Patent BE-1913-258868
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File:Patent BE-1913-258868.jpg Patent BE-1913-258868
“L’hélice a une forme creuse analogue à celle d’une gorge de menuisier ; le creux a une flèche minima de cinq pour cent par rapport à la largeur de la pale au point considéré.”
That is, “The blade has a narrowing form analogous to that of the gouge of a carpenter or furniture maker; the tapering has a narrowing down to five percent relative to the thickness of the blade at the point considered.”
(We are studying "pale", or "pale d'hélice", as tentatively the blunter or thicker edge of the propeller blade. See Pale on French wikipedia.)
Source
Inventor location: 71 rue de l'Orme, Brussels, Belgium
| Year filed | |
|---|---|
| Year granted | 1913 |
| Office | BE |
| Patent number | 258868 |
| Inventors | Henry Félix Villard |
| Inventor country | BE |
| Inventor location | |
| Applicant person | Henry Félix Villard |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | Yes |
| Original title | Perfectionnements aux hélices |
| English title | Improvements in propeller blades |
| Tech fields | propellers, aerodynamics, propulsion, design |
| Filing date | |
| Full specification filed date | |
| Application number | |
| Grant date | July 29, 1913 |
| Granted? | Yes |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | Yes |
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| National tech categories | BE K |
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| Family year | |
| First filing? | No |
| Cites these patents | |
| Citations from after 1930 | |
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