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GB Patent: GB-191,212,122
Improvements in milling, facing, drilling and boring machines
Thomas Bowman Burton - Broadheath, Manchester, England
Joseph Richard Carden Kearns - Broadheath, Manchester, England

USPTO Classifications:

Tool Categories:
metalworking machines : metal lathes
metalworking machines : drilling and boring : horizontal boring mills

H. W. Kearns & Co., Ltd. - Broadheath, Manchester, England

H. W. Kearns & Co., Ltd. - Broadheath, Manchester, England


Patent Dates:
Applied: May 22, 1912
Granted: Feb. 13, 1913

Patent Pictures:
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"Vintage Machinery" entry for H. W. Kearns & Co., Ltd.
"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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