GB Patent: GB-456,128
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| Improvements relating to the hardening of metal surfaces
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Patentees:
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| Herbert Howarth Beeny (exact or similar names) - Coventry, England |
| Arthur Harold Lloyd (exact or similar names) - Coventry, England |
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Patent Dates:
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| Applied: |
Jun. 20, 1936 |
| Granted: |
Nov. 03, 1936 |
Espacenet patent
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Jeff Joslin
"Vintage Machinery" entry for Alfred Herbert Ltd.
"Vintage Machinery" entry for Monarch Machine Tool Co.
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Description: |
| "This invention relates to the production of cast-iron articles, such as rails, having a hardened surface, the hardening being effected by a local heating of the surface, by means of a burner, whereafter the heated part of the surface is immediately cooled." The assignee firm, Alfred Herbert, Ltd., made lathe rails using a centrifugal casting process, and they used this flame-hardening process to harden the rail surface. The patent also mentions hardening sand-cast lathe beds. A 1957 catalog from the American lathe maker Monarch Machine Tool Co. lists this British patent. |
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