Abstract: An apparatus for automatically cleaning the clips on a web processing apparatus is described. The apparatus includes a scraper for scraping the web supporting surface of the clips on the web transporting machine, and also desirably includes a clip opener, for facilitating opening of the clip to enable the scraper to easily access the clip web support surface. The scraper is desirably supported in a manner that enables it to move upwards and downwards relative to the web supporting surface of the clips, to account for variations in clip height and positioning. The clip cleaner can be readily applied to existing web processing apparatus, such as tenter frames, and desirably can be selectively moved from an operative position to an inoperative position.

Abstract: A conveyor belt cleaner and tensioner assembly adapted to be attached to a cross shaft. The conveyor belt cleaner and tensioner assembly includes a mounting base adapted to be mounted to the cross shaft and an arm member having a first end and a second end. The first end of the arm member is pivotally attached to the mounting base for pivotal movement about a pivot axis. A scraper blade is attached to the second end of the arm member. A gas spring tensioner has a first end pivotally attached to the mounting base and a second end pivotally attached the arm member. The tensioner includes a housing and a ram having a first end located within the housing and a second end located externally of the housing. The ram is extendable and retractable with respect to the housing to thereby pivot the arm member and the scraper blade about the pivot axis. The scraper blade includes a metal scraping tip having an elastomeric wear-in tip.

Abstract: A scraper blade (1, 1A) for a belt conveyor (8), the scraper consists of, or incorporates, a plurality of resilient fingers (3, 3A) adapted at one end (5) of each finger (3, 3A) to engage the belt surface (6) for scraping purposes and at the other end to be supported in suitable proximity to the belt surface (6) to be scraped, with the individual fingers (3, 3A) capable of deflection upon encountering any projection (10) such as a mound or joint of the belt surface (6).

Abstract: A mounting arrangement for removably mounting a conveyor belt cleaner scraping member to a support member. The mounting arrangement includes first and second mounting members adapted to be attached to the support member. Each mounting member includes one or more apertures. A base member is adapted to be attached to the scraping member. The base member includes one or more bores adapted to be aligned with a respective aperture in each mounting member. The bore includes inwardly projecting first and second annular ribs. A mounting pin having a shank is adapted to be inserted into the apertures of the first and second mounting members and into the bore of the base member to thereby connect the base member to the mounting members. The shank of the pin includes a first annular groove adapted to receive and interlock with the first rib of the base member and a second annular groove adapted to receive and interlock with the second annular rib of the base member.

Abstract: A conveyor belt cleaning system being a torsion blade holder assembly having a mounting sub-assembly and a blade support sub-assembly. The mounting sub-assembly has a first hollow member and a second member situated at least partially therein with torsion elements in the plurality of spaces or cavities between the first hollow member and the second member. The blade support sub-assembly, in which a scraper blade is secured, is attached to the second member such that when the scraper blade meets resistance while scraping the surface of a conveyor belt, the torsion elements are compressed and the blade support sub-assembly with the scraper blade rotates away from the conveyor belt.

Abstract: A tensioner device for imparting a rotational biasing force to the shaft of a conveyor belt cleaner. The tensioner device includes a biasing member wherein a first end of the biasing member includes a first coupler member and a second end of the biasing member includes a second coupler member. The second end of the biasing member is adapted to be inserted into a bore in the shaft of the conveyor belt cleaner such that the second coupler member rotationally couples the second end of the biasing member to the shaft. The tensioner device includes a rotatable actuator member having a recess adapted to receive the first end of the biasing member. A lug extends inwardly into the recess and is adapted to engage the first coupler member of the biasing member such that the first end of the biasing member is rotationally coupled to the actuator member for conjoint rotation at least in one rotational direction.

Abstract: A conveyor belt cleaner and tensioning arrangement for cleaning a conveyor belt including a conveyor belt cleaner and a tensioner. The conveyor belt cleaner includes one or more scraper blades mounted on a rotatable cross shaft. The tensioner includes a mounting member attached to the cross shaft for conjoint rotation therewith, a resilient linear biasing member attached to the mounting member, and a linear actuator attached to the biasing member. Operation of the actuator member stores a biasing force within the biasing member which in turn rotates the scraper blades into full-face engagement with the conveyor belt with a biasing force. As the scraper blades wear the biasing member continues to rotate the scraper blades into full-face engagement with the conveyor belt with a biasing force that changes in magnitude.

