| 摘要 |
<p>The spraying unit has a drive saddle which causes rotation of a tyre suspended on two rollers, in which a spray pistol is fixed to a cantilever arm on one arm of a two-arm lever pivotably supported transversely to the tyre, the other arm of the lever carrying a counterweight to balance the weight of the spray gun and the cantilever arm, and in which an oil-damped air motor is provided to swing the two-arm lever. The path of the spray gun is defined by two adjustable limit switches.</p> |
