Abstract: An apparatus for cleaning belts of a bowling pinsetter comprising at least one cleaning member for cleaning at least one belt of the bowling pinsetter and a frame for coupling the at least one cleaning member to the bowling pinsetter. The apparatus further comprises at least one positioning member comprising a mechanism for moving and guiding the at least one cleaning member between a cleaning position and a non-cleaning position, wherein the cleaning member is coupled with the bowling pinsetter in the cleaning position and in the non-cleaning position.

Abstract: A device is adapted to be coupled to a conveyor system and recondition at least one chain of the conveyor system. The device includes a base and at least one attachment element coupled to the base. The attachment element is adapted to detachably couple the device to the conveyor system. At least one reconditioning element is coupled to the base, and the reconditioning element is adapted to engage and recondition the chain as the chain moves relative to the reconditioning element. At least one biasing element is coupled to the reconditioning element, and the biasing element urges the reconditioning element away from the base and into engagement with the chain.

Abstract: A cutting assembly of a chainsaw includes a saw chain and a guide bar (4) for guiding the saw chain (3) along a peripheral edge (5) of the guide bar. The saw chain (3) has drive links (6) having drive bases (7) which with their side surfaces (8, 8?) are slidingly guided between the side walls (9) of a guide groove (10) of the guide bar (4) with the formation of a friction pairing. Lubricant pockets (11) are formed in the side surface (8). The lubricant pockets (11) are only open toward the corresponding side wall (9) of the guide groove (10) and are otherwise closed. Offside the lubricant pockets (11), the side surface (8) has a flat sliding surface (12) which slides on the side wall (9) of the guide groove (10). The lubricant pocket (11) has a mean diameter and a maximum depth. The ratio of the mean diameter to the maximum depth lies in a range of 5.0 up to and including 25.0.

Abstract: The present invention relates to a device (100) for sequential cleaning and lubricating a drive chain (200) of a motorcycle, which comprises a housing (10) having top and bottom casings (12, 14) connected together in such a way that the housing is partitioned into a plurality of compartments (30, 40, 50) into which the chain is enclosed. Nozzles (70) are arranged within each compartment of the housing and placed radially inwards onto the chain to supply medium onto the chain. Brushes (60) are attached in the interior of at least one of the compartments of the housing in such a way that bristles (60a) of the brushes are positioned towards and in contact with the chain. At least one drain trap region (14a) is formed inside the bottom casing of each compartment of the housing to collect and drain the residue of medium. Such device achieves reliable and efficient cleaning and lubrication of the drive chain by rapid transferring of cleaning and lubricating material from multiple directions.

Abstract: A vehicle sprocket chain maintenance apparatus that includes a brush for cleaning the vehicle sprocket chain and a device for applying lubricant to the vehicle sprocket chain is adapted to be mounted on a vehicle and used on the vehicle sprocket chain while running the vehicle. The vehicle sprocket chain maintenance apparatus includes a mechanism for individual remote control of actuating the brush and the device for applying lubricant on the vehicle sprocket chain while running the vehicle.

Abstract: A chain cleaner capable of cleaning dirt and debris from the roller chain of a chain driven vehicle is provided. The chain cleaner is a polymer sheet. The sheet has a leading and a trailing edge, upper and lower surfaces, and a bilateral axis defining a chain line. The chain line extends from the leading to the trailing edge. A clear slot is positioned in the sheet adjacent to the trailing edge. The slot has a predetermined height and width which is at least equal to a respective height and width of the chain to be cleaned. The chain is thereby capable of biased directional travel against the lower and upper surfaces and through the slot, along the chain line when operating the chain drive of the vehicle. The chain cleaner includes an assembly for attaching the sheet to the vehicle adjacent to the leading edge.

