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Title: |
1911 Article-John Lang & Sons, Lathe Carrier |
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Source: |
Machine Tools Commonly Employed In Modern Engineering Workshop, V1, 1911, pgs. 49-50 |
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Insert Date: |
5/28/2020 1:15:28 PM |
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The ordinary heart-shaped form of driving dog, illustrated in fig. 59, is so well known that no special description is necessary. Dogs of this kind are suited to the lighter classes of work carried between dead centres and are not sufficiently powerful for the heavy drives now required for many high-speed cutting lathes. In the lathe carrier (fig. 60) devised by Messrs. John Lang & Sons the work is gripped over a considerable portion of its circumference between the serrated and hardened steel jaws of the carrier, instead of being held at three points only, as in the case of the ordinary type of dog. The halves of the carrier are of mild steel, specially hardened at the gripping faces, and are held together at one side by a mild-steel hinge-pin, and at the other by a clamping bolt. Projections on the carrier engage the driving pins on the face-plate of the lathe and communicate the motion to the work. When the hinge-pin is inserted in the outer holes indicated, the capacity of the carrier is increased. |
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1911 John Lang & Sons, Lathe Carrier
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