Abstract: An off the road motorcycle having a balloon tired rear wheel that is suspended by a trailing arm and which is driven by a pair of flexible transmitters, one positioned closer to the motorcycle center line than the other so as to provide clearance for the rider's feet. An arrangement is provided for adjusting the tension in each of the two chains and one of these adjusting mechanisms moves the pivot point of the trailing arm relative to the frame.

Abstract: A tension mechanism for an .alpha.belt drive apparatus comprising an .alpha.belt which is wound around a drive pulley, the one end of which is fixed to a carriage and the end of which is formed an engaging portion, and a lever which is rotatingly and pivotally supported on the part of the carriage and forms a short hand portion having a stopper on its tip end to engage with the engaging portion and a long hand portion being urged on its tip end to be stopped at the part of the carriage.The lever above mentioned is rotated and stopped on its tip end of the long hand portion at the part of the carriage so that the .alpha.belt can be applied a tension force.

Abstract: A V-belt stretching mechanism to adjust the tension of the V-belt in an internal combustion engine wherein a spring plate has two arms with ends staggered in the longitudinal direction of an adjust bolt. A slide cam has hooks which engage with the arms. Engagement and disengagement of the cam with the arms of the spring plate makes it possible to automatically adjust the tension in the V-belt.

Abstract: The driving tension of a drive belt is maintained by axial force components applied to a pair of adjustable diameter pulleys about which the drive belt is entrained. A spring force is divided into such force components under control of relative torque loadings applied to the pulleys through drive shafts thereby also establishing a drive ratio that is automatically varied by relative adjustment of the pulley diameters.

Abstract: A belt tensioning adjustment assembly for a powered unit including a operating lever and a rotably supported wheel over which a cable passes and friction locking means is provided for fixing the rotated position of the wheel thereby to effect selective non-incremental adjustment of the cable length. The non-incremental adjustment of the cable length allows a drive belt tensioning lever to effect deflection of a belt drive and to effect driving engagement of a motor shaft to a work attachment unit.

Abstract: A belt tensioning device for an endless drive belt for a vehicle accessories drive system. A bracket is adapted to be mounted on an engine in a stationary position adjacent the drive belt and has lever means pivotally mounted thereon. An idler pulley is rotatably mounted on the lever means and is movable into belt tensioning engagement by a torsional coil spring telescopically mounted about the pivot for the lever means. The pulley is mounted so that a radial center line through the peripheral belt receiving surface of the pulley also passes generally through the center of the lever means pivot to reduce the frictional force exerted on the pivot. A brake band ring is mounted between the bracket and lever means and is biased by the torsional spring into a camming engagement with the lever means to provide a damping force when the lever means attempts to move in either a belt tensioning or non tensioning direction.

Abstract: A combine harvester having a straw chopper disposed at the rearward end thereof is disclosed wherein the drive mechanism for the straw chopper includes a driving member, a driven member and intermediate member located between the driving member and the driven member such that there is an angled line of drive between the driving member and the driven member. A first flexible drive transmission member extends between the driving member and the intermediate member. A second flexible drive transmission member extends between the intermediate member and the driven member. A first tensioning mechanism is operable to move the intermediate member in a direction to tension the first flexible drive transmission member. A second tensioning mechanism is operable to move the intermediate member in a direction to tension the second flexible drive transmission member.

Abstract: A belt-type power transfer assembly for driving the separating mechanism of a rotary combine harvester is disclosed wherein the assembly includes spaced apart driving and driven pulleys, an endless flexible belt interengaged between the pulleys to transfer rotational power therebetween and spring-loaded tensioning means operably engaged with the flexible belt to take up the slack thereof and to maintain proper tension therein when transferring rotational power. Stop means are associated with the spring-loaded tensioning means for restricting biasing movement thereof in the direction of the flexible belt, causing the tensioning means to act as fixedly positioned tensioning means after an initial belt tensioning movement thereof. The power transfer assembly according to the invention may be used to drive the separating mechanism of a rotary combine harvester.

Abstract: A timing adjustment mechanism in a wrapping connector driving device includes a first pulley fixedly mounted on a first revolving shaft; a second pulley fixedly mounted on a second revolving shaft, the second pulley tightly fitting on the second shaft and being seated on an end surface of the second shaft; an intermediary wrapping connector wound on the first and second pulleys and extending therebetween; an idle pulley lever swingable about the axis of rotation of the second revolving shaft; a first idle pulley disposed near the second pulley on the tension side of the intermediary wrapping connector and rotatably secured to one end of said pulley holding lever; and an idle pulley rotatably secured to the other end of said pulley holding lever near said second pulley on the slack side of said intermediary wrapping connector, wherein all of the central portions of swing of the first and second pulleys, the tension and slack side pulleys and the pulley holding lever lie in the same plane.

