Patent US-1897-582718

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Fig. 1 shows a top view of the glider
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Full diagram

Substance: developments in glider frame, including springs which allow for changes in the wing to compensate for air pressure.

Chanute credits Louis-Pierre Mouillard with recognizing the need for "fore-and-aft movement of the wings in order to preserve the equilibrium."

The patent cites an earlier patent of Otto Lilienthal (not by number but Patent US-1895-544816 is a good candidate); Lilienthal Museum says: “"The present invention is an improvement upon the flying-machine recently patented to Otto Lilienthal ...";

Chanute adds seat for operator and spring mechanism, which shifts the wings forward or backward depending on wind-pressure (air resistance); the higher the wind, the further back it will push the wings on springs; "In each case the shifting of the wings compensates for the change in the center of the wind-pressure due to the change in the velocity and operates to keep said center of pressure coincident with the center of gravity, thereby automatically preserving the equilibrium."

Patent documents are at and Google patents

Ausgegeben: 1897/05/18” (source:;

Inventor location (imputed by HistPat): Chicago, IL, Cook county, IL (FIPSloc=17031)

Other sources marking this patent as relevant: Short's DB

  • PTO 244
Year filed 1895
Year granted 1897
Office US
Patent number 582718
Inventors Octave Chanute
Inventor country US
Applicant person
Applicant firm
Applicant type
Applicant is inventor? Yes
Original title Soaring-machine
English title Soaring-machine
Tech fields glider, frame, navigation, stability, piloting
Filing date December 7, 1895
Full specification filed date
Application number
Grant date May 18, 1897
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 571366
Patent agent
Assigned to
National tech categories USPC 244/16
IPCs IPC B64C31/02
CPCs CPC B64C31/02
Family year 1897
First filing? Yes
Number of citations
Cited by
Application ID 46557395
Number of text pages 2
Number of diagram pages 1
Number of figures 4
Number of claims 2