Abstract: The present invention relates to a method of heat exchange performed by blowing atomized or sprayed water against an evaporator pipe through which a refrigerant is circulating and by forcing air to circulate through the sprayed water, on to a refrigerating installation or a refrigerator in which the cooled moist air is used. This invention is useful for the refrigeration of cakes and perishable foods, for example, because a substance being refrigerated can be refrigerated while its moisture is prevented from evaporating, since the air cooled by the invention heat method contains tiny water droplets contacts the substance being refrigerated directly.

Abstract: This disclosure relates to a heat pump including a plurality of interconnected elements, each of said elements comprising a piston body having an evaporator section at one end thereof and a condenser section at the other end thereof, each condenser section being connected to a vapor condenser. Each element has its evaporator section connected by a vapor bridge to the condenser of an adjacent element. Each piston body contains a working fluid having a liquid phase and a vapor phase, the liquid phase forming a liquid piston which oscillates during operation and the pistons of the elements oscillating with a phase displacement. The evaporator sections are located in relatively warm areas and the condensers are located in another cooler area. Portions of the liquid in the evaporator sections vaporize and the vapor is heated, and the heated vapor is condensed in the condensers thereby transferring heat from the warm areas to the cooler areas.

Abstract: A cooling apparatus for machinery utilizing a vaporizable liquid refrigerant and constituted by a tank in which machinery to be cooled is immersed in the vaporizable liquid refrigerant sealed within the tank, a condensor disposed above the tank substantially horizontally, and distributing pipes connecting the tank with the condensor so as to convey the vapor produced from the vaporizable liquid refrigerant within the tank by the heat generated in the machinery to the condenser, and the vapor is condensed in the condenser, returning to the tank again through passages separately constituted in the distributing pipes.

Abstract: A device for detecting leaks of cryogenic materials from a structure, said device comprising a heat-conductive element which can be brought into contact with the cryogenic material-containing structure, and a shape memory effect element capable of effecting a displacement according to the cryogenic temperature to which the element is subjected.

Abstract: A control for a multi-stage heating and cooling system used to temperature conditioning a comfort zone. The control includes a microprocessor responsive to a temperature sensor installed in the comfort zone. Heating and cooling setpoints and a lookup table including a plurality of ranges for deviation of the comfort zone from the setpoint temperature and associated limits for the rate of change of the comfort zone temperature used in determining specific staging control actions are stored in solid state memory accessed by the microprocessor.The stages of temperature conditioning are controlled as a function of both the deviation of the zone temperature from the heating or cooling setpoint (depending on the system operating mode), and the rate of change of zone temperature. The mode of operation, i.e., heating or cooling, is determined by the relative values of the zone temperature and the heating and cooling setpoint.

Abstract: A method and apparatus for rapidly chilling a cool pack associated with a refrigeration system wherein slush-like medium is introduced into the pack in a first step and frozen to a substantially solid state in a second step.

Abstract: The invention concerns a heating system incorporating an absorption-type heat pump where the generator is heated by an aerated gas burner combusting a fuel-lean mixture whose efficiency is very high both at full and at part load and whose flue gas has a very low nitrogen monoxide and nitrogen dioxide content.The mixture of fuel gas and combustion air flows from at least one mixer tube 2 into a mixer 3 and is fired on the burner plate 4 cooled by a rich solution which is arranged at a distance of less than 50 mm from the generator 17.When the generator is of the vertical type, a burner is preferably installed where the burner plate surrounds the generator concentrically at such a distance from the bottom of the generator that only the central section of the generator is directly heated.Preferably two heat exchangers are located in the flue duct downstream of the generator to recover the waste heat, including the heat of condensation.

Abstract: In a hot water system, a receptor heat exchanger unit mounted in a wall with a flat surface exposed in a room. A refrigerator positioned in that room has a plate with a condenser coil thereon. The plate is exposed, and it extends outwardly beyond the wall of the refrigerator body and at the wall, and the plate is positioned in heat transfer engagement with the exposed surface on the receptor heat exchanger unit.

