US Patent: 409,457
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| Steam-engine
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Patentees:
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| Joseph W. Dennis (exact or similar names) - Buffalo, NY |
| Frank A. Shoemaker (exact or similar names) - Buffalo, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 13, 1889 |
| Granted: |
Aug. 20, 1889 |
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Joel Havens
"Vintage Machinery" entry for J. W. Dennis
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Description: |
| "This invention relates to that class of steam-engines which contain two or more cylinders and connected pistons moving therein, and in which the steam is admitted to a chamber formed at the junction of the cylinders and admitted from said intermediate chamber to the outer ends of the cylinders and exhausted therefrom by a rotary valve. The object of our invention is to produce a simple engine of this kind which is composed of comparatively few parts, which can be constructed at small expense, and which is easily kept in order." |
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