GB Patent: GB-259,064
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| Improvements relating to boring and facing machines
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Patentee:
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| Harry Alfred Pearn (exact or similar names) - West Gorton, Manchester, England |
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Patent Dates:
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| Applied: |
Nov. 30, 1925 |
| Granted: |
Oct. 07, 1926 |
Espacenet patent
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Jeff Joslin
"Vintage Machinery" entry for Frank Pearn & Co., Ltd.
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Description: |
| "In a boring and facing machine of the kind comprising a rotary head carrying a traversed facing tool and a central boring bar coaxial with the facing head, and having a facing tool box which is provided with an adjustable tool-holder so that the tool may be reset to take a fresh cut without moving the work, the toolbox a carries two tool holders c, d, which are secured by a single wedge g operated by a screw g1 and engaging the inclined sides e, # of the holders. On releasing the wedge, the tools may be adjusted by means of screws y which engage segmental nut portions of the tool-holders and are provided with indicating means m. The tools are clamped in position by screws p." |
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