Abstract: A cooling system for use with an engine and an associated engine driven flywheel. The system includes: centrifugal blower means fitted to and rotatable with the flywheel for developing a pressure differential thereacross; a housing enclosing said flywheel and said blower means for defining an air passage having a housing inlet for communicating air to said blower means and an output for permitting the discharge of air therethrough; air cooled heat exchange means connected to and positioned relative to the housing to permit air to flow therethrough by virtue of the operation of the blower means; damper means responsive to at least one engine operating parameter, for controlling the air flow through the heat exchange means; and compartment means for enclosing the blower means and housing and oriented to prohibit the entrance of ram air thereto and including inlet means for receiving non-ram air.

Abstract: The present invention relates to a heat exchanger which operates by blowing atomized or sprayed water against an evaporator pipe through which a refrigerant is circulating and by forcing air to circulate through the sprayed water, and to a refrigerating installation or a refrigerator in which the heat exchanger is used. This invention is useful for the refrigeration of cakes and perishable foods, for example, because a substance being refrigerated can be refrigerated while its moisture is prevented from evaporating, since the air cooled by the invention heat exchanger contains tiny water droplets and contacts the substance being refrigerated directly.

Abstract: Resolution and sensitivity of photoconducting light sensitive devices vary nversely with temperature. Hence it is desirable to provide cooling means for photoconductive radiation detectors. One type of low temperature photoconductor is fabricated by placing the photomultiplier tube in a double-walled vacuum Dewar flask. In another type, the detector is mounted near a cryogenic projection, or cold finger, emenating from a refrigerator. In this case fabrication is critical, and great care must be exercised when the cryogenic cold finger is inserted in the Dewar well in order to avoid breakage. A different solution herein to the problem provides detector not as subject as prior devices to breakage of the Dewar detector wall.

Abstract: A flat knitting machine including a presser foot assembly comprising a support mounted on the machine for movement along the needle array of the machine and at least one presser foot mounted on the support. The assembly includes a supporting arm carried on the support and itself carrying a slider on which a presser foot is mounted, the supporting arm providing a structure for effecting guided displacement of the slider up-and-down in relation to the needles. Resilient means, such as one or more springs, are arranged to urge the slider and presser foot down, away from the support, so that the presser foot can ride up on the supporting arm against the pressure of the resilient means and thus the whole of the presser foot extending from in advance of the rising needles to the rear of the fully raised needle position is resiliently mounted in the machine.

Abstract: A dual needle arrangement has a pair of needles each having a tip and a rear end, a flexible cord connected between the rear ends of the needles, and an eye in the cord between the rear ends. A filament can be laid in by being threaded through the eye and then pulled through the row behind the needle. Both needles can be knitting or crocheting needles. When one is a hook-type crocheting needle and the other is a pointed knitting needle these two needlework styles can be combined to produce a unique type of needlework, and the changeover from one style to the other is easy and not complicated by the inlay filament. The cord can be formed of metal wires, or it can be of a flexible synthetic resin in which case the eye is formed by splicing in the cord. This eye can also be formed by flattening a portion of the cord between the two rear ends and slitting this flattened portion.

Abstract: A rolling mill plant has a planetary skew rolling mill and a reducing or sizing rolling line disposed at a short distance therebeyond for the purpose of manufacturing tubes. In order to avoid axial stressing of the work material between the planetary skew rolling mill and the reducing or sizing rolling line when the work material is simultaneously located in both of them, a tension and compression measuring device is disposed in the region of the reducing or sizing rolling line for the purpose of corresponding regulation of the latter's drive motor. A torque measuring device is disposed between the mounting of the mandrel rod of the planetary skew rolling mill in order to be able to detect torque stresses in the work material which are then eliminated in dependence upon the measured values of the torque measuring device by corresponding regulation of the rotational speed of the rolls and of the rotor of the planetary skew rolling mill.

