, thereafter exposing the chamber to a contained medicant to permit transfer of the medicant into the chamber, and then exposing the medicant in the chamber to a higher than ambient pressure to force it through the bore.

Abstract: A breathing air humidifier for respirator devices comprising an inspiration conduit which is connected to the mouth of the user of the respirator and which has a section or portion with a foil surface of a material which is impervious to water but pervious to water vapor. A water chamber surrounds the foil surface and water which is warmed is delivered to the water chamber from a supply tank located above the chamber which carries a heater for warming the water to a preselected temperature.

Abstract: Perivascular infiltration of liquid being administered to a patient is detected by the method of altering the temperature of a region of the patient's skin adjacent the site of a transcutaneous puncture and providing an output indicative of the difference between the altered skin temperature and the temperature of the infiltrated liquid.

Abstract: A parenteral fluid administration set comprising a container having therein a supply of a fluid to be administered intravenously and being characterized by a floating siphon operative to flow fluid from said container supply thereof at a predetermined rate of flow, said floating siphon comprising a float and at least one siphon U-tube whose shorter leg extends through and is affixed to the float and whose longer leg terminates below the inlet end of said shorter leg and a substantial distance above the container bottom, said longer leg opening to and flowing fluid into an axially non-rigid fluid-flow tube extending through the body of the fluid in said container and delivering same through the container bottom to an I.V.

Abstract: An inserter for delivering soft, deformable tampons into body cavities and the combination of the inserter with a suitable tampon. The inserter is particularly useful with tampons made of resiliently deformable material, such as polyurethane sponge. The inserter is made up of a pair of telescoping elements. The outer element is in the form of a tube. The inner element may also be in the form of a tube and has a main portion slidably disposed within the outer tube and a front portion comprising a smaller diameter frontal extension axially disposed on the forward end of the main portion and having a length substantially as long as the outer element when the inner element is slidably disposed therein.In the inserter and tampon combination, the tampon is disposed within the outer tube to provide a forward head portion and a trailing skirt-like portion with at least the skirt-like portion being deformed and held in releasable compression between the frontal extension and the outer tube.

Abstract: A disposable absorbent bandage such as a diaper has a nonwoven fibrous facing layer which includes side portions flanking a median portion, at least the side portions thereof being impregnated with a volatile liquid containing a binder to secure the interfiber connections to maintain the fiber superstructure and at least the side portions being heated to explosively puff at least the side portions of the web into a gossamer web in which the side portions have a density less than about 0.02 gm./cm..sup.3, and in which the median portion has a density of at least 0.04 gm./cm..sup.3. The differential in fiber densities between the median portion and the side portion results in substantially greater wickability in the median portion than in the side portions and reduces the tendency for leakage at the sides of the diaper.

Abstract: A disposable diaper is provided with adhesive tab fasteners having an adhesive coating on substantially all of one face thereof. The tabs have side edges, a fixed end secured to the diaper, and a free working end which includes a distal end portion and an adjacent central portion. A plurality of elongated spacer means are adhered to the adhesive-coated surface and define expoded adhesive regions therebetween. The distal end portion is folded over onto the central portion, with the spacer means being positioned so that the spacer means on the distal end portion bridge the spacer means on the central portion and vice versa, and are in limited adhesive contact with a juxtaposed region of the adhesive coated surface at a plurality of attachment points between the points of bridging by juxtaposed spacer means.

Abstract: A disposable diaper having a facing sheet defining a diaper inside surface for direction toward an infant and a backing sheet defining a diaper outside surface is provided with adhesive tabs having a fixed end and a free end. The fixed end has an adhesive coating on one face thereof for permanently attaching the fixed end of the tab to a marginal portion of the diaper outside surface. The fixed end is divided lengthwise to define anchoring legs which are contiguous at a location spaced inwardly from the terminal edge of the fixed end and are diverging with respect to one another to a spaced-apart position at the terminal edge of the fixed end for facilitating in distributing stresses imposed on the tape segment. The free end has an adhesive coating on one face thereof, and release means is releasably attached to the adhesive coating on the free end of the tab. The free end is separable from the release means to make the free end available for use in securing the diaper about an infant.

Abstract: A flexible catheter apparatus is adapted to be positioned in a patient for use in cardiac pacing, with a first electrode positioned within the heart, and a second one positioned outside the heart. In the preferred embodiment, the first electrode includes a plurality of spaced apart conducting bands located within about 2 cm of the end of the catheter. The bands are electrically connected and are two or more in number, with one such band located at about the distal end of the catheter, and at least another located about 1.0 cm from the distal end.

Abstract: A surgical electrode consisting of an insulated stainless steel wire having needles conductively affixed at one or both ends, at least one needle having a blunt end with a straight shank and having a weakened zone between the straight shank end and the opposite pointed end of the needle whereby the pointed end may be snapped off and the straight shank used as an electrical jack for connection to a pacemaker or similar electric current generating or monitoring device. The electrodes are particularly useful as temporary heart pacer electrodes for cardiac stimulation during and after surgical operations.