GB Patent: GB-191,212,122
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| Improvements in milling, facing, drilling and boring machines
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Patentees:
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| Thomas Bowman Burton (exact or similar names) - Broadheath, Manchester, England |
| Joseph Richard Carden Kearns (exact or similar names) - Broadheath, Manchester, England |
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Patent Dates:
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| Applied: |
May 22, 1912 |
| Granted: |
Feb. 13, 1913 |
Espacenet patent
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Jeff Joslin
Vintage Machinery entry for H. W. Kearns & Co., Ltd.
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Description: |
| "The slide of a rotary tool-head is forked, as shown in Fig. 3, to pass a boring-bar E or other tool working through the hollow spindle. The slide is traversed bv projections d1 which engage a scroll F, Fig. 1, rotated through differential gearing k from a pinion h on the spindle of the tool-head and from a worm-wheel Q driven from the change-speed box of the machine. The gearing is so proportioned that, when the wheel Q is stationary, the scroll rotates at the same speed as the tool-head. The toolbox may be adjustably mounted on the slide." |
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