Abstract: An improved engine shut-down device is provided which includes a pressure responsive modular unit wherein an oil pressure responsive device normally prevents a fuel pressure responsive device from actuating an engine shut-down control. Both the oil pressure device and fuel pressure device include bellows actuators which minimize the possibility of fluid leakage and extend the life of the device.

Abstract: A combustion chamber of an internal combustion engine has the form of a B-shaped chamber which consists of two spheroidal or spherical contiguous chambers which form an inwardly extending projection against which the air and fuel mixture impinges so as to be divided into two swirl flows which sweep residual burned gases of the previous cycle in the combustion chamber, thereby preventing knocking in the operation of the engine to improve the fuel consumption, driving performance and output of the engine.

Abstract: A diesel cycle internal combustion engine has at least one cylinder and a precombustion chamber formed by a cavity in a metal insert in the cylinder head of the engine the precombustion chamber being formed in two coaxial generally cylindrical parts the first part being larger than the second and situated upstream thereof in relation to the flow of fuel through the precombustion chamber from a fuel injector which closes one end; the two parts of the precombustion chamber are joined by a frusto-conical section with rounded regions where it joins the first part of the precombustion chamber, and the second part of the precombustion chamber communicates with a duct which leads to the combustion chamber of the cylinder.

Abstract: An engine speed and loss of oil pressure control arrangement for an engine such as is used in transport refrigeration and is operative at a low speed and a high speed, the arrangement including two axially aligned pistons 12 and 36 into adjacent cylinders 10 and 34, respectively, the first piston 12 moving from an engine off position to a low speed position upon closure of the valve 22 when engine operation is initiated, this forcing the second piston 36 to a low speed position which effects said low speed through leakage 40 to the engine speed control means, the second piston 36 moving further to the right to an engine high speed position upon opening of valve 28 in a conduit leading from the first cylinder to the second cylinder.

Abstract: A hydraulic control mechanism for controlling timing and output as a function of speed and throttle position on a diesel engine fuel injection pump. The hydraulic control mechanism includes two valves and three flow orifices arranged to control governing fluid pressure supplied to the pump so as to provide idle governing and overspeed governing as well as load control in between of the pump.

Abstract: Digital dwell circuitry for a spark and dwell ignition control system is disclosed. Maximum advance and reference sensors are utilized to produce pulse transitions which determine positions of maximum and minimum possible advance for spark ignition with respect to the position of the engine crankshaft. For each maximum advance sensor pulse transition a main counter starts a sequential running count of speed independent clock pulses wherein the maximum count obtained by the counter is related to engine crankshaft speed. The running and maximum counts of the main counter are utilized by dwell circuitry to determine the time prior to the next maximum advance pulse at which spark coil excitation should occur. The main counter running count also determines several inputs to a read only memory (ROM) circuit whose output controls a rate multiplier.

Abstract: An i.c. engine fuel control system includes a closed loop roughness control, utilizing a roughness sensor circuit, an integrator which integrates the error between the roughness signal and a reference signal and modifies the fuel flow to the engine via a main fuel control with a variable frequency clock. During acceleration and deceleration the closed loop is interrupted by means of a circuit including two differentiators which are sensitive to throttle opening (speed demand) and actual speed respectively, and switches controlled by these differentiators.

Abstract: An engine driven fuel injection pump has a cam and pump plungers movable relative to the cam to translate the contour of the cam into a sequence of pumping strokes. A timing control mechanism, used to vary the rotative position of the cam as a function of engine operation, includes a control piston mounted in a cylinder and connected to the cam to control the position thereof whereby to advance and retard the relative timing of the pumping strokes. Movement of the control piston is controlled by hydraulic fluid supplied from a source of fluid under a pressure correlated with the operating speed of the associated engine. The control piston is slidable between a power piston biased by a resilient means in one direction and actuated in the opposite direction by hydraulic fluid from the source of fluid under pressure.

