| 摘要 |
<p>Stoning machines are modified by establishing a second stoning chain outside the disc carrying cams, into which engage cutter nozzles: actuating chain over crown wheel solid with its own plate and extending between the stoning drum and a tensor pinion situated below the drum. The links of the chain correspond with the cutter nozzles of the drum and are provided with axial orifices through which pass the nozzles.</p> |
