Patent GB-1913-23949

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(This seems to be essentially the same as Patent FR-1913-461273, filed 24 July 1913. Reference is made therein to an earlier Belgian patent designated Patent BE-1912-250417, filed 28 October 1912.)

(This original is marked "VOID: SEALING FEE NOT PAID", though it was granted 17 June 1915.)

(This airplane is inspired by reflection upon bird flight, and weight distribution. It is alleged that a bird's center of gravity being situated forward of its wings allows the bird's own weight to facilitate its horizontal movement. Great speed is thereby achieved. This aircraft's mechanical particulars are arranged so as to situate its center of gravity likewise slightly in front of its wings, with the same result. A key here is that gravity per se aids in speed and propulsion. Being as a bird's gravity-based forward thrust is thusly downward, the fluttering of its wings achieve and maintain its elevation. This aircraft features an exclusively lift-oriented propeller or screw being located near the center of pressure of the plane or wings, the propeller shaft thusly situated slightly behind the center of gravity. The inventor notes that while it had been proposed that lift that lifting propellers could be used for an aircraft's stationary maintenance in midair, to the best of his knowledge it had never been proposed to use a lifting propeller specifically in counteraction to the forward thrust of an aircraft which proceeds as a glider with no other means of propulsion. (It can behave as a helicopter or even exclusively as a glider.) (It is stated in lines 26-30 of the original that "The invention has for its object a very simple application of these principles to a monoplane of any known model of modern construction, Blériot, Deperdussin, Morane, Taube and others, which is a good glider, in combination with the ordinary driving and controlling mechanism and even without excluding automatic controlling or stabilizing devices.".)

(See Louis Blériot, Armand-Jean-Auguste Deperdussin, and Aéroplanes Morane-Saulnier, for information on some of these persons mentioned. Taube, searched within our data, factors in primarily as a key monoplane whose "types" were manufactured by many firms. Taube is German for "dove". For more on this, see Ignaz Etrich.

  • Henry Félix Villard location: 71 rue de l'Orme, Brussels, Belgium
  • Inventor occupation: Engineer


Year filed 1913
Year granted 1915
Office GB
Patent number 23949
Inventors Henry Félix Villard
Inventor country BE
Applicant person Henry Félix Villard
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Aeroplane
English title Airplane
Tech fields airplane, construction, frame, propeller, wings, propulsion, hybrid, monoplane, lift
Filing date October 22, 1913
Full specification filed date
Application number 191323949D
Grant date June 17, 1915
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent Edward Evans & Co.
Assigned to
National tech categories
IPCs IPC B64C23/00
CPCs CPC B64C23/005
Family year 1913
First filing? Yes
Cites these patents
Citations from after 1930
Application ID 23658541
INPADOC family ID 11143280
Number of text pages 3
Number of diagram pages 1
Number of figures
Number of claims 6