Abstract: An improved drive clutch device for a V-belt type automatic transmission wherein a stationary sheave is fixed to a driving shaft while a movable sheave opposed to said stationary sheave is slidably mounted on the driving shaft. A swingable cam weight and a roller in engagement with the cam weight are correlatively supported by driving shaft and movable sheave respectively. The movable sheave is caused to slide toward the stationary sheave by centrifugal force caused by rotation of the cam weight, whereby the pulley diameter is varied. The movable sheave is cylindrical in shape and has at one end an opening which is covered by a cover cast integrally with a starter pulley.

Abstract: A single point resilient and adjustable mount for a derailler which allows the rear derailler unit which supports and moves the roller cage to be flexibly and adjustably attached to the holding bracket attached to the axle and frame of the bicycle and which has a single adjustment for allowing the derailler unit to be angularly moved relative to the bracket so as to prevent bending of the bracket and derailler and easy and simple adjustment of the derailler.

Abstract: An improved drive clutch device for a V-belt type automatic transmission having a stationary sheave fixed to a driving shaft and a movable sheave slidable along the driving shaft and opposed to said stationary sheave, in which a cam weight having a cam surface and acting as a centrifugal weight and a roller in engagement with the cam surface of said cam weight are pivotally supported on said driving shaft and on said movable sheave respectively and said movable sheave is caused to slide toward said stationary sheave by the centrifugal force caused by rotation of said cam weight to vary the pulley diameter.

Abstract: A friction drive having a drive wheel with annular friction bands peripherally mounted on opposed sides thereof. A friction chain comprises a plurality of inverted generally V-shaped friction links swingably interconnected in series by side plates. The friction chain is receivable about the drive wheel with the V-shaped links matingly and frictionally engaging the friction bands.

Abstract: This variator is improved in order to improve reliability and prolong its life.For this purpose it comprises a friction elements clamping plate provided with two cylindrical skirts which axially extend from opposite sides of the plane of the clamping plate and enable the clamping plate to be supported by the housing by bearings which are axially spaced apart and located on opposite sides of the plane of the clamping plate. Moreover, a ring carrying ramps which adjust the clamping force exerted by the clamping plate in accordance with the torque transmitted is connected to the clamping plate by a relatively deformable connection so that the clamping plate is not subjected to a particularly harmful alternating tipping.

Abstract: A multi-speed bicycle free wheel assembly comprises a free wheel body and a plurality of sprocket wheels different in diameter and fixedly mounted on the free wheel body, the free wheel body including an inner ring or driven member, an outer ring or drive member, a ratchet mechanism interposed between the two members for transmitting one way drive power to the outer ring, and a screw cup screwably secured to one side of the free wheel body, the screw cup having an annular flange formed integral with and extending circumferentially from a screw cup body, the annular flange extending parallel to and beyond the smallest sprocket wheel so as to prevent a bicycle drive chain from being accidentally disengaged outward from the smallest sprocket wheel disposed outmost relative to other larger sprocket wheels.

Abstract: The invention concerns a device for adjusting the rotational speed of a drive mechanism preferably of the type used in a movie projector and provided with a drive motor having a stationary fixed stator, a rotor rotating in only one direction and connected to a friction wheel with at least one, preferably two, oppositely disposed friction discs fixed on a drive shaft for driving engagement with the friction wheel, the friction wheel being adjustable with respect to the friction discs in a radial direction to thereby adjust the rotational speed of the driving mechanism.

Abstract: The present invention refers to improvements in a free-wheeling mechanism for bicycles of the kind including two fixed cones and one movable cone, mounted on an axle and so constituted as partially to provide races in which balls run; furthermore, the movable cone includes at one of its end portions a slotted head in which there rest rollers which are guided by a suitable device, which is also connected to the axle; and there is a hub in which the foregoing parts are housed with the exception of the end of the movable cone opposite the end having the slotted head; the improvements are holding means of the guide device which enable same to force the rollers into contact with the hub or prevent their contact therewith, depending on whether the wheel is to run under engagement or to turn freely without pedalling.

Abstract: A variable pulley system incorporating driver and driven pulleys in which a flange of the driver pulley has a rim to receive the belt or the like connecting the pulleys in the final drive ratio of the pulleys.

Abstract: A sprocket, gear or pulley having an interchangeable peripheral portion for replacement. The device has a hub with an axial boss, an annular member having teeth or a groove along its outer rim and located concentrically on the boss, and a cap to hold the annular member immovable on the boss. The annular member may be segmented. The inner rim of the annular member and the boss may be threaded or splined for interengagement.

Abstract: A spring clip is capable of selective installation on and removal from a pair of adjacent pins in a roller chain. The spring clip has a body portion formed of sheet spring metal and an opening at each of its opposite ends. The intermediate section of the body portion is preformed into an arc to establish a predetermined linear distance between the openings. The openings may only be simultaneously received by and installed at recesses at the extended ends of each pin by deforming the arc of the intermediate section to alter the distance between the openings to a magnitude generally corresponding to a predetermined distance between the pins. When both openings are simultaneously installed at the recessed portions of their respective pins, the arc of the intermediate section tends to re-establish the predetermined linear distance to prevent inadvertent removal of the spring clip from the pins.

