Rotary brush

Claim 2

A rotary brushing tool adapted for mounting on a drive shaft, said tool comprising a plurality of substantially similar annular rotary brush elements, each of said elements comprising a relatively rigid, nonyieldable channelform member and brush bristle material anchored in the channel of said channelform member, said channelform member comprising a channelform portion forming said channel to open abaxially and a hub portion formed adaxially of said channelform portion in said member, said hub portion having a central shaft receiving opening, a first end, and a second end axially opposed to said first end, said second end shaped to telescope-fit over the first end of the hub portion of another of said brush elements, said brush elements fixedly joined end-to-end one to the other in coaxial alignment.

Claim 3

A rotary brushing tool adapted for mounting on a drive shaft, said tool comprising a plurality of substantially similar telEscope fitted individual annular rotary brush elements fixedly joined end to end, one to the other, in coaxial alignment, each of said elements comprising a unitary relatively rigid nonyieldable metal first member comprising a first channel forming flange portion and a first hub portion, said first hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary relatively rigid, nonyieldable metal second member comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially and parallel to said planes, said outer end of said first hub portion shaped for telescope-fit with said outer end of said second hub portion so that a plurality of said similar brush elements may be joined end to end in coaxial alignment as stated; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 4

A rotary brushing tool adapted for mounting on a drive shaft, said tool comprising a plurality of substantially similar telEscope fitted individual annular rotary brush elements fixedly joined end to end, one to the other, in coaxial alignment, each of said elements comprising a unitary relatively rigid nonyieldable metal first member comprising a first channel forming flange portion and a first hub portion, said first hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary relatively rigid, nonyieldable metal second member comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially and parallel to said planes, said outer end of said first hub portion shaped for telescope-fit with said outer end of said second hub portion so that a plurality of said similar brush elements may be joined end to end in coaxial alignment as stated; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 5

A rotary brushing tool as recited in claim 2 wherein the inner diameter of the outer end of said first hub portion corresponds to the outer diameter of the outer end of said second hub portion so that said brush elements may be joined end to end with the outer end of the second hub portion of one brush element received in the outer end of the first hub portion of another brush element.

Claim 6

A rotary brushing tool adapted for mounting directly on a drive shaft, said tool comprising a plurality of similar interlocking individual annular rotary brush elements fixedly joined end to end, one to the other, in coaxial alignment, each of said elements comprising a unitary first member comprising a first channel forming flange portion and a first hub portion, said first hub portion comprising a first axially extending portion and a radial shoulder portion extending from said first axially extending portion towards the hub axis, said hub portion having a central shaft receiving opening formed therein, said hub portion having an inner end and an outer end, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary second member comprising a second channel forming flange portion and a second hub portion having a central shaft receiving opening, said hub portion having an inner end and an outer end, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially, said outer end of said first hub portion shaped to interlock with the second hub portion of another of said substantially similar brush elements so that a plurality of said substantially similar brush elements may be joined end to end in interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 7

A rotary brushing tool adapted for mounting directly on a drive shaft, said tool comprising a plurality of similar interlocking individual annular rotary brush elements fixedly joined end to end, one to the other, in coaxial alignment, each of said elements comprising a unitary first member comprising a first channel forming flange portion and a first hub portion, said first hub portion comprising a first axially extending portion and a radial shoulder portion extending from said first axially extending portion towards the hub axis, said hub portion having a central shaft receiving opening formed therein, said hub portion having an inner end and an outer end, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary second member comprising a second channel forming flange portion and a second hub portion having a central shaft receiving opening, said hub portion having an inner end and an outer end, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially, said outer end of said first hub portion shaped to interlock with the second hub portion of another of said substantially similar brush elements so that a plurality of said substantially similar brush elements may be joined end to end in interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 8

A rotary brushing tool as recited in claim 4 wheRein said anchoring means comprises an anchor ring mounted between said first and second channel forming flanges, said ring having a plurality of prongs extending axially from its peripheral edge, alternate prongs extending in opposite directions and received and secured in slots in said first and second channel forming flanges, and wherein said brush bristle material comprises a plurality of bundles of brush bristles, each bundle being looped around one of said prongs with the free ends of said bristles extending abaxially out of the channel opening.

Claim 9

A rotary brushing tool as recited in claim 4 wherein said anchoring means comprises an anchor ring mounted between said first and second channel forming flange portions, said ring having apertures at spaced intervals about its periphery, and wherein said brush bristle material comprises a plurality of bundles of brush bristles each of which is looped through one of said peripheral apertures with the free ends of said bristles extending abaxially out of the channel opening.