Abstract: The present invention relates to a device (100) for sequential cleaning and lubricating a drive chain (200) of a motorcycle, which comprises a housing (10) having top and bottom casings (12, 14) connected together in such a way that the housing is partitioned into a plurality of compartments (30, 40, 50) into which the chain is enclosed. Nozzles (70) are arranged within each compartment of the housing and placed radially inwards onto the chain to supply medium onto the chain. Brushes (60) are attached in the interior of at least one of the compartments of the housing in such a way that bristles (60a) of the brushes are positioned towards and in contact with the chain. At least one drain trap region (14a) is formed inside the bottom casing of each compartment of the housing to collect and drain the residue of medium. Such device achieves reliable and efficient cleaning and lubrication of the drive chain by rapid transferring of cleaning and lubricating material from multiple directions.

Abstract: A sprocket for engaging a modular belt having a plurality of belt modules with intercalated link ends connected by transverse pivot members to form hinges. The belt modules may have transverse ribs. The sprocket may be driven by a shaft. The sprocket may be an idler sprocket. The sprocket has a central opening for receiving the shaft. The body has a plurality of teeth disposed in pairs along a periphery of the body. The body has a first opening formed between adjacent pairs of teeth and extending toward the center of the sprocket to provide access to the hinge area, when the belt engages with the sprocket, for application of cleaning fluid.

Abstract: A tension device for a drive chain of a bicycle including a first pulley having a first rotational axis swingable around a swing center, and a second pulley having a second rotational axis movable along a movable direction to change a distance between the first rotational axis and the second rotational axis. The first pulley is arranged to be forced around the swing center to apply tension to the drive chain, and the second pulley is arranged to be forced along the moving direction to apply tension to the drive chain.

Abstract: An elevator installation with an elevator car and a counterweight, a suspension cable suspending the elevator car and the counterweight, and a compensating cable compensating the effect of the weight of the suspension cable, is equipped with a compensating cable guide which for the purpose of guiding the compensating cable has at least one brush.

Abstract: A device for controlling belt lubrication and cooling of a CVT (Continuously Variable Transmission) is improved for minimizing fluid consumption and improving cooling efficiency by changing the nozzle spraying direction for belt lubrication and cooling. The device for controlling belt lubrication and cooling of the CVT (Continuously Variable Transmission) comprises a fluid control portion operated by flowing of a fluid pressure supplied to a primary pulley and a secondary pulley, and a fluid supply portion for controlling a predetermined fluid supply according to movement of the fluid control portion and being connected to the same.

Abstract: A brushless wire-rope cleaner having a base plate, two side members arranged on a base plate at a distance from one another, and a cover extending from one side member to the other side member so that the base plate, the side members and the cover form a channel. A cleaning element is slideably arranged in the channel and a tensioning mechanism is arranged to slide the cleaning element through the channel.

Abstract: A conveyor belt cleaner system and method of manufacturing the same comprising a common component support frame, and key components of: mounting bar, blade support and scraper blade wherein the scraper blade is removably secured within a reusable blade support so as to allow replacement of the scraper blade. Key components are manufactured at a first manufacturing location in long, standardized lengths and incorporated with the common component at a second location for assembly. The key components included standardized guide markings for cutting the key components into segments and aligning key components with one another. A plurality of apertures consisting of holes and slots are uniformly displaced along the key components to facilitate alignment of the components during assembly and securing of the components with fixing elements.

Abstract: A belt cleaner device is provided in which assembling of a frame and a cleaner head may be performed easily and quickly. A belt cleaner device comprises a frame 3 and one or more cleaner heads 1. The frame 3 includes a support face (3a) on its upper surface, and a support hole (33) through the frame. The cleaner head (1) includes a contact face (14) on its undersurface, and an anchor (16) projecting downward from the contact face (14). The cleaner head (1) is supported so as not to be rotated about the running direction of the belt by contacting the contact face (14) and the support face (3a) with each other. The cleaner head (1) is fixed to the frame (3) by fixedly inserting the anchor (16) in the support hole (33). The cleaner head (1) further provides a concave (21) in at least one of the front and rear walls (13) (15) to form a strike seat (22) at the bottom of the concave (21).