Abstract: A scraper blade adapted to be mounted on a cross shaft of a conveyor belt cleaner. The scraper blade includes a scraping member having a foot and a tip having a scraping edge. The scraping member is formed from an elastomeric material. The scraper blade also includes a base member that is adapted to be attached to the cross shaft of the conveyor belt cleaner. A resiliently flexible connector member extends between the base member and the foot of the scraping member. The connector member has a first end embedded within the foot of the scraping member and a second end embedded within the base member. A hinge member formed from an elastomeric material extends between the base member and the foot of the scraping member and embeds the portion of the connector member located therebetween. The flexible connector member enables the scraping member to resiliently pivot with respect to the base member about a pivot axis without any movement of the base member.

Abstract: A conveyor belt cleaner and tensioner assembly adapted to be attached to a cross shaft. The conveyor belt cleaner and tensioner assembly includes a mounting base adapted to be mounted to the cross shaft and an arm member having a first end and a second end. The first end of the arm member is pivotally attached to the mounting base for pivotal movement about a pivot axis. A scraper blade is attached to the second end of the arm member. A gas spring tensioner has a first end pivotally attached to the mounting base and a second end pivotally attached the arm member. The tensioner includes a housing and a ram having a first end located within the housing and a second end located externally of the housing. The ram is extendable and retractable with respect to the housing to thereby pivot the arm member and the scraper blade about the pivot axis. The scraper blade includes a metal scraping tip having an elastomeric wear-in tip.

Abstract: A conveyor belt cleaner scraper blade for cleaning the surface of a conveyor belt. The scraper blade includes a base member adapted to be attached to a cross shaft of a conveyor belt cleaner and a wear section which extends outwardly from the base member to a scraping tip. The wear section includes a plurality of temperature sensors located along the length of the wear section, a plurality of wear sensors located along the length of the wear section, and one or more strain gage sensors located along the length of the wear section. Each of the sensors is in electrical communication with an electrical transmitter member that is adapted to provide an electrical output signal to a computer. The temperature sensors provide an indication of the temperature of the wear section at the location of each temperature sensor. The wear rate sensors provide an indication of the location of the scraping tip with respect to the base member as the wear section wears away and the tip moves closer to the base member.

Abstract: A conveyor belt scraper tensioner consisting of a blade mounted on a rotatable axle and rotatably biased into the conveyor belt by means of a folded elastomeric biasing medium affixed at one end to a fixed flange and affixed at the other end to a rotatable flange mounted on said scraper blade axle. Typically one tensioning device would be used on each scraper blade axle, although dual devices mounted at each end of the scraper blade axle may be employed when desired. Additionally, the scraper blade tensioner may be fitted with a movement limiting chain to prevent the scraper blade from being drawn into and gouging the conveyor belt as the blade wears or when encountering material tightly adhered to the conveyor belt surface. A slab of gum rubber is the preferred elastomeric biasing material, however other suitable elastomeric materials may be employed.

Abstract: A scraper blade for a conveyor belt cleaner including a mounting base and a scraping tip. The scraping tip includes a bottom end attached to the mounting base, a corrugated front surface extending from the bottom end to a serrated first edge, and a corrugated rear surface extending from the bottom end to a serrated second edge. An end wall extends between the first edge and the second edge. The serrated first edge is adapted to be placed in scraping engagement with the belt of a conveyor to remove adherent material.

Abstract: Belt cleaning apparatus includes a scraper blade mounted to a blade holder and urged against a belt for moving and/or removing material carried thereby. The blade includes a pair of flexible legs or skirts that engage the blade holder in snap-on/snap-off fashion. A tensioner includes inner and outer collars engaging the blade holder and a housing and a torsion spring between the collars tensions the blade. The housing engages one of the collars such as by a locking handle for fixing the spring tension and also serves to shield the tensioner from debris. The apparatus may be easily and quickly disassembled and assembled without tools, may be constructed of food-grade materials, and is “open” for ease of cleaning.

Abstract: A mounting arrangement for removably mounting a conveyor belt cleaner scraping member to a support member. The mounting arrangement includes first and second mounting members adapted to be attached to the support member. Each mounting member includes one or more apertures. A base member is adapted to be attached to the scraping member. The base member includes one or more bores adapted to be aligned with a respective aperture in each mounting member. The bore includes inwardly projecting first and second annular ribs. A mounting pin having a shank is adapted to be inserted into the apertures of the first and second mounting members and into the bore of the base member to thereby connect the base member to the mounting members. The shank of the pin includes a first annular groove adapted to receive and interlock with the first rib of the base member and a second annular groove adapted to receive and interlock with the second annular rib of the base member.

