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GB Patent: GB-191,219,159
Improvements in boring, facing, and like machines
Patentees:
Frank Pearn - West Gorton, Manchester, England
William Alfred Pearn - West Gorton, Manchester, England

USPTO Classifications:

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

Assignees:
None

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

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 21, 1912
Granted: Apr. 17, 1913

Patent Pictures:
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"Vintage Machinery" entry for Frank Pearn & Co., Ltd.
Description:
"A boring and facing machine with a vertically adjustable head driven by belt or chain has an improved back-gear drive. The belt or chain wheel h is mounted on a sleeve g carrying pinions j, i which alternatively drive pinions r, s splined upon an axially movable back-shaft q. The axial movement allows the main-spindle e to be driven through pinions u, p at the front or through pinions t, o. The pinions r, s are moved relatively to the shaft q by a handle-operated rack bar w. The gear shown allows of four speeds, but this number may be increased by increasing the number of pinions upon the sleeve g. Specifications GB-190,511,870 and {GB191,019,367} are referred to."

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