Abstract: A two-cycle internal combustion engine having two swash plate mechanisms with multiple pistons sets disposed therebetween. With each piston set including an opposed piston arrangement and wherein torque reaction to the output torque is transmitted to a housing of the engine through bevel gears and wherein major loads generated during engine operation are carried by a bearing arrangement.

Abstract: A two-cycle internal combustion engine having two swash plate mechanisms with multiple pistons sets disposed therebetween. With each piston set including an opposed piston arrangement and wherein torque reaction to the output torque is transmitted to a housing of the engine through bevel gears and wherein major loads generated during engine operation are carried by a bearing arrangement.

Abstract: An improved rotary shaft seal assembly is disclosed herein. The seal assembly is disclosed in combination with an example of transmission components with which it may be used. The assembly provides a rotary seal for fluid flow between a stationary cylinder and a shaft which rotates within the cylinder. The shaft includes a porting groove and seal grooves on each side of the porting groove. The seal grooves each include a cast iron and a polymeric (such as Teflon®) seal which form seals between the shaft and cylinder on both sides of the porting groove.

Abstract: A mechanical power transmission system for an engine or motor driven vehicle is disclosed. The transmission of the present invention includes an input transmission, a compound planetary transmission, and an output transmission. The compound planetary transmission includes two input and two outputs. The input transmission has a single input connected to the engine or motor of the vehicle and two outputs connected to the two inputs to the planetary transmission. The output transmission includes two inputs connected to the two outputs of the planetary transmission and one output connected through suitable gearing to the wheels of the vehicle or any other mechanism to be driven by a motoring device at various speed ratios.

Abstract: The row crop header for a harvesting machine includes a frame and a first row unit supported by the frame in a row unit plane. The first row unit includes a first gatherer operating in a first gatherer plane oblique to the row unit plane and a second gatherer operating in a second gatherer plane parallel to the first gatherer plane and oblique to the row unit plane.

Abstract: A hydro-mechanical transmission for an agricultural work vehicle is provided including a motor, a clutch and a differential assembly. The clutch which is rotatably supported by a housing includes first and second input shafts and a first output shaft. The first output shaft is configured to selectively couple to the first and second input shafts. The motor is coupled to the second input shaft, and the differential assembly which is rotatably supported by the housing is coupled to the first output shaft. The differential assembly includes a third input shaft coupled to the first output shaft, and a fourth input shaft coupled to the motor, and a second output shaft. The speed of the second output shaft is a combination of the speeds of the third and fourth input shafts.

Abstract: A hydraulically actuated brake assembly capable of rendering both a service brake function and a park brake function to a rotatable shaft that passes through a stationary housing. The brake assembly includes a series of wetted rotatable and nonrotatable brake members arranged in a stacked and intermixed relation within the housing and arranged coaxially about the shaft. The brake assembly further includes a service brake piston and a park brake piston for individually or conjointly applying a compressive force against the brake members thereby providing a braking action to the shaft and a park brake piston. The pistons are preferably arranged in axial alignment with each other and coaxially about the shaft. The service brake piston responds to fluid pressure being introduced into, a first fluid receiving cavity. The park brake piston is spring applied and is responsive to the fluid pressure introduced into a second fluid receiving cavity.

Abstract: A clutch assembly is provided for selectively establishing a drive connection between a pair of relatively rotatable members. The clutch assembly includes a series of interleaved plates operably effective when axially compressed to couple the rotatable members. A fluid pressure operated clutch actuator is provided for effecting clutch engagement and regulating the torque carrying capacity of the clutch assembly. The clutch actuator includes an annular clutch engaging face area. The present invention contemplates arranging a series of deflectable springs between the annular face area on the clutch actuator and the interleaved plates to provide a gradual deceleration of the clutch actuator during clutch engagement in a manner significantly reducing impact loading and associated torque peak to the clutch assembly.

Abstract: An indexing mechanism comprising a member adapted to be advanced a predetermined amount and along a predetermined path, a pair of spaced drivers, and a control valve for operating the drivers in an alternative manner. The member adapted to be advanced defines a profile surface including a plurality of spaced radial segments. Each radial segment includes a crown section which is joined to an adjacent crown section by two oppositely directed ramps defining a fillet radius therebetween. The spacing between the drivers being such that when one driver is urged against a crown section the other driver acts against a fillet radius. The drivers are operated by the control valve 180.degree. out of phase relative to each other. A driver, after moving off a crown section, coacts with ramp to impart a driving force to the member. The driving force being sufficient to move the member in an indexed fashion the predetermined amount of its movement.

Abstract: A hydraulic control system for a transmission including a speed transmission assembly, a range transmission assembly, and a hydraulically actuated master clutch for selectively coupling the transmission assemblies. The speed transmission assembly includes a plurality of hydraulically actuated clutch assemblies for effecting different forward output speeds and at least one reverse output speed. The range transmission assembly also includes a plurality of hydraulically actuated clutch assemblies. The control system includes a valve body connected to a hydraulic source of fluid pressure. A plurality of control valves are positioned in the valve body by an operator controlled shift lever. The control valves direct fluid pressure to various clutch assemblies in the speed and range transmission assemblies to condition the transmission into a forward, reverse, or neutral mode of operation as a function of shift lever position.

