US Patent: 612,239
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| Machine for dressing metals or other materials
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Patentees:
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| Carl L. Grohmann (exact or similar names) - Hartford, CT |
| Lewis E. Harper (exact or similar names) - Hartford, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 04, 1897 |
| Granted: |
Oct. 11, 1898 |
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Jeff Joslin
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Description: |
| This is "an improved and efficient machine...for dressing or grinding articles of various shapes...being particularly adapted for finishing work of irregular form. Our improved machine includes as one of its features a plurality of superposed slides supported for movement in different directions and independent patterns coöperative with and acting against the respective slides, the patterns being constructed to cause the tool, preferably mounted on the upper slide, to travel through a path conforming to the outline of the work to be dressed, and this path may follow straight, curvilinear, or other lines, in accordance with the patterns employed...The tool-carriage comprehends a plurality of superposed, slides, which may be five in number...the tool...in the present case is a grinding device for dressing off the interiors of cups or boxes for containing the bearing-balls of bicycles..."See patent 612,412 for more on co-inventor Carl L. Grohmann. |
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