Abstract: A system for sensing tensile stress in a metal sheet being stretch formed between gripping jaws in a stretch press. Reaction force of the stressed sheet causes elastic deformation of each jaw, and this deformation is detected by movement of a light beam emitted from a source secured to the jaw. A photosensor output signal related to light-beam movement is correlated with a second signal representing sheet strain or elongation to detect when the sheet has been tensioned to the yield point.

Abstract: In a device for straightening vehicle bodies, a long-stroke traction jack is mounted vertically within a vertical column, the jack body being attached to the lower end of the column. The column is carried by a movable base and can be attached to the ground by means of retaining chains. One end of a traction chain passed over a guide pulley and engaged within the interior of the column is attached to the free end of the jack operating rod.

Abstract: A method for detecting knocking in internal combustion engine, wherein a plurality of constants K is stored corresponding to a plurality of ranges of engine speed. A reference value is calculated from a means value of an output signal of a knock sensor, from the constant K corresponding to an engine speed and from a predetermined offset value, through a calculation of multiplying the mean value by the constant K and adding the offset value to the result of the multiplication. Then an output signal, newly provided from the knock sensor after the calculation of the mean value, is compared with the reference value so as to decide that knocking occurs in the engine when the newly given output signal of the knock sensor exceeds the reference value. Therefore, the reference value can be suitably determined corresponding to the engine speed so that a detectable lower limit of knocking intensity is kept to be substantially constant.

Abstract: A dynamic engine power test method comprises operating the engine at a low speed, accelerating the engine at full throttle to a predetermined high speed, such as high idle, without absorbing or dissipating power therefrom, measuring the engine speed and elapsed time to determine the angular acceleration at specific speeds in the operating range of the engine or during one or more relatively small discrete speed intervals or windows preferably corresponding to peak torque speed, an intermediate point, rated speed, and a speed between rated speed and high idle. The torque output of the engine may be calculated manually or preferably automatically for each speed interval based on the equation T=I.alpha. wherein .alpha. is the angular acceleration at that speed and the horsepower for a nominal speed in the interval may also be calculated based on the torque.

Abstract: A test system uses the four square principle for loading front wheel drive units of automobiles under torque, and provides the necessary loads on the front wheel drive unit for adequate testing. The unit under test may be subjected to "steering" loads; to torque; to axial loads; and to "jounce" which simulates vertical loads on front wheel drives of automobiles caused by road irregularities, holes or other obstacles. The present device permits application of all of these loads into four separate front-wheel drive-steering units for efficient testing. The mechanical configuration insures the ability to precisely control the loads in the various modes of operation.

Abstract: A fuel injection rate deducing system for a diesel engine includes a fuel injection pump and a fuel feed pump. The injection pump has an inlet, an outlet, and an overflow outlet. The outlet is connected to the engine to conduct fuel from the injection pump to the engine to effect fuel injection. The overflow outlet is internally connected to the inlet. A fuel feed line is connected to the inlet to conduct fuel to the injection pump. The feed pump is disposed in the feed line to drive fuel into the injection pump via the feed line. A fuel return line connects the overflow outlet to the feed line at a position upstream of the feed pump. At least some of the fuel conducted to the injection pump via the inlet exits from the injection pump via the overflow outlet and then all enters the feed pump via the return line and the feed line. A flowmeter measures the rate of fuel flow through the feed line upstream of the connection of the return line to the feed line.

Abstract: The tire for automobiles being measured is loaded in advance by the load applying means and the drum is driven to rotate the tire. A displacement of the rotatable shaft produced in response to a variation in the radial force acting between the tire and the drum is detected as a displacement of the movable member. The movable member is movable with respect to the drum about a fulcrum which lies in or is located in the vicinity of a plane including a surface in which the drum and the tire are held against each other. Thus any influence by a moment due to a lateral force imposed on the tire can be eliminated, and the apparatus can measure a radial force variation with precision.

