Abstract: A device for applying oil on a chain of a two-wheeler, such as a bicycle (10), comprises: a container for the oil to be applied; an outlet through which the oil may exit from the container; and an applicator configured to repeatedly open and close the outlet during a movement of the device relative to the chain in the longitudinal direction of the chain so that the oil located in the container is applied incrementally to the chain.

Abstract: The present invention relates to a speed reducer for a vehicle. The speed reducer of an electric power steering system includes a worm and a worm wheel, wherein the worm wheel includes: a boss having an empty space into which a steering shaft is inserted; a gear part integrally formed with the outer circumferential surface of the boss and having crests and roots formed on the outer circumferential surface thereof so as to be engaged with the worm; and a heat conduction member provided on the side of the boss and the gear part to support the roots and the boss to conduct, to the boss, frictional heat generated from the gear part. Accordingly, the speed reducer releases frictional heat from the worm wheel to the boss to prevent wear and noise caused by expansion of the worm wheel.

Abstract: A ball screw device includes an elongated shaft having an outer groove, a ball nut having a screw hole for receiving the elongated shaft and having a passage communicating with the screw hole of the ball nut, and a lubricating device includes an inner cylindrical element engaged onto the elongated shaft and secured to the ball nut, a housing attached onto the cylindrical element and contacted with the ball nut, and the housing includes a chamber for receiving a lubricating grease, an oil distributing member is engaged into the passage of the ball nut and engaged into the screw hole of the ball nut for engaging with the elongated shaft, and an inner element is engaged in the housing and engaged with the distributing member for supplying the lubricating grease to the distributing member.

Abstract: In a self-lubricating transmission device 1, a compression helical spring 15 is provided to urge an impregnation metal 14 as an impregnation means so as to slidably contact the impregnation metal 14 with pin rollers 7. In combination with a rotational movement of a pinion 6, the pin rollers 7 slide on a lower surface 14d of the impregnation metal 14 to supply a lubrication oil W to the pin rollers 7 so as to automatically lubricate the pinion 6 evenly at the right time for an appropriate amount of the lubrication oil W. This obviates the lubrication oil W being wastefully used, while at the same time, making a lubrication work quick, labor-saving and user-friendly.

Abstract: An apparatus is disclosed for use in a system containing at least one of an oil and a lubricating fluid. The apparatus comprises a surface in need of lubrication during operation of the apparatus, and oleophilic fibers disposed on the surface. The oleophilic fibers have a diameter between 50 nm and 10 microns and a length that is at least 5 times the diameter. In addition, the oleophilic fibers have an affinity for at least one of the oil and the lubricating fluid.

Abstract: A lubricant system is disclosed that is formed by contacting a fibrous network with oil and/or lubricating fluid having an affinity for the fibrous network. The fibrous network comprises oleophilic fibers having a diameter between 50 nm and 10 microns and a length that is at least times the diameter. In addition, the oleophilic fibers have an affinity for the oil and/or lubricating fluid.

Abstract: The present invention relates to a lubricating element (12) for rolling element tracks, in particular linear systems, with a body composed of a lubricant-storing material, which includes an application section (34) capable of being brought in contact with a rolling element bearing surface to supply lubricant, and which includes a storage region (22) for lubricant that abuts the application section (34), the body being provided with at least one recess (38) in the storage region (22), on an end opposite to the application section (34).

Abstract: A pressing mechanism that presses a solid lubricant against a brush roller includes two movable members that receive the biasing force of a single biasing unit, rotate around a fulcrum, and press places of the solid lubricant at the symmetric positions with respect to the center of a contact portion of the solid lubricant. The curvature of a portion of a curve shape of the movable member that contacts a casing inner wall is set such that the pressing force in a pressing direction of the solid lubricant in the last stage becomes greater than the pressing force in an intermediate stage, from the initial stage to the last stage after the solid lubricant of the predetermined amount or more is scraped off via the intermediate stage.

