GB Patent: GB-213,952
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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: |
Dec. 15, 1922 |
| Granted: |
Apr. 15, 1924 |
Espacenet patent
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Jeff Joslin
Vintage Machinery entry for Frank Pearn & Co., Ltd.
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Description: |
| "In gearing as described in Specification GB-191,219,159 for rotating the mandrel of a boring and facing machine, a four speed arrangement is converted into a five speed arrangement. A pulley a, driven by a belt from a gear box in the base of the machine, is secured to a sleeve b which drives a gear wheel o on the face-plate through a counter-shaft from which four speeds are obtainable, the fifth speed being derived by locking the pulley to the mandrel c carrying the face-plate by means of a plunger e. Specification GB-189,925,589 also is referred to." |
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