Abstract: A conveyor belt cleaner and tensioner assembly including a conveyor belt cleaner and a conveyor belt cleaner tensioner. The conveyor belt cleaner includes a scraper blade assembly having a mounting member and a scraper blade. The mounting member includes a base member adapted to be attached to a cross shaft and first and second flanges extending outwardly from the base member forming a first slot therebetween. The scraper blade includes a mounting base having a bore through which the mounting member extends, second and third slots adapted to receive the first and second flanges of the mounting member, and a third flange adapted to be inserted in the first slot of the mounting member such that the scraper blade is rotatably attached to the mounting member. The tensioner includes a support arm rotatably attached to a rotatable tensioning rod and a pivot arm pivotally attached to the support arm which receives the cross shaft. A biasing member extends between the support arm and the pivot arm.

Abstract: A conveyor belt scraping apparatus comprises a blade having a blade edge biased against a conveyor belt. The blade is supported at its base and has a web extending from the base to support the blade edge. The web has at least one groove therein substantially parallel to the blade edge to define a tensioning region at the narrowed region of the web, whereby the blade may be biased and tensioned without need for external biasing and tensioning arrangements. Preferably, there are plural grooves in the web. Also preferably, the plural grooves are of different sizes so as to provide a progressive rate to the spring characteristic of the tensioning region of the web. In addition, a groove may have a cushioning material therein so as to provide cushioning of the blade.

Abstract: The present invention concerns a conveying device with an endless conveyor belt (10), which has catches (14) extending essentially transverse to the conveying direction (12).

Abstract: An embodiment of a belt scraper constructed according to principles of the invention includes a blade mounted on a blade holder. The blade holder is mounted on a shaft. Each end of the shaft is retained by a pillow block. Each pillow block is mounted on a bracket. Each bracket mounts on a non-moving portion of a conveyor belt frame. The pillow blocks are adjusted to orient the blade relative to and urge the blade against a conveyor belt for optimal debris removal.

Abstract: The present invention describes a tensioner that automatically increases the effective torque on the support arm over time. The tensioner is comprised of a torsion cam engaging the support arm of the scraper blade assembly, a torsion cable engaging the cam, a tension rod with a spring surrounding the rod secured to the torsion cable. Over time, as the scraper blade wears down and the spring force decreases, the torsion cam is slowly rotated to increase the torque arm of the invention and thereby increase the effective torque on the support arm and compensate for the decrease in spring force. This invention may be adapted for use with any existing scraper blade assembly.

Abstract: A conveyor belt cleaning apparatus with an elastomeric biasing means. Some given number of the apparatus are seated on a horizontal mount which spans the width of a conveyor belt. Each unit is hollow. This void is loaded with filler material. A metallic blade seat is integral with the elastomeric material and configured to accept a blade.

Abstract: The invention relates to a device for cleaning heavily soiled conveyor belts and is distinguished by a fluid-loaded transversely acting stripper (1) which is arranged transversely with respect to the movement of the conveyor belt, at the point of reversal of the belt or shortly below said point.

Abstract: A belt cleaner is provided in which scraping portions of scrapers are constantly pressed against a surface of a conveyor belt with uniform force throughout all cleaner units. The belt cleaner includes an array of the plurality of the cleaner units arranged in the transverse direction of the conveyor belt, and a pressure generator for combined with the cleaner units. The pressure generator includes respective support sections which are engaged with corresponding working portions of the scrapers of the cleaner units to integrally move with the forward and backward motion of the scrapers with respect to the belt surface, a pressure passage for causing the support sections to communicate with each other, and a fluid completely filled in the pressure passage.

Abstract: Two embodiments of a conveyor belt scraper are disclosed herein, with each including an inflatable bladder urging a scraper blade against the belt when the bladder is inflated, thereby providing even and uniform pressure for the blade against the belt. In a first embodiment, the scraper blade bears against a free section of the belt, with a guide extending across the opposite side of the belt to support the belt. The bladder is enclosed in a housing, with a blade slot formed in the upper portion thereof. A single belt scraper blade is placed within the housing and extends through the blade slot. A second embodiment urges the blade edge against the belt as the belt passes over a roller on the conveyor line. The blade has a double concave arcuate underside, with the two concave curvatures defining a pivot fulcrum therebetween. The inflatable bladder resides in the concave curvature opposite the scraping blade edge, and urges the blade edge against the belt as the bladder is inflated.

