Patent GB-1866-1571
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Description in Aëronautics: An Abridgment of Aëronautical Specifications Filed at the Patent Office from A.D. 1815 to A.D. 1891, Part 1891 (Griffith Brewer and Patrick Y. Alexander, 1893), p. 36:
- Two or more aëroplanes are arranged one above the other, and support a framework or car containing the motive power. The aëroplanes are made of silk or canvas stretched in a frame by wooden rods or steel ribs. When manual power is employed the body is placed horizontally, and oars or propellers are actuated by the arms or legs.
- A start may be actuated by lowering the legs and running down hill, or the machine may be started from a moving carriage. One or more screw-propellers may be applied for propelling when steam-power is employed.
Octave Chanute ("Aeroplanes: Part IV", September 1892:
- In 1866 Mr. F. H. Wenham patented the meritorious proposal of superposing planes or surfaces above each other, so as to increase the supporting area without increasing the leverage. These were to be "kept in parallel planes by means of cords, or rods, or webs of woven fabric.... The long edges of the surface," made of silk or other light material, to be placed "foremost in the direction of motion." This system of surfaces being arranged above a "suitable structure for containing the motive power." If manual power was employed, the body of the operator was to be placed in a horizontal direction, and "the arms or legs to work a slide or treadle from which the connecting cords convey a reciprocating motion to oars or propellers, which are hinged above the back of the person working them."
(Chanute goes on to describe a presentation given by Wenham in 1866 to the Aeronautical Society of Great Britain, in which he discusses the theoretical advantages and the practical difficulties of using multiple parallel aeroplanes.)
Sources
- Brewer and Alexander, 1893, Aeronautics
- Neilson, 1910, Aeroplane Patents, p71
| Year filed | |
|---|---|
| Year granted | 1866 |
| Office | GB |
| Patent number | 1571 |
| Inventors | Francis Herbert Wenham |
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| Applicant is inventor? | 1 |
| Original title | Flying machine |
| English title | Flying machine |
| Tech fields | airplane, frame, propulsion |
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| Granted? | 1 |
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| Related to aircraft? | Yes |
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| Family year | 1866 |
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