Abstract: An apparatus (60) for applying a dry film lubricant comprises a tool (62) and a pad (64). The tool (62) includes a handle (66), a cranked member (68) and a supporting member (70). The pad (64) is removably locatable on the supporting member (70). The supporting member (70) is oval in cross-section and the pad (64) includes an oval cross-section hollow member removably locatable on the supporting member (70). The supporting member (70) comprises locking means (78) to lock the pad (64) on the supporting member (70). The supporting member (70) comprises positioning means (80) to position the pad (64) on the supporting member (70). The tool (62) also has a shielding member (72) spaced from and arranged parallel to the supporting member (70). The handle (66) is arranged in a plane (A) substantially parallel to a plane (B) containing the supporting member (70) and to a plane (C) containing the shielding member (72). The pad (64) is substantially dovetail shape in cross-section to correspond to a rotor slot (40).

Abstract: A protective sheet including a lubricant which contains boron nitride and adheres to the protective sheet, wherein the protective sheet is used to protect a photoconductor.

Abstract: An apparatus (60) for applying a dry film lubricant comprises a tool (62) and a pad (64). The tool (62) includes a handle (66), a cranked member (68) and a supporting member (70). The pad (64) is removably locatable on the supporting member (70). The supporting member (70) is oval in cross-section and the pad (64) includes an oval cross-section hollow member removably locatable on the supporting member (70). The supporting member (70) comprises locking means (78) to lock the pad (64) on the supporting member (70). The supporting member (70) comprises positioning means (80) to position the pad (64) on the supporting member (70). The tool (62) also has a shielding member (72) spaced from and arranged parallel to the supporting member (70). The handle (66) is arranged in a plane (A) substantially parallel to a plane (B) containing the supporting member (70) and to a plane (C) containing the shielding member (72). The pad (64) is substantially dovetail shape in cross-section to correspond to a rotor slot (40).

Abstract: A lubrication disc assembly for lubricating a rod includes a body that circumferentially surrounds the rod and defines a reservoir for storing a lubricant therein. An applicator is disposed within the body directly adjacent the reservoir and contacts the rod. The applicator transfers lubricant from the reservoir to the rod in response to axial movement between the lubrication disc assembly and the rod.

Abstract: An improved wick-holder for mounting a felt lubricating wick of a lubricating system for lubricating the axle journal surface supported in a support bearing of a traction motor used in a locomotive is provided with a plurality of oil-reservoir louver pockets or splash-cups molded or pressed into the wick holder which store oil from the time that the oil reservoir was full or near its maximum height and which store splashed oil during normal operational use, and delay the run off of the oil to increase the oil saturation of the wick housed within the wick holder. The oil reservoir pockets are located above the minimum serviceable oil level, and are designed to improve and increase oil saturation of the wick. As a result of the increased oil saturation, the wick are, therefore, capable of delivering increased amounts of oil to the axle journal area.

Abstract: An improved wick-holder for mounting a felt lubricating wick is provided with a passive inertia-activated pump mounted for submersion in the axle-cap lubricant-reservoir at a level that ensures that for all levels of the reservoir, the pump inlet is submerged in the lubricant of the reservoir. In a first embodiment, the passive inertia-activated pump takes the form of a piston-type pump, while in a second embodiment, the passive inertia-activated pump takes the form of a diaphragm pump. In either embodiment, the inlet of the passive inertia-activated pump is submersed in the lubricant-reservoir, and the output of the passive inertia-activated pump is directed to the surface-interface between the felt wick and the axle journal surface-area to increase the lubrication thereof over and above that which normally ensues owing to the conventional capillary action of the felt wick.

Abstract: A lubrication assembly is provided for lubricating a surface with a lubricant. The lubrication assembly includes a tube adapted to be coupled to the surface. The tube defines a reservoir for storing the lubricant thereon. The lubrication assembly also includes a wiper that is coupled to the tube. The wiper includes a first portion in fluid communication with the lubricant and a second portion disposed for continuous contact with the surface for automatically transferring and supplying the lubricant from the reservoir to the surface. The lubricant reduces frictional properties of the surface.

Abstract: A door hinge lubricator includes a tube, a wicking material and at least one attachment device. At least one lubrication opening is formed through a wall of the tube. Each lubrication opening could be a hole or a slot. The wicking material is inserted into an inner perimeter of the tube. The wicking material is saturated with a lubricant, such as oil. Each end of the tube is sealed with an end plug or the like. The at least one attachment device is preferably attached substantially in-line with the at least one lubrication opening. It is preferable to place the single attachment device on each end of the tube. The door hinge lubricator is attached to one of the hinge plates, adjacent the hinge pin. Lubricant will be wicked into the joints between the opposing hinge plates. After a door hinge stops squeaking, the door hinge lubricator may be removed.

