Abstract: A wheeled vehicle has an internal combustion engine provided with an air intake having a throttle valve. A change speed transmission drives certain of the wheels and receives power from a fluid torque converter having an impeller driven by the engine and a turbine connected to drive the change speed transmission. A clutch establishes a direct drive between the impeller and the turbine under certain operating conditions of the vehicle and the clutch operation is controlled by an hydraulic circuit. Valves and controls are provided in the hydraulic circuit and responsive to the vehicle speed to allow slipping of the clutch at low speeds and direct drive coupling of the clutch at high vehicle speeds. The clutch is further controlled by the throttle opening to limit the direct drive coupling under high vehicle speeds and large throttle openings. In one form the clutch is also controlled by a fluid by-pass mechanism to allow slipping of the clutch during low torque transmitting conditions.

Abstract: A clutch is interposed between the driving gears of a grinding mill and the driving motor to protect the gears from damage by mechanical overloading. The clutch is set to slip at torques below those required to structurally damage the gears yet higher than design load and the clutch released and the mill is shut down after a preset degree of clutch slippage occurs.

Abstract: A fluid coupling device is provided of the type including an input coupling member (11) and an output coupling assembly (13). The unit includes a fluid operating chamber (33) and a fluid reservoir chamber (37), and a valve means (55) is included to control the flow of fluid between the chambers. The valve means (55) includes an elongated valve element (57) which is moved axially in response to energization of an electromagnetic coil (75). The valve element (57) includes a control portion (71) which is oriented at approximately a right angle relative to the valve element (57). The flow control portion is in engagement with a cylindrical surface (51) which defines the valve port (53), such that axial movement of the valve element results in sliding engagement between the control portion (71) and surface (51) to cover and uncover the valve port (53).

Abstract: The single lever control for operating the clutch and throttle of a marine motor has a support on which a sleeve is mounted on a pivot. A rod is mounted in the sleeve for axial movement. The distal end of the rod is actuated to move the rod and the sleeve about the pivot and also to move the rod axially relative to said sleeve. An actuating arm and a cam track cooperate to move the rod and sleeve in an arc about the pivot between first and second positions between which the clutch is operated by an operator actuated by rotation of the arm about its pivot. The actuating arm moves the rod axially relative to said sleeve when the arm is beyond the clutch operating range. The rod is connected to the throttle. A friction device acts on the rod to resist axial movement of the rod relative to the sleeve. The friction load resists change of the throttle setting but has no affect on clutch operation.

Abstract: A vehicle drive arrangement in which a drive shaft (10a) is coupled with a first hollow driven shaft (12) and a second driven shaft (11) within hollow driven shaft (12) by first (14) and second (13) coaxial clutches respectively clutch (13) which is adjacent flywheel (10) is operated by a force transmitting path in the form of pins (17) located outside both driven shafts and passing axially through the central portion (24) of clutch (14). This produces a more compact arrangement since the force transmitting path for the operation of clutch (13) does not pass around the outer periphery of clutch (14).

Abstract: Method and apparatus for controlling an electromagnetic clutch of a vehicle to transmit a torque of the engine to the drive wheels through an engaging action thereof which is effected by a solenoid, a clutch torque to be transmitted by the clutch being varied as a function of an electric current to energize the solenoid so as to be increased with an actual speed of the engine during the engaging action of the clutch. The method or apparatus comprises: a step or device for detecting a currently required output of the engine during a period of the engaging action of the clutch; and a step or device for changing a rate of increase in the electric current relative to the actual speed of the engine, so that the rate of increase is increased as the required output of the engine is decreased. The clutch may be of magnetic powder type.

Abstract: An electrical switch for sensing operation of a hydraulic cylinder, the switch being normally open and closing an electrical circuit when the cylinder is pressurized to effect a desired operation only when there is fluid at a predetermined pressure in the cylinder. The hydraulic cylinder is the slave cylinder of a motor vehicle clutch hydraulic control and the electrical circuit controlled by the switch is, for example, the motor vehicle engine starter motor relay circuit, such that the starter relay circuit is inhibited unless sufficient pressure is present in the cylinder, corresponding to the pressure necessary to cause the slave cylinder output member to fully release the clutch.

