Abstract: A portable planar abrading or honing apparatus embodying components including modified elongated planar support block with flared ends each with holding arrangements and attached to the blocks planar surface are optional material support bases that assist various tensioned flexible abrasive material, described as abrasive tapes that facilitate manual grinding or honing and sharpening of edges upon the abrasive surface.

Abstract: The present invention relates to a rust removing device for an elevator guide rail and aims at solving a problem of great time and labor taken and insufficient rust removal due to that rust of existing guide rail is removed manually. The rust removing device comprises: a support; a rust removal rack, mounted on the support and covering guide rail; and a rust removal material, arranged on a U-shaped inner wall of the rust removal rack and fitted with a surface of the guide rail. The rust removing device of the present invention has advantages that the rust of the guide rail is removed automatically instead of being removed manually, featured by a high rust removing speed, energy saving, simple maintenance, and less influence on users due to long-time service stop because of rust removal.

Abstract: The present invention discloses a grinding brush fixing device applying to a pneumatic tool for surface treatment. The spacing between the fixing arms and arc plates of the brush holder is reduced. Thereby, the press-fit face of the axially-extending fixing arm can press the brush collar onto the first press-fit edge and second press-fit edge, which are at two sides of the notches between two axially-extending arc plates. Further, a flexible gasket is radially placed in a space between the fixing arms and the arc plates. When the fixing disc is fastened to the brush holder, the flexible gasket and the brush collar are tightly compressed and firmly secured. Thus, force can be uniformly applied onto the brush collar and the bristles. The present invention can promote the stability of brush's rotation, generate straighter ground strips, prolong the durability of the grinding brush and grinding brush fixing device, and promote the grinding efficiency.

Abstract: The combination of an abrasive finishing device and a support pad therefor. The support pad includes circular plastic plates formed to define a depressed center. A fastening member permanently affixed to the abrasive finishing article is attached in such a manner as to form a depressed center section for the abrasive finishing article which is received within the depressed center section of the support pad.

Abstract: A tool for co-operating with a fixing device wherein the tool comprises a tool body in the form of a circular disk, with a central opening and a radially inwardly facing locking surface. The fixing device comprises at least one radially outwardly facing projection of a locking element, which can be actuated manually and with which the fixing device can be releasably connected to the tool. In the locking position the at least one radially outwardly facing projection of the fixing device engages over the inwardly facing locking surface of the tool. The tool body is axially secured and held non-rotatably relative to the fixing device. The at least one radially outwardly facing projection of the fixing device and a support for the tool are arranged axially displaceably relative to each other, wherein the axial displacement travel is blockable by a centrifugal force device.

Abstract: A holding apparatus for grinding members includes two clamping disks that have respectively a plurality of anchor plates and a plurality of anchor slots on different perimeters. The anchor plates and anchor slots may be wedged to form a mechanical interference between the two clamping disks to hold a grinding member securely. The apparatus thus constructed can enhance the structural strength of the grinding member and prevent the grinding member from deforming at high speed rotation.

Abstract: A flap disc includes a backing disc having an inner radial portion and abrasive flaps secured to an outer radial portion of the backing disc in an overlapping manner. First and second metal reinforcement rings include a body contacting one of front and rear surfaces of the backing disc adjacent a central opening. A threaded nut includes a body having an outer surface defining a shoulder and a retainer connected to the body. The shoulder contacts the second ring adjacent the central opening of the backing disc. The retainer is rolled outwardly to contact the first ring such that the nut and the rings are secured to the backing disc.

Abstract: A reusable mounting device which includes a support member having a support pad (32) secured to a hollow cylindrical body (42) by way of a compression ring (46). The hollow body defines a recess which receives a nut (18) that is adapted to protrude through a central aperture in an abrasive disc (1) and includes an irregular surface (22) providing an interference fit between the nut and the aperture in the disc. The nut extends into the hollow cylindrical member and includes an internal threaded bore adapted for threadable engagement with a drive member (30) which forms a part of or is attached to a portable power tool.