Abstract: A tire pressure gauge has a tube member with first and second open ends, in which a diaphragm member is provided crosswise and suspended by a spring to sense the pressure of a tire. An indicator rod is movably provided lengthwise to be actuated by the diaphragm to extend outwardly through the second open end for visible indication. A writing and a time-indicating devices are incorporated with the gauge to act multi-functions of the gauge.

Abstract: In a system for testing drilling mud, a mixing tank and an aging vessel are hydraulically connected to supply drilling mud to a closed recirculating path through which mud is pumped to measuring instrumentation. The accumulator has a head which is removable for inspection and maintenance of the gas pressurized piston which pressurizes the drilling mud. The seals on the head are positioned to minimize wear.

Abstract: A flow sensor comprising a pair of thin film heat sensors and a thin film heater is disclosed. A base supports the sensors and heater out of contact with the base with the sensors disposed on opposite sides of the heater and closely adjacent thereto.

Abstract: This process consists in raising the temperature of a probe immersed in the fluid to a temperature threshold corresponding to an electric resistance (R.sub.1), in measuring at least a second temperature threshold corresponding to a second resistance (R.sub.2, R.sub.3), in measuring the time elapsed between these different thresholds and in calculating a parameter of the fluid linked to the thermal transfer between the probe and the fluid, i.e., the temperature, the velocity, the viscosity, the density, the specific heat or the thermal conductivity.

Abstract: A method of nondestructively detecting the presence of free liquid within a sealed enclosure containing solidified waste by measuring the levels of waste at two diametrically opposite locations while slowly tilting the enclosure toward one of said locations. When the measured level remains constant at the other location, the measured level at said one location is noted and any measured difference of levels indicates the presence of liquid on the surface of the solidified waste. The absence of liquid in the enclosure is verified when the measured levels at both locations are equal.

Abstract: A control circuit for controlling the self-cleaning function of a humidity sensor provides accurate control of the temperature of a humidity responsive region during the self-cleaning mode and an improved humidity detecting characteristic during the humidity detecting mode by changing the characteristics of the control circuit for the humidity sensor having self-cleaning function through the variation of resistances, such a variation being dependent upon the mode of the sensor.

Abstract: A portable manual muscle tester has an external actuator, a case capable of being held in one hand and a digital display indicating peak force applied to the actuator. Strain gages connected in a bridge circuit are located on a flexure contacted by the actuator. The flexure is a cantilever beam shaped to fit the small case and to prevent reflected or mounting stresses being registered in the force display. The circuit from the strain gage bridge to the display includes an instrumentation amplifier followed by a peak freeze circuit that includes operational amplifiers and a peak freeze capacitor. The peak freeze capacitor provides a voltage that is read by a digital volt meter. A further operational amplifier connected as an integrator feeds back from the peak freeze circuit to an input of the instrumentation amplifier to reset the meter to zero after the displayed force reading has been noted.

Abstract: An acoustic emission is detected by a pickup, and its output is converted by a A/D converter into a digital signal, which is provided to a fast Fourier transform processor. The fast Fourier transform processor comprises a cascade connection of a plurality of operation stages, each composed of first and second input memories, a third memory having stored therein a rotation vector and an arithmetic unit for performing a Butterfly operation through using the pipelined architecture. In each stage one of the first and second input memories and the third memory are read out and the Butterfly operation is carried out on the pipelined basis. The operation result is written into that one of the first and second input memories of the next operation stage which has not been read out; thus all the operation stages perform a pipelined operation as a whole. The power of a spectrum obtained as the operation result of the last operation stage is calculated, obtaining a signal corresponding to the acoustic emission.