Abstract: It is an object of the present invention to provide a lubricating system that improves the force of retaining a lubricating component of a foam lubricant, minimizes an exudation amount of the lubricating component caused by deformation of the foam lubricant, is excellent in initial lubrication, has a long life, has a low cost, and is excellent in the productivity thereof; a bearing utilizing the lubricating system; a universal joint utilizing the lubricating system; and a process for the production thereof. A lubricating system includes a foam lubricant (9) containing a lubricating component in a resin thereof which foams, hardens, and becomes porous and a lubricant (10) for initial lubrication which is present together with the foam lubricant (9) in a portion to be lubricated. The lubricant (10) for initial lubrication consists of grease having a worked penetration not less than 300 or having a degree of oil separation not less than 0.7 wt % when the grease is left 24 hours at 70° C.

Abstract: A self-lubrication cable assembly includes a cable with a sheath mounted thereto and an end cap is connected to an end of the sheath. The end cap has a chamber defined therein and a plurality of lubrication rings are received in the chamber and mounted to the cable which extends through the end cap. A hole is defined radially through a wall of the end cap and communicates with the chamber. A protection sleeve is movably mounted to the end cap and covers the hole.

Abstract: The invention provides an apparatus and method for applying a liquid lubricant to at least one surface of a moving metal sheet. The apparatus includes a wick and a liquid lubricant reservoir and at least one conduit in flow communication with the wick and reservoir. The liquid lubricant moves from the reservoir in controlled amounts, through the conduit or conduits to the wick by gravity flow and is moved by capillary action through the wick to the surface of the moving metal sheet without the application of an external mechanical force, such as a piston, to generate a pressure gradient through the wick to move the liquid lubricant therethrough.

Abstract: A coater for applying coating material to a moving strip of metal or other substrate. The coater comprises at least one dispenser unit and preferably a pair of dispenser units disposed about the moving strip of substrate. Each dispenser unit is adapted to be in communication with a supply of coating material and to apply coating material to a side of the moving strip. Each dispenser unit comprises a receptacle, a coating discharger strip received within the receptacle having an applicator surface for applying coating material to the respective side of the moving strip, a retainer member received within the receptacle for securing the discharge strip within the receptacle, and an anti-wicking member associated with the retainer member for hindering wicking of coating material away from the applicator surface of the coating discharger strip.

Abstract: The present invention discloses screw bolt and nut with lubricant oil contained ball bush bearing. There is a deep oil storage hole formed in the nut parallel to axial direction of the bolt for storing the lubricant oil. An oil nipple or an oil packing is provided at one end of the deep oil storage hole for preventing leakage of the lubricant oil. A threaded oil dripping hole intersecting the deep oil storage hole with an oil containing member therein is formed in the nut thereby causing the lubricant oil to drip gradually into the spiral grooves and lubricate the rolling balls thereof. The oil containing member can be made of felt, wool, cotton (cloth or thread) or the like. Furthermore, an oil adjusting screw is provided with the oil dripping hole for controlling the flow rate of lubricant oil into the spiral grooves.

Abstract: The present invention relates to a lubricating oil supply system provided in a rolling guide apparatus with which a track shaft and a slide member are engaged through a rolling element such as a ball or a roller, and lubricating a rolling surface of the rolling element formed on the rolling element or the track shaft, and more particularly to an improvement for securely performing a lubrication of the rolling guide apparatus by a simple and inexpensive structure. The lubricating oil supply system comprises a supply member impregnating the lubricating oil, fixed to the slide member and applying the lubricating oil with respect to the rolling surface of the rolling element or the track shaft together with a motion of the slide member, a reservoir tank receiving the lubricating oil and mounted to the movable element, and a supply tube having a fiber entangling element therewithin and introducing the lubricating oil within the reservoir tank to the supply member.

Abstract: A low displacement lubricator for use in the process of inserting fuel injectors into fuel injector manifold pods, the lubricator has a defined reservoir having an open cell foam disposed therein and an applicator in fluid communication with the reservoir. The applicator having an open cell foam that provides capillary dispensing of the lubricant. The amount of lubricant applied is in effect metered.

Abstract: An elongated fluid applicator is used to manually apply a fluid such as a lubricant or a cleaning fluid to the belt and/or belt supporting surface of an exercise treadmill. The applicator is optionally included in a kit containing one or more desired fluids, and at least one treadmill belt tension adjusting device.

