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GB Patent: GB-191,413,815
Improvements relating to boring, facing and like machines
Patentee:
William Alfred Pearn (exact or similar names) - Manchester, England

USPTO Classifications:

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

Assignees:
None

Manufacturer:
Frank Pearn & Co., Ltd. - West Gorton, Manchester, England

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 08, 1914
Granted: Jan. 28, 1915

Patent Pictures:
Espacenet patent
Report data errors or omissions to steward Jeff Joslin
"Vintage Machinery" entry for Frank Pearn & Co., Ltd.
Description:
"The rotary tool-heads of boring and facing machines, such as are described in Specification GB-191,219,159, have a special feed-motion. A worm on the central feed-spindle drives a worm-wheel e and, through a clutch, a spur-wheel g meshing with a pair of pinions h engaging a rack on the tool slide. When turning maximum diameters, only the outer pinion is operative. Tools of ordinary length may be employed, the shank passing clear of the worm-wheel."

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