Abstract: System is provided for controlling the pressure with which a clutch is engaged, with the throttle opening and the rotational speed of a driven shaft of the clutch. A microprocessor reads a throttle opening and the rotational speed of the driven shaft of the clutch at a time interval of 0.4 sec, and accesses a particular group of controlling data which control the clutch engagement and which are grouped together as a function of a time lapse l as well as the read values of these parameters. During the interval of 0.4 sec, the microprocessor sequentially outputs the controlling data of the particular group with a time subinterval of 0.05 sec. The system detects a difference between the last data of a preceding particular group and the first data of a subsequent particular group at the renewal of the data group and then corrects subsequent data for controlling clutch control pressure so as to smooth the change of the clutch control pressure.

Abstract: A choke lever device for a two-wheeled motor vehicle wherein choke adjustment is effected through a wire by a choke lever mounted on a handle part. The choke lever is mounted rotatably around a handle pipe serving as a center axis.

Abstract: An electronic control method for vehicles, wherein, when exercising control to start a vehicle from rest, the vehicle engine and clutch are controlled in a very low speed control mode, if the amount by which an accelerator pedal is depressed is less than a set value. If, however, the amount of accelerator pedal depression is greater than the set value, the engine and clutch are controlled in an ordinary start control mode. When the vehicle is travelling and the speed thereof is less than a set value, the clutch is controlled in a start control mode. When the travelling speed of the vehicle is greater than the set value, the clutch is controlled in a shift mode.

Abstract: An interlock switch mounted in the end of a hydraulic slave cylinder adapted to operate the release mechanism of a motor vehicle mechanical clutch, the slave cylinder being hydraulically connected to a master cylinder having an input member operable by the motor vehicle clutch pedal. The switch is adapted to close the motor vehicle starter relay circuit for a position of the slave cylinder output member corresponding to full release of the clutch, such that the clutch must be fully released in order to allow starting the motor vehicle engine. Preferably, the switch takes the form of a pair of concentric sleeves, each carrying appropriate contacts for closing the circuit, one of the sleeves being reciprocable in unison with the slave cylinder output member, and the other sleeve being automatically adjustable for initial position adjustment and for subsequent readjustment to compensate for wear of the clutch, such that closure of the switch always corresponds to a full release of the motor vehicle clutch.

Abstract: System is provided for controlling the pressure with which a clutch is engaged, with the throttle opening and the rotational speed of a driven shaft of the clutch. A microprocessor reads a throttle opening and the rotational speed of the driven shaft of the clutch at a time interval of 0.4 sec, and accesses a particular group of controlling data which control the clutch engagement and which are grouped together as a function of a time lapse l as well as the read values of these parameters. During the interval of 0.4 sec, the microprocessor sequentially outputs the controlling data of the particular group with a time subinterval of 0.05 sec. When a temporary clutch activation is instructed, the microprocessor changes the length of the subinterval from 0.05 to 0.1 sec, and also changes the time interval l to 0.8 sec. At the initiation of the clutch engagement, a group of controlling data is selected which is to be assigned to a first interval l=0 corresponding to the deceleration of the clutch drive shaft.

Abstract: Apparatus for protection against damage from excessive torque loads, including a fast-acting slip clutch to limit torque transmitted between a drive motor and a mechanical load, and an automatic device to protect the slip clutch from damage due to slippage in excess of a predetermined amount for a predetermined time. A slip measurement device detects the degree of slippage in the clutch, and a timing circuit coupled to the slip measurement device disconnects power from the drive motor after the predetermined time has elapsed. In the illustrative embodiment of the invention, the slip clutch includes an input shaft, a wrapped spring in interference-fit engagement with the input shaft, and an output shaft in engagement with one end of the spring. The spring tends to unwrap from the input shaft and to slip if a torque in excess of a threshold level is transmitted.

Abstract: A system for controlling an electromagnetic clutch for a vehicle, the system has a pulse generating circuit responsive to ignition pulses for an engine for producing pulses, an accelerator switch for sensing the depression of an accelerator pedal of the engine and for producing a first signal.An accelerator position switch is provided for sensing a deep depression of the accelerator pedal and for producing a second signal, and an accelerator pedal switch failure detecting circuit is provided to respond to the inverted signal of the first signal and to the second signal for producing a third signal which is applied to a gate circuit for opening it to pass the pulses thereby enabling the start of the vehicle, even if the accelerator switch is out of order.