Abstract: Wheel lubricating apparatus includes a conveyor for transporting wheels on their side in succession into position to be lifted by a lower unit into clamp engagement with an upper stationary unit to support the wheel to be lubricated against rotation. A pair of lubricant brushes are supported by a rotary carriage on opposite sides of the wheel and are rotated in alternating half rotations during each successive soaping cycle to apply soap to the bead seats of the wheels.

Abstract: A portable arrow lubricant container-applicator system for use in connection with sport bow shooting where arrows are shot into simulated target figures and where it is necessary to quickly and efficiently remove the arrows from the target figure without damage to the arrow tip or shaft and to minimize damage to the target figure. A lubricant container-applicator is provided for holding an absorbent medium which receives a liquid medium to prevent loss and spillage of the lubricant from the lubricant container-applicator. A septum type lid may be provided to allow insertion and removal of the arrow tip and shaft into the lubricating medium and for providing an arrangement for coating the arrow tip and shaft with the desired amount of lubricant. An insertion limiting device can be provided to adjust the length of the extent of insertion of the arrow into the lubrication medium.

Abstract: A lubricating tool includes a longitudinally extending casing, a resilient absorbent medium disposed within the casing, and longitudinally extending slits radially extending from a longitudinally extending centerline essentially in a center of the absorbent medium. A longitudinally extending pilot hole extends along the centerline and the slits radially extend away from the pilot hole. A lubricant supply passage extends from a lubricant supply aperture in the casing through the absorbent medium to the pilot hole and, preferably, the aperture is internally threaded to accept a tube leading to a pressurized supply of lubricant such as grease.

Abstract: The device comprises a container, closed by a lid, for holding the lubricating fluid; a strip of felt or the like is immersed in the container and becomes impregnated with the fluid by capillary action. One end of the strip protrudes from the lid of the container and wraps around a cylindrical support so that a respective portion of the strip, shaped like a cylindrical sector and impregnated with lubricating fluid, protrudes with respect to the surface of the lid and is exposed. The weft thread to be lubricated is made to slide on the exposed portion of the strip, and means are provided for guiding the thread and for producing a cyclic transverse movement thereof from one end to the other of the exposed portion.

Abstract: A method and apparatus for applying a lubricant to an object is disclosed. The lubrication apparatus includes a rotatable and cylindrically shaped brush for applying the lubricant to the object, a housing for holding the brush, and a pump for applying the lubricant to the brush located in a chamber positioned below the brush. A vertical slide cylinder moves the brush in a generally vertical direction along the central axis in and out of the chamber, and a horizontal slide cylinder moves the brush in a generally horizontal direction transverse to the central axis to contact the object. The chamber has a sloped chamber cap connected to the top portion of the chamber for collecting lubricant that drips from the brush. The brush is preferably rotated by a motor.

Abstract: A portable arrow lubricant container-applicator system for use in connection with sport bow shooting where arrows are shot into simulated target figures and where it is necessary to quickly and efficiently remove the arrows from the target figure without damage to the arrow tip or shaft and to minimize damage to the target figure. A lubricant container-applicator is provided for holding an absorbent medium which receives a liquid medium to prevent loss and spillage of the lubricant from the lubricant container-applicator. A septum type lid may be provided to allow insertion and removal of the arrow tip and shaft into the lubricating medium and for providing a means for coating the arrow tip and shaft with the desired amount of lubricant. An insertion limiting device can be provided to adjust the length of the extent of insertion of the arrow into the lubrication medium.

Abstract: A portable lubricant system for use in connection with sport bow shooting where arrows are shot into simulated figures and where it is necessary to quickly and efficiently remove the arrows from the figure without damage to the arrow. A casing is provided and holds an absorbent medium which receives the liquid lubricant to prevent loss of the liquid from the casing. A septum type lid allows insertion and removal of the arrow into the medium and removal of the lubricated arrow for use and limiting devices can be provided to adjust the length of extent of insertion of the arrow into the enclosure.

Abstract: Apparatus for installing grips on golf club shafts includes a grip lubricating device and a golf club shaft lubricating device. The grip lubricating device utilizes a wick which wipes against an inner surface of a grip. The wick is wettable by a lubricant that is held in a container. The golf club shaft lubricating device utilizes an absorbent, sponge-like liner that wipes against an outer surface of one end of a golf club shaft. Control valves regulate flow of lubricant from the container so that a controlled amount of lubricant is applied to the inner surface of the grip and to the outer surface of the one end of the golf club shaft.