Abstract: Systems and methods for cleaning belts used to move fiber optics are disclosed. In general, the system includes wheels that can be arranged to receive a fiber optic belt. The belt can be arranged between a contact plate and a brush. Movement is provided to both the belt and brush and a frictional force is created between the surface of the belt to be cleaned and the brush. This contact and friction cleans the residue from the belt.

Abstract: A modular conveyor belt passes over and around at least one sprocket carried on a non-rotating hollow shaft and causes rotation of the sprocket. The sprocket includes a first pair of diametrically opposed sectors and a second pair of diametrically opposed sectors that are laterally staggered in relation to the first pair of sectors. Each sprocket is flanked by a pair of nozzles, each of which produces a fan-shaped spray. The fan-shaped sprays overlap one another across the lateral extent of the belt so that the entire breadth of the belt is cleaned. Adjacent fan-shaped sprays are angled relative to one another so that their respective sprays do not interfere with one another. The staggered sector design ensures that all sections of the belt are exposed to the spray. The nozzles are positioned to clean hinges of the belt when the hinges are open.

Abstract: A belt-driving apparatus has a belt in the shape of an endless loop. The belt has an outside surface and inside surface, and a guide belt that is formed on the inside surface. The belt is entrained about a roller with the inside surface in contact with the roller. A pulley is mounted at least on one axial end of the roller, the pulley having a circumferential groove formed therein that receives the guide belt therein. A resilient member that urges the first surface of the belt in such a direction that the guide belt enters the groove. The roller may have a circumferential groove formed therein to receive the guide belt, thereby eliminating the pulley.

Abstract: A chain link with bushing in a drive chain where the bushing comprises at least one drain bole for draining liquid inappropriately collected in the bushing. In a further development of the invention, especially in connection with conveyor chains, the bushing comprises a bushing insert with contact surface for the chain pin, where the bushing insert is provided with drain holes. The invention is preferably used in connection with conveyor chains, in particular by the production of foodstuffs by freezing temperature.

Abstract: In an image forming apparatus wherein the slip of a transporting belt relative to a driving device due to a change in the surface state the inner surface of the transporting belt and a bad image can be reliably prevented, and having a photosensitive drum on the surface of which a toner image is formed, a transfer belt and a driving roller for driving the transfer belt, wherein the toner image formed on the surface of the photosensitive drum is transferred onto the transfer belt or a recording material borne on the transfer belt, an abrasive roller is provided at a position, in contact with a surface on which the driving roller abuts against the transfer belt.

Abstract: An elevator cable cleaning apparatus employing wire brushes. The brushes are securely mounted to brush frame members which are in turn adjustably connected to mounting members. The mounting members are adjustably connected to the legs or frame of the hoist machine of the elevator brush frame members. The adjustable connection of the mounting members allows the brushes to be configured to match the angle of the cables. The apparatus can be configured either in a single or dual brush assembly in order respectively clean one side or opposite sides of the cables.

Abstract: The present invention relates to a water pump for an internal combustion engine, capable of effectively preventing the entry of dust into a bearing for an impeller shaft, and of providing a simply constructed and small-sized dustproof function. To this end, a fan (32) is mounted on a portion of an impeller shaft (18) which is positioned within a cup-shaped hood (30), and the inflow of dust into the bearings (22F, 22R) is prevented by the fan (32). The hood (30) is provided with blowout holes (44) in the portions thereof which are opposed to the outer circumference of the fan (32).

Abstract: A device for cleaning elevator ropes includes a carpet strip clamped to be in contact with the elevator ropes and includes an additional supply roll of carpet. Once the portion of the carpet strip that comes into contact with the elevator ropes becomes soiled, the carpet strip can be advanced so that a clean portion of the carpet strip is positioned to be in contact with the elevator ropes and the soiled portion of the carpet strip is discarded. The carpet strip is secured by a pair of labyrinth type clamps that can be loosened and tightened without use of additional tools.