Abstract: A tension-adjusting assembly for driving belts, such as driving belts for controlling the timing shaft of internal combustion engines, includes a device for neutralizing the effects of the variations of the distance between the axes of the pulleys, as caused by thermal expansions of the supports for the pulley journals.

Abstract: An assembly for mounting deflection rollers about which a belt extending between machine side walls is trained comprises plug-in parts which enable the deflection rollers to be assembled one to one machine side wall, and the other to a guide plate supported by and adjustably spaced outwardly of another side wall with the spacing establishing belt tension which holds the assembly together. The guide plate also mounts a detector for monitoring the rotary position of the deflection roller.

Abstract: The tightener includes a contoured strip adapted to bear against the chain or belt and be pivotally mounted on a fixed support member. A wedge member slidably mounted on the support member is elastically biased by a spring and urges the contoured strip against the chain or belt. A guide rod extends through a bore in the wedge member and the spring is mounted on the guide rod. A plate slidably mounted on the guide rod between the spring and the wedge member along one of the edges of the plate and thereby create an eccentric force which jams the plate on the guide rod.

Abstract: Around an engine-body of a vehicle, several auxiliary machinery such as an air-conditioner and a power steering-pump are disposed. Pulleys of said auxiliary machinery are driven by means of an endless belt or endless belts by a driving pulley of the engine. In order to obtain the most effective operation of the engine, consideration should be given to the degree of the power loss for driving the auxiliary machinery.For this purpose, according to the present invention, the order by which said several driven pulleys are driven by said driving pulley is determined by the magnitude of the driven torques of the corresponding auxiliary machinery along the running direction of the endless belt toward the driving pulley.

Abstract: An engine camshaft is driven from the crankshaft through a timing chain such that the chain has a taut side and a slack side. A second chain is drive connected between the crankshaft and a sprocket member which is maintained on the camshaft by a one-way device. The second chain has a taut side and a slack side opposite the corresponding sides of the primary timing chain. During the engine operating cycle, a torque reversal occurs at the camshaft. The second chain prevents the torque reversal from loosening or overrunning the taut side of the primary timing chain. The one-way device permits adjustment of the primary timing chain due to wear while maintaining the taut side of the second chain.

Abstract: A tensioner for a power transmission belt which is adapted to be operated in an endless path and method of making same are provided and the tensioner comprises a rotatable idler pulley, a supporting assembly for rotatably supporting the pulley and urging same against the belt with a particular belt tensioning force with the assembly supported adjacent the belt, and a system for holding the assembly with the pulley urged against the belt, and wherein the holding system operates to lock the assembly at a fixed position immediately prior to moving the belt in its endless path and while the supporting assembly is applying the particular belt tensioning force to thereby determine a fixed center about which the pulley is rotated and the holding system operates to provide release of the assembly from the fixed position and hence the pulley from the fixed center only when the belt is stationary.

Abstract: A multi-mode copying or reproduction apparatus. The apparatus includes a movable, overlong flexible photoconductive belt having image exposure, developing, transfer and cleaning stations operatively disposed about the belt circumference. A two chamber vacuum tensioner is used to collect the extraneous belt length. A raster scanner capable of both writing and reading images on the belt segment laying between the vacuum chambers is provided, together with an auxiliary belt driver for moving the aforementioned belt segment at a speed compatible with that of the raster scanner. An auxiliary charging device, and operators for disengaging selected xerographic components permit selective processing of images written or read by the raster scanner.

Abstract: An end connector for a wire rope suspension system has a shifting mechanism for minimizing wear and has body members which inhibit undesired binding of loaded wire ropes internal to the connector. Two substantially identical body members are adapted to be preassembled in stages on the wire rope and then coupled together in place in the suspension system. Within each one of the body members is a sheave mounted to a journal bearing. The sheave bears the load of the wire rope on the body and can rotate under load to minimize frictional resistance to desirable displacement of the body piece relative to the rope ends. The end connector with displaceable load-bearing body members minimizes wear and increases the life of wire rope suspension systems.

Abstract: A belt tensioner for an endless drive belt for vehicle accessories has a shaft which is mounted in a fixed position adjacent the belt. A lever is pivotally mounted on the shaft and has an idler pulley rotatably mounted on an extended end of the lever. The pulley is movable into tensioning engagement with the belt by rotation of the lever. A first cam plate is slidably mounted on the shaft and is engaged with a second cam plate which is attached to the lever for rotation with the lever. The cam plates each have a plurality of a series of camming surfaces which are mutually engageable with the opposite cam plate surfaces. A plurality of spring discs are telescopically mounted on the shaft and bias the first camming block into engagement with the second block applying a rotational force on the lever to move the pulley into tensioning engagement with the drive belt.