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Title: |
1911 Article-Webster & Bennett, Four-Spindle Drilling Machine |
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Source: |
Machine Tools Commonly Employed In Modern Engineering Workshop, V2, 1911, pgs. 16-18 |
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Insert Date: |
4/17/2020 1:39:05 PM |
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Four-spindle machines of the same general form are constructed with double driving arrangements, the spindles being run in pairs at different speeds, suitable for boring, tapping, and other operations. A machine of this kind, constructed by the same makers, is illustrated in fig. 239. |
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1911 Webster & Bennett, Four-Spindle Drilling Machine
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