Abstract: A friction clutch wherein the diaphragm spring has two sets of inwardly extending prongs which are axially spread apart by the marginal portion of an axially movable release plate serving to disengage the clutch by pivoting the diaphragm spring relative to a plate-like carrier on the crankshaft of the engine in a motor vehicle to thereby relax the bias upon a pressure plate which normally presses a clutch disc against a counterpressure plate connected to the carrier. The coupling between the marginal portion of the release plate and one set of the prongs is a bayonet lock type connection which can be disengaged by turning the release plate relative to the diaphragm spring against the opposition of male and female detent members to thereby move each prong of the one set into register with a discrete opening in the marginal portion of the release plate.

Abstract: A motor vehicle transmission includes an infinitely variable V-belt transmission having a primary (driving) pulley connected to an annular channel which is radially closed from the outside and into which a stationary pitot tube terminates for sensing the pressure of the fluid present in the channel in order to produce a fluid-pressure signal proportional to the speed of rotation of the primary pulley and further includes an input shaft which can be connected to the primary pulley through a fluid-pressure-operated driving away clutch. The input shaft of the transmission is connected to a second annular channel radially closed from the outside into which a second stationary pitot tube terminates for sensing the pressure of the fluid present in the second channel in order to produce a second fluid-pressure signal proportional to the speed of rotation of the input shaft.

Abstract: Clutch apparatus (2) for a marine drive lower gear case (4) includes a wrapped spring clutch (18) mounted to a propeller shaft (6) for engaging drive gear means (8) for driving the propeller shaft. The clutch is radially expandable to engage the drive gears along an axially extending friction face engagement surface.

Abstract: A control system for a hydraulic clutch comprises a starting valve and a complete engagement control valve coupled with the starting valve. The starting valve supplies to the clutch a regulated fluid pressure which is elevated in accordance with a revolution speed of an engine when it is in a start fluid pressure regulating state and which is higher than the regulated fluid pressure provided in said start fluid pressure regulating state when it is in said complete engagement fluid pressure regulating state when it is in a complete engagement fluid pressure regulating state. The complete engagement control valve shifts the starting valve from the start fluid pressure regulating state to the complete engagement fluid pressure regulating state when the vehicle speed exceeds a complete engagement vehicle speed.

Abstract: A hybrid control system is employed utilizing both hydraulic and pneumatic principles to effectively control the engine speed from a remote location as well as controlling the clutch engagement between the engine and a typical load such as a high pressure pump. The hybrid control system utilizes a pneumatic actuator for disengagement of the normally engaged engine clutch mechanism and a hydraulic actuator for control of engine throttle setting. Each of these actuators is controlled through the use of several electrically actuated solenoid valves which are effective to selectively apply a source of air pressure either to the pneumatic clutch actuator for disengaging the clutch or applying air pressure to the top of a hydraulic fluid reservoir to operate a hydraulic actuator connected to the engine throttle mechanism.

Abstract: A clutch release device for a motorized cycle including an engine, at least one rear wheel, a power transmission mechanism for transmitting power of the engine to the rear wheel, and the power transmission mechanism comprising a friction clutch mechanism connected with the engine, a sprocket for chain-driving the rear wheel, a speed change mechanism of a gearing type having a tubular main shaft connected with the clutch mechanism and a counter shaft connected to the sprocket, the main and counter shafts being arranged to be parallel with each other, and the clutch mechanism and the sprocket being disposed on either end side of the main shaft and on the opposite end side of the counter shaft, respectively.

Abstract: A hydraulically operated friction clutch suitable for use in motorcycle. The clutch has driving and driven friction discs axially slidably mounted on a clutch outer and a clutch inner, respectively. These friction discs are adapted to be pressed onto a pressure receiving plate by a pressing plate to make friction driving engagement between the clutch outer and the clutch inner. An annular carrier integrated with the pressing plate is disposed at the opposite side of the clutch inner to the pressing plate. A pressure receiving member is mounted on the center of the carrier through a release bearing adjacent to the end of a driven shaft connected to the clutch inner. The pressure receiving member has a cylindrical form closed at its one end and provided at its open end with a flange which is retained by the inner race of the release bearing. The pressure receiving member is coaxially and axially movably received in a bore formed in the driven shaft.

