GB Patent: 191,219,159 - Improvements in boring, facing, and like machines


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GB Patent: GB-191,219,159

Improvements in boring, facing, and like machines

Patentees:

Frank Pearn (exact or similar names) - West Gorton, Manchester, England

William Alfred Pearn (exact or similar names) - 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:

Espacenet patent
Report data errors or omissions to steward Jeff Joslin
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 GB-191,019,367 are referred to."