Abstract: A step-by-step ratchet mechanism has a mount, a hand lever carried on the mount and pivotable about an axis, and a ratchet provided with a toothed set wheel and with an output shaft rotatable about an axis of the ratchet in the mount. Two catches are provided, which a) are each hinged on the hand lever and are pivotal around an axis of the catch, b) are each provided with a toothed quadrant with several teeth that cooperates with the set wheel, c) have a supporting flank that neighbors an abutment of the mount and d) are provided with a spring pretensioning the two supporting flanks towards the abutment. Two mean position levers are carried on the mount and are each pivotal about an axis of the mean position levers, one mean position lever being assigned to each catch. The mean position levers have a stop flank.

Abstract: A control system for controlling a power takeoff shaft of a work vehicle having a hitch includes a hitch position sensor and a control circuit. The hitch position sensor is configured to generate a hitch position signal. The control circuit is coupled to the hitch position sensor and is configured to receive the hitch position signal, to compare the hitch position signal to a first predetermined hitch position and a second predetermined hitch position, to engage the power takeoff shaft when the hitch crosses the first predetermined hitch position and to disengage the power takeoff shaft when the hitch crosses the second predetermined hitch position.

Abstract: An integrated drive arrangement for a vehicle propulsion system for transmitting vehicle drive torque and for independently driving external implements. The drive arrangement includes a power input shaft having a number of axially spaced drive gears and being driven by a prime mover. The pump shaft of a variable displacement pump is drivingly connected with one of the drive gears of the power input shaft. A fixed displacement motor is connected in closed circuit to the variable displacement pump. A number of drive pinions are spaced axially along an intermediate shaft which is spaced from the power input shaft and are connected to the intermediate shaft and the power input shaft by an electromagnetic clutch. First and second power take-off shafts are drivingly connected with the intermediate shaft such that the power input shaft imparts independent rotation to the power take-off shafts and the pump shaft.

Abstract: Several embodiments of snowmobiles driven by an engine and variable belt transmission mechanism wherein the variable belt transmission has its input shaft journaled for rotation in the crankcase of the engine and driven from the engine crankshaft through a gear reduction so that the transmission loads are not carried by the crankshaft and wherein the crankshaft torsional vibrations are not transmitted to the transmission input shaft.

Abstract: Several embodiments of power units particularly adapted for transverse engine operation for driving the wheels of a motor vehicle. In all of the embodiments, the axles are disposed on one side of the engine and a change speed transmission is located on the other side of the engine. The change speed transmission is driven from a gearing arrangement located between the ends of the crankshaft and in some embodiments torsional vibration dampers are included in the drive for the change speed transmission. Vibration dampers are affixed to one or both ends of the crankshaft in some embodiments and an auxiliary shaft is driven from the transmission primary shaft for operating the camshafts of the engine.

Abstract: A speed change lever apparatus for use in a bicycle. The apparatus has a winding member for winding up a speed change control cable and a cable-pulling lever operable to pull the cable by causing the winding member to pivot only in a cable winding direction. The cable-pulling lever returns to its home position after completion of speed change operation. The improved apparatus includes a position maintaining mechanism for stepwisely maintaining a position of the winding member and a release lever operable to release the position maintaining mechanism. The release lever also returns to its home position after completion of release operation. At the respective home positions, the cable-pulling lever and the release lever are operable in substantially same directions to enable a cyclist to disregard the direction of lever operations. Further, the home positions of the levers are disposed at different yet adjacent locations relative to a direction normal to the lever operating directions.

Abstract: A power transmission system in a tractor having a travelling drive sub-system for driving wheels and a PTO drive sub-system for driving working machines. A transmission case is provided with a single input shaft connected to an engine, and the travelling drive sub-system and the PTO drive sub-system are respectively led out from the input shaft separately. The travelling drive sub-system is connected to the input shaft via a main clutch, and is composed of a multi-stage speed-changer having a plurality of speed-changer clutches. The PTO drive sub-system is connected to the input shaft via a PTO clutch that is different from the main clutch, and at the rear portion of the PTO drive sub-system is provided a power transmission switching apparatus which can selectively transmit power to a plurality of PTO shafts.

Abstract: The present invention provides a simple and compact power transmission mechanism for a tractor or similar vehicle having mounted thereto a mechanical attachment such as a lawn mower. The power transmission mechanism includes an engine which transmits driving power to ground engaging wheels through a driving power transmission unit and to the mechanical attachment through a driving speed changing unit positioned atop the transmission unit and operatively interconnected to the drive shaft thereof. The driving speed changing unit includes an input shaft which receives engine driving power for driving the drive shaft through a differential gear unit. Engine power is transmitted to the attachment through a belt from a power take-off unit coupled to the input shaft.

