Abstract: An actuator for converting axial movement into incremental rotation. Axial movement of a plunger provides successive increments of rotary motion of a shaft in a first direction through a predetermined angle, then automatically provides successive increments of rotation of the shaft in a reverse direction. After moving through a predetermined angle in the reverse direction the shaft rotation is again automatically reversed so the shaft rotates in the first direction.

Abstract: A transmission system in a cam mechanism having a cam and a driven member to be driven by the cam which comprises an electromagnetic plunger and a control member for having said driven member be driven by said cam while said electromagnetic plunger is energized and releasing said driven member from driving force of said cam when said electromagnetic plunger is deenergized.

Abstract: A sheet metal poly-V pulley formed from a cup-shaped blank having a cylindrical wall with inner and outer peripheral surfaces, the pulley comprising: at least a portion of the cylindrical wall being thickened with material from the blank, the thickened portion having a plurality of parallel V-shape annular grooves in the outer peripheral surface, separated by parallel, annular partition walls, the alternating annular grooves and partition walls being adapted for receiving poly-V belts; the inner peripheral surface of the thickened portion having a plurality of small V-shape annular grooves arranged parallel to one another and centrally aligned with the partition walls of the outer peripheral surface; and, annular flanges at opposite ends of the thickened portion projecting radially beyond the partition walls, the flanges having stepped, annular cut-out portions to prevent contact between the pulley and lateral edges of poly-V belts.

Abstract: A drive for an extruder worm centered on an axis has a substantially closed housing axially juxtaposed with the worm, an input shaft extending along and rotatable in the housing about the axis, exposed axially at an input side of the housing, and adapted to be coupled to a drive motor, and an output shaft rotatable in the housing about the axis, exposed at an input side of the housing, and adapted to be coupled directly to the worm. An axial-thrust bearing is braced between the output shaft and the housing. A planetary transmission centered on the axis between the input and output shafts in the housing has a sun gear rotationally coupled to the input shaft, a ring gear spaced radially outward from the sun gear, a plurality of planet gears meshing with the sun and ring gears, and a planet carrier carrying the planet gears and rotationally fixed to the output shaft. The shafts, sun gear, and carrier are formed at the axis with coaxial axially throughgoing passages.

Abstract: A torque transmission system has driving and driven pulley units around which an endless V-belt extends. Each pulley unit has a stationary pulley part rotatable with a shaft and a movable pulley part disposed to define with the stationary pulley part a circumferentially continuous groove for receiving the V-belt. The movable pulley parts of the pulley units are axially resiliently biased so that the radii of the circle along which the V-belt engages the driving and driven pulley units are varied to change the speed-change ratio of the transmission system. The movable pulley part of the driven pulley unit is axially shifted by the action of fly weights held between a stationary plate fixed to the shaft and a holder fixed to the movable pulley part.

Abstract: A power transmission mechanism for a motorcycle includes a change speed gear mechanism which includes a driven countershaft having one end projecting out through an opening in a transmission casing. The countershaft has a driving bevel gear formed integrally thereon and meshes with a driven bevel gear enclosed in a final gear case detachably connected to the transmission casing. Removal of the final gear case permits axial removal of the countershaft and its integral bevel gear through the opening, as well as removal of certain of the gear elements in the change speed gear mechanism, which also pass through the opening.

Abstract: A multi-speed drive has input and output shafts aligned on a first axis and connected to one another by a cone drive which has a plurality of conical surfaces sloped at various angles to form a "composite" cone. The composite cone is connected to the input shaft by a crank and rotates about a second axis which is oblique to, but intersects, the first axis at a point of intersection which is also a point of coincidence of the apexes of the conical surfaces. The composite cone rolls on one of a plurality of annular, conical surfaces, each of which is aligned with one of the conical surfaces on the cone. In accordance with the illustrated embodiment, all of the annular surfaces are free to rotate with respect to the composite cone, with the exception of the single annular surface that the composite cone rolls upon. This surface may be selected by stopping its rotation with a braking device, such as a pin or a prony brake.

Abstract: A mechanical transmission with a variable speed ratio that generates two oscillatory rotary motions that may have the velocities thereof selectively increased or decreased by concurrently increasing or decreasing the effective lengths of a pair of crank arms, with one of the oscillating rotary motions being rectified by two over riding clutches to become a pulsating rotary motion in a constant direction, and the pulsating and oscillating rotary motions thereafter being combined by a differential to result in a fixed ratio of output to input velocity for each setting of the pair of crank arms.

Abstract: A gearing transmission has two operatively different sets of planetary transmission apparatuses and is adapted to enable speed changing in six steps in the forward running travel and in two steps in the rearward running travel. The two operatively different sets of planetary transmission apparatuses have only one common internal-tooth gear and only one common spider.

Abstract: A mechanism for converting rotary motion in rectilinear to and fro comprising and hinged in the housing of a crosspiece by a prestressed rod and conical bearing. An even number of bearings stacked symmetrically on each side of the center and internal cages are fitted an intermediate bush with the interposition of spacing rings, the thicknesses of the rings being so determined that the pre-stressing force is distributed equally between the bearings and causes the complete take-up of play. The invention is particularly useful in multicylinder pump mechanisms distributed regularly around a shaft and with axial pistons.

Abstract: A positive drive and an improved clutch actuating mechanism for use therein is disclosed. The positive drive has a housing (10) retaining a pair of spaced drive clutches (54 and 56) which lock a pair of axles (18 and 20), respectively, to housing (10) for one-to-one rotation. The clutches are moved from the disengaged to the engaged mode by axial movement of drive couplings (30 and 32) which include cam members (38 and 40) respectively. Input torque is transmitted from the housing to the cam members by means of a shaft (48) and the axial forces required to engage the clutches are transmitted from the shaft to the cam members through engagement of a shaft cam surface (49) and a ramp cam surface (51). In accordance with the invention, the engaging cam surfaces are defined by a common locus of generating lines (101-106) such that the cam surfaces are in surface-to-surface contact, rather than line contact or point contact, over the entire range of pivotal movement of the shaft, relative to the cam member.