Abstract: The invention provides a torsion holder for a conveyor belt scraper which includes a first tubular member with formations which are engageable with fixed structure, a second member which is located at least partly inside the first member, torsion mechanism between the first and second members for resiliently restraining relative rotational movement of the second member inside the first member, a scraper blade carrier, and attachment mechanism engaged with the second member and the scraper blade carrier.

Abstract: A conveyor belt cleaner is provided having a scraper blade arranged transversely on the lower run of the belt. The scraper blade can have at least one blade or a plurality of blades pivotally connected together. A shaping element having a non-linear configuration adjusts the profile of the scraper blade to match the configuration of the shaping bar. A biasing element connected with the vertical controller biases the scraper blade towards the belt maintaining the scraper blade in contact with the belt. A vertical controller raises and lowers the position of the scraper blade to provide for angular adjustment of the scraper blade relative to the belt.

Abstract: A conveyor scraper includes a support structure and a scraper blade which is mounted to the support structure by a mounting element so that it is movable to a limited extent relative to the support structure. A biasing element acts between the support structure and the scraper blade to ensure contact with an adjacent conveyor. A mounting element that mounts the scraper blade to the support structure includes a zone of weakness that permits the scraper blade to deflect laterally in the event of impact by an irregularity on the passing conveyor belt surface.

Abstract: A conveyor belt scraper which includes an elastomeric base member, a holder engaged with the base member and a wear resistant scraping insert engaged with the holder.

Abstract: The invention concerns a conveyor belt scraper used to scrape debris from the surface of a conveyor belt (10). The scraper incorporates a segmented scraper blade which includes individual blade segments (22) arranged side by side with one another such that in use each blade segment scrapes a portion of the width of the belt surface. For blade segment there is a blade segment support (28) on which the associated blade segment (22) is supported. Each blade segment support (28) includes pivotally interconnected links (30, 32, 34, 36) forming a closed parallelogram linkage. A support structure (42, 82) is provided to support the parallelogram linkages in side by side relationship adjacent the belt surface. Gas-inflatable biasing means (44, 58) act on the parallelogram linkages such that inflation thereof causes the linkages to deform in a manner to displace the blade segments (22) in a direction lengthwise of the belt (10) and towards the belt surface.

Abstract: A reversible belt scraper blade is supported on the support arms of a belt scraper by attachment fittings that permit the blade to be rotated, in place, while the weight of the blade is carried on the belt scraper arms.

Abstract: An apparatus is provided for preloading a scraper blade against a conveyor belt in a conveyor cleaning system. The apparatus includes a blade support adapted to mount a scraper blade for engagement with a conveyor belt, a torsion member including a first end segment spaced from a second end segment along an axis, and a stop engageable with the second end segment to maintain the torsion member in a preloaded condition with the second end segment rotated about the axis relative to the first end segment to generate a preload between a scraper blade mounted on the blade support and a conveyor belt. In one form, the first end segment has an essentially polygonal cross section engageable with the blade support to restrict rotation of the first end segment relative to the blade support.

Abstract: Disclosed herein is an invention having to do with a method and apparatus for supporting and tensioning cleaning blades that are in contact with a moving conveyor belt. The method and apparatus disclosed herein comprise locating an elongate support bar under the return side of a conveyor belt and positioning its length transverse to the direction of travel of the conveyor belt. The support bar has mounted spatially along its length several individual spring loaded piston-cylinder assemblies. Support plates are connected to the extensible end of each piston-cylinder assembly and cleaner blades are removably attached to the support plates. Each piston/cylinder assembly has an adjustable spring tensioning adjustment for the proper tensioning of each blade.

Abstract: A self-indicating tensioning device for a scraper blade includes a flat spring coupled at one end to a rotatable shaft which supports the blade and coupled at it's other end to an adjusting mechanism. The adjusting mechanism is operable to exert a force on the flat spring which in turn applies a torque to the rotatable shaft for displacing the scraper blade. An indicator rod has one end fixed to the rotatable shaft and the other end is free and located adjacent to a graduated indicator plate.

Abstract: A tensioning device for adjusting the contacting/cleaning force of a scraper blade on the surface of an endless conveyor belt is provided for use on a shaft supporting the scraper blade. The tensioning device allows the shaft to be rotated and locked in a position which is very close to its optimum cleaning position, thereby increasing the efficiency of the scraper assembly. The disclosed tensioning device has three collars with a spring located in between the rotatable collar and adjusting collar. Sequences of axially-directed apertures on the adjusting collar and the stationary collar move into and out of registry with each other as the adjusting collar is rotated. A locking pin is inserted through the aligned holes in the adjusting collar and the stationary collar when the desired amount of torsion is applied to the shaft.