Abstract: An acoustic polarimeter is provided for measuring the acoustic birefringence of a plate with parallel faces.The plate to be measured is fixed to one face of an acoustically isotropic body and to the other face are fixed transducers having their linear transfer axis at 90.degree. from each other transmitting waves at pulsation .omega. modulated respectively by cos .OMEGA.t and sin .OMEGA.t. After reflection from the rear face of the sample, the signals X.sub.1 and Y.sub.1 received by the transducers are processed in processing circuits. The signals x.sub.1 and y.sub.1 are multiplied by a signal cos (.omega.t+.phi.) supplied by a phase-shifter controlled by a signal S.sub.1. After filtering, signals X and Y are obtained which are used for generating two signals A and B. A microprocessor receiving the amplitudes of these signals A and B controls the phase-shifter and supplies the birefringence angle .phi.. The direction of the first axis is obtained by synchronous detection of signal A.sub.1 by sin 2 .OMEGA.t.

Abstract: An ultrasonic therapy applicator wherein therapeutic heating is provided by creating a diffuse ultrasonic field in a liquid, such as water, in a tank in which living tissue may be immersed. The diffuse acoustic energy is produced by frequency-modulating the driving ultrasonic frequency in a band employing "white noise" modulation. The apparatus consists of a reverberation tank suspended from a support by four wires. The support is used to mount a transducer, a hydrophone, a specimen holder and a stirrer. The tank is surrounded by a temperature bath. The hydrophone is used for measuring decay rates. The transducer is acoustically matched to the water. Ultrasound is coupled from the transducer via an ellipsoidal vertical reflector vertically aligned below the acoustic window of the transducer. To calibrate integral dosage a temperature sensing probe is used, of the differential temperature analysis type.

Abstract: A liquid filled pressure gauge in which temperature induced volumetric changes inposed on the liquid fill are compensated for by a tensioned flexible diaphragm secured in a pressure-tight spaced relation on a cover plate for the gauge casing. For receiving the diaphragm pre-tensioned, the cover includes an annulus extending laterally from the cover surface with a negative draft on its circumference. By virtue of the diametral relationship between the outside diameter of the diaphragm about the draft surface of the annulus and the internal diameter of the case opening, the diaphragm incurs a friction fit as the cover is emplaced causing diaphragm tension to be increased.

Abstract: A test machine for determining the strength of concrete which is suitable to perform quality tests of structures or structural elements within the plant or at the site. The machine has a loading unit provided with a force measuring means. A breaking cup is embedded in the concrete to be tested when it is wet, an extractor head being fixed to the breaking cup, serving for extraction thereof from the solidified concrete, and between the force measuring means and the extractor head there is inserted a joint ending in a releasable connecting piece.

Abstract: A method for measuring an adhesive strength of a multi-layer material having at least two layers, such as a plain bearing, which method includes the steps of placing a mold on one surface of the multi-layer material, casting a brazing metal into the mold to form and secure a resulting cast structure to the one surface of the multi-layer material such that the cast structure includes a first column portion connected to and extending substantially upright from the one surface of the multi-layer, an intermediate portion extending and diverging in diameter from the upper end of the first column portion and a second column portion extending from the upper end of the intermediate portion, causing the opposite chucks of a tension tester to grasp the second column portion and the multi-layer material or a holder connected to the multi-layer material, respectively, and applying a tensile force to the respective layers of the multi-layer material in a direction transverse to the one surface of said multi-layer material

Abstract: A rotational rheometer utilizes a rotor coupled to a test specimen and suspended in a stator by a low friction bearing suspension system, a compensation arrangement which compensates for bearing torque on the rotor throughout the full range of rotation of the rotor, and position transducers arranged for determining accurately both the angular position of the rotor throughout a full range of 360.degree. of rotation, and the longitudinal position of the rotor, relative to the stator.

Abstract: A mass stream of a dusty solid fuel is conveyed pneumatically through a supply pipe leading from a dosing container to a gasification reactor. A gas admixing device is connected in series with the supply pipe near the outlet of the container for injecting an auxiliary gas into the mass stream. The parameters of the mass stream are measured before and after the mixing device and applied to a computer which determines the amount of the injected gas and the value of the mass stream. In this manner, the arrangement for measuring the gas stream can operate continuously and independently from the technology of feeding the dust to the supply pipe and provides quantitatively correct measuring values at all dust concentrations and system pressures. The method eliminates complicated velocity measurements in two-phase dust streams and does not necessitate any measuring probes which project into the conveying channel and obstruct the flow.

