GB Patent: GB-191,517,938
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| Improvements in the Feed Mechanism of Boring and Turning Mills
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Patentees:
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| Webster & Bennett, Ltd. (exact or similar names) - Coventry, Warwick County, England |
| Harry Thompson (exact or similar names) - Coventry, Warwick County, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 23, 1915 |
| Granted: |
Aug. 31, 1916 |
Espacenet patent
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Joel Havens
"Vintage Machinery" entry for Webster & Bennett
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Description: |
| Abstract:
The vertical and horizontal feeds of a boring and turning mill are so driven from a common shaft that each feed has its own trip mechanism. A worm shaft B can be rocked about an axis A<2> to engage either the feed-wheel C<2> or the wheel D<2>, and is locked by arms E engaging under lugs A<3>. In this position, a spring M acting, through a lever pivoted at L<4>, on lugs K, K<2> tends to return the worm shaft to its central position, the action to raise the spindle being more powerful than that to lower it, thus balancing the weight of the spindle. The arms E are carried by rockshafts having arms E<3> tripped by dogs J driven through gearing from the feed-shafts C, D. Friction clutches G provide for setting the dogs to trip at the required points, adjustment being facilitated by graduations on the front of the clutches. |
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