Abstract: A marine drive for a boat includes a torque converter between the engine and propulsion unit. The torque converter has a slip condition in which a torque magnifying, fluid coupling is interposed between the engine and the propulsion unit. The slip of the torque converter enhances acceleration of the boat by permitting rapid increases in engine speed and power through relieving propeller loading of the engine. The torque converter has a lock-up condition in which the input and output shafts are directly and mechanically coupled together to provide highly efficient, sustained speed operation of the boat. A control operates the torque converter between the slip and lock-up conditions. This control may be obtained responsive to operating conditions in the engine or torque converter, such as engine speed, torque converter slip, throttle position, intake manifold vacuum, and engine ignition advance.

Abstract: Clutch operation signal issued in operational association with depression of a clutch pedal are taken as answer-back signals into an electronic control unit (ECU), a starter start command signal is issued in response to one of these answer-back signals. Additionally, a clutch upper switch and a clutch lower switch, which constitute a clutch sensor and are connected in series to each other, are inserted into a starter relay driving system, so that start due to mistaken operation and the like of ECU can be avoided.

Abstract: A starting valve has a start fluid pressure regulating state and a complete engagement fluid pressure regulating state and supplies a regulated fluid pressure to a hydraulic clutch. A shift operating mechanism comprises a rod movable within a reduction ratio select range and an overstroke range. A complete engagement control valve has a spool operatively connected with the rod. When the rod is disposed within the reduction ratio select range, the complete engagement control valve renders the starting valve operable in the complete engagement fluid pressure regulating state, while when the rod is disposed within the overstroke range, the complete engagement control valve renders the starting valve operable in the start fluid pressure regulating state.

Abstract: A fluid coupling device is disclosed of the type including an input coupling member (11) rotatably disposed within an output coupling assembly (13). A portion of the output coupling assembly comprises a cover member (17) which cooperates with a housing member (15) to define an operating chamber (33), and cooperates with a cover member (35) to define a reservoir chamber (37). A cover member (17) also defines a pair of fluid inlet ports (51). A valve actuating member (55) is received in a central bore (53) defined by the input shaft (21). The coupling device includes a valving arrangement (57) including a U-shaped fulcrum element (59) and a flat, elongated valve element (61). The valve (61) passes through slots (69) in fulcrum portions (65) of the fulcrum element.

Abstract: A combine auger drive is operated by closing a switch which energizes a solenoid-operated valve which engages a hydraulic auger drive clutch. An electronic controller controls combine engine fuel delivery rate in response to sensed engine speed on throttle position via an electrically-operated, rack-controlled fuel pump. A summing unit modifies the rack position control signal when the switch is closed to increase fuel pumping rate when the auger drive is engaged.

Abstract: Device for selectively separating and connecting a rotatable shaft, such as the crankshaft of an internal combustion engine, to a flywheel assembly of a friction clutch has a bearing in which the flywheel assembly is rotatable relative to the shaft, a friction plate non-rotatably connected to the shaft and having friction surfaces disposed at the opposite sides thereof, two pressure plates forming part of the flywheel assembly and each having a friction surface cooperating with one of the friction surfaces of the friction plates, the pressure plate being axially movably but non-rotatably connected to each other and, one of the pressure plates being held against axial movement relative to the bearing, operating means for moving the other of the pressure plates axially, spring means disposed on the friction plate between the connection to the shaft and the friction surfaces disposed thereon for biasing the friction plate in direction away from the axially-fixed pressure plate, and stop means for limiting the ex

Abstract: A clutch actuator for use in a motor driven conveyor system includes an electrical motor and a conveyor driven by the motor with a clutch interconnecting the motor and conveyor in drive relation. The clutch actuator is responsive to motor current for actuating the clutch for selectively disconnecting the motor and the conveyor. A clutch actuator actuates the clutch, for disconnecting the motor from the conveyor, when the sense current is greater than a selectively adjusted predetermined value. The clutch actuator is selectively manually actuated for actuating the clutch for disconnecting the motor from the conveyor and selectively manually actuated for actuating the clutch for connecting the motor to the conveyor.