Abstract: A scraper constituting a blade which is yieldingly deformable in such a manner as to be curved from a linear state to an arch shape is held by a holding groove of a holder. The holding groove of the holder is formed by a substantially parallel rail like holding groove which is gradually apart from an axis extending to a transverse direction of the belt as the holding wall goes from both ends of the belt to a central portion thereof. The scraper comprises a leg portion inserted into the holding groove of the holder, an extended standing portion projecting from the holding groove so as to be in contact with the surface of the belt and a head portion formed by thickening a thickness of said extended standing portion more than a thickness of the leg portion toward a returning direction of the belt, in which a jaw portion projecting beyond a side surface of the leg portion is formed by a lower portion of said head portion.

Abstract: An arrangement to strip unwanted matter from belt bands in conveyor belt installations, comprises a systems support attached to a supporting structure for the belt band and stripping members each having a scraper blade spring-loaded in the ready-to-operate position against the belt band in a peeling fashion, and can, when the scraper blade encounters obstacles adhering to the belt band, pivot away and subsequently pivot back into the ready-to-operate positions. The blade support is supported by a pivot bearing having a limited pivot angle such that the scraper blade can adjust to changes in inclination of the belt band.

Abstract: A composite scraper blade which is suitable for use with a primary belt scraper which includes a support formed from a first material and an abrasion resistant scraping element which is formed from a second material and which is engaged with the support.

Abstract: A conveyor belt cleaning device provides a belt scraper blade and a roller juxtaposed to the blade on its downstream side, relative to the direction of conveyor belt travel. Frictional contact between the moving conveyor belt and roller drives the roller. The scraper blade scrapes stringy materials from the belt and the roller pinches trailing stringy materials between the belt and the roller, pulling such materials from the blade.

Abstract: A conveyor belt cleaning arrangement is provided in which belt cleaner blade(s) are positioned relative to a conveyor belt, which arrangement includes a mounting bracket, a transverse pivot support tube, a blade mounting tube with a rising male projection to engage a complementary female slot in the bottom of the blade, a blade with a female slot in the bottom to receive the male projection on the blade support tube, connecting arms and a pressure roller mounted on the opposite side of the belt to flatten and hold the belt in position, all of which act to clean material adhering to a moving conveyor belt when the cleaner blade is forced into transverse engagement with the belt.

Abstract: A plough scraper assembly for use with a conveyor belt which includes a plough scraper, first and second overhead supports which are spaced from each other in the direction of belt movement, first and second levers which are respectively pivotally attached at their upper ends to the first and second supports and, at their lower ends, to the plough scraper, the levers being inclined downwardly in the direction of belt movement, and a spring which biases the scraper towards the belt surface.

Abstract: A scraper blade assembly utilizes an over-center spring to bias the scraper blade assembly both into engagement and out of engagement with a conveyor, such as a moving belt, on a device for separating solids from liquids. The over-center spring extends between a fixed attachment point on the device and a pivoting attachment point on a handle secured to the scraper blade assembly. The invention is particularly applicable to belt filter presses and gravity belt sludge thickeners. An over-center spring may be secured to both ends of the scraper blade assembly to minimize torsional deformation of the scraper blade by the material being separated from the moving belt.

Abstract: A device for scraping the return side of a conveyor belt, includes an elongated block of a resilient material which engages a support profile, said elongated block having a central zone through which it engages the support profile and, on either side of this central zone, a zone wherein the elongated block diverges from the support profile.

Abstract: A conveyor belt scraper which includes a bracket which is formed with two arms which extend in opposing directions, and two base pieces which are respectively engageable with the arms.

Abstract: A conveyor belt scraper blade support assembly having an elongate support bar extending transversely in excess of the width of the conveyor belt, external foundation support brackets operatively arranged to engage each end of the support bar, extensible/retractable device located between the brackets and the support bar arranged for controlled reciprocal movement of the support bar toward and away from the support brackets, spring loaded piston/cylinder assemblies mounted spatially along the length of the support bar for urging the pistons toward the conveyor belt, a blade attachment device on the piston for attaching and supporting a scraper blade thereto, a scraper blade mounted in the blade attachment device, and shock absorbing device between the brackets and the support bar.