Abstract: An engine driven fuel injection pump of the type having a cam ring and an advance timing control mechanism to adjust the angular position of the cam ring has an eccentric cam pin effecting an operative interconnection between the cam ring and the advance piston of the timing control mechanism. An externally accessible adjusting means is used to rotate the eccentric cam pin so as to shift the position of the cam ring relative to the advance piston, as necessary, to effect correct static timing of the pump to the engine.

Abstract: A liquid vaporizing attachment is provided for a combustion engine including an air and fuel charge forming device defining an air and fuel passage extending therethrough, an induction passage inlet end for receiving an air and fuel charge from the charge forming device and an engine exhaust system. The attachment defines an intermediate passage extending therethrough including inlet and outlet ends communicated with the outlet end of the air and fuel passage and the induction passage inlet end, respectively. The intermediate passage includes heating structure operatively associated therewith for heating fluid flowing therethrough and liquid vapor injection structure for injecting a heated liquid vapor into the intermediate passage. The intermediate passage includes a horizontal major length portion thereof and upwardly and downwardly opening inlet and outlet end portions, respectively, defining the inlet and outlet ends of the intermediate passage.

Abstract: A carburetion system for metering liquid fuel for supply to an internal combustion engine. Liquid fuel is metered in a single bifurcated metering system by being flowed through a calibrated orifice in response to a proportional pressure reduction which is generated as the result of the summing of a venturi pressure reduction and an auxiliary pressure reduction. Metered liquid fuel is delivered through one branch of the metering system to the engine intake air downstream of the throttle at small and medium engine loads, and through the other branch to the engine intake air upstream of the throttle at large engine loads. Transitioning of fuel flow between the branches is automatic and occurs in response to pressure differences within the system. Fuel delivered to the engine intake air downstream of the throttle valve may be heated or otherwise treated to improve liquid fuel atomization or vaporization.

Abstract: In a diesel engine which includes an air intake system, an exhaust system, and an exhaust gas recirculation passage which recirculates part of the exhaust gases produced by the engine from the exhaust system to the air intake system, a control system for the recirculation of exhaust gases and the flow of intake air, having an intake air flow control valve mounted in the air intake passage, and a recirculated exhaust gas flow control valve, mounted in the exhaust gas recirculation passage, these two control valves being so coupled together that, as one of them opens progressively, the other closes progressively, and vice versa, so that exhaust gas recirculation ratio alters in substantially direct proportion to the amount of opening of the exhaust gas recirculation flow control valve.

Abstract: A fuel saving device for a carbureted engine having a pollution control valve comprising a by-pass duct adapted to convey gases from the crankcase around the pollution control valve directly to the carburetor and a valve in the duct controlled by the manifold vacuum to open the valve at lower pressure in the manifold and close it at less depressed pressures.

Abstract: A damper type control for furnace flues which opens with commencement of oil burner operation and closes when combustion ceases. The damper is operated solely by the presence of draft created by the oil burner blower, and closes in the absence of such draft under the influence of a counterweight. With the occurrence of wind passing the open end of the flue, the pressure differential on either side of the damper also assists in maintaining the damper in closed condition.

Abstract: An internal combustion engine equipped with a blowby gas recirculation system is provided with a jackshaft which is driven by a crankshaft and rotatably supported in a crankcase to operate engine accessories. A rotational part of a centrifugal oil separator is securely connected to an end of the jackshaft to be rotatable with the jackshaft, thereby effectively separating engine oil mist from blowby gas which is sucked through the oil separator to an intake manifold.

Abstract: A direct air cooling device for the combustion chamber of the internal combustion engine in an automobile in which an external air suction port member is provided in a path connecting between the carburetor and cylinder in the internal combustion engine and a valve plate is provided adjacent to the suction port member for slidable movement relative to the air suction port member to close and open the port member.

Abstract: A spark ignited internal combustion engine includes a spark coil in which current is turned on and off to generate spark events. A triangular wave voltage generator and comparator combine to retard the spark events from spark timing signals, the voltage ramping in one direction toward a reference in response to a spark timing signal and ramping in the other direction when the comparator senses that the voltage equals the reference, at which time a spark event is initiated. An RF clamp clamps the input to the comparator to prevent initiation of a spark event from each spark event to the following spark timing event. A minimum burn timer may be initiated by the comparator to prevent current flow in the spark coil for a minimum predetermined time after the initiation of a spark event; and the RF clamp may include a timer to delay its initiation sufficiently to allow latching of the minimum burn timer.

