Abstract: A flame-resistant buffing wheel and a method of making thereof. The buffing wheel is comprised of a buffing material which has been treated with an aqueous flame-retardant solution, and allowed to dry. The treatment may take place either before or after the buffing wheel is assembled.

Abstract: A ganged buffing wheel assembly driven by a shaft having keys. The assembly is formed of a plurality of axially coextensive cartridges keyed to the shaft. The cartridges are of light weight such that they can be manipulated by a workman without injury to himself. Each cartridge, typically, includes a sleeve of pressed paper with keyways of white pine on its inner surface and with buff sections separated by spacers of pressed paper on its outer surface. The keyways extend along the whole length of each sleeve so as to be engaged by the keys on the shaft along a large area of minimized stress. In assembling a cartridge, the buff sections are stacked on the sleeve supported on a spacer at one end which is secured to the shaft. The stack is compressed with adhesive between each buff section and the spacers on each side and in the compressed state secured to each other and to the sleeve and anchored through the spacer at the other end.

Abstract: A buffing wheel in which the strap of ductile metal encircles and abuts the circular body member from whose peripheral edges the teeth which engage the annulus of buffing fabric extend. Each pair of successive teeth defines between them an angle having a sharp apex at their junctions with the body member. In use, the buffing wheel is rotated at a high speed so that high centrifugal tensile force is transmitting through the teeth to their junctions with the body member. This force is concentrated at the apeces formed between successive teeth. The strap absorbs the concentrated stress, in part, preventing cracks in the body member from developing, but predominantly preventing cracks, even cracks which sever the body member, which do develop from spreading and causing catastrophic failure of the ring and an explosion of a buffing assembly including the ganged buffing wheels.

Abstract: A work-polishing tool including a rigid annular core having at spaced intervals around its periphery strips of readily-deformable material such as sheet rubber. These strips extend radially outwardly from the core and each has leaves of abrasive fabric secured to its extending end. The inner ends of the leaves are spaced an appreciable distance, for example, one fourth inch, from the outer periphery of the core. The core may be formed of an annulus of thin spacers in which the strips of readily-deformable material are interspersed at spaced intervals and which is rigidified or solidified by injecting adhesive, for example, an epoxy resin and a hardener, between the spacers and between the spacers and the adjacent strips and permitting the adhesive to solidify. The strips may be folded over so that they are of U-longitudinal section and the leaves secured to the arms of the U. A loop is then formed into which a block of cardboard or the like is inserted.