Abstract: A baler belt system for use primarily in round crop baling machines, includes an elongated elastomeric belt that is adapted for rolling engagement with one or more drive, idler, and tensioner rollers of the type normally used in a round crop baling machine. There are one or more sets of cleaning bars disposed on the inner and outer surfaces of the belt. Each set includes one or more flexible cleaning bars that deform during rolling contact with the various rollers. As the cleaning bars lose contact with the various rollers, they snap back to their original shapes, thereby releasing significant potential energy to loosen crop material that may have accumulated on the exterior surfaces of the rollers. In addition, the sets of cleaning bars function to urge an incoming stream of crop material into a tightly formed spiral without the necessity for an excessively aggressively textured belt surface.

Abstract: A sheave structure adapted to prevent the build-up of soil and other foreign materials in the v-grooves of sheaves utilized with ground engaging implements such as rotary tillers is provided. The sheave is constructed of mating halves, which when joined form a sheave with a v-groove that includes circumferentially spaced apart openings in the v-groove apex, below the belt contact area of the flanges. The openings are provided adjacent to, but below the belt contact area so that the belt pushes against any materials that collect in the v-groove. In this way, the belt serves to break apart the materials and push them through the openings. With this structure, accumulations of materials in the sheave are minimized, belt contact with the sheave flanges is improved and power transmission is enhanced.

Abstract: A bicycle chain lubricating device includes a housing (10) with an elongated channel (17) extending therethrough, and a lubricant hole (16) extending between an exterior surface of the housing and the channel. A set of brushes (19) are mounted within the channel. The housing is separable into upper and lower housings (11, 12) along the channel for receiving a portion of a bicycle chain (30) therebetween. An anchoring hook (24) extending from the housing anchors it to the bicycle. In use, the chain is moved through the channel by cranking the pedals backwardly, and a lubricant (32) is introduced into the lubricant hole. As the chain is moved through the channel, the brushes distribute the lubricant along the chain. Because all the lubricant is efficiently directed at the chain, only a minimal amount of lubricant is needed. The housing confines the lubricant therein to keep the bicycle and the surrounding area clean.

Abstract: An apparatus for cleaning and lubricating a bicycle chain while riding is provided. The apparatus includes a water reservoir, a lubricant reservoir and a device for transporting the lubricant and water to an injecting device for injecting said fluids onto the chain. Also provided is a device for enabling the water to be added to further cleansing agents in a dispenser before being gravitated to the injecting device. Similarly, a pump is provided for forcing a controlled quality of lubricant to the injecting device.

Abstract: A tensioning device for imparting torsional bias to a shaft. The tensioning device includes an adapter member connectable to the shaft for conjoint rotation therewith. A first hub member is selectively rotationally engageable with the adapter member. A first coupling member is attached to the first hub and a second coupling member is attached to the adapter member. The coupling members provide selective rotational engagement of the first hub member to the adapter member such that the first hub member and the adapter member are relatively rotatable with respect to one another through a preselected degree of relative rotation and such that the first hub member is engageable with the adapter member upon sufficient relative rotation of the first hub member in a first rotational direction with respect to the adapter member such that further rotation of the first hub member provides a corresponding rotation of the adapter member in the first rotational direction.

Abstract: A tensioning device for imparting torsional bias to a shaft. The tensioning device includes a coupling member of resilient material having a first end and a second end. The first end of the coupling member is connected to the shaft for rotation therewith. A driven member is connected to the second end of the coupling member such that the driven member is relatively rotatable with respect to the shaft. A drive member is associated with the driven member for selectively rotating the driven member to any of a number of infinitely variable positions. The tensioning device is effective to rotate the shaft to a desired position and to store torsional force in the coupling member when the second end of the coupling member is rotated with respect to the first end of the coupling member. The tensioning device includes a torsion indicating member for indicating the amount of torsional force being applied to the shaft by the coupling member.

Abstract: A cleaning device for cleaning foreign matter which is lodged between the sprockets of a bicycle wheel drive shaft, and particularly, but not exclusively, useful for the sprocket clusters of mountain-type bicycles. The device includes a scraper element which extends in the space or spaces defined between the sprockets for dislodging foreign matter lodged in this space. An attachment bracket retains the scraper element at a predetermined position.

