Category:Porter-Allen steam engines
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Media in category "Porter-Allen steam engines"
The following 5 files are in this category, out of 5 total.
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Porter-Allen cylinder and valves 2.png 536 × 312; 17 KB
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Porter-Allen high-speed engine (New Catechism of the Steam Engine, 1904).jpg 1,242 × 729; 173 KB
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The Street railway journal (1894) (14572976837).jpg 2,614 × 790; 496 KB