| 摘要 |
<p>For operating on shoes marginal portions of which have broken seams, resulting in the possibility of the top portion of such seam being loose, a facility is provided for moving the tool (250) out of operative contact with such marginal portion while travelling in a first direction, in which the seam would be engaged with the top portion thereof "downstream" of the seam (thus giving rise to the possibility of the top portion being lifted by the tool), whereafter the tool and shoe are returned into operative contact and the direction of movement of the tool relative to the marginal portion is reversed so that the tool is caused to operate in the reverse direction progressively along the particular marginal portion, and then the tool is once more moved out of engagement with the shoe and moved in the first direction above the marginal portion which has been treated as aforesaid in the reverse direction, the tool and shoe once more then being returned into operative contact and the treatment of the marginal portions of the shoe with the tool moving in said first direction then being continued.</p> |