Abstract: A digital vortex shedding flow measuring transducer (10) includes an optical conductor (20) cantilevered to a conduit (15) accommodating the flow and an optical receiver (35) which intercepts an optical signal from the conductor as the conductor vibrates in response to vortices shed therefrom due to fluid flow thereover.

Abstract: A liquid flow indicator includes means for indicating a flow of liquid therethrough, measuring the rate of flow of liquid therethrough, and selectively functioning as a one-way valve. The device includes a housing which is placed in a liquid flow conduit so that all liquid in the conduit flows through the housing whereby a float disposed in the housing is allowed to be displaced from a closed seated position wherein it selectively blocks the reverse flow of liquid through the housing to one of a plurality of open positions wherein it allows the forward flow of liquid through the housing. The amount of displacement of the float is discernible by calibrated indicia carried on the float and the housing so that not only the indication of a flow of liquid through the device is indicated, but also the rate of flow of that liquid.

Abstract: A contact gauge utilizable for determining contact pressure conditions between two bodies at their interface including a thin plastic sheet capable of memorizing an induced birefringence and a thin, load transmitting member attached to the sheet for inducing the birefringence therein. A method of employing the contact gauge for determining the contact pressure conditions between the two bodies also forms a part of the present invention.

Abstract: A transducer adapted for load cell applications comprises a base having a load receiving member connected thereto by at least one and preferably two flexure springs to permit the member to flex relative to the base. A sensing beam, having one or more strain gauges secured thereon, is mounted in cantilevered relationship on the base and has a free end positioned adjacent to the member for engagement therewith to sense the load imposed on the member to produce a variable electrical output signal in response to the magnitude of the load. An adjustment is preferably provided to selectively adjust a point whereat a sensing tip mounted on the member engages the sensing beam whereby the output signal can be selectively adjusted to vary the weight capacity of the transducer.

Abstract: This invention relates to an apparatus for automatically sampling a clarified test solution from a suspension to be tested, which comprises two filtering tubes being immersed in the suspension, a circulator connected to the one tube, and a sampling cell connected to the circulator and the other tube. The suspension is sucked by the circulator and filtered through the one tube. The filtered and clarified test solution is sampled in the sampling cell and the residual test solution is returned to the suspension through the other tube. A flow direction of the test solution is reversed at intervals so that the filtering tubes are not blocked by suspending solids.

Abstract: Sample-taking apparatus, includes a container for bulk material feed, the container having an upper cover region, a lower discharge region and a side wall having a discharge opening formed therein, the bulk material feed flowing at least discontinuously from the upper cover region to the lower discharge region of the container, an exposed sample-taking worm being attached to the side wall and projecting through the discharge opening into the feed for conveying bulk material samples from the feed by rotating, a rotary drive connected to the sample-taking worm, and a collecting device integral with the container, the worm having a shaft with an end, at least the end being immersed in the feed, the worm having worm threads formed thereon with surfaces forming an imaginary surface of projection extended normal to the worm shaft, the worm thread surfaces forming worm segments with increasingly smaller conveying surfaces as seen in direction toward increasing depth of immersion of the worm into the feed, during sam

Abstract: A liquid micro-dispensing pipet consisting of a main barrel with a snap-on dispensing tube tip. An axial, upwardly spring-biased operating shaft is slidably and rotatably engaged in the barrel, connected to a plunger in the dispensing tip. The snap-on tip can be at times disengaged from the barrel by exerting axial downward force on the shaft. Stop means to limit the intake movement of the plunger is provided, said stop means consisting of an abutment sleeve slidably and non-rotatably mounted on the upper portion of the shaft and threadedly engaged in the barrel, the abutment sleeve being engageable from below by a stop washer secured on the shaft, which is normally urged upwardly by its biasing spring. The normal elevated position of the plunger can be varied by rotating the barrel relative to the shaft.

