Abstract: An abrading wheel such as a rasp hub for use in tire retreading machines includes two generally circular end, or side, plates with plural spaced mounting pins extending between and coupled to the two spaced plates. Rasp blades arranged in stacks which are arranged end-to-end about the wheel's circular circumference. Disposed between and engaging each pair of adjacent blades is a spacer, which is also attached to the mounting pins. Each spacer is curved lengthwise to match the curvature of the blades and includes plural spaced upper and lower recesses disposed immediately adjacent to its pair of adjacent blades to allow air to freely pass over the entire length of each blade as the hub is rotated at high speed to dissipate heat from the blades during operation for increased blade reliability and longevity.

Abstract: An abrading wheel such as a rasp hub for use in tire retreading machines includes two generally circular end, or side, plates with plural spaced mounting pins extending between and coupled to the two spaced plates. Rasp blades arranged in stacks which are arranged end-to-end about the wheel's circular circumference. Disposed between and engaging each pair of adjacent blades is a spacer, which is also attached to the mounting pins. Each spacer is curved lengthwise to match the curvature of the blades and includes plural spaced upper and lower recesses disposed immediately adjacent to its pair of adjacent blades to allow air to freely pass over the entire length of each blade as the hub is rotated at high speed to dissipate heat from the blades during operation for increased blade reliability and longevity.

Abstract: Article and method of making an abrading wheel having a sintered metal core and radially inward openings having curved inner edges to reduce stress in operation and to improve the ability of the wheel to clear residue from the wheel during operation.

Abstract: A method and apparatus for finishing the surface of rubber or synthetic covered rollers (10) is disclosed. As seen in FIG. 3, a rotating hub (16) having a circumferential abrasion band (47) and an adjacent set of rasp blades (20) arranged end-to-end and extending circumferentially about the hub is used to progressively and sequentially removebands of surface material by cutting and then abrading as the hub and roller are rotated and one is moved axially relative to the other.

Abstract: A rasp hub for use in tire retreading machines includes two side plates with mounting pins extending between the plates. Rasp blades arranged in stacks are mounted on the mounting pins. The stacks extend end-to-end circumferentially about the hub. The center portion of the mounting pins is curved so that the cut profile of the blades is convex. The blades are inclined relative to a plane perpendicular to the axis of rotation to define a cut angle. The center planes of the mounting pins intersect, preferably close to the axis of rotation of the hub, to reduce deviation of the blades from the concentricity.