GB Patent: 191,413,816 - Improvements in boring, facing and like machines


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GB Patent: GB-191,413,816

Improvements in 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:	Mar. 25, 1915

Patent Pictures:

Espacenet patent
Report data errors or omissions to steward Jeff Joslin
"Vintage Machinery" entry for Frank Pearn & Co., Ltd.

Description:

"Boring and facing machines of the kind described in Specification GB-191,219,159 have the rotary toolhead provided with a tapping-attachment. The tool slide is fed by a rack engaging pinions driven by a spur-wheel on a spindle movable axially to clutch the wheel to a worm-wheel driven by a worm on the central spindle b. When tapping, the clutch is thrown out and the slide is located in the correct position by a conical stop r. The end of the spindle b drives a screw m giving a hand feed, for starting, to the holder n, splined within the fixture p on the slide."