Abstract: A push rod extends through the main shaft of a change speed gear transmission to release a friction clutch on that shaft. The other end of the push rod is engaged by a hydraulic actuator. An oil seal assembly for the push rod is prevented from being damaged by leakage of hydraulic oil, and this is accomplished by means of an air gap and vent between the hydraulic actuator and the oil seal assembly.

Abstract: A control system for a belt-drive continuously variable transmission. The transmission is connected to a crankshaft of an engine through an electromagnetic powder clutch. The control system has a vacuum switch which is closed by rapid release of an accelerator pedal for producing engine braking effect, a gate circuit including a NOR gate, and an astable multivibrator. The NOR gate is opened for a short time decided by a time constant circuit, and the multivibrator supplies pulses through the NOR gate to a switching transistor provided in a circuit of the electromagnetic clutch for periodically opening the transistor during the opening of the NOR gate. Thus, the electromagnetic clutch is intermittently engaged for providing partial engagement of the clutch for the short time.

Abstract: A control lever assembly, particularly for controlling marine propulsion systems, having first and second signal outputs controllable simultaneously by a single lever. The lever is journalled for rotation about a lever axis relative to a body, and can be shifted axially between engaged and disengaged positions. An interrupter driver has driving engagement structure and responds to lever rotation and cooperates with the first signal output. An interrupter driven structure has driven engagement structure which is engageable with the driving engagement structure when the lever is in the engaged position, and is disengageable when the lever is in neutral and is shifted axially. When engaged, the second signal output is responsive to primary rotation of lever. Selector structure permits the axial movement only when the lever is in neutral, and simultaneously permits rotation of the lever to control the first signal output with no corresponding change in the second signal output.

Abstract: Apparatus is provided for manual control of a clutch in a motor vehicle having a manual gear shift control. The normal foot-pedal operation of the clutch is not impaired, and may be employed concurrently with the manual control system. Manual control is obtained by electrically switching a hydraulic pump, which in turn drives a cylinder and piston mechanically linked to the conventional clutch pedal. Additional switches are provided for disconnecting the pump when the clutch reaches its engaged or disengaged positions, and indicator lights are further provided to signal the driver when these positions are attained.

Abstract: A system for controlling an electromagnetic clutch of an internal combustion engine mounted on a vehicle, the clutch having a drive member secured to a crankshaft of the internal combustion engine, a driven member adjacent the drive member, and a magnetizing coil provided in one of said members, and a transmission secured to the driven member. A pulse generating circuit is provided for producing output pulses in dependency on the speed of the engine. An idling speed detecting circuit and a correcting circuit are provided for producing a correcting output when the idling engine speed increases which is caused when the choke valve or the air conditioning device of the vehicle is operated. Gate means is responsive to the output of the pulse generating circuit for producing an output which is applied to a switching transistor. The transistor is turned on by the output, so that clutch current passes through the magnetizing coil for engaging the clutch.

Abstract: A labeling mechanism is provided which utilizes a servo motor driven capstan to rapidly accelerate and decelerate label stock through the mechanism. Rapid acceleration is permitted because a secondary motor is provided to a label stock supply reel to reduce system inertia. Rapid deceleration is possible because a one-way bearing and clutch assembly is provided which prevents reverse motion of the label stock. A label shear is also provided which permits the use of continuous label stock rather than die cut, spaced labels.

Abstract: Drilling equipment for steering relatively long boreholes in rock strata comprises an adaptor for installation adjacent to the drill bit, the adaptor having an inner rotary component drivably connected between the drill rod assembly and the drill bit and a relatively outer component. Releasable latch means are provided having two operational modes in the first of which the inner and outer components are fixedly engaged for rotary motion and in the second mode of which the inner component can rotate relative to the outer component. Also actuatable means are provided for controlling the operational mode of the releasable latch means.

Abstract: A control assembly particularly for use in marine controls where a single lever thereof actuates a clutch and throttle of a marine power unit. The assembly has a first input shaft rotatable relative to a body thereof, and an extensible and retractable first output structure for controlling a function, e.g. the throttle. The assembly includes a cam mounted on the first input shaft for rotation therewith and a cam follower cooperating with the cam and the first output structure. A lever means cooperates with the body and cam follower so that the first output structure is actuated in an amount dependent on direction and rotation of the input shaft from an initial position thereof. In a preferred embodiment, a second output structure for the clutch is responsive to primary rotation of the input shaft from the initial position thereof and is unresponsive to secondary rotation, and the first output structure is unresponsive to primary rotation of the shaft and is responsive to secondary rotation thereof.