Abstract: An abrasive substrate is removably provided between a head portion and an abrasive member in a carry type abrasive machine. The abrasive substrate is constituted by a single synthetic resin molded member formed of the same material, and a hardness in a peripheral portion is set to be lower than that in a central portion excluding the peripheral edge portion. A difference in the hardness between the central portion and the peripheral portion is regulated by a concavo-convex surface formed on a surface at the fixing side to the head portion of the carry type abrasive machine. It is desirable that the concavo-convex surface should be constituted by a plurality of rib-shaped projections formed on the same plane. The abrasive substrate of the carry type abrasive machine can be manufactured inexpensively and can carry out a reliable and stable abrasion work.

Abstract: A sanding tool having a plate with opposite sanding and supporting sides, a handle mounted onto the supporting side of the plate, and at least one fastening device operatively connected to the supporting side of the plate for fastening a sandpaper onto the sanding tool in such a manner that most of the sandpaper rests against the sanding side of the plate. Each fastening device has a clamping device and a guiding device. The clamping device is movable with respect to the supporting side of the plate between a first position where the clamping device is away from the supporting side and a second position where the clamping device rests operatively against the supporting side. The guiding device is used for guiding movement of the clamping device along a predetermined path between the first and second positions. In operation, a portion of the sandpaper is removably clamped between the supporting side of the plate and the clamping device when the latter is in the second position.

Abstract: A rotary finishing tool, such as a buffing pad, utilizes a connector assembly for demountable attachment to a powered rotary backing plate. The finishing tool is attached to the front face of a backing disc and the rear face of the backing disc includes a first piece of the connector assembly, the second piece of which is carried by the backing plate. The first and second connector pieces include complementary driving surfaces and complementary locking surfaces which respectively interengage in response to linear movement bringing the two connector pieces together and relative radial movement between the locking surfaces which are preferably resiliently biased.

Abstract: A reusable quick change mount including a support unit or backing member and a threaded retainer member or nut having a barrel which is received within a bore in the support unit. A resiliently deformable member is disposed within the bore of the support unit and frictionally engages the outer surface of the barrel on the nut to capture an abrasive device which is disposed between a flange extending outwardly from the nut and the support member. The surfaces on the support member and the flange which engage the abrasive device include anti-slip surfaces.

Abstract: A sanding device for sanding substantially planar surfaces and substantially non-planar surfaces including a first section and a second section releasably coupled thereto. The second section for supporting a piece of sandpaper having ends captured between the engagement of the first and second sections. The first section also capable of being used for retaining sandpaper absent the second section.

Abstract: A grindstone adapter, in which a drive force transmitted portion and plural stop projections are formed on a central boss of a disc-like pad to which a grindstone disc or a grindstone is attached, a drive portion fitting in the drive force transmitted portion and stop concave portions engaging with the stop projections are formed on a drive-side coupling fitting in the boss, and a depression cylinder which is urged by a spring toward a side for maintaining an engaging state between the stop projections and the stop concave portions, is formed on the drive side coupling.

Abstract: A hand sanding block is formed with two blocks, which may be of equal or unequal lengths of like cross section and disposed in coplanar relationship with opposed inner ends. The blocks are freely movable towards and away from each other almost to the point of separation, by means of a pair of spaced dowel pins projecting from one block for telescopic engagement in corresponding spring loaded sockets in the other block and are normally held apart in spaced relationship by the springs in the sockets. For mounting and removing an endless sanding belt the blocks are pressed together so the inner ends are in abutting relationship and once the belt is in place, the holding pressure is released so the blocks can move apart to provide tension on the belt.

Abstract: A hand tool for the use in sanding, polishing or finishing of articles of manufacture including wood, plastic and metal articles. A length of abrasive material, such as sandpaper or emery cloth, is secured to the tool with a portion of the length of abrasive material retained in a storage area. The abrasive material is secured to an extended blade which may be sized and shaped as required. The blade may include ridges or nodules to retain the abrasive material in position on the blade while the tool is being used. A securing member slides over the blade and the abrasive material to frictionally secure the abrasive material to the tool. As required, new abrasive material may be pulled from the storage portion and secured to the blade.