The helicopter-type propellers change alignment and shape in order to become aeroplane-type sustaining surfaces for horizontal flight.
"The object of the present invention is to provide a screw propeller for raising and lowering airships in a vertical direction which can also be used as a sustaining surface or aeroplane when the airship is rapidly propelled in a horizontal direction."
Wing camber: "I prefer that the wings should be so constructed that the air pressure from beneath will cause them to assume the shape of segments of spheres, since these and similar arched surfaces, which greatly resemble the wings of birds, are the most effective aeroplanes known at the present time. A convenient construction consists in making the framework of the wings after the fashion of an ordinary cycle wheels..."
- Template:Fast approval -- for some reason, not obvious, the British patent office granted this patent just 30 days after it was submitted ("filed"). A natural reason would be that it was a foreign filing of a patent previously approved in the U.S. or Germany, but it is not clear on the patent document itself that it is a foreign filing.
- Inventor location: 50 Centre Street, Cleveland, Ohio
- Original patent document and bibliography entry on espacenet
- Aeronautical Journal, January 1898, p. 26.
|Applicant person||Rudolph Kosch|
|Applicant is inventor?||1|
|Original title||A combined Screw Propeller and Aeroplane, for raising, lowering, and sustaining Air Ships|
|English title||Combined screw propeller and aeroplane, for raising, lowering, and sustaining airships|
|Tech fields||helicopter, airplane, propeller, propulsion, navigation, airfoil, LTA|
|Full specification filed date||1896-04-30|
|Supplementary to patent|
|Related to aircraft?||1|
|Patent agent||E. P. Alexander & Son|
|National tech categories|
|Number of citations|
|INPADOC family ID|
|Number of text pages||3|
|Number of diagram pages||3|
|Number of figures||10|
|Number of claims||6|