| 摘要 |
<p>Pieces of timber are conveyed in their transversal direction, placed longitudinally in a selected position for the cutting of the butt end, and then transferred in the direction of the top end to a selected position for the trimming of the top end. After the cutting of the butt end the piece of timber is moved in the direction of the top end against a selectively chosen stop, which is at such a distance from the cutting line of the top end trimming saw as corresponds to the desired full multiple of the linear measuring unit to be cut off the top end plus the greatest trimming margin, whereafter the piece of timber is moved, before arriving at the top end trimming saw, back in the direction of the butt end against a selectively chosen stop, which is at such a distance from the cutting line of the top end trimming saw as corresponds to the length of the piece of timber given in full linear measuring units minus the said full multiple of the linear measuring unit to be cut off the top end.</p> |
