Abstract: A power transmission device of a motorcycle comprising a main transmission case formed integrally with an engine crank case and accommodating a main transmission, and a sub-transmission case provided at the rear side of the main mission case. The sub-transmission case accommodates a sub-transmission which is drivingly connected to the main transmission and also to a rear wheel of the motorcycle through a transmission mechanism. The transmission mechanism and the sub transmission are disposed at opposite sides of the rear wheel. The sub-transmission case is composed of a case body and a cover for covering an opening of the case body. The opening is formed at a lateral side of the gears of the sub-transmission so that the gears are accessible and replaceable by removing the cover from the opening.

Abstract: A combination creeper gear and control system for a transmission is disclosed having a range selector gear followed by a change speed gear. The combination includes an engine-driven drive shaft connected through a creeper gear mechanism to an input shaft which extends into the transmission. The creeper mechanism includes a drive gear mounted on the drive shaft, a driven gear mounted on the input shaft and a lay shaft aligned parallel to both the drive shaft and the input shaft. The lay shaft supports a compound gear which includes a first and a second gear, wherein the first gear meshes with the drive gear and the second gear meshes with the driven gear. The combination further includes a synchronizer located between the drive gear and driven gear which is selectively engageable between a direct mode and a creep mode. In the direct mode, the drive shaft is directly connected to the input shaft, while in the creep mode, the drive shaft is connected to the input shaft by way of the compound gear.

Abstract: An agricultural tractor comprising differential case, a transmission case, a speed change case interposed between the two cases and directly coupled thereto, and a speed change mechanism contained in the speed change case and adapted to provide a great reduction ratio. The speed change case is not integral with the two other cases.

Abstract: An overdrive mechanism having offset input and output shafts permits a motor vehicle to be operated in an overdrive gear in a two wheel drive mode. A lockout prevents concurrent operation of the vehicle in overdrive and four wheel drive. The overdrive is arranged to reduce the magnitude of cyclic loading in single cardan universal joints transmitting engine torque through an angle.

Abstract: A transmission interlock for use in a motor vehicle transmission having at least two gear ratio selection means in tandem within a common housing. The transmission interlock includes an auxiliary shift rail parallel to and spaced from two operative shift rails which it interlocks. The auxiliary shift rail is linked to one of the two shift rails and translates positively therewith. An interlock member transversely disposed between the auxiliary shift rail and the second of the two shift rails interacts with slots or blind apertures in the shift rails to prevent selection of certain combinations of shift rail positions corresponding to prohibited gear ratio combinations.

Abstract: A power transfer case for a four wheel drive land cruiser is altered to provide overdrive capability. A main drive gear is journaled for rotation about a main drive shaft driven by the vehicle transmission system. The main drive gear includes an axially extending hub section. A direct drive gear is splined onto the main drive shaft, as is an overdrive driving gear. An overdrive idler gear provides a mechanical speed advantage and is engaged with an overdrive driven gear that is journaled for rotation about the main shaft. A shift collar is splined in continuous engagement with the hub section of the main drive gear, and is longitudinally shifted to alternatively effectuate splined engagement with either a direct drive gear or with an overdrive driven gear. The vehicle is provided with four wheel overdrive drive capability without axial relocation of any of the major structural drive line supports or assemblies.

Abstract: A shift control for a compound change speed gear transmission of the range type which provides two separate sets of shift paths (A and B), one for each range of the auxiliary transmission, and individual positions in each shift path for selection of individual ratios in the main transmission. The control comprises at least two parallel axially slidable shift rods (11, 12 and 13) and a transverse cross shaft (14) which is axially and rotationally movable. Each shift rod (11 and 12) defines at least two axially spaced pairs of faces (16a, 16b, 17a and 17b) which pairs are axially spaced apart for selective engagement by a selector finger (15) carried by the cross shaft. At least one of the pairs of faces (16a, 16b, 17a and 17b) on each shift rod is disposed between the pairs of faces carried by the other shift rod.

Abstract: An agricultural tractor transmission to which various attachments may be removably affixed as necessary. Such attachments include a super reduction device and a pump for actuating a work implement.

Abstract: Apparatus is disclosed wherein a starter provides power for starting an engine and the starter gearing and an overrunning clutch are arranged so that the engine drives an accessory coupled to the starter by using particular elements of the starter gearing while other elements of the gearing come to rest, thereby eliminating separate drive means between the starter and accessory.