Claim 10

A rotary brushing tool as recited in claim 4 wherein said anchoring means comprises an annular channelform anchor member of substantially U-shaped cross section defining an anchor channel for receiving brush bristle material, pairs of axially spaced and transversely aligned prongs projecting into the anchor channel at circumferentially spaced points thereabout, and a sheet metal endless annular locking ring arranged concentrically with respect to said anchor channel, said brush bristle material clamped in said locking ring, said locking ring having wall portions arranged with respect to the walls of said channel to securely clamp the brush bristle material therebetween.

Claim 11

A rotary brushing tool adapted for mounting on a drive shaft said tool comprising a plurality of substantially similar telescope-fit interlocking individual annular rotary brush elements fixedly joined end to end one to the other in coaxial alignment, each of said elements comprising a unitary first member comprising a first channel forming flange portion and a first hub portion, said hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion, in a direction generally parallel to a plane intersecting the axis of said hub portion at an oblique angle; a unitary second member comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central generally circular shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a plane disposed at an oblique angle to the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with their first and second channel forming flange portions generally parallel and adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially, said outer end of said first hub portion shaped to telescope-fit with the outer end of the second hub portion of another of said substantially similar brush elements so that a plurality of said brush elements may be joined end to end in telescopically fitting interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 12

A rotary brushing tool adapted for mounting on a drive shaft said tool comprising a plurality of substantially similar telescope-fit interlocking individual annular rotary brush elements fixedly joined end to end one to the other in coaxial alignment, each of said elements comprising a unitary first member comprising a first channel forming flange portion and a first hub portion, said hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion, in a direction generally parallel to a plane intersecting the axis of said hub portion at an oblique angle; a unitary second member comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central generally circular shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a plane disposed at an oblique angle to the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with their first and second channel forming flange portions generally parallel and adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially, said outer end of said first hub portion shaped to telescope-fit with the outer end of the second hub portion of another of said substantially similar brush elements so that a plurality of said brush elements may be joined end to end in telescopically fitting interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 13

A rotary brushing tool as recited in claim 8 wherein said first and second hub portions extend axially, adjacent axially extending hub portions of adjacent brush elements having similar inner and outer diameters, adjacent axially extending portions of adjacent brush elements being coaxially received one within the other.

Claim 14

An annular brush element for making a rotary brushing tool adapted for mounting on a drive shaft in brushing machinery, said tool comprised of a plurality of such brush elements similarly conStructed and fixedly joined end to end one to the other in telescope-fit interlocking coaxial alignment, said brush element comprising a channelform hub member and brush bristle material anchored in the channel of said channelform hub member, said member comprising a channelform portion and a hub portion having a central shaft receiving opening, a first end and a second end, said second end of said hub portion shaped to telescope-fit with the first end of the hub portion of another like brush element, so that said brush element may be fixedly joined end to end to another such brush element in telescopically fitting interlocking coaxial alignment.

Claim 15

An annular brush element for making a rotary brushing tool adapted for mounting on a drive shaft in brushing machinery, said tool comprised of a plurality of such brush elements similarly conStructed and fixedly joined end to end one to the other in telescope-fit interlocking coaxial alignment, said brush element comprising a channelform hub member and brush bristle material anchored in the channel of said channelform hub member, said member comprising a channelform portion and a hub portion having a central shaft receiving opening, a first end and a second end, said second end of said hub portion shaped to telescope-fit with the first end of the hub portion of another like brush element, so that said brush element may be fixedly joined end to end to another such brush element in telescopically fitting interlocking coaxial alignment.

Claim 16

A brush element as recited in claim 10 wherein said hub portion includes a radial shoulder portion extending radially inwardly and having a central shaft receiving opening with an inner diameter generally corresponding to the outer diameter of the drive shaft so that said rotary brushing tool is adapted for mounting directly on the drive shaft.

Claim 17

A brush element as recited in claim 10 wherein said channelform portion of said element extends abaxially from between said first and second ends of said hub portion in a direction generally parallel to a plane intersecting the axis of said hub portion at oblique angles, said channelform portion having an annular channel opening abaxially to receive said brush bristle material and direct such material abaxially in a generally flat layer lying generally parallel to said plane of said channelform portion, so that said brush bristle layer extends at oblique angles to the axis of rotation of said element.

