Apparatus and brush segment arrangement for finishing wheel brushes; and method

Claim 1

A cylinder brush finishing device comprising: (a) a cylindrical hub having opposite ends and an outer surface; said hub including a plurality of substantially parallel, longitudinal, slots in communication with said hub outer surface; each of said slots extending between said hub opposite ends; said hub outer surface having a first radius of curvature; (b) means mounting said hub for rotation about a longitudinal axis thereof; (c) a drive mechanism for selectively rotating said cylindrical hub; (d) a first arcuate substrate removably mounted on said hub and having first and second opposite surfaces and first and second side edges; said first arcuate substrate defining an arc between said first arcuate substrate side edges; said first arcuate substrate first surface being generally convex and said first arcuate substrate second surface being generally concave; said first arcuate substrate second surface having a radius of curvature smaller than said hub outer surface first radius of curvature, when said first substrate is not mounted in said finishing device; (e) a carpet of bristles secured to said first substrate to extend outwardly from said first substrate first surface; (f) at least one first substrate longitudinal root member projecting outwardly from said first arcuate substrate concave side and extending generally parallel to, and spaced from, said first substrate side edges; said first substrate root member being constructed and arranged for sliding engagement with a selected one of said cylindrical hub longitudinal slots by entering same at one of said hub end edges, to mount said first arcuate substrate to said cylindrical hub; (g) means distorting said first substrate second, concave, surface toward a radius of curvature approximately equal to said hub outer surface radius of curvature, when said first substrate is mounted in said finishing device; (h) a second arcuate substrate removably mounted on said hub and having first and second opposite surfaces and first and second side edges; said second arcuate substrate defining an arc between said second arcuate substrate side edges; said second arcuate substrate first surface being generally convex and said second arcuate substrate second surface being generally concave; said second arcuate substrate second surface having a radius of curvature smaller than said hub outer surface first radius of curvature, when said second substrate is not mounted in said finishing device; (i) a caret of bristles secured to said second substrate to extend outwardly from said second substrate first surface; (j) at least one second substrate longitudinal root member projecting outwardly from said second arcuate substrate concave side and extending generally parallel to, and spaced from, said second substrate side edges; said second substrate root member being constructed and arranged for sliding engagement with a selected one of said cylindrical hub longitudinal slots by entering same at one of said hub end edges, to mount said second substrate to said cylindrical hub; (k) means distorting said second substrate second, concave, surface toward a radius of curvature approximately equal to said hub outer surface radius of curvature, when said second substrate is mounted in said finishing device; (l) when said finishing device is operably assembled, said second substrate being oriented radially adjacent to said first substrate, with one of said first substrate side edges generally aligned parallel with and adjacent to one of said second substrate side edges; and, (m) means enabling said first and second substrates to be independently mounted on, and removed from, said cylindrical hub, while said hub is mounted in said finishing device.