Abstract: A lubricating and cleaning unit for chains and rails has a pair of parallel shanks of a shoe and a crosspiece receiving a U-shaped brush in a groove which distributes lubricant through bores in the shanks and crosspiece of the brush to respective bristle bundles. One or more automatic feeders can be connected to threaded openings of the lubricant-distribution bores opening along the sides of the body. The unused openings are closed by plugs.

Abstract: An improved chain guide pulley or derailleur pulley for use with a bicycle rear derailleur system. The chain guide pulley has a guide sprocket portion and a bearing portion. The sprocket portion has, on a circular outer periphery, a plurality of teeth cut thereon. The teeth have dimensions so as to engage an endless drive chain and a cylindrical shaped inner peripheral surface defining thereby a bearing aperture. The bearing is dimensioned to be in an interfitting relationship with the guide sprocket and be attachable to the bicycle rear derailleur system. The teeth thickness dimension is not more than about three-fourths of a minimum distance between opposed pairs of roller link plates of the drive chain such that a less accurate alignment of the chain guide pulley with any one of the rear sprockets is required to effectively cause the drive chain to shift from any one of the sprockets to any other sprocket of the rear sprocket cluster.

Abstract: Drawing frame for drawing fiber sliver with draw frame rollers comprising a pair of pre-drawing rollers and a main drawing roller pair. Power transmission members in the form of flat belts are used for driving the draw frame rollers. A deflection pulley engages the flat belts between respective pairs of wheels deflecting the belts for increasing the angle that the flat belt extends around the respective wheels to provide a non-slip engagement between the flat belts and the respective wheels.

Abstract: An endless elastomeric vacuum sweeper belt for use in a vacuum sweeper having a diamond pattern drive surface. A first set of ribs project inwardly in a substantially diagonal direction along the drive surface of the belt. A second set of ribs project inwardly along the drive surface of the belt in a substantially diagonal direction opposite the direction of the first set of ribs. The first and set second set of ribs together define a diamond-like pattern on the drive surface as well as a number of particle recesses for the temporary collection of matter. Each rib includes knife-like edge portions to increase the traction of the belt on a drive surface by cutting, loosening and expelling foreign matter lodged between the belt drive surface and the rotation member and/or the drive source of the vacuum sweeper.

Abstract: This invention relates to a sheet feeding device having an endless belt for feeding a sheet; multiple rotation members bodies supporting the endless belt and including at least one crown roller, a cylindrical rotational member located between the crown roller and a first body member among the multiple rotation members from the crown roller in the endless belt moving direction.

Abstract: A roller for running a flat belt is formed at its surface by an elastic body. Short fibers are mixed with the elastic body. The short fibers are averagely oriented in a direction radially or peripherally inclined to the roller with a small angle and protrude at their tip portions from the roller surface. Owing to a grip force of the protruding short fibers, the flat belt is running, while decreasing a friction coefficient and obtaining a stability to a variation of temperature and humidity. The short fibers may be oriented in a direction axially, peripherally inclined thereto with a specific angle. When a belt guide member is provided to the roller or flat belt, accurate running of the belt is performed.

Abstract: A drive chain lubricant applicator comprising an elongated plastic housing having a central chain passageway, and two open ends for ingress and egress of a length of drive chain. The housing is openable with a living hinge so it may be placed around and closed over a drive chain. The interior of the housing is covered with flexible plastic bristles placed to oppose one another and to protrude or extend into the central chain passageway for distributing a lubricant over the drive chain. A flexible length-adjustable cord releasibly secures the lubricator stationary over the drive chain during the application of lubricant. The lubricant is dispensed through a hose from a spray can or squeeze tube and through a hose attachment fitting and distribution manifold on the top of the lubricator and into the interior to be applied to the chain by the plastic bristles as the chain is drawn through the applicator.