Abstract: An electromagnetic propulsion power supply system utilizing mutual induction coils as transformers to provide high currents to the projectile rail conductors.

Abstract: An archery bow has a frame rearwardly extending mounted on the bow. The frame is adjustable to meet the requirements of the arm length of the user. The frame is generally U-shaped having first and second mounting points on the bow above and below the point at which the forward hand supports the bow and where the forward portion of the arrow rests. The rearward portion of the frame rests against the user's chest or shoulder or whatever other part of the user's body which the user chooses to employ as a rear anchor point. An adjustable bar is moveably mounted on the frame member being slideably mounted having holes in the upper and lower portion of the adjustable bar so that it may be moved along the arms of the frame. Structure for fixing the adjustable bar in a desired location on the frame is included. Such structure may be set screws or the like. The adjustable bar includes a hand grip for the rear hand of the user and an arrow stop for precisely positioning the arrow in a repeatable manner.

Abstract: An adapter is provided for use in venting a coal or wood burning stove through the flue of a fireplace. The adapter includes a fireproof board and a metal pressure plate, each formed with a central opening to receive the exhaust end of stove pipe from the stove. The board and plate are fitted into the fireplace flue and held there by means of a pair of longitudinally adjustable legs, the lower ends of which press against the floor of the fireplace. The pressure plate is provided with studs to receive the upper ends of the legs and tabs are provided on the plate at the sides of the stove pipe hole for fastening with the stove pipe.

Abstract: An attachment for mounting a fireplace grate to a fireplace hearth for pivotal movement between a horizontal operative position and an upright inoperative position. Access to the hearth area for cleaning is gained as the grate is pivoted to the inoperative position. A stop mechanism is provided to selectively hold the grate in its inoperative position and is releasable, to allow pivotal motion of the grate downwardly to its operative position.

Abstract: A so-called stack stove, especially for the burning of solid fuels and particularly wood has a hood or apron extending downwardly and outwardly along the upper portion of at least its front above the opening into the combustion chamber. A window door is mounted so as to be shiftable upwardly into the hood and locked therein so that it is substantially completely concealed by the hood when the stove is operated in a fireplace mode. In its lower position the door closes the chamber opening and the stove can function as a sealed stove with limited air entry for efficient combustion.

Abstract: A heating stove including a pair of opposite side walls and front, rear and top and bottom walls interconnecting and extending between front, rear and top and bottom marginal portions of the side walls. A pair of inner side panels are provided and spaced inwardly of the side walls and extend between the top and bottom walls defining interior side wall hollow areas. A rear inner panel is spaced inward of the rear wall and extends between the rear marginal portions of the inner side panels defining an interior rear wall area. A firebox is defined between the side panels and the rear panel and front wall and includes a flue outlet opening outwardly from an upper rear portion of the firebox. Combustion air inlet structure is provided operative to admit combustion air into the lower portion of the interior rear wall area and the upper portion of the interior rear wall area and the rear upper portions of the interior side wall areas are communicated.

Abstract: The present invention relates to an adjustable and rotatable stovetop cooker having two telescoping halves. Each half also includes opposed handles which allow the cooker to be picked up and rotated 180 degrees to allow cooking a package of food on both sides.

Abstract: This invention relates to solar collectors of the type having associated reflectors to increase their efficiency, and includes a method of establishing the orientation of the collector with respect to the sun such that the unit may be operated at a high level of efficiency with only a semi-annual adjustment in the angular positioning of the reflector with respect to the collector.

Abstract: A solar heating system for preheating water which may be used in conjunction with an existing hot water heater. The use of potable water as the heating fluid renders the use of a heat exchanger unit unnecessary. A novel collector unit is disclosed which includes a molded plastic collector frame with integral fluid passageway. The durable unitized collector design eliminates the need for frame members, additional fluid conduits, specially manufactured collector plates and multiple collector sealing layers. The invention provides an exceptionally low cost, material intensive solar heating system. Pumping systems are provided to facilitate collector operation in conjunction with high or low pressure preheating systems.