Abstract: A lubricator for lubricating the drive shaft of engine starting apparatus. The lubricator has a housing that is comprised of two plastic parts that are secured together by means of locking arms that are integral with one of the parts and which engage the outer part. The housing contains a wick that is saturated with a lubricating oil. The lubricator is assembled to the driving member of an engine starter overrunning clutch by press-fitting it to an internal surface of a tubular portion of the driving member. The inner surface of the wick engages a starter drive shaft and as the overrunning clutch is shifted relative to the drive shaft, the wick deposits a thin film of oil to a length of the drive shaft.

Abstract: In a meter counter assembly of a gas meter, a rotatable shaft of a gear train is journaled in a bore that extends through a support plate mounted in the housing of the counter. The plate is of a porus material, forming capillary passages for the transmission of lubricant therethroughout. A portion of the support plate extends into a lubricant reservoir in the housing. In use, lubricant migrates through the capillary passages to the bore from the reservoir for lubrication of the shaft.

Abstract: A button lubricator applicator system is provided. It consists of a closed structure defining a closed end cylindrical housing having a removable open or lid end, with amine and organo-silicone positioned in the cylindrical housing, together with an air water valve of selected and predetermined shape positioned in the removable open end. The air water valve is depressed in the applicator in contact with the silicone material in order to lubricate it.

Abstract: A kit apparatus includes plural pairs of plug members of varying corresponding sizes, wherein at least one plug member of the pair includes a smooth cylindrical body, with an enlarged head mounted thereon for sealing relationship relative to vacuum line, wherein an opposed plug member of the pair includes a cylindrical body with an enlarged head and at least including a plurality of concentric sealing rings to enhance sealing securement with a corresponding vacuum line when a vacuum line is separated from a vacuum source, such as in a carburetor in an automotive environment.

Abstract: A lubrication system for a cutting machine such as a cloth cutting machine. The lubricant reservoir is provided within a housing portion so as to protect it from damage when the machine is laid on its side. An easily removable wicking module is provided with an end adjacent a reservoir outlet so that only a short feeder wick need be provided for transmission of lubricant into the module.

Abstract: A railroad vehicle wheel flange lubricant system employs a lubricant assembly that connects to the brake shoe. The lubricant assembly has a support member that sandwiches between the brake shoe and the beam head of the braking system. An arm extends from the brake shoe in a circumferential direction. A link pivotally mounts to the outer end of the arm. A lubricant member, including a lubricant reservoir, mounts to the end of the link. A spring urges the lubricant member into contact with the flange of the vehicle wheel.

Abstract: A device for applying lubricant to a rotatable journal having a lubricating body is biased for movement toward the journal along a defined path. Movement of the lubricating body toward the journal is controlled by a low wear, fast-disconnect retaining mechanism.

Abstract: A new method and apparatus for quickening in the insertion of a fish tape through a conduit by reducing the occurrence of frictional adhering. The apparatus provided in several embodiments uses flexible lubricant carrying materials having pressure sensitive fluid release characteristics affixed to the free end of a fish tape. The apparatus is saturated with a fluid lubricant prior to being inserted into an opening of the conduit and pushed. As the pressure sensitive material enters a bend in the conduit, pressure is applied to the pressure sensitive material by the long radius wall surface of the bend causing lubricant to be released. The possibility of frictional adhering of anything being pushed through the bend is greatly reduced. The apparatus moves past the well lubricated area and is immediately followed by the body of the fish tape.

Abstract: This disclosure shows a device designed to facilitate the lubrication of the external surface of a shell casing prior to its being forcibly incserted into a constricting die, in order to be reconditioned for eventual reuse. The device, or shell lubricator, includes a rotatable rigid, cylindrical roller which faces an arcuate, rigid plate. Both of these are faced with a resilient, absorbent material, such as felt, which can hold a lubricating material, to a thickness such that a gap is left between them for the insertion of a shell casing. The shell casings are inserted one-by-one into the shell lubricator, whose rotating cylindrical roller drives them through the gap where they acquire the necessary coating of lubricating material.

