US Patent: 42,776
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Improvement in Sliding Scales for Steam Engines
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Patentee:
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Arnold Jillson (exact or similar names) - Cumberland, RI |
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Patent Dates:
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Granted: |
May 17, 1864 |
USPTO (New site tip) Google Patents
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Russ Allen.
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Description: |
Invention to include the horsepower calculations for steam engines, replacing the table previously used for pumping engines.
Known example is only marked with the patent date on the brass endcap with no manufacturer. Stanley No 6 rules are reported to exist with patent mark and horse power tables.
Second earliest patent for this category. |
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