Abstract: A flexible sheath for an endoscope has a flexible hollow cylindrical tube and a helical coil spring which is inserted into the flexible hollow cylindrical tube. One end of the spring is made engageable with one end of the hollow cylindrical tube to adjust the flexibility of the flexible sheath. A mechanism for compressing the helical coil spring is provided at the other end of the hollow cylindrical tube. The mechanism comprises a spring-compressing member disposed at the other end of the helical coil spring and an actuating member for reciprocating the spring-compressing member between a position in which the spring-compressing member compresses the helical coil spring and a position in which the spring-compressing member is axially removed from the other end of the helical coil spring.

Abstract: A foot massage mat formed of rubber, plastics material or the like wherein the mat possesses hill-like protuberances.

Abstract: An apparatus for assisting a person having a foot-drop type disability is provided which includes a leg attachment member, an elastomeric support strap, and a latch and loop for attaching the support strap to the wearer's foot. The elastomeric support strap is secured to both the leg attachment member and one of the latch or loop. When the apparatus is in use, the elastomeric support strap contracts to raise the wearer's foot during the time period that the wearer is not forcibly extending the strap by downwardly extending his or her foot.

Abstract: A guide device for an endotracheal tube which assists in intubating the trachea. The guide device includes a flexible bar which may be inserted in the endotracheal tube. A flexible line extends along the bar and has a free length at the inner end of the bar. When the line is pulled, the free length shortens and causes the inner end portion of the bar to flex in bowed fashion against the endotracheal tube. This urges the tube forwardly toward the trachea and away from the esophagus.

Abstract: To stabilize the inserted position of an endotracheal tube and to protect it against bite-damage, a bite-block of relatively rigid tough plastic has integrally connected front-edge flanges for overlying the upper and the lower lips of a patient for attachment thereto as by strips of adhesive tape, and has a forwardly extending vertically-on-edge flange for attachment thereto of the endotracheal tube as by adhesive tape wrapped therearound.

Abstract: Apparatus for the distention and irrigation of a saphenous vein which is being tested prior to use as a coronary or peripheral bypass graft includes a specially-configured cannula for insertion into the vein, and a pressure-limiting device having a resilient membrane reservoir which limits the hydrostatic pressure delivered to the vein to a predetermined level. The device is connected between the cannula inserted into the vein and a syringe filled with irrigation fluid. As fluid is delivered under pressure from the syringe, the membrane reservoir fills with fluid and inflates within a specified range of pressures so that if excessive force is applied to the syringe, the membrane inflates, and the pressure transmitted to the vein cannot exceed a predetermined maximum pressure. A stopcock connected between the syringe and the membrane allows the membrane to be pressurized with the contents of the syringe.

Abstract: A therapeutic composition suitable for extracorporeal treatment of whole blood comprises a dialyzable chemotherapeutic agent and a dialyzable fluorescable tracer means. The removal rate of the fluorescable tracer compound from treated blood during hemodialysis is a function of the removal rate of unreacted chemotherapeutic agent present. The residual chemotherapeutic agent concentration after hemodialysis is ascertained by measuring the concentration of the fluorescable tracer compound in a dialysate using fluorometric techniques.

Abstract: A clamp for preventing separation of a connected subclavian catheter and intravenous tubing has a tube-like member having internal ridges adjacent one end for gripping a resilient bulb portion of the tubing and has a series of radially moveable jaw members on the other end bendable inwardly to grasp the end of a needle head on the catheter. A lock ring positioned about the tube-like member is slideable into engagement with cam members on the jaw members to lock the latter position.

Abstract: A plural injection assembly comprising a plurality of separate injections capable of separate actuation and a holder for stably supporting the separate injectors together and for manually facilitating the sequential actuation thereof.