Abstract: An adjustable brush for cleaning sprocket chains, particularly on motorcycles, has a three-sided adjustable rectangular cleaning channel, one wall of which is adjustable manually during use inwardly and outwardly to change the width of the cleaning channel while maintaining the rectangular configuration of said channel. The brush allows effective cleaning on three sides of a sprocket chain simultaneously. Various improvements are possible including the use of rollers to facilitate smooth movement of the brush surfaces over the sprocket chain, the use of a transversely movable or adjustable intermediate brush at the head of the cleaning channel and the use of a closed four-sided cleaning channel.

Abstract: An apparatus useful for cleaning the debris-laden transmission of an assembled bicycle having a bicycle frame, the transmission including chainrings and a free wheel gear cluster. The apparatus comprises a first reservoir adapted to be secured to the bicycle in proximity to the chainrings, the first reservoir including a first receptacle adapted to hold a quantity of liquid cleaning composition and to collect debris removed from the chainrings; and a second reservoir adapted to be secured to the bicycle separately from the first reservoir in proximity to the free wheel gear cluster, the second reservoir including a second receptacle adapted to hold a quantity of liquid cleaning composition and to collect debris removed from the free wheel gear cluster.

Abstract: A derailleur wheel is disclosed for use with a vehicle utilizing a sprocket chain derailing system. The derailleur wheel has a centrally disposed circular sprocket and first and second circular side faces located on each side of the circular sprocket. A plurality of cleaning brushes are secured to the side faces. The brushes preferably comprise a plurality of tufts of bristles. The cleaning bristles are radially spaced apart and extend in a radially outward direction, thereby resulting in the cleaning of the sprocket chain by the brushing of the bristles against the sprocket chain during use of the vehicle.

Abstract: A variable speed fan drive including a cantilevered support and axially spaced bearings for mounting an input drive member with a cylinder portion and an output fan hub assembly for rotational movement relative to each other and to the support. A modulatable wet type clutch assembly is operably effective to couple the input drive member to the fan hub assembly. The output speed of the fan hub is regulated by the axial compressive force a clutch engaging member applies against interleaved members of the clutch assembly. The clutch engaging member cooperates with the cylinder portion of the input drive member to define an expansible chamber so designed that all clutch clamping forces are confined within the drive member. As such, substantially no axial thrust load is exerted on the axially spaced bearings during clutch application. The drive unit may further include cooperative elements arranged on the drive member and the fan hub assembly for preventing belt cord debris from becoming entangled thereabout.

Abstract: A plough drive employs a plough box mounted face to face on a side plate or intermediate plate of a machine frame of a scraper-chain conveyor. A rotatable chain wheel is disposed in the box for driving a chain coupled to the plough. A chain stripper seats in a pocket in the box and is locked therein. The stripper can be withdrawn laterally from the pocket. The stripper is connected to an adjustable annular collar on the casing of a gearing unit which drives the chain wheel and is detachably secured to the side of the box remote from the frame. The gearing unit and stripper can thus be withdrawn together laterally from the box and the chain wheel can likewise be withdrawn laterally via an aperture in the side of the box remote from the frame.

Abstract: A drive chain cleaning implement characterized by a base having an end portion and projecting portions each carrying bristles which present an overlying and straddling relationship with the drive chain, as on a motorcycle. The base includes an elongated handle portion and, typically, is made from wood, where the aforesaid bristles are made from stainless steel. The invention serves for ready cleaning of a drive chain to eliminate unwanted residues, such as sand, dirt and the like, prior to lubrication and/or oiling.

Abstract: A drive sprocket for use with an elongate, endless saw chain, the sprocket being a substantially circular member having pockets spaced circumferentially thereabout for receiving drive tangs on the saw chain and edge margins adjacent the tang-receiving pockets against which surfaces of side links of the saw chain may rest. The pockets have enlarged portions, or bores, opening radially outwardly from the sprocket, which bores are wider than the side-to-side dimension of the side links on the chain to allow debris to clear radially from the pockets past the sides of the chain during operation. The sprocket also may have axial ports intersecting the radially disposed bores.