Abstract: A mechanical transmission (10) is disclosed which utilizes a plurality of sets of rollers (94-104) with associated rotating discs (74, 152, 170 and 196). The rollers (94-104) are ellipsoidally shaped with concentric rows of teeth thereon. The associated discs (74, 152,170 and 96) have concentric rows of holes aligned for receiving the roller teeth. The rollers (94-104) are caused to tilt about a center shaft (88) by a control link (216) to engage various of the rows of teeth on the rollers (94-104) with the associated discs (74, 152, 170 and 196). Tilting of the rollers (94-104) in differing directions to differing degrees produces varying input to output drive ratios.

Abstract: A transaxle transmission includes a casing with axially aligned output shaft extensions extending through end walls thereof. An input shaft extends through a casing side wall and is generally perpendicular with respect to the output shaft. Selectively actuable change speed gearing is drivingly connected to the output shaft for selectively providing predetermined forward and reverse gear ratios, and a manually actuable element is coupled to the change speed gearing for shifting the same. An intermediate shaft is provided in spaced, parallel relationship with the input shaft and is drivingly connected to the change speed gearing. Second selectively actuable change speed gearing drivingly connects the input shaft to the intermediate shaft to provide high and low speed reduction ratios between the input and intermediate shafts, and another manually actuable element is coupled to the second change speed gearing for shifting the same.

Abstract: A transmission apparatus for motor vehicle in which the engine is positioned in front side of the front axle, a sub-transmission is provided in the space formed above the front axle, and a main transmission is adapted to transmit the ouptut of the sub-transmission to the front wheels through means for transmitting the output.

Abstract: In a vehicle having separate front and rear transmissions, a system for slaving one of the transmissions to the other so that the slave transmission will operate in the same drive range as that existing in the master transmission. Low-level binary coded signals are separately generated by each transmission to indicate the existing drive ranges of the two transmissions. The signals are sent to a control unit where they are examined and used to shift the slave transmission up or down as necessary, so that it keeps in step with the drive range in which the master transmission is operating. A unique binary code is used in the sending of drive-range signals to the control unit to prevent the control unit from shifting the slave transmission in response to errors in the signals which may occur in the event of faults in the cables through which the signals are sent.

Abstract: A variable speed transmission device of the type in which a first rotatable element is in rolling friction engagement with a second nutatable element having an axis movable in a biconical path about the axis of the first elements. The first element supports a pair of axially movable cone-like members fixed for rotation with the first element and each having exterior surfaces of revolution defined by a curved generatrix to be convex in axial section and converging away from the point of first and second element axes intersection. The rolling friction surfaces of the second element are defined by an interior cyclindrical surfaces and means are provided for adjusting the angle of the second element axis with respect to the first to vary the radii at the point of frictional contact on the cone-like members.

Abstract: An auxiliary transmission having a three-clutch input operating through selective multiple countershafts including a carrier supporting the countershafts angularly spaced around the output shaft which is rotatably supported centrally within the carrier. The auxiliary transmission multiplies the speed ratios of the main transmission to multiply the overall power train speed ratios and/or provide forward and reverse power shifting for the gear train as so desired.

Abstract: A compact manual transmission includes an input shaft and plural countershafts, one of which serves as the output shaft and the other of which serves both as a countershaft for obtaining a low reduction ratio forward drive and as a reverse idler shaft. Low forward drive is through a gear train comprising three reduction ratio gear sets controlled by a single clutch. Reverse drive is through two reduction ratio gear sets controlled by a single clutch. The transmission is particularly adaptable for use in an automotive vehicle having a transversely mounted engine. The transmission is further adaptable for direct connection with the ring gear of an associated differential, such as in a front-wheel drive vehicle.

Abstract: A transmission constructed in groups with shiftable clutches to vary the ratio and the direction of the drive and including clutches shiftable under load. The arrangement of the clutches shiftable under load is such that a selective shifting under load from forward to rearward drive or from slow forward drive to fast forward drive, and vice versa, will be possible after preselecting a forward or a reversing transmission.

Abstract: A variable speed semi-automatic transmission system is adapted for use in maximizing vehicle speed and torque output obtainable from a small or low horsepower engine. The system includes in combination a belt type torque converter properly matched with the engine, a transmission having at least two forward speeds, and an over-riding clutch employed to selectively couple the torque converter with the transmission.