Abstract: In automatic sampling arrangements for supplying liquid samples to analytical instruments, it is convenient to have the samples in open bottles (21) in circular ranks (16), (17) in a turntable (1) indexed in rotation under a sampling mechanism (27). It is desirable to maintain the turntable horizontal while being inserted into a compartment (4) containing the sampling mechanism and a turntable drive assembly (24). Also, for easy operation, it is desirable that the turntable need not be registered accurately in the compartment. The arrangement is constructed so that the turntable is inserted, via an aperture (6) into the compartment in a direction perpendicular to its axis of rotation. The turntable is located by three bearing surfaces (29), (31) and (24) which engage the circumference of the turntable, the driving assembly (24) being one of the bearing surfaces and also engaging the circumference to rotate the turntable.

Abstract: In a pushbutton tuner wherein cross arms are mounted with their flat surface parallel with the surface of the tuner base, a cross arm mechanism includes a pivotally supporting portion of a frequency setting member inserted in an engaging hole of a fixing plate mounted along the cross arm, a slit which is formed in the fixing plate so as to open at one end of the same to be inserted in the pushbutton extends to a hole formed in the same by passing through the engaging hole, and a pair of side faces for receiving a force which narrows the slit are formed at both sides of the end of the fixing plate where the slit opens, so that contacting portions formed on a slide member slidable in response to advance of the pushbutton come to stress the side faces.

Abstract: In a cross arm mechanism in a pushbutton tuner including a setting plate pivotally coupled to a setting pin provided on a cross arm and a plate spring so mounted as to surround the setting plate whereby fixing the setting plate to the cross arm when a pushbutton is mounted on the cross arm, an improvement which comprises a sectorial protuberance formed on one surface of the setting plate, a guide hole in a symmetrical V-like configuration formed in the cross arm for receiving the sectorial protuberance, a suppressing means for suppressing the sectorial protuberance toward the narrowed portion of said V-like guide hole.

Abstract: In a transmission including a transmission casing, a rotational speed changing mechanism, and a differential mechanism which has a differential power input gear, a power output shaft transmits the rotary power output of the rotational speed changing mechanism to the differential mechanism via a power output gear provided at its one end and meshing with the differential power input gear. This power output shaft is formed with a first lubricant passage extending from its one end opening at the one end of the power output shaft to the other end opening to a point on its side surface. A bearing rotatably supports a part of the power output shaft proximate to the power output gear from the transmission casing. This bearing is located close to the abovementioned point on the side surface of the power output shaft.

Abstract: An adjustable position control lever stop in a control console of a tractor. The control levers operate a draft load sensing system through a three-point hitch between the tractor and the implement. The control levers in the control console include a draft load sensing control lever, and a position control lever which operates with the adjustable position control lever stop.

Abstract: A gear drive has an input shaft driven by a variable speed, reversible hydraulic motor. The input shaft mounts one of two one-way clutches. The second one-way clutch is mounted on a quill output shaft disposed about the input shaft and connected to the input shaft by reduction gearing. The two one-way clutches are joined together and to a stub shaft. Rotation of the motor in one direction will cause one of the clutches to engage to drive the stub shaft in one speed range while rotation of the motor in the opposite direction will cause the other clutch to engage to drive the stub shaft in a second speed range.

Abstract: After the gear ratio of an automatic transmission has been increased in response to a braking operation the return to normal operation of the automatic transmission is controlled by logic circuits interconnecting threshold switches operated by the brake pedal and the accelerator pedal and by a read-only memory that stores a maximum engine speed for all values of vehicle speed so that the higher gear ratio is maintained until either the brake is released or the maximum engine speed is exceeded and then the return to normal transmission operation is further delayed until the accelerator pedal is again actuated. In one method, during the period of further delay the gear ratio continues at its raised value. In another embodiment the period of further delay begins with storage of the vehicle speed at the moment and proceeds with control of the transmission to maintain that speed.