Abstract: A multi-speed powershaft transmission comprising a speed transmission assembly, a range transmission assembly, and a master clutch for selectively connecting the speed and range transmission assemblies. The speed transmission assembly includes a speed input section which is connectable to a driven powershaft and a speed output section which is connected to the master clutch. A cluster gear assembly interconnects the speed input and output sections. The speed input section includes two hydraulically operated clutch assemblies capable of producing two different forward input speed ratios. The speed output section comprises a plurality of clutch operated driven gear assemblies and is capable of producing at least three equally different forward output speed ratios and one reverse output speed ratio. Any of the plurality of driven gear assemblies included in the speed output section are engaged by powershifting through the pair of hydraulically operated clutch assemblies included in the speed input section.

Abstract: An actuating mechanism for a hydraulic control system including a valve body having one or more valves slidably arranged therein. Each valve is movable along a linear path in a manner regulating fluid flow through the valve body as a function of the linear position of the valve. The actuating mechanism includes a rotatable cam for selectively positioning each valve relative the valve body. Each valve is operatively connected to the cam such that each valve is positioned as a function of cam rotation. The cam is rotated about an axis extending substantially perpendicular to the linear path of each valve.

Abstract: A clutch assembly is provided in a tractor for selectively establishing and disestablishing a drive connection between a pair of relatively rotatable members. The clutch assembly includes a series of interleaved elements operably effective when axially compressed to couple the rotatable members of the tractor. A clutch actuator is provided for regulating the operable effectiveness of the clutch assembly. The present invention contemplates arranging the clutch actuator in a fluid receiving chamber provided in the driven rotational member. To effect these ends, the driven rotational member is arranged adjacent a stationary extension of a tractor housing. Fluid passageways are provided in such extension and in the driven rotational member for permitting a supply of fluid pressure to be transmitted to the fluid receiving chamber. Such passageway includes a rotating joint between the rotating member and the stationary extension.

Abstract: A shut off control system for the fluid activated clutches of a transmission is provided. The inventive control valve automatically shuts off hydraulic flow to the clutches whenever the engine of the vehicle is turned off. When the vehicle is restarted the clutch pedal must be depressed and released before fluid can again activate the clutches. With the inventive control system, the vehicle can be started in any gear but the vehicle will not move until the clutch pedal is depressed and released by the vehicle operator.

Abstract: A hydraulically-operated clutch assembly is disclosed having an improved lubrication arrangement therefor. The assembly includes a shaft-mounted drum-like clutch carrier, and an adjacent transmission gear. The assembly further includes a plurality of clutch friction plates mounted on and operatively connected to the gear, and a plurality of clutch separator plates arranged in an alternating array with the friction plates, with the separator plates coupled for rotation with the clutch carrier. The lubrication arrangement includes means for supplying pressurized lubricant to the interface between the clutch friction plates and the associated gear, and means for inhibiting lubricant flow out of the assembly whereby the service life thereof is significantly enhanced.

Abstract: The control system is provided for the High-Low clutches of a High-Low powershift transmission. The control system functions in a manner to prevent simultaneous engagement of the separate clutches. The control system also provides a phased disengagement of the outgoing clutch to provide for smoother shifting when changing gear ratios.

Abstract: The present invention provides a control system for the master clutch of a powershift type transmission of a motor vehicle. The inventive control system provides a manually controlled, fluid activated clutch with a high pedal force requirement with initial engagement, and a low pedal force requirement for operating the clutch in the inching mode. The inventive clutch control utilizes the hydraulic fluid pressure activating the master clutch to help the operator actuate the clutch pedal. The inventive master clutch control system also allows for smooth engagement of the master clutch when the clutch pedal is suddenly released.

Abstract: Crawler tractor adapted for stepless hydromechanical steering by driving. The power train terminates in a novel hydromechanical steering differential delivering its output to an oppositely extending pair of axles at the sides of the tractor, and forced by a differential lock in a straight line locked, primary steering condition thereof to drive the axles at a mechanically fixed 1:1 drive ratio therebetween and, secondarily, forced into differentiating by a variable displacement crossfeeding pair of axle-interconnecting hydrostatic pump/motor units during all turns so as to selectively drive either axle only at some hydrostatically fixed reduction drive ratio to the other.

Abstract: Crawler tractor adapted for stepless hydromechanical or electromechanical steering by driving. The tractor, in which opposite axles have interposed solid axle steering drive means, is steered by means of clutches disposed one between the drive means and each axle for primary mechanical drive, and a secondary variable ratio hydrostatic bidirectional drive interconnecting the axles.

Abstract: A hydro-mechanical transmission for an agricultural work vehicle is provided including a motor, a clutch and a differential assembly. The clutch which is rotatably supported by a housing includes first and second input shafts and a first output shaft. The first output shaft is configured to selectively couple to the first and second input shafts. The motor is coupled to the second input shaft, and the differential assembly which is rotatably supported by the housing is coupled to the first output shaft. The differential assembly includes a third input shaft coupled to the first output shaft, and a fourth input shaft coupled to the motor, and a second output shaft. The speed of the second output shaft is a combination of the speeds of the third and fourth input shafts.