Abstract: Disclosed is a pulley having: a shaft; a first shroud, called the fixed shroud, mounted so as to be unable to move in translation with respect to the shaft; a second shroud, called the movable shroud, mounted to be driven in rotation by the shaft but is able to move longitudinally with respect to the latter; a mechanism for mechanically controlling the longitudinal movement of the second shroud with respect to the shaft, having: —a first assembly, which is mounted on the shaft and driven in rotation by the latter, —a second assembly, which is mounted on the shaft by way of at least one torsion spring such that the relative angular position of the second assembly with respect to the shaft depends on the torque transmitted by the shaft, and —a device for locking in at least one position between the first assembly and the second assembly.

Abstract: A locking mechanism for locking a driveshaft in cooperative engagement with an apparatus includes a drive portion coupled to the driveshaft and a driven portion coupled to the apparatus. The drive portion of the locking mechanism includes a housing with a first engagement portion, a ball cage with a plurality locking balls contained at least partially therein, and a chock biased away from the housing by a chock spring. The chock includes an outer wall configured to push the locking balls outward in a locked position and allow inward movement in an unlocked position. Movement of the chock, and therefore locking, is controlled by an actuator rod extending through a center of the locking mechanism. The driven portion includes a second engagement portion configured to cooperatively engage and receive torque from the first engagement portion, and a locking groove configured to receive a portion of each of the plurality of locking balls therein.

Abstract: A system for a self-propelled vehicle with variable travel speed, such as a mowing tractor, includes, between the primary driving shaft of the vehicle and an output shaft, such as the wheel drive shaft of the vehicle, at least one controlled variable speed drive with a belt and controlled mechanism for reversing the direction of travel of the vehicle, the primary driving shaft transmitting, via the variable speed drive, its motion to the input shaft of the reversal mechanism, itself able to directly or indirectly engage the output shaft, such as the wheel drive shaft of the vehicle, in such a way as to allow the vehicle to travel forward or in reverse respectively, at a variable travel speed. This transmission system is characterized in that the variable speed drive and the mechanism for reversing the direction of travel of the vehicle are controlled selectively from the same control device.

Abstract: A continuously variable transmission (“CVT”) is disclosed. The CVT includes a drive pulley adapted to connect to a crankshaft of an engine. The drive pulley has inner and outer halves with belt engagement surfaces to engage the sides of the belt. The drive pulley of the CVT also includes a slide sleeve disposed on the shaft adapted to engage an inner side of a belt. The inner and outer halves of the drive pulley are biased apart from one another by a spring. The slide sleeve engages the belt when the belt is stationary or traveling at low speeds. The driven pulley includes inner and outer halves with belt engagement surfaces. The two halves are biased into contact with one another. A connector connects the inner half to the outer half. In addition, a pneumatically-actuated driven pulley is described together with a CVT incorporating same.

Abstract: A variable speed transmission includes an actuator mechanism that can be remotely activated to cause engagement of a drive unit and to subsequently vary the speed of the drive unit using the same activation mechanism. The variable speed transmission can include a first pulley that has a first and second face that are movable relative to each other by activation of the actuator mechanism. When the first and second faces of the first pulley are located in a first position, a belt located on the first pulley remains motionless. The first and second faces can be moved by the actuator mechanism into a second position where the first and second plates engage the belt with enough frictional force to cause the belt to start moving about the first pulley. The first and second faces of the first pulley can also be moved between the second position and a third position such that the space between the faces becomes smaller.

Abstract: A variable speed transmission includes an actuator mechanism that can be remotely activated to cause engagement of a drive unit and to subsequently vary the speed of the drive unit using the same activation mechanism. The variable speed transmission can include a first pulley that has a first and second face that are movable relative to each other by activation of the actuator mechanism. When the first and second faces of the first pulley are located in a first position, a belt located on the first pulley remains motionless. The first and second faces can be moved by the actuator mechanism into a second position where the first and second plates engage the belt with enough frictional force to cause the belt to start moving about the first pulley. The first and second faces of the first pulley can also be moved between the second position and a third position such that the space between the faces becomes smaller.