Abstract: The transmission assembly comprises a gearbox in series with countershafting providing two gear ratios.In order to allow an easy adaptation of the countershafting to a conventional gearbox and allow a change in the gear ratio of the countershafting while the vehicle is in motion, there is provided in the control mechanism of the countershafting a delay device. This device stores energy corresponding to changes in the position of a gear pre-selecting lever associated with the countershafting so long as the change gear lever of the gearbox is in a position in which a gear ratio of the gearbox is engaged. This device restores the energy as soon as the change gear lever is brought to its neutral position and allows the pre-selected gear of the countershafting to be engaged.

Abstract: A drive system for a vehicle includes a fluid pump which drives a fluid motor which in turn drives a variable speed transmission of the type including an input toroidal disc, an output toroidal disc, and wheel means rollingly connecting the input and output discs, with the output disc being used to drive the vehicle.

Abstract: A transfer case assembly is disclosed as comprising two output shafts rotatably supported within the transfer case housing in a coaxially relationship and connected to the output hubs of a two-way roller clutch. The transfer case input shaft is rotatably supported within the housing in a parallel relationship to the output shafts. A chain drive sprocket is rotatably mounted on the input shaft directly coupled to the two-way roller clutch by an endless drive chain.

Abstract: A transmission for connecting a prime mover with a load, such as vehicle wheels, in which the transmission is of group construction with a primary group shiftable under load and at least one other group which is not shiftable under load. The group shiftable under load provides for at least two forward speeds and a reverse speed at the main output shaft of the transmission which supplies the power to the load.

Abstract: A multiple input and preferably multiple output transmission for industrial, commercial and other vehicles includes axially aligned input and output shafts, a single aligned countershaft, first, second and third input gears, a plurality of foward output gears with one of the forward output gears also being capable of serving as one of the input gears. First, second and third driven countershaft gears are in constant mesh with respective ones of the input gears, and each one of a plurality of driving countershaft gears is in constant mesh with a separate one of the forward output gears, with one of the driving countershaft gears also being capable of serving as one of the driven countershaft gears. Multiple clutch means are utilized for selectively drivably connecting the countershaft with one of the input gears and for selectively drivably connecting the output shaft with the countershaft. A reverse-idler shaft together with its associated gearing provides for a plurality of reverse speeds.

Abstract: A countershaft transmission having an input shaft selectively driving a clutch carrier connected to the output shaft by selective drive through direct drive and through countershaft driven quill shafts to the clutch carrier.

Abstract: A gear changing system is disclosed for changing the gears in one or more automotive or truck transmissions of the mechanical type. Each rail or equivalent linkage for supporting and moving the gear changing fork is connected to the operating shaft of a fluid actuated cylinder assembly which has fluid ports connected to a plurality of control valves. The valves are connected, on one side, to a source of fluid under pressure, preferably pneumatic, and on the other side are vented to a reservoir or the atmosphere. An electrical or electropneumatic control system controls the operation of the valves, the control system including a push button selector which chooses a shift gear ratio to be attained. The push button assembly first operates a "neutral" valve which causes the cylinder means to move each shift rail to neutral.

Abstract: The power train between the engine and drive wheels of a motor grader, for example, comprises a normally engaged main engine clutch, a high-low power shift range transmission, and a four speed reversible power shift main transmission. The main engine clutch is releasable manually by a clutch pedal or releasable automatically by a hydraulically operated clutch release cylinder. The range transmission is shiftable into high or low by supplying hydraulic fluid to power shift clutches therein. The main transmission is shiftable into forward, reverse or neutral by manual operation of a direction selector valve. The main transmission is also shiftable into each of its speed ranges by axially moving the spool of a speed selector valve. The spool of the speed selector valve is axially movable into four positions by a hydromechanical linkage comprising three hydraulic shift cylinders.

Abstract: Arrangement for controlling the shifting between two gear ratio ranges in a gear box for motor vehicles, said gear box comprising a main gear box with a number of gear ratios and a two-geared range gear box, coupled to the output shaft of the main gear box, the range gear box having such gear ratios that the total gear ratio of the gear box with the highest ratio in the range box and the lowest ratio in the main box is higher than that with the lower ratio in the range box and the highest ratio in the main box. The shifting in the main box is controlled by a manually operated gear lever and the shifting in the range box by a servo aggregate.