Abstract: An arrangement for holding an oil supply in a sharp-edged tool such as scissors, saws, etc. including a recess provided in the sharp-edged tool and an oil supply comprising an oil absorber and a holder. The oil supply is set in the recess so that it can be removed therefrom. The holder retains the oil absorber therein such that a part of the oil absorber sticks out of the holder. The oil absorber is made from materials which absorb oil. In use, the oil supply is taken out of the recess, and the oil in the oil absorber is applied to the sharp-edged tool when the oil absorber is rubbed along the edge of the blade of the tool.

Abstract: A slide assembly for use in supporting and guiding a reciprocating push rod or the like so as to enable reciprocating movement of the push rod while undergoing translation transverse to its longitudinal direction. The slide assembly includes a tubular slide guide which receives a slide tube therethrough having a slide housing supported transversely on an end of the slide tube externally of the slide guide, the slide housing having an axial passage to receive the reciprocating rod. TEFLON bearings are interposed between the slide housing and the reciprocating rod and between the slide guide and the slide tube, and lubricating fluid felts are supported within the slide housing so as to maintain a lubricating film on the reciprocating rod. The slide assembly finds particular application in a turf aerator of the vertical reciprocating tine type wherein the tines are caused to move transverse to their longitudinal axes during reciprocation.

Abstract: A device for automatically lubricating the edges of the rims of a tire shaping drum including a pivoting arm member having disposed on the end thereof an absorbent member adapted to be positioned proximate to the rims of the tire shaping drum whereby lubricant may be metered to the absorbent material in order to allow the rim of the tire shaping drum to be automatically lubricated in response to control signals provided by a programmable controller.

Abstract: A scanning mechanism for a recording apparatus having a carriage for scanning with a bearing portion at which the carriage is engaged on a guide shaft, whereby a dynamic pressure bearing is used in the above-defined bearing portion, and a lubricant supply member is provided on the guide shaft in a position at which the carriage arrives selectively.

Abstract: A lubricating system for sewing machines is produced with the sewing machine running by cutting a predetermined amount of cotton fibers into small lengths and blowing the fiber lengths into the sewing machine housing. As the fibers fill the housing a felt cushion conformable to the paths of motion of the parts of the mechanism is produced. The felt cushion is supplied with oil through a wick.

Abstract: A method of providing a lubrication system for a shaft journaled in a dynamoelectric machine. In this method, the shaft is lubricated with a solid lubricant of a feeder wick member impregnated therewith during at least a part of the run-in operation of the dynamoelectric machine when it is first energized. A mixture of a lubricating oil and the solid lubricant is then created to effect the lubrication of the shaft by passing the lubricating oil from a storage wick material therefor through the feeder wick member in response to the rotation of the shaft when the dynamoelectric machine is energized.

Abstract: An endless conveyor band guided around horizontal deflecting rollers, especially a transporter of bakery goods, is coated with a consumable bond-breaking substance by means of a device juxtaposed with a rising bight portion of the band hugging one deflecting roller. The device comprises a mobile carriage biased by gravity toward that deflecting roller from which it is held separated by a pair of spacing rolls. Coating material is applied to the band surface, at a plurality of axially spaced locations, by respective daubers which may be catapults periodically dipping into a bath of coating liquid, or guides for sticks of semi-solid coating material continuously pressed against the band. A distributor reciprocable in axial direction comprises a plurality of wipers sweeping a zone of the band above the daubers for spreading the locally deposited coating matter over the entire surface.

Abstract: This disclosure is directed to an internal combustion engine having a plurality of double oscillating pistons disposed around the interior of the housing, each side of each oscillating piston having a cam arm which applies the force of combustion to a cam gear. The cam gear has a cam surface on its exterior which engages the cam arm and a ring gear on its interior which engages a plurality of planetary gears which in turn drive a drive shaft having a sun gear.

Abstract: In an intermittent transmission meshing mechanism comprising a toothed drive member having a toothed portion and a circular outer periphery continuous therewith and a toothed driven member having a toothed portion and arcuate locking faces formed on the opposite sides thereof, an oil retaining member having a projection projecting toward the drive member is provided on the driven member between the toothed portion thereof and each of the locking faces or on each of the locking faces. When an end of the circular outer periphery of the drive member adjacent its toothed portion comes into sliding contact with the toothed portion or locking face of the driven member, the corresponding oil retaining member slightly presses against and applies lubricant to the end.