GB Patent: GB-220,904
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| Improvements relating to boring, facing and like machines
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Patentee:
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| William Alfred Pearn (exact or similar names) - Rusholme, Manchester, England |
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Patent Dates:
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| Applied: |
Apr. 16, 1924 |
| Granted: |
Aug. 28, 1924 |
Espacenet patent
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Jeff Joslin
"Vintage Machinery" entry for Frank Pearn & Co., Ltd.
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Description: |
| "In a boring; facing, &c. machine of the type in which a mandrel carries a face-plate across which a tool-holder is adapted to be traversed and in which a boring &c. spindle having a combined rotary and sliding motion is disposed centrally within the mandrel, the spindle b carries a pinion f having clutch teeth for direct engagement with a clutch g on the mandrel a, the pinion being also adapted to be driven through a back gear comprising a pinion n and pinions o, p engaging alternatively with pinions i, j on the mandrel. A pulley e, rotated from a six or eight speed gear box (not shown) drives the mandrel through gearing as described in Specifications GB-191,219,159 and GB-213,952, and the mandrel is supported at each end in bearings c, d." |
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