Abstract: A hand held reciprocating mechanism for driving an abrasive tool for finishing dies and the like is disclosed. The reciprocating mechanism of the present invention includes a housing which supports a tool holding assembly, and a drive mechanism including a crank pin which reciprocates a connecting rod which is operatively coupled to the tool holding assembly. The tool holding assembly is supported for reciprocation by a support bushing which is supported by the housing. An internal retaining ring is employed to attach a tool support housing to the tool support bushing and allow rotation of the tool support housing relative to the tool support bushing. The retaining ring allows the use of an enlarged outer end for the tool support housing with a slot formed therein to slidingly support a pair of opposed flats formed on the tool holding assembly. This permits the tool holding assembly to support heavy transverse loads without excessive wear between the tool holding assembly and the tool support housing.

Abstract: A pushbutton-operated waveband or station selector which comprises a tuning axis having a tuning knob and rotatably-mounted on a tuning axis mounting plate, an idler plate driving gear rotatably mounted on the plate, an idler roller or gear disposed between the tuning axis and the idler plate driving gear for transmitting rotation of the tuning axis to the idler plate driving gear; the idler roller or gear is rotatably mounted on a clutch lever operatively coupled on a kick arm and the idler plate driving gear is in meshing engagement with a rack gear of an idler plate operatively coupled on a core slide.

Abstract: A tensioning apparatus for a power transfer mechanism utilizing an endless flexible member having a normally slack run and a normally taut run is disclosed wherein the tensioning apparatus is operable to take up the slack in the endless member under both normal operating conditions and reverse power conditions during which the normally slack run becomes taut and vice-versa. The tensioning apparatus varies the amount of tensioning force applied to each run of the endless member in response to the amount of tension within the respective run. A constant biasing force is applied to a pair of tensioning idlers through an elongated rod which positionally changes relative to the tensioning idler pivots to vary the amount of tensioning force applied by the tensioning idlers.

Abstract: An improved drum type switch-over mechanism for a speed change device including a speed change pedal shaft and a speed change drum both of which are rotatably supported in axial alignment with one another on a transmission case and which are operatively connected to one another by way of an intermittent feed mechanism so as to allow the speed change drum to be rotated by a unit angle in a predetermined direction on every reciprocatable rotation of the pedal shaft by a predetermined angle. The improvement consists in that the pedal shaft is located in axial alignment with an input shaft of the intermittent feed mechanism, that a sun gear is formed on the input shaft while a plurality of planet gears are mounted on the pedal shaft for meshing engagement with the sun gear, and that a ring gear meshing with the planet gears is firmly fixed to the transmission case.

Abstract: An endless power transmission belt having a toothed compression section and method of making the same are provided, the belt being formed substantially of polymeric materials and comprising a tension section, a compression section, and a load-carrying section disposed between the tension section and the compression section and having a transverse centerline, the compression section having an outer layer and an inner layer joined to the outer layer and defining an interface therewith that is substantially uniformly spaced from the load-carrying section by the outer layer throughout substantially the entire width and length of the belt. The compression section has an inner surface in the form of alternating transverse teeth and grooves with the grooves respectively defining the roots of the teeth. The inner layer has a thickness from the interface to the tips of the teeth thereof that is approximately the same as the thickness of the outer layer.

Abstract: A tensioner for a power transmission belt that is adapted to be operated in an endless path and a method of making the same are provided, the tensioner comprising a support unit for being fixed relative to the belt, a belt engaging unit carried by the support unit and being movable relative thereto, a mechanical spring unit operatively associated with the support unit and the belt engaging unit for urging the belt engaging unit relative to the support unit and against the belt with a force to tension the belt, and a fluid dampening unit operatively associated with the support unit and the belt engaging unit to dampen the movement of the belt engaging unit relative to the support unit in at least one direction of movement thereof, the dampening unit comprising a piston unit and a cylinder unit having the piston unit therein and defining two chambers for fluid in the cylinder unit on opposite sides of the piston unit.

Abstract: A mechanical integrator, such as may be used in a fuel pump variator, is of reduced size, adapting it for use in applications in which the space available is limited. It employs three planetary gears having odd numbers of teeth, and may utilize the mounting shaft as one input signal source. The planetary gears are mounted in a relationship of isosceles triangularity, typically with complementary angles of 108.degree. and 144.degree. therebetween.

Abstract: A belt pulley and method of making the same are provided, the pulley having a hub and a peripheral groove for receiving part of an endless belt therein that is to drive the pulley or be driven thereby whereby the pulley is adapted to be rotated about the axis of the hub. The groove of the pulley defines an annular bottom surface of the groove and a pair of spaced apart angled inside surfaces of the groove that join with the bottom surface and diverge away from each other as the angled surfaces extend away from the bottom surface. The angled surfaces are adapted to be engaged by opposed angled sides of the belt in such a manner that a bottom of the belt will be spaced from the bottom surface. The pulley has opposed outer sides.

Abstract: An improved front derailleur for a bicycle, is provided with a mounting nose extending from a base member of the derailleur and with a support mounted to the nose integrally therewith or independently thereof, the support including an insertion bore for a control wire and a socket for an outer sheath guiding the wire. The mounting nose and support have guide slots in continuation of the insertion bore and extending therefrom, the guide slot extending in a direction away from a linkage member of the derailleur. The guide slots have a length larger than the maximum wire deflection created when a control wire having no outer sheath is operated.