US Patent: 201,778
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| Emery Wheel
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Patentee:
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| Gilbert Hart (exact or similar names) - Detroit, MI |
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Patent Dates:
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| Applied: |
Mar. 05, 1878 |
| Granted: |
Mar. 26, 1878 |
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Joel Havens
"Vintage Machinery" entry for Hart Emery Wheel Co., Ltd.
"Vintage Machinery" entry for Detroit Emery Wheel Co.
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Description: |
| James L. Norris - patent attorney
This grinding wheel was advertised in the 1895 catalog from Charles A. Strelinger of Detroit, MI.
Hart Emery Wheel Co. changed its name to Detroit Emery Wheel Co. about 1878.
Claim:
"It is well known to all users of this class of grinding and polishing wheels that, in order to work them with the best effect and greatest economy, they must be run at high speed; and, when thus used, they are, even when great care and skill are exercised, more or less liable to break and fly off from their exes, as when a breakage occurs the fragments of the wheel are scattered with great violence, frequently fatally wounding the operator and others in the vicinity, and destroying property..."
The invention consisted of a grinding wheel with a web of metal metal wire embedded within it. |
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