US Patent: 110,102
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| Improvement in the manufacture of emery-wheels
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Patentee:
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| John F. Wood (exact or similar names) - Boston, MA |
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Patent Dates:
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| Granted: |
Dec. 13, 1870 |
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Jeff Joslin
Vintage Machinery entry for Union Stone Co.
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Description: |
| "The process of manufacturing emery-wheels under this invention is as follows: I take the ordinary composition for emery-wheels as prepared and mixed ready for the mold. I place in the center of the mold a wooden disk, filling all the mold, except so much of the circumference as is designed to be of emery-stone. Into the space thus left the emery composition is pressed, rammed, or tamped in the ordinary way. The wooden disk is then removed, and, before the composition sets, the center space is filled with composition for artificial stone, prepared in the ordinary way, and this is pressed, rammed, or tamped, and the whole is allowed to set and harden, and thus a solid wheel is formed."I am aware the centers of iron have been used in emery-wheels; but they are more expensive than those of artificial stone, and cannot be made to unite so perfectly as the artificial stone and emery in my process."The danger of throwing off the circumference of large wheels at great velocity requires that the whole be firmly cemented in one mass, which is hardly practicable with an iron center, but is easy by my process; and, again, the danger of fracture of the wheels by the unequal expansion of iron and emery-stone by heat is avoided by this invention." |
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