Early Aviation Engineering Camille Bollée Stabilization Patent for Airplanes in the First Decade of Powered Flight 1909

Early Aviation Patent

Ephemera and pamphlets

Bollée, Camille. Dispositif équilibreur pour aéroplanes (1909) documents early efforts to solve the problem of aircraft stability in the immediate years following the Wright brothers first powered flight, when engineers in Europe and the United States sought mechanical solutions to controlled flight. Issued by the French government, this patent establishes a technical approach to maintaining equilibrium through adjustable aerodynamic surfaces mounted on a rotating vertical shaft, shifting emphasis from pilot skill to engineered stabilization. The document supports research into early aviation engineering, international patent exchange, and the rapid development of aeronautical control systems in the pre–World War I period.

Bollée, Camille. Dispositif équilibreur pour aéroplanes. Paris: Office National de la Propriété Industrielle, 1909. Three pages with one illustrated plate containing six technical diagrams; original printed paper wrapper measuring approximately 11 x 7.5 inches. Patent submitted March 26, 1909, granted July 12, and published August 21. The text describes a stabilization system “composed of a generally vertical shaft… capable of a rotating motion around its axis, upon which one or several surfaces are mounted,” designed to counterbalance lateral instability through adjustable aerodynamic elements. Diagrams illustrate variable positioning of these surfaces to alter lift and drag, with the stated objective “to maintain the balance of airplanes… for example during lateral gusts or slips.” Front page bears a Chicago patent office stamp dated July 27, 1910, indicating circulation and review within American patent or engineering contexts.

This patent was produced during a period of intense international experimentation in powered flight, when inventors across France, Germany, and the United States pursued competing methods to improve control, safety, and maneuverability. Bollée’s design reflects early recognition of the need for mechanical stabilization systems that could respond dynamically to environmental forces, anticipating later developments in controlled flight technologies. The presence of an American stamp demonstrates transatlantic interest in aeronautical innovation at a moment when aviation knowledge circulated rapidly through patent systems and technical publications. Light age toning with faint crease to upper corner; document remains clean and legible; overall near fine condition. This item provides direct evidence of early twentieth century engineering approaches to flight stability and the global exchange of aviation technology.

Item #22161

Price: $885.00