| 摘要 |
The brush disc (5) is connected centrally through a flexible joint (3, 4) to a hollow vertical shaft (2), alternately motor-driven in opposite directions about the axis of symmetry (12). Solvent is supplied through the shaft, joint and disc, with final distribution through radial channels or holes in the disc, to the bristles. Two or more rollers (6), freely mounted on horizontal axes, hold the plate (10) firmly against the base (8) during brushing. |
