Abstract: In a tractor power take-off system in which first and second PTO shafts are disposed in the transmission case, the transmission case has at the bottom wall thereof an opening for taking off power to the second PTO shaft and there is disposed a PTO gear speed-change mechanism commonly used for both the first and second PTO shafts. The PTO gear speed-change mechanism has a PTO speed-change shift gear meshed all the times with a large-width speed-change gear for transmitting power to the second PTO shaft.

Abstract: A continuously variable transmission mechanism incorporating co-axial spaced input and output rollers between which a variable ratio driving connection is established by discs which have flat faces engaged with the peripheries of the rollers. Axial movement of the assembly of discs varies their effective diameter and thus the drive ratio. A planetary gear set has one element rotatable with the input roller, a second element rotatable with the output roller and its third element constituted by a carrier and a planet gear connected to an output shaft. The engagement load between the rollers and discs is controlled in response to the torque being transmitted. The transmission provides a range of transmission ratios in a forward and reverse direction.

Abstract: The invention comprises a wear-compensating device for incorporation in a control linkage used for operating a motor vehicle clutch. The control linkage is arranged between the declutching fork and the clutch pedal and the device comprises two coupling parts, each of which is linked respectively to two successive sections of the linkage.According to the invention, the outermost coupling part carries a sleeve divided into jaws so that it can pass elastically from a free configuration of disengagement, at which the jaws are at a distance from the innermost coupling part, to an enforced configuration of engagement, at which the jaws are clamped to the latter.The device compensates for wear of the clutch friction surfaces by changing the effective length of the control linkage.

Abstract: A driving belt formed from detachable, flexible, elongate links arranged in a staggered, overlapping relationship. Each link is provided with a stud which is rotatable relative to the link and has a head which is shaped to pass through perforations in other links when the head is orientated correctly relative to the perforations but not otherwise. The arrangement allows simple assembly and disassembly of the belt without any lateral distortion of the material of the links.

Abstract: A valve timing device for an internal combustion engine includes a hub with an internal helical groove which engages a tracking post extending from a cylindrical surface of a crankshaft. A locking cap is placed at the outer end of the crankshaft spaced apart from the hub with a compression spring wrapped about the crankshaft between the hub and the locking cap. A sprocket is keyed onto the hub and trained about a chain which is drivingly trained about a conventional camshaft. As the crankshaft speed is increased, inertial loads of the camshaft causes the sprocket and hub to rotate relative to the crankshaft which axially moves the hub a predetermined amount along the crankshaft to compress the spring until the resilient forces of the spring counterbalances the inertia forces of the camshaft.As the hub is angularly positioned, the camshaft becomes angularly retarded relative to the crankshaft such that the valve operation is delayed with respect to the piston operation as the engine speed increases.

Abstract: A variable ratio transmission apparatus for converting an input torque at a first RPM to an output torque at a second RPM includes a pair of driving discs disposed on an input drive shaft and in spaced parallel ralationship thereto, a pair of driven discs disposed on an output drive shaft and a continuous length of metal link chain extending around and in direct contact with each pair of discs so as to create a high frictional force at the discs and chain interface sufficient to transmit motion from the driving discs to the driven discs. The link chain is arranged as a continuously repeating pattern wherein each pattern includes three generally triangular link plates of a clustered configuration which are interconnected by pins disposed in a first row and a plurality of U-shaped drive members connected to the link plates by pins disposed in a second row.

Abstract: A pneumatically operated press in which the moving press plunger (13) is actuated by a toggle linkage (20, 21, 22) which is itself actuated by a second toggle linkage (30, 31, 32). The end link (31) of this second linkage is actuated by a large diameter pneumatic ram (34) while the pivotal point (32) of this second toggle linkage is connected to a relatively small diameter pneumatic ram (36), or some other actuator. An automatic switch (42, 32) engages a valve to admit air to the larger ram (34) when the smaller ram (36) has moved the second toggle (30, 31) into an in-line position. The ram (36) may be replaced by a manual operating lever.

Abstract: A toothed belt having an endless rubber band formed with projecting tooth portions, the rubber band having tension members buried in parallel therein. A cloth cover is fastened to the toothed surface of the band. The cloth is formed of woven fibers, and one of the warp and woof fibers of the cloth has a high-adhesive characteristic, and has a greater exposed surface area on one side of the cloth, which side is fastened to the toothed surface. The other of the warp and woof is formed of a fiber having properties suited for the working environment, such as properties of abrasion resistance and low friction, these latter fibers having a greater exposed area on the other side of the cloth, which other side is positioned for engagement with a toothed pulley.

Abstract: A wheel hub with a freewheel which has a hub shaft passing through a hub proper adapted to rotate smoothly on steel balls and a gear ring equipped with a sprocket wheel fitted in said hub proper by a ratchet mechanism. The steel balls are held adjustably by both a shoulder of the hub proper and a screw cap, and a lock nut is screwed on the hub proper at the outside of the screw cap so as to prevent loosening of the screw cap.

Abstract: An enclosure means for a cylinder end of a rack steering mechanism is provided comprising a bearing within the cylinder end for slidably supporting a rack and which is secured to the cylinder by nesting corrugations of the cylinder and the bearing coacting to lock the cylinder and bearing together. A sleeve of synthetic material surrounds the cylinder end and has an inwardly directed radial corrugation nesting within the corrugation of the cylinder locking it to the cylinder. The sleeve is provided with a ported through passage for equalizing air to be transferred between respective bellows at the ends of the rack which protect ball joints connecting the rack to a steering mechanism.