Abstract: A conveyor belt scraper blade arrangement adapted for use in cleaning the surface of a conveyor belt. The scraper blade includes a mounting base having a first mounting member and a second mounting member. A scraping member having a mounting member and a scraping edge is removably attached to the mounting base by a restraining arm member and a spaced apart support arm member. The support arm member includes a first end that is removably attached to the first mounting member of the mounting base and a second end that is removably attached to the mounting member of the scraping member. The restraining arm member includes a first end that is removably attached to the second mounting member of the mounting base and a second end that is attached to the scraping member. The support arm member is selectively removable and replaceable from the scraper blade.

Abstract: A conveyor belt scraper in which a row of scraping blades 38 is held clamped between upper flanges 30,30' of a resilient buffer 28,28'. Lower flanges 32,32' of the buffer are secured to opposite sides of a flange 40 of a supporting beam 42. Bowed side walls 34,34' of the buffer, extending between the lower flanges and the upper flanges, form a hollow structure housing the beam 42. The hollow structure is oversize compared with the beam cross-section so as to leave clearance space 46 between upper surfaces of the beam and upper portions of the buffer. The buffer components are moulded of rubber and some movement of the resiliently-supported blades, in a direction toward and away from the conveyor belt, is permitted by compression of the hollow structure into the clearance space 46.

Abstract: A servicing arrangement is provided for a conveyor belt cleaner. The servicing arrangement includes an elongate mandrel member having a first end and second end. The second end of the mandrel member is adapted to be attached to a support such that the mandrel member is retained by the support in a cantilevered manner. A support member is adapted to be positioned over the mandrel member by sliding the support member over the first end of the mandrel member. The support member is selectively slidable along the mandrel member to selectively remove or selectively mount the support member on the mandrel member. The support member is adapted to receive and support a conveyor belt cleaner. An operator can easily remove the conveyor belt cleaner from the mandrel member for service or replacement of the conveyor belt cleaner from the outside of a conveyor housing during conveyor operation when a suitably designed tensioner with a release mechanism is used to protect the operator from cleaner blade pull through.

Abstract: A conveyor belt cleaner for cleaning one surface of a conveyor belt of length L and transverse width W includes a cleaner blade formed as an elongated strip of flexible elastomer, usually rubber or urethane. The blade, preferably of constant thickness, has a width much smaller than L and a length greater than W. The blade extends across the conveyor belt and has fasteners at its opposite ends. A tensioner, connected to one of the blade fasteners, applies a longitudinal tensioning force to the cleaner blade to maintain the cleaner blade in contact with the surface of the conveyor belt. In the preferred construction two tensioners are used, at opposite ends of the cleaner blade.

Abstract: Disclosed is a method and apparatus for cleaning a conveyor belt. The invention comprises locating a support bar under the return side of a conveyor belt and positioning it transverse to the direction of travel of the conveyor belt. The support bar has mounted on it several individual piston-cylinder apparatus which have pneumatic or hydraulic connections to a manifold assembly. Support plates are connected to the extensible end of the piston-cylinder apparatus and cleaner blades are removeably attached to the support plates. The cleaner blades and piston-cylinder apparatus are arranged adjacently with one another along the length of the support bar, and the blade assemblies have side edges with tongue and groove connections so that each adjacent cleaning blade has a sliding engagement with one another. Connecting to the manifold assembly on the support bar are pneumatic supply and return lines that emanate from a pressure source having a regulator and a two way valve.

Abstract: A scraping apparatus 1 for use with a belt conveyor. The scraping apparatus 1 comprises a base portion 3 adapted for engagement with a holder 7 disposed to support the apparatus 1 adjacent a conveyor belt 2. A blade portion 10 is adapted to scrape the surface of the belt 2 and, thereby, remove residual material. An intermediate web portion 15 is resiliently deformable to permit a limited degree of relative displacement between the blade portion 10 and the base portion 3, to accommodate surface irregularities in the belt 2.

Abstract: The disclosed conveyor-belt cleaning assembly includes a ribbed cleaning roller that is restrained by a blocking device against moving closer to the belt than an operating position at which the ribs of the cleaning roller sweep at high speed along or close to the belt, while spring bias acting on the cleaning roller firmly but yieldably biases the cleaning roller toward the blocking device. The spring bias and the blocking device are adjustable independently of each other so that the operating position can be adjusted to compensate for wear of the ribs while the spring bias remains unchanged. The cleaning roller is supported by composite spherical/rotary bearings that allow the roller to tilt. A hole in a frame plate accommodates removal and insertion of the cleaning roller lengthwise without disassembling the frame plate when the cleaning roller is to be replaced.