Abstract: An agricultural forage box includes an infinitely positionable variable speed drive system and an improved trip mechanism. The variable position drive system utilizes a drive belt for driving the floor conveyor of the forage box, which is driven in response to rotation of a pair of sheave sections. One of the sheave sections can be moved relative to the other, and a sheave positioning mechanism provides adjustment in the position of the movable sheave section. The variable position mechanism includes a yoke which is movable in response to operation of an actuator plate and linkage mechanism, which in turn is interconnected with a control lever. The improved trip mechanism includes a trip bar mounted to the forage box for pivotal movement about its longitudinal axis. A trip lever is located adjacent a declutching tab associated with the power train. A pair of cables extend between the trip bar and the trip lever, and are connected one on either side of the trip bar longitudinal axis.

Abstract: A device for adjusting the sheave pitch diameter of a variable speed mechanism includes an output shaft, a linking member, an upper urging rod, a lower urging rod, and a motor. The device can be operated easily and safely such that the speed changing information is quantified and displayed.

Abstract: In a continuous speed-shifting device in which a variable speed pulley mechanism and a planetary gear mechanism are combined with each other, respective cam mechanisms are provided on respective back sides of movable sheaves of variable speed pulleys of the variable speed pulley mechanism so as to move the sheaves toward and away from fixed sheaves of the variable speed pulleys, a linkage mechanism for linking both the cam mechanisms to each other is provided so that the diameters at which the belt is wound around both the pulleys are varied in a reverse direction to each other, the variable speed pulley mechanism is shifted in speed in such a manner that an output gear for supporting a pinion of the planetary gear mechanism is switched among a normal rotation state, a neutral state and a reverse rotation states with respect to a rotary shaft, the output gear is adjustable to the neutral state by a balance between the thrusts to the belt by both the pulleys, and the variable speed pulley mechanism serves as a

Abstract: A shift adjusting device includes a cam plate and an arm. The cam plate is pivotable and operatively connected to a change speed interlocking mechanism extending between a shift pedal and a belt type stepless change speed device. The arm is also pivotable and operatively connected to a changeover interlocking mechanism extending between a switch lever and a backward/forward drive changeover device. The arm has a pin for engaging a control slot formed in the cam plate. The control slot includes an arcuate forward drive slot portion and an arcuate backward drive slot portion. When the switch lever is in a forward drive position, the pin lies in the forward drive slot portion. The forward drive slot portion allows a full stroke depression of the shift pedal, whereby a forward speed may be selected between minimum speed and maximum speed. When the switch lever is in a backward drive position, the pin lies in the backward drive slot portion.

Abstract: A clutch construction for a reversible walk-behind soil compactor. The compactor includes a frame which carries a soil compacting plate and a drive mechanism, such as a gasoline engine is mounted on the frame and has a rotatable drive shaft. A pair of eccentrically weighted shafts are mounted for rotation on the frame and a belt drive connects each eccentric shaft with the drive shaft in a manner to rotate the eccentric shafts in opposite directions. Each belt drive is connected through a clutch to the drive shaft and the clutch is arranged such that each eccentric shaft is individually engaged with the drive shaft. Through manual operation of the clutch, the eccentric shafts are selectively rotated to thereby move the compactor in a forward or reverse direction over the soil to be compacted.

Abstract: The sealing strip has a main part (1') with a first sealing lip (6) for making sealing contact with a pane (7) or a filling element. The pane (7) is placed against the sealing lip (6) during assembly and rests on the top (10) of a lip (9'). A recess (13') is provided in a bridge (4') in the body of the sealing strip. The foot or base (16') is a second part (2'), which carries a second sealing lip (15') in contact with the other side of the pan (7'), fits into the recess. When the foot (16') is inserted into the recess (13'), the two sealing lips (6'15') are elastically deformed and pressed against the pane (7'). The inserted foot has a groove (19, 22) at one end in which a rib (14') engages. The foot (16') and hence the part ( 2') are thus firmly anchored in the main part (1').

Abstract: A belt drive clutch having a hexagonal sleeve splined on a power output shaft and carrying an outer sheave disc. A drive belt supporting annulus is freely rotatable on the sleeve and located between the outer sheave disc and an inner sheave disc. The inner sheave disc has a stud shaft extending inwardly and having a hexagonal bore matching the hexagonal external conformation on the sleeve. Ball bearings are assembled on the stud shaft and a clutch control ring is assembled on a peripheral race of the ball bearing. A camming arrangement shifts the clutch control ring axially to engage or disengage the belt by optionally constricting or expanding the space between the outer and inner sheave discs.