Abstract: A liquid dispenser includes a conventional syringe of the type having a piston, a piston rod, an actuating knob disposed in a cylinder, and a needle extending from the cylinder. The invention consists of a needle assembly therefor which includes a cap, a sleeve slidable on the needle and a retainer cap interconnecting the two. The cap is used for closing the needle to preserve the liquid and prevent spillage. The needle is provided with an inner coupler which may consist of two slightly spaced beads fixed to the needle near the end thereof. There is also provided an outer coupler into which may be fitted an extension tube by means of another inner coupler of the same construction as the first one. The inner coupler may be so mounted on the needle that its extension tube is housed in the inner needle, or it may be reversed so that the extension tube extends from the inner needle to extend the point at which the liquid is dispensed.

Abstract: A swab applicator is disclosed for use as a vaginal cleansing instrument, or the like. The applicator includes an elongated, generally hollow tubular nozzle, with a compressed swab body of soft, porous and absorbent material generally at the distal end of the nozzle and in fluid communication therewith. The swab body is highly expandable when wetted, and retaining means in the form of a plurality of spaced ribs form a cage surrounding the swab body to hold the body in position on the distal end of the nozzle and permit the swab body to expand through slots between the ribs when the swab body is wetted. The swab body has fluid passages therethrough to enhance its wetting by liquid dispensed through the nozzle. The nozzle has teeth on the interior thereof for cutting troughs, during assembly, into the exterior of the swab body beneath the spaced ribs and along which liquid can travel to further enhance wetting of the swab body by liquid dispensed through the nozzle.

Abstract: A tampon is disclosed comprising an outer cylinder, a push-out portion which is slidingly fitted into the outer cylinder from the rear end thereof and is adapted to be pushed towards the forward end of the outer cylinder, and an absorbing member contained in said outer cylinder, wherein at least one hole is formed on the outer cylinder at a position behind the absorbing member. The push-out portion is formed by a cylinder having at least one push-out piece having a width slightly smaller than the length of the hole on the outer cylinder in the circumferential direction, the number of the push-out pieces being the same as the number of the holes in the outer cylinder. Before application of the tampon, the push-out piece is kept in contact with the outer face of the outer cylinder by being inserted through the hole in the outer cylinder.

Abstract: Medical apparatus for parenteral liquids wherein at least the surfaces coming into contact with said liquids consist of or contain a chlorinated polyolefin as specified and additionally contain a glycerol ester of an aliphatic fatty acid. The apparatus is characterized by a very good blood tolerance.

Abstract: A catheter having at least two separate lumens, one containing a gas required in connection with the operation of a pressure responsive element adjacent the catheter's distal end and the other for conveying liquid to and from a port spaced proximally from the pressure responsive element. The two lumens are separated by a longitudinal septum and combine to perform a third function--that of enclosing an electrical conductor which extends through that portion of the gas-containing lumen proximal to the port and through that portion of the liquid-conveying lumen beyond the port. The conductor switches from one lumen to the other through a sealed aperture in the septum. A method of forming such a catheter is also disclosed.

Abstract: A multilumen catheter having passages for the flow of gas, the enclosure of electrical leads, and the transmission of fluids for injection and sampling. The gas transmitting lumen also carries the electrical leads which extend to an electrical element disposed within a passage-providing plug located at a point spaced from the catheter's distal end. The plug blocks the entry of fluids into the catheter without at the same time interfering with the flow of gas therethrough. In one embodiment, the passage-providing plug is at least partially pre-formed and is fitted into the space otherwise occupied by sections of a pair of adjacent lumens, thereby allowing a relatively large electrical element to be mounted within such space; in a second embodiment the element is mounted in a passage-providing plug disposed within a single lumen; and in a third embodiment the element is embedded in a passage-providing plug which is formed in place. Methods for making such catheters are also disclosed.

