US Patent: 61,141
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| Improvement in valves of steam engines
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Patentee:
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| Louis D. Bartlett (exact or similar names) - Fitchburg, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jan. 15, 1867 |
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Joel Havens
"Vintage Machinery" entry for Putnam Machine Co.
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Description: |
| My invention consists in a simple and compact arrangement and construction of the valve-chests and steam passages of engines where poppet-valves are employed, whereby the dimensions of the chest can be reduced, and great facility afforded for removing the valves when cleaning or repairing is required.
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