Abstract: A transmission system for a vehicle comprising a dry type clutch mechanism, a propelling line for driving ground engaging wheels, and a PTO line. The clutch mechanism includes a drive member connected to an engine output shaft, and a clutch plate movable into and out of friction engagement with the drive member. The propelling line includes an input shaft connected to the drive member, a shuttle shift mechanism having at least one oil clutch for establishing and breaking drive transmission from the input shaft, and a change speed mechanism for receiving drive from the shuttle shift mechanism. The PTO line includes a PTO line input shaft connected to the clutch plate of the dry type clutch mechanism.

Abstract: A transmission for a tractor, in which a hydraulic working machine lift is mountable at the position lower than the conventional, on the upper surface of a mission case so that an operator cab is lowered to that extent, whereby a high and low transmission unit, a multistage transmission unit and a PTO transmission unit are entirely disposed before a bearing wall of the mission case, a rear portion thereof housing therein a diff gear unit is depressed, and the hydraulic working machine lift is loaded on the depressed portion. Also, a rear axle housing is reduced in length not to largely laterally project and a disk brake device is used to simplify the structure.

Abstract: A transmission for a tractor comprising a propelling line for transmitting an engine output to drive wheels, and a power takeoff line for transmitting the engine output to a working implement attached to the tractor. The transmission further comprises a torque converter including a casing connected to an engine output shaft and an input shaft of the propelling line, and a turbine liner and a lockup clutch connected to an input shaft of the power takeoff line. The propelling line includes a first hydraulic clutch for transmitting the engine output in forward rotation and a second hydraulic clutch for transmitting the engine output in backward rotation, engine output transmission through the propelling line being broken when the first and second hydraulic clutches are disengaged. The power takeoff line includes a power takeoff hydraulic clutch, and a power takeoff gear disposed upstream of the hydraulic clutch for driving hydraulic pumps attached to a transmission case.

Abstract: A self-contained remotely actuated power take-off assembly for front mounting to an engine. A sump containing hydraulic fluid is contained within the power take-off housing to supply hydraulic fluid by a gerotor pump connected to the output shaft supplying fluid under pressure to a piston and cylinder hydraulic actuator. A friction disk clutch operatively engages a gear train between the input and output shaft when acted upon by the piston. A remotely operated solenoid valve located between the pump and hydraulic cylinder is used for such actuation.

Abstract: A transmission for a tractor in which a forward-reverse change mechanism M3 is disposed between a first change speed mechanism M1 and a second change speed mechanism M2 and to the first change speed mechanism M1 a PTO countershaft 34 and a PTO shaft shaft 32 connected thereto are operatively connected. A drive shaft 47 for front wheels is operatively connected to the second change speed mechanism M2. A rotational power is transmitted to a mid-PTO shaft 39 from the PTO countershaft 34 via a gear 50 which is mounted freely and rotatably on the drive shaft 47 for the front wheels.

Abstract: An adaptor plate assembly for use in interfacing a transmission gear housing having a standard bolt/hole pattern with a power takeoff unit having a non-standard bolt/hole pattern is disclosed. An adaptor plate is positioned between the gear housing and the power takeoff unit. The adaptor plate has passageways in alignment with standard apertures in the gear housing and with openings in the power takeoff unit. Guide and support fasteners having guide heads are initially positioned in ones of the passageways of the adaptor plate and in the housing apertures. The power takeoff unit is initially guided and supported by the guide heads. Securement fasteners are then used to complete the connection of the power takeoff unit to the adaptor plate and the gear housing.

Abstract: A power take-off arrangement for a vehicle four-wheel drive transfer case. The transfer case housing end wall supports an annulus gear concentrically about the input shaft. The input shaft terminates in an end axial flange portion defining a sun gear of a helical planetary gear assembly. The inboard carrier ring includes peripheral power take-off gear teeth. The carrier rings are journalled on the opposed shoulders of the end axial flange portion. The carrier ring peripheral gear teeth are adapted to mesh with a power take-off input gear extending through an aperture in the housing side wall providing power take-off when the transfer case is driven in any of its various driving modes.

Abstract: The intermediate case for turbo fan engines has a bearing support cone extending forwardly from the support flange in alignment with the struts in the case to provide a secure support for the #2 bearing for the low pressure shaft. To accommodate the power shaft assembly which extends through the cone the latter has a bulge in which is mounted the support cylinder for the bearings for the power shaft, this bulge providing a support structure for the cylinder and clearance for a bevel gear on the power shaft journaled in the cylinder.

Abstract: The present invention provides a speed control system for use in maintaining the rotational speed of an output shaft of a power takeoff unit within a predetermined range. A central control unit receives signals indicative of the speed of the input gear and, in response to the received signals engages and disengages the output shaft of the power takeoff unit. The central control unit also disengages the output shaft if the system's voltage levels drop below a preset minimum.