Abstract: A system for a four-wheel drive vehicle for automatically changing a power transmission system of the engine of the vehicle from four-wheel driving system to two-wheel driving system in accordance with the steering angle during the turning of a corner. The transmission system is provided for transmitting a power from the engine to main driving two-wheel, and a fluid pressure controlled friction clutch is provided for transmitting the power of the engine to two wheels other than the main driving two-wheel. A steering angle sensor is provided for producing a steering angle signal dependent on the steering angle. A control system is provided to respond to the steering angle signal for decreasing the pressure of the pressure oil applied to the clutch thereby to cause the slip of the clutch during the turning of the corner.

Abstract: A control system for an engine of an automotive vehicle equipped with a lock-up type automatic transmission.The engine control system comprises a gear ratio determinating circuit and a vehicle speed detector for determining whether the automotive vehicle is operating in a predetermined lock-up range or not and a logic circuit for generating a lock-up signal that indicates that the automotive vehicle is operating within said predetermined lock-up range, whereupon exhaust gas recirculation and ignition timing are varied from their ordinary patterns to a pattern suitable for operation of the engine with the torque converter operating in a lock-up state.

Abstract: A control system for a marine drive is shown which controls the inflation of ahead and astern clutches and an engine speed governor. Upon actuation of a throttle lever controlling a throttle valve, a selector valve is first actuated to operatively connect one or the other of the clutches to the control. Further movement of the throttle lever causes a relay valve to supply air at a pressure proportional to the throttle position to a main control valve which passes such air pressure to the selected clutch until a first control pressure is reached. Thereafter, air from the supply is supplied at a programmed rate to the selected clutch to continue inflation of the clutch until a second clutch pressure is reached whereupon a boost valve is actuated to connect full supply air pressure to the selected clutch.

Abstract: The speed (54, 56) of the free turbine (40) of a helicopter engine (20) is compared (103) with the speed (105, 106) of the helicopter rotor (10) to indicate (101, 102) autorotation, and the deceleration (108) of the rotor above a threshold magnitude (110) is utilized (81, 68, 69) to increase fuel flow (72) to the engine in anticipation of rotor speed droop which would otherwise occur during recovery from the autorotation maneuver.

Abstract: A vehicle includes a hydraulically operated multi-speed transmission controlled by a rotary pilot valve and pilot-operated shift valves. An electronic control unit generates electrical control signals for automatically controlling the transmission. A manually movable lever generates mechanical transmission control signals. An interface mechanism includes a sector gear which rotates the rotary valve in response to movement of the lever. A stepping motor rotates the sector gear via a torque-multiplying gear train in response to the electrical control signals. A rotary gear ratio encoder is rotatably cooupled to the rotary pilot valve and generates signals indicative of the actual gear ratio of the transmission.

Abstract: An improved mechanism is provided for selectively altering the positioning of an inwardly depressable, outwardly biased, shiftable structure, such as a splined shaft, and for releasably holding such structure in either of an inwardly depressed or an outwardly shifted position thereof. The mechanism is especially adapted for use with powered wheel, hub assemblies, such as commonly employed in combines or other normally self-propelled agricultural implements or the like, in which provision is to be made for disengaging the hub from an associated power shaft to permit towing of the implement at higher speeds than normal for field running thereof.

Abstract: A rotary fluid pressure device is described as comprising a housing having fluid inlet and outlet openings and in the housing is a gerotor device having an external stator having internal teeth and a rotor within the stator having external teeth, one less in number than those on the stator. The rotor is eccentrically mounted with respect to the stator so that upon rotation of the rotor, the sealing engagement between the external and internal teeth forms expanding cells on one side of the line of eccentricity and forms contracting cells on the other side of the line. A drive shaft concentric with the rotor has a hollow end within the housing and a solid drive end outside of the housing.

