| 摘要 |
<p>BRUSHING TOOL A circular disc has a plurality of notches in the rim of the disc at approximately uniformly spaced locations. In one embodiment of the invention, the disc has a plurality of circumferentially-disposed perforations adjacent the rim, the perforations being located between the notches and the center of the disc, with each perforation being adjacent to and in radial alignment with a notch. Wire knots extend through and are anchored in each perforation and are supported by the notch adjacent to and in alignment with the perforation, whereby the side walls of the notch limit pivotal movement of the knots in the plane of the disc. The invention also includes means for coupling the brushing tool to a drive means for imparting rotary motion to the disc. In a second embodiment of the invention, the perforations are adjacent to and in offset relation with respect to two consecutive notches. Wire knots extend through and are anchored in each perforation and are supported by the rim of the disc between the two adjacent notches, whereby the rim of the disc limits pivotal movement of the knots in the plane of the disc.</p> |
