| 摘要 |
This invention relates to floor treatment machines, e.g. for scrubbing and polishing floors comprising a pair of driving wheels with independent speed control, a pair of independently movable manually operable control members mounted side-by-side on the machine, with each of said control members being operably connected to an individual electrical component forming part of the speed control for one of the driving wheels, whereby synchronized movement of the control members provides equal adjustment of the wheel speeds, whereas differential movement of the control members provides a steering effect. When operated by a walking operator, such machines have been found to exhibit a tendency to hunt for a selected speed, and in order to avoid this damping means is provided between the operator's control and the electrical components to reduce the sensitivity of the mechanism. |