Abstract: The present invention relates to a speed control and indication system for a mechanical press. In order to enable the press to operate at its full running speed on the first cycle thereof after actuation of the clutch, the flywheel is driven at a speed higher than the set running speed so that as the mechanical inertia of the drive mechanism will cause the press to slow down to its set running speed. The control circuit modifies the speed control voltage after actuation of the clutch so that the press continues to run at the set speed even after the mechanical inertia is overcome. The signal from the tachometer to the speed meter is modified before actuation of the clutch so that it provides a reading at the set running speed of the press even though the flywheel is running at a higher speed. After the clutch is actuated, the true tachometer voltage is fed to the speed meter so that it continues to indicate the true running speed of the press.

Abstract: A power driven hammer drill has a tool impacting mechanism, a wobble unit for reciprocating the tool striking mechanism and having a drum member which can be releasably coupled with an intermediate shaft driven by a motor, wherein a switching device is provided outside of a hammer drill housing and arranged so as to disengage a coupling element of the intermediate shaft out of a coupling element of the drum member of the wobble unit against the action of a spring.

Abstract: A clutch arrangement for a motor vehicle having an internal combustion engine for driving the vehicle and a flywheel coupled between the vehicle transmission and the engine for equalizing the non-uniformity of the engine output torque. The clutch arrangement includes a main clutch arranged between the flywheel and the main transmission for interrupting the coupling for shifting gears and an auxiliary controllable clutch arranged between the engine and flywheel for automatically interrupting the coupling of the engine and flywheel. The controllable clutch comprises a spring disc clutch free from rotational play and is arranged so that the direction of force for actuating the main clutch, for interrupting the coupling between the flywheel and transmission, is opposed to the direction of the force for actuating the auxiliary controllable clutch.

Abstract: A freewheel device for connecting a power input to a selected one of a plurality of outputs so as to transmit rotary motion in one direction of rotation and to over-run when the speed of the selected one of the outputs exceeds that of the input, includes a neutral condition in which the input is rotationally disengaged from any of the outputs. In a described embodiment, the freewheel device comprises a plurality of rollers retained circumferentially adjacent one end of an axially movable shaft in operative association with a plurality of wedge-shaped portions formed on the shaft, axial movement of the shaft serving to engage the rollers between the wedge-shaped portions and, selectively axially spaced-apart internal, cylindrical surfaces formed on each of the outputs and on a rotatable support.The freewheel device finds particular application in the transmission system of multi-engined helicopters.

Abstract: A system is provided for fuel-efficiently operating an engine in a vehicle wherein the vehicle engine is coupled through a clutch to an infinitely variable ratio gear driving a planetary gear train. A clutch pedal actuates the clutch, and an accelerator pedal is coupled to the fuel delivery mechanism of the engine. A first storage unit is responsive to the position of the accelerator pedal and selects a stored value for the ratio of the infinitely variable ratio gear. A drive unit is provided for adjusting the ratio of the infinitely variable gear in response to the selected value from the first storage. A second storage unit is responsive to the position of the accelerator pedal and selects a stored value for a fuel delivery mechanism. A third storage unit is responsive to the position of the clutch pedal and selects a stored value for the fuel delivery mechanism. A comparison unit is coupled to the second and third storage units for selecting the smaller of the values for the fuel delivery mechanism.

Abstract: A clutch type torque control device characterized in that balls seated in ball receiving holes made in a main shaft are pressed against squarely planed-off surfaces made at the outer circumferential surface of a cam fitted to a driving shaft which is driven by an air driven motor through the medium of a spring and a cam ring for transmission of motive power from the cam to the main shaft and a stop pin inserted in the main shaft is engaged with a planed-off part made at the outer circumferential surface of a pilot pin slidably inserted in the cam, whereby when a torque load on the main shaft reaches a predetermined torque value the stop pin is disengaged from said planed-off part due to rotational difference between the cam and the main shaft and consequently a valve kept open through the medium of the pilot pin and a push rod is closed, resulting in the stopping of the motor.

Abstract: .[.Disclosed herein is.]. A throttle control for an engine including a housing supporting a control lever for rotation relative to a neutral position, a throttle lever movably mounted on the housing and adapted to actuate the engine throttle, a throttle drive member including a drive pin and mounted for rotation in response to movement of the control lever from the neutral position, and a cam member connected between the throttle lever and the throttle drive member. The cam member includes a cam track receiving the drive pin and having a shape effective to displace the cam member relative to the throttle drive member, transversely relative to the rotational axis of the throttle drive member, so as to move the throttle lever in response to rotation of the throttle drive member.