Claim 18

An annular brush element for making a rotary brushing tool adapted for mounting on a drive shaft in brushing machinery, said tool comprised of a plurality of such brush elements similarly constructed and fixedly joined end to end one to the other in telescope-fit interlocking coaxial alignment, said brush element comprising a unitary first member comprising a first channel forming flange portion and a first hub portion, said first hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary second member comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially, said outer end of said first hub portion shaped to telescope-fit with the outer end of the second hub portion of another of said similarly constructed brush elements so that a plurality of such brush elements may be joined end to end in telescopically fitting interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 19

An annular brush element for making a rotary brushing tool adapted for mounting on a drive shaft in brushing machinery, said tool comprised of a plurality of such brush elements similarly constructed and fixedly joined end to end one to the other in telescope-fit interlocking coaxial alignment, said brush element comprising a unitary first member comprising a first channel forming flange portion and a first hub portion, said first hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary second member comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially, said outer end of said first hub portion shaped to telescope-fit with the outer end of the second hub portion of another of said similarly constructed brush elements so that a plurality of such brush elements may be joined end to end in telescopically fitting interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 20

A brush element as recited in claim 13 wherein at least one of said first and second hub portions includes a radial shoulder portion extending towards the hub axis.

Claim 21

A brush element as recited in claim 13 wherein said anchoring means comprises an annular channelform anchor member of substantially U-shaped cross section defining an anchor channel for receiving brush bristle material, pairs of axially spaced and transversely aligned prongs projecting into the anchor channel at circumferentially spaced points thereabout, and a sheet metal endless annular locking ring arranged concentrically With respect to said anchor channel, said brush bristle material clamped in said locking ring, said locking ring having wall portions arranged with respect to the walls of said channel to securely clamp the brush bristle material therebetween.

Claim 22

An annular brush element for making a rotary brushing tool adapted for mounting on a drive shaft, said tool comprised of a plurality of such brush elements similarly constructed and fixedly joined end to end one to the other in telescopic-fit coaxial alignment, said brush element comprising a unitary first member formed from a plastic material and comprising a first channel forming flange portion and a first hub portion, said first hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary second member formed from a plastic material and comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and to direct such material abaxially, said outer end of said first hub portion shaped to telescope-fit with the outer end of the second hub portion of another of said similarly constructed brush elements so that a plurality of said similar brush elements may be joined end to end in telescopically fitting interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 23

An annular brush element for making a rotary brushing tool adapted for mounting on a drive shaft, said tool comprised of a plurality of such brush elements similarly constructed and fixedly joined end to end one to the other in telescopic-fit coaxial alignment, said brush element comprising a unitary first member formed from a plastic material and comprising a first channel forming flange portion and a first hub portion, said first hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary second member formed from a plastic material and comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and to direct such material abaxially, said outer end of said first hub portion shaped to telescope-fit with the outer end of the second hub portion of another of said similarly constructed brush elements so that a plurality of said similar brush elements may be joined end to end in telescopically fitting interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said material in said channel.

Claim 24

A brush element as recited in claim 16 wherein said anchoring means comprises an anchor ring mounted between said first and second channel forming flanges, said ring having a plurality of prongs extending axially from its peripheral edge, alternate prongs extending in opposite directions and received and secured in slots in said channel forming flanges, and wherein said brush bristle material comprises a plurality of bundles of brush bristles, each bundle being looped around one of said prongs with the free ends of said bristles extending abaxially out of the channel opening.

Claim 25

A brush element as recited in claim 16 wherein said anchoring means comprises an anchor ring mounted between said channel forming flange portions, said ring having apertures at spaced intervals about its periphery, and wherein said brush bristle material comprises a plurality of bundles of brush bristles each of which is looped through one of said peripheral apertures with the free ends of said bristles extending abaxially out of the channel opening.

Claim 26

A brush element as recited in claim 16 wherein said anchoring means comprises an annular channelform anchor member of substantially U-shaped cross section defining an anchor channel for receiving brush bristle material, pairs of axially spaced and transversely aligned prongs projecting into the anchor channel at circumferentially spaced points thereabout, and a sheet metal endless annular locking ring arranged concentrically with respect to said anchor channel, said brush bristle material clamped in said locking ring, said locking ring having wall portions arranged with respect to the walls of said channel to securely clamp the brush bristle material therebetween.

Claim 27

An annular brush element for making a rotary brushing tool adapted for mounting on a drive shaft, said tool comprising a plurality of such elements similarly constructed and fixedly joined end to end one To the other in telescope-fit interlocking coaxial alignment, said brush element comprising a unitary first member formed of a plastic material comprising a first channel forming flange portion and a first hub portion, said hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion at an oblique angle; a unitary second member formed of a plastic material and comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central generally circular shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion at an oblique angle, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and to direct such material abaxially, said outer end of said first hub portion shaped to telescopic-fit with the outer end of the second hub portion of another of said similarly constructed brush elements so that a plurality of said brush elements may be joined end to end in telescopically fitting interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said brush bristle material in said channel.