Abstract: A multi-speed transmission (4) driven by an engine (1) and is connected to drive an intermediate gearbox (16) that drives an axle drive (17). To obtain creep speed drive, a motor-dependent P.T.O. shaft (14) drives upon a variable displacement pump (18), which is connectable to a hydromotor (22) through pipes (20, 20A and 21, 21A). When the clutch (26) is connected and in the neutral position of the variable gear (2), the hydromotor (22) acts upon an output shaft of intermediate gear box (15) that in turn drives the axle drive (17). When changing to a garbage pressing operation in the stationary state of the vehicle, the variable displacement pump (18) is shifted by a change-over valve (28) to drive the pressing cylinder of the accessory hydraulic power system (30).

Abstract: A power take-off device comprising a housing having spaced walls, an input shaft rotatably mounted in a first set of aligned openings in the walls, and an output shaft rotatably mounted in a second set of aligned openings in the walls. A pair of gears is interposed between the walls and rotatably mounted on the input shaft. The housing having an opening through which said one gear extends for engagement with a power source. A third gear is fixed on the output shaft and meshes with the teeth on the other gear. The first and second gears have annular gear portions and an annular clutch member having teeth engage a gear portion of one of the first and second gears to a position wherein said internal teeth engage the gear portions of both first and second gears. The clutch member is moved by a mechanical shift mechanism.

Abstract: A power take-off device comprising a housing having spaced walls, an input shaft rotatably mounted in a first set of aligned openings in the walls, and an output shaft rotatably mounted in a second set of aligned openings in the walls. A pair of gears is interposed between the walls and rotatably mounted on the input shaft. The housing having an opening through which said one gear extends for engagement with a power source. A third gear is fixed on the output shaft and meshes with the teeth on the other gear. The first and second gears have annular gear portions and an annular clutch member having teeth engage a gear portion of one of the first and second gears to a position wherein said internal teeth engage the gear portions of both first and second gears.

Abstract: PTO-driving of a double-clutch-incorporated type transmission characterized in that the PTO-driving comprises a first gearing mechanism interlocking with a PTO main shaft, a second gearing mechanism interlocking with a running-travel main shaft, and a coupling means functioning to selectively drivably couple the said gearing mechanisms with a PTO transmission shaft.

Abstract: A transmission is mounted transversely in an agricultural or construction vehicle with a chassis frame. The transmission components are arranged substantially on two main shafts which are parallel, one to the other, and transverse to the engine input shaft. The drive runs, on the engine side, through a bevel gear drive. The transmission housing is formed of two shells and the plane of the joint therebetween contains the axial centerlines of the main shafts.

Abstract: A front power take-off for tractors. A drive pinion shaft provided in a differential mechanism for driving the front wheels is positioned in the center of pivotal movements of a front axle housing a front working power out-put shaft and a front wheel drive power input shaft for driving a drive pinion are disposed so that the axes of these power shafts are under and on the right and left sides of the drive pinion shaft, and two transmission shafts disposed in right and left portions of a lower section of a transmission case connect drive mechanisms provided in said right and left portions of the lower section of the transmission case to the power shafts. The rotary power taken out from the transmission case is transmitted by the transmission shafts to their respective front power take-off portions at a high speed without these shafts vibrating.

Abstract: An assembly for joining together two splined shafts adapted to facilitate angular alignment of the splines relative to each other wherein one of the shafts is a splined hub having an opening formed in the wall thereof within which a ball is held with a given degree of play to enable rotation thereof, the center of the opening being in an axial plane with the center of one of the splines of the splined hub. The axial distance between the centerline of the opening and an end of the splined hub is identical to or greater than the axial length of a centering cylindrical surface formed between the splined hub end and the termination of the splines within the splined hub.

Abstract: A ratchet drive comprises a support on which a ratchet gear is mounted turnably about a first pivot axis. A lever is mounted on the support tiltable about a second pivot axis spaced from and parallel to the first pivot axis between a forward stroke and a return stroke. A pair of drive pawls are mounted at one of the ends thereof on the lever tiltable about axes located spaced from and respectively to opposite sides of the second pivot axis and engaging with the other end thereof the ratchet gear, so that when the lever is moved along its forward stroke, one of the drive pawls will engage a tooth of the ratchet gear to turn the latter in one direction while the other pawl moves rearwardly over a tooth and so that during the return stroke the other pawl engages a tooth of the ratchet gear to turn the latter in the same direction while the one pawl moves rearwardly over a tooth.

Abstract: The present invention provides a speed control system for use in maintaining the rotational speed of an output shaft of a power takeoff unit within a predetermined range. A central control unit receives signals indicative of the speed of the input gear and, in response to the received signals engages and disengages the output shaft of the power takeoff unit. The central control unit also disengages the output shaft if the system's voltage levels drop below a preset minimum.