Abstract: A catheter to be passed through the nasopharynx and into the trachea without contamination of the catheter lumen for obtaining uncontaminated sputum specimens. The catheter lumen is sealed to prevent entry of contaminants by the provision of a length of flexible, expandable tubing placed over and attached to the distal end of the catheter. The flexible tubing is rolled-up over a portion of its length and inverted into the unrolled portion, with the unrolled portion forming a cuff encircling the rolled-up portion to hold the rolled portion. A syringe pump connected to the opposite end of the catheter introduces fluid under pressure into the lumen of the catheter to expand the cuff and urge the rolled-up portion of the tubing from the cuff, and to unroll the tubing, whereby the lumen of the catheter is unsealed. An inner catheter is inserted into the lumen of the outer catheter and advanced therethrough and out the end beyond the tubing for performing aspiration.

Abstract: A protective pacifier cap which keeps pacifier clean and germ free. This cap is attached to base of pacifier with therein connected by lining arrow on cap, to opening on pacifier. Line up, snap on, and twist to put together. Line up, pull apart to separate parts. There is a handle to pull apart and snap together. The cap extends to form a handle which may be gripped in a baby's hand. At the end of the cap handle is a hole for attachment to a roller-buggie. This cap is for keeping germs away from baby pacifiers.

Abstract: Compression and elevation apparatus particularly designed for use by an athlete immediately after sustaining a soft-tissue injury, and which also may be used during subsequent treatment of the injury. The apparatus comprises a substantially rectangular tank having a pair of apertures on opposed, parallel sides thereof, one aperture being positioned higher than the other. A waterproof, flexible tubing, such as rubber, is connected between the apertures and is adapted to receive the injured arm or leg. Immediately after sustaining an injury, the user inserts his injured limb through the tube and the tank is filled with a mixture of water and ice, which results in immediate cold compression on the injured limb while being maintained in an elevated position. During subsequent treatment, the tank may be filled with hot water to provide heat treatment for the limb, or two tanks, one having hot water and one having cold water, may be used for contrast therapy.

Abstract: A patch which is attached to a patient to collect sweat is formed. The patch collects sweat from a patient in a non-intrusive manner which produces very accurate and precise results to determine the amount of drug and/or alcohol use by such patient.

Abstract: In an axial flow rotary separator, a threshing or separating grate, surrounding and generally concentric with a rotor is made up of two generally semi-cylindrical halves. An interconnected adjusting linkage arrangement is connected to and supports both halves adjacent their axially extending free edges. Operation of the linkage moves both grate halves simultaneously and equally. Each grate halve comprises two axially extending grate panels connected to each other so as to permit pivoting about an axis close to their inner surfaces and parallel to the rotor axis.

Abstract: A hopper for a cigarette making machine includes an elevator, conveying means for conveying a carpet of tobacco towards the elevator, whereby the elevator carries upwards a stream of tobacco from the carpet, and a photoelectric or other position-sensing device mounted near the elevator at a position such that it detects upward movement of tobacco from the carpet in a vicinity adjacent to the elevator indicative of the start of rolling; and including means for temporarily stopping or reducing the speed of conveyance of the tobacco carpet towards the elevator to obviate the rolling condition.

Abstract: In the production of cheroots and similar tobacco articles with a wrapper made from natural tobacco relieved of central rib portions but containing portions of side ribs, the said ribs are flattened solely in the end flap of the wrapper.

Abstract: Fluid is metered into a conduit by a device which includes a detector for detecting the flow rate in the conduit, an amplifier for producing a pneumatic pressure which is dependent on the flow rate sensed by the detector, a control unit having a control shaft connected to a control diaphragm which is subjected to the pneumatic pressure from the amplifier, a motor unit having a hydraulically-pulsated motor/diaphragm connected to a motor shaft which is aligned with and contacted by the control shaft, and a pumping unit having a pump diaphragm connected to the motor shaft to meter fluid into the conduit.

Abstract: An electromagnetic valve comprises yoke means having a pair of projecting elements which protrude outwardly in the mounting side of said valve, one of said projecting elements having at its outward end a pawl which is outwardly bent, and the other projecting element having its outer end portion which is inwardly bent substantially at right angle, said outer end portion having a threaded aperture for bolting said yoke means to a mounting bracket, said pawl in said one projecting element being engaged by an opening which is formed in said mounting bracket.