Claim 28

An annular brush element for making a rotary brushing tool adapted for mounting on a drive shaft, said tool comprising a plurality of such elements similarly constructed and fixedly joined end to end one To the other in telescope-fit interlocking coaxial alignment, said brush element comprising a unitary first member formed of a plastic material comprising a first channel forming flange portion and a first hub portion, said hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion at an oblique angle; a unitary second member formed of a plastic material and comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central generally circular shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion at an oblique angle, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and to direct such material abaxially, said outer end of said first hub portion shaped to telescopic-fit with the outer end of the second hub portion of another of said similarly constructed brush elements so that a plurality of said brush elements may be joined end to end in telescopically fitting interlocking coaxial alignment; brush bristle material disposed in said channel; and means anchoring said brush bristle material in said channel.

Claim 29

A brush element as recited in claim 20 wherein said first and second hub portions extend axially, the inner diameter of said second hub portion being similar to the outer diameter of said first hub portion, so that the first hub portion of a brush element may be received within the second hub portion of another of said similarly constructed brush elements.

Claim 30

A rotary brushing tool as recited in claim 4 wherein said first plane intersects the axis of said first hub portion at an oblique angle.

Claim 31

A rotary brushing tool as recited in claim 7 wherein said first plane intersects the axis of said first hub portion at an oblique angle.

Claim 32

A rotary brushing tool adapted for mounting on a drive shaft, said tool comprising a plurality of substantially similar interlocking individual annular rotary brush elements fixedly joined end to end, one to the other, in coaxial alignment, each of said elements comprising a unitary first member comprising a first channel forming flange portion and a first hub portion, said first hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary second member comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially and parallel to said planes, said outer end of said first hub portion shaped to interlock with said outer end of said second hub portion so that a plurality of said similar brush elements may be joined end to end in interlocking coaxial alignment as stated; brush bristle material disposed in said channel; and means for aNchoring said material in said channel comprising an annular channelform anchor member of substantially U-shaped cross section defining an anchor channel for receiving brush bristle material, pairs of axially spaced and transversely aligned prongs projecting into the anchor channel at circumferentially spaced points thereabout, and a sheet metal endless annular locking ring arranged concentrically with respect to said anchor channel, said brush bristle material clamped in said anchor channel between said locking ring and said anchor member, said locking ring having wall portions arranged with respect to the walls of said channel to securely clamp the brush bristle material therebetween.

Claim 33

A rotary brushing tool adapted for mounting on a drive shaft, said tool comprising a plurality of substantially similar interlocking individual annular rotary brush elements fixedly joined end to end, one to the other, in coaxial alignment, each of said elements comprising a unitary first member comprising a first channel forming flange portion and a first hub portion, said first hub portion having an inner end, an outer end, and a central shaft receiving opening, said flange portion extending abaxially from the inner end of said hub portion in a direction generally parallel to a first plane intersecting the axis of said hub portion; a unitary second member comprising a second channel forming flange portion and a second hub portion, said second hub portion having an inner end, an outer end, and a central shaft receiving opening, said second flange portion extending abaxially from the inner end of said second hub portion in a direction generally parallel to a second plane intersecting the axis of said second hub portion, said first and second members fixedly joined in coaxial and radial alignment with said first and second planes parallel and said first and second channel forming flange portions adjacent to form an annular channel which opens abaxially to receive brush bristle material and direct such material abaxially and parallel to said planes, said outer end of said first hub portion shaped to interlock with said outer end of said second hub portion so that a plurality of said similar brush elements may be joined end to end in interlocking coaxial alignment as stated; brush bristle material disposed in said channel; and means for aNchoring said material in said channel comprising an annular channelform anchor member of substantially U-shaped cross section defining an anchor channel for receiving brush bristle material, pairs of axially spaced and transversely aligned prongs projecting into the anchor channel at circumferentially spaced points thereabout, and a sheet metal endless annular locking ring arranged concentrically with respect to said anchor channel, said brush bristle material clamped in said anchor channel between said locking ring and said anchor member, said locking ring having wall portions arranged with respect to the walls of said channel to securely clamp the brush bristle material therebetween.

Claim 34

A rotary brushing tool as recited in claim 24 wherein said first plane intersects the axis of said first hub portion at an oblique angle.