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Trav′erse-drill.

1. A drill for boring slots. It or the work has a lateral motion after the depth is attained.

2. One in which the drill-stock has a traversemotion for adjustment, as in the figure following.

The machine (Fig. 6625) is specially adapted for drilling the pin-holes at both ends of links for suspension-bridges at the same time, so as to secure perfect uniformity in the distance between them. The standards a a which support the boring-apparatus slide in the bed b, enabling them to be adjusted to the required length. The links are put in place on one side of the machine, and when done removed at the other. The driving is effected by horizontal belts passing over guidepulleys and around a drum on the spindles.

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