Patent US-1842-ph
Intended to carry 450 lbs of fuel and 500 lbs of dilating fluid; paddle-wheel on each side powered by engine; steam engine using alcohol:
It is proposed to have he engine made of steel, so as to secure the greatest possible strength in the smallest possible compass—and to use spirits of turpentine or alcohol, which boil at about thirty-three and a half per cent. less heat than water; when 300 per cent. of strength may be obtained by using these materials, and the same proportionate weight of metal being dispensed with, which being calculated to work two and a half or three horse-power—and to carry 450 lbs. more. This would make a total of 950 lbs., which would require an extent in width of about 125 fee by 375. This, multiplied by itself, and one-third of the quotient deducted, would leave the number of square feet contained in the area of the disc of the inclined plane of the machine. (Quoted in Wise, 1850, A System of Aeronautics, pp. 84–85.)
Kite replaced at some point by balloon perhaps based on suggestion of John Wise, who wrote in 1850:
Having met with Mr. Pennington at Winchester, Va., while making arrangements for a balloon ascension from that place, I advised him to place a balloon, instead of a kite, as a buoyant power to his flying machine, which he at once adopted. He has deposited a model in the patent office a Washington; and in his pamphlet, purports to have entered it for letters patent, which, if so, is more likely to be improved than infringed; for, thus far, nothing has been realized by it. The application of beveled wheels to the propulsion of aerial machinery did not originate with Mr. Pennington, nor can it be ascribed to any one in particular, as he use of them would naturally suggest itself to any one who was engaged in the investigation of aerial navigation. Mr. C. Green, of London, the veteran aeronaut, used hem in an experimental model of a flying machine, a balloon, at an exhibition of his air navigating machine before the Polytechnic School of London, before Mr. Pennington presented his claim to their application for such purpose. (Wise, 1850, A System of Aeronautics, p. 85.)
Sources
- Short's DB espacenet inclined plane, propelled by alcohol steam; image: http://www.loc.gov/pictures/resource/cph.3a06649/; description (1850): http://books.google.com/books?id=sfYOAAAAYAAJ&vq=pennington&pg=PA90#v=snippet&q=pennington&f=false; nb Pennington may have also filed in London
Inventor location (imputed by HistPat): Baltimore, MD
| Year filed | |
|---|---|
| Year granted | 1842 |
| Office | US |
| Patent number | ph |
| Inventors | John H. Pennington |
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| Applicant is inventor? | 1 |
| Original title | Steam-kite, or inclined plane, for navigating the air |
| English title | Steam kite |
| Tech fields | airplane, LTA, kite, propulsion, propeller, navigation |
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| Grant date | 1842-04-28 |
| Granted? | 1 |
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| Related to aircraft? | 1 |
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| Citations from after 1930 | |
| Application ID | 1842 |
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