Abstract: A scraper cleaning apparatus for reversible conveyor belts comprising a plurality of individual scraper elements which are all simultaneously pressed against the belt by the coordinated operation of first and second flexible vessels by which the scraper elements can be disengaged from the belt when reversing the direction of movement of the belt.

Abstract: A method for cleaning the step boards of an escalator and an apparatus for carrying out the method. The apparatus comprises a holding unit to be fixedly placed at the entrance or at the exit of an escalator, a cleaning unit having a driving means, a power transmitting system and rotary brushes mounted on the holding unit so as to be shiftable widthwise of the escalator, and a pressing means to move the cleaning unit so that the rotary brushes are pressed against each step board of the escalator. Each rotary brush is furnished with a plurality of rows of bristle groups extending helically over the circumference of the cylindrical body thereof, and the individual bristles of each row of the bristle group are inclined both at an angle with respect to the axial direction of the cylindrical body and at an angle with respect to the radial direction of the cylindrical body.

Abstract: This is a bicycle sprocket chain cleaner that includes a housing and a removable cover wherein the chain while still on the bicycle is placed in the housing and the cover is placed on the housing to enclose a portion of the chain. The chain may then be rotated in a counterclockwise manner wherein it passes through the cleaner and is cleaned of dirt and other foreign matter.Within the housing there is a solvent reservoir and a plurality of brush members adapted to contact the chain and clean the same. Some of the brushes will wick the solvent to the chain to assist in cleaning the same.In addition there is a solvent drain means associated with the housing to assure the chain is drained of solvent as it leaves the cleaner.

Abstract: A drive sprocket for use with an elongate, endless saw chain, the sprocket being a substantially cylindrical member having pockets spaced circumferentially thereabout for receiving drive tangs on the saw chain with sprocket edge margins adjacent the tang-receiving pockets providing support for bottom surfaces of the side links of the saw chain. The pockets have enlarged clearing portions opening radially outwardly from the sprocket which are wider than remainder portions of the pockets. The clearing openings are configured and positioned to allow debris to clear radially from the pockets.

Abstract: A rocker arm assembly for support of the haul rope of an aerial tramway or the like is disclosed. The assembly includes rocker arms, rope supporting sheaves rotatably mounted to the rocker arms and cantilevered from an inwardly facing side of the rocker arms. The rocker arms are additionally formed with rope catching groove or recess positioned outwardly of the sheaves and having a configuration which will enable not only the rope, but a hanger arm and grip to pass over the rope catcher in the event that the haul rope derails from the sheaves. The rocker arm assembly also preferably includes a platform which acts as a mount for the rocker arms and can be used for maintainence and repair of the rocker arms and rope supporting sheaves. Additionally, the rocker arm assembly includes haul rope derailment responsive apparatus formed to shutdown the tramway operation upon derailment of the rope from the sheaves.

Abstract: A road wheel for a track-laying vehicle which comprises a metal disc wheel including a wheel mounting disc, a rim extending axially from the periphery of the disc and a strengthening flange projecting radially inwardly from the disc-remote edge of the rim. An overlay body of foamed elastomeric material is molded onto the disc wheel to fill the area between the disc, rim and flange, and thereby prevent accumulation of mud in this area. The outboard surface of the overlay body is pitched axially from the disc to the rim to self-clean as the wheel is rotating. A solid rubber tire is carried externally of the rim.

Abstract: A machine frame for a scraper-chain conveyor employs a housing or `plough box` containing a chain wheel for driving a haulage chain. A stripper device is provided in the housing to separate the chain from the chain wheel. The stripper device is composed of a one-piece shaped element with an arcuate blade projecting into the chain wheel. The element is fitted to a mounting flange of the housing with a single upstanding bolt-and-nut and a separate complementary locking member. The element, the locking member and the flange have shape-locking interengaging projections and recesses. The device can be positionally inverted.