Abstract: In a transmission control system for a multiple speed ratio powershift transmission having a speed control valve and a plurality of fluid pressure operated clutches adapted to establish torque ratio changes, an electronic speed sensing system and downshift valve means for automatically shifting the transmission one step from a higher speed ratio to a lower speed ratio at a first predetermined vehicle ground speed by diverting the fluid for pressurizing a higher speed ratio clutch to a lower speed ratio clutch and then automatically shifting the transmission from the lower speed ratio back to the higher speed ratio at a second higher predetermined vehicle ground speed by ceasing the diverting of the pressurized fluid, with the fluid diverting being possible only when the speed control valve setting corresponds with the higher speed ratio.

Abstract: A belt tension controlling mechanism has a spring member which operates on a pulley support bracket to establish a tension in a belt trained on the pulley. The spring member surrounds a threaded sleeve which is rotated by a pair of selectively operable one-way ratcheting clutches which are simultaneously driven in opposite directions by a vacuum motor. The rotation of the sleeve results in linear meovement of a shaft connected to the pulley support bracket to thereby increase or decrease the belt tension, depending upon which clutch is operable.

Abstract: A unit hub for a bicycle, comprising a hub combined with a freewheel. A cylindrical member is screwed to the hub body and is provided at one of its axially outside ends with an extension radially extending and having ball races carrying balls for supporting therewith a driving member and supporting the cylindrical member to the hub shaft respectively. The cylindrical member has a rotary control or tool receiving opening formed within the center thereof.

Abstract: A gearing has on its driving shaft a drive means carrier member carrying drive means in the form of pins protruding towards a driven means carrier member fixed to the driven shaft and carrying divergently arranged driven means. The driven shaft is offset relative to the driving shaft so that the circular orbital path of movement of the driven means surrounds the circular orbital path of movement of the driven means. From the drive means always only one single drive means contacts a driven means and only in a portion of the orbital path thereof which portion is more remote from the axis of the driven shaft than that portion of this orbital path arranged nearer to the driven shaft. In the other portions of their orbital path, the drive means pass within the orbital path of the driven means but do not contact these. This results in an increased torque of the driven shaft.

Abstract: A hydraulic tensioning device for maintaining a predetermined amount of tensioning force on an endless drive belt of a vehicle accessories drive system. A housing is mounted in a fixed position on the engine in close proximity to the drive belt. A shaft is movably mounted within the housing by an elastomer block which biases the shaft in a belt tensioning rotational direction. A lever extends outwardly from the housing and is integrally connected to the shaft for pivotal movement upon rotation of the shaft. An expandable bladder or actuator is mounted in the housing and is engageable with the shaft and pivots the rotor and lever toward a belt tensioning direction when the bladder is expanded by hydraulic fluid. A hydraulic fluid supply and pump assembly supplies fluid under pressure to inflate the bladder. An idler pulley drivingly engages the fluid pump and is driven by the endless drive belt for actuating the pump.

Abstract: A transfer device associated with a power transmission unit includes an input shaft for connection to an output shaft of the transmission unit, a first output shaft axially aligned with the input shaft through an intermediate shaft, a second output shaft located parallelly apart from the input and intermediate shafts, a selector gear unit associated with a change-speed gearing for selectively completing low and high speed gear trains, and a differential gear unit mounted on the intermediate shaft for distributing drive power to the first and second output shafts. In the change-speed gearing, a high speed drive gear is connected with an output member of the differential gear unit and in mesh with a high speed counter-gear to provide a power path between the differential gear unit and the second output shaft, and a second selector gear unit is assembled adjacent to the first-named selector gear unit on a common axis to control the operation of the differential gear unit.

Abstract: A chain drive is proposed for motorcycle rear wheels carried by swing arms. The chain is deflected by means which are rigidly secured to a swing arm carrying the rear wheel so that the resiliency of the rear wheel suspension is independent of the forces exerted by the chain during an acceleration and deceleration of the motor.

Abstract: A two-speed clutch in which an input rotary drive is transmitted to an output rotary member to produce a high speed direct drive in which the output rotary member is driven at the same speed as the input member, or to produce a reduced output speed. The input member comprises an inner drum driven by centrifugally actuated clutch shoes in turn driven by an input shaft. A second set of clutch shoes is interposed between the inner drum and the output member consisting of an outer drum, which clutch shoes are designed to be centrifugally disengaged to produce a controlled slip between the inner and outer drums to reduce the output speed. In the high speed mode, the inner and outer drums are latched together to rotate at the same speed by a pivotally mounted latch mounted on the outer drum and an expanding spring element mounted to the inner drum, with engagement between the latch and expanding spring taking place at a predetermined rate of rotation of the inner drum to establish high speed drive.

Abstract: A raw edge type rubber V-belt having a tension section, a compression section and a tensile member layer extending in the longitudinal direction of the belt and embedded between the tension section and the compression section. A single or plural plies of rubbered fabric highly stretchable in the longitudinal direction of said belt are, in laminated form, embedded in the lower portion of the compression section with a rubber layer on each fabric, and bonded to the upper surface of the tension section. Short fibers are mixed in a compression rubber layer under the tensile member layer and in a tension rubber layer on the tensile member layer in such a manner that the short fibers extend in the lateral direction of the belt.

Abstract: A raw-edge, endless power transmission belt is provided which comprises a plurality of layers. At least one of these layers is a fabric layer; another layer is composed primarily of elastomeric material; and at least one further layer is an elastomeric material having a heat-conducting amount of a pyrolytic graphite dispersed therethrough. The pyrolytic graphite-containing elastomeric layer is disposed between any two other layers in the belt and acts to conduct heat to the outside of the belt. Also provided is a method for making this belt.