Abstract: A variable speed drive includes a planetary set of two adjustable V-belt pulleys orbitally driven around a nonrotatable, or fixed, adjustable sun pulley and a rotatable, adjustable output sun pulley attached to an output shaft. The orbiting planet pulleys are carried on a radial arm driven by the input shaft and have adjustable, inversely proportional effective diameters which are wrapped by V-belts connecting the planet pulleys to the sun pulleys. The effective diameter of the fixed sun pulley is adjusted by a control rod and the effective diameter of the output sun pulley is biased towards its maximum effective diameter. When all four pulleys are at the same effective diameter, orbiting of the planetary set will produce zero output. When the effective diameter of the fixed sun pulley is varied by the control rod, the V-belts will assume new effective diameters on all four pulleys causing the output speed to vary.

Abstract: A bicycle derailler which provides for an actuating mechanism which prevents stretching and breaking of the actuating cable by allowing an actuating link to move when the cable is tightened at times when the wheels of the bicycle are not moving. Under these conditions, when the actuating link is moved by the cable it spring biases the derailler mechanism such that when the bicycle starts to move the spring bias causes shifting of the derailler.

Abstract: A bicycle derailleur mechanism in which the trunnions are moved through an arc in definite increments in cooperation with a detent means, whereby the rider of a bicycle may place the chain on any desired hub-sprocket by moving the trunnions between these pre-selected locations.

Abstract: A frame assembly for a scraper-chain conveyor which is usable as a drive or reversing station. The assembly has bearing units, which are supported by spaced-apart side walls. A shaft carrying a chain wheel for engagement with the scraper-chain assembly of the conveyor is mounted for rotation between the bearing units. The chain wheel is constructed from separate parts and can be readily attached to or detached from the shaft without removing the latter. The bearing units have hollow projecting parts which accommodate bearings for the shaft which are protected by seals. These projecting parts smoothly merge with the exterior of the chain wheel. The shaft has hollow end portions provided with splines which can be coupled to a journal introduced into the associated end portion from the exterior of the associated bearing unit which also provides access to the bearings and seals. This journal can then be coupled to a drive means to effect rotation of the shaft.

Abstract: An inexpensive pulley assembly is disclosed which accommodates a number of driving belts. The pulley includes a hub and a number of sheet metal members. These sheet metal members includes bases for attachment to the hub, inner flanges, sleeves flaring axially away from the inner flanges, and outer flanges. When the sheet metal members are assembled on the hub in an appropriately aligned and opposed array, the opposed, facing flanges form the belt-accommodating pulley assembly. The sheet metal members are rigidly attached to the hub by brazing and staking.

Abstract: A roller chain that includes a series of alternately arranged roller links and pin links is manufactured by welding side bars to separately formed bushings and pins. Each roller link has a pair of laterally spaced side bars extending in a direction longitudinally of the chain. A pair of bushings extend transversely of the chain between the side bars and a pair of rollers are rotatably mounted on the bushings. Welds fuse each end portion of each bushing to an adjacent side bar end portion. Each pin link has a pair of laterally spaced side bars extending in a direction longitudinally of the chain, with one side bar being located on one side of an adjacent pair of roller links and the other side bar being located on the opposite side of the roller links. A pair of pins extend transversely between the side bars, through bore openings in the bushings of each roller link. Welds fuse each end portion of each pin to an adjacent side bar end portion.

Abstract: A driven clutch device for V-belt type automatic transmission which has a movable sheave slidably mounted on a driven shaft, a stationary sheave having a cylindrical portion which has one end open, the stationary sheave being secured to the end portion of the driven shaft through a coupling which seals up the open end of the cylindrical portion of the stationary sheave, and which further has a contact part extending along the shaft and from the back of the stationary sheave, a cam bracket having a cam part which contacts the contact part and a torsional spring interposed between the cam bracket and the stationary sheave for connecting them.

Abstract: A sprocket has a hub with a wide, carefully-machined, convex, outer surface, has a number of circumferentially-spaced, radially-directed, threaded sockets opening to that outer surface, and has a plurality of arcuate segments. Each of those arcuate segments has a wide, concave, carefully-machined, inner surface which is complementary to a portion of the outer surface of the hub, has a convex outer periphery with a plurality of sprocket teeth thereon, has a plurality of radially-directed, shouldered passages therethrough intermediate the teeth thereon to accommodate shouldered screws, and has end faces adjacent the roots of the end teeth which can closely confront the corresponding end faces of an adjacent arcuate segment.

Abstract: A transmission device comprising a first rotary element having two rolling friction surfaces which are of revolution about the axis of rotation of the element, or first axis, and having a center of symmetry located on the first axis, the two surfaces of the first element each being in frictional contact at a single point with one or the other of two rolling friction surfaces which are of revolution about a common axis of rotation, or second axis, and have a center of symmetry located on said second axis, the first axis and the second axis being inclined with respect to each other at an angle a and contained in the same plane, wherein the center of symmetry of the surfaces of revolution of the first element and the center of symmetry of the surfaces of revolution which are in contact with the first element are coincident at the same point S, the two surfaces of revolution about the second axis are formed on two parts connected to rotate with each other of a second element connected to a first shaft coaxial wit