Jacob Ellehammer

Jacob Christian Hansen Ellehammer (1871–1946) was a Danish watchmaker and inventor who made significant aero inventions.

Built a flying machine in 1904 and ran tests tethered to a mast. Claimed flight of 42 meters, 1.5 meters above the ground, on 12 September 1906. Later developed a helicopter airplane attachment.

Ellehammer described his occupation in 1912 as Manufacturer and his address as Istedgade 119, Copenhagen.

References

Patents whose inventor or applicant is Jacob H. Ellehammer or Jacob Ellehammer or Jacob Christian Hansen Ellehammer or Jacob Christian Hansen-Ellehammer

• Patent DK-1905-8795 (English title: Device for automatically maintaining the position of the aeroplanes by airships, Filing date: 1905-08-12)
• Patent FR-1906-364747 (English title: Device for automatically maintaining the position of the airfoil of airplanes, Filing date: 1906-03-30)
• Patent GB-1906-7377 (English title: Device for Automatically Maintaining the Position of the Aeroplane in Aerial Vessels, Filing date: 1906-03-27)
• Patent FR-1909-410209 (English title: Improvements in aeroplanes, Filing date: 1909-12-10)
• Patent GB-1910-1887 (English title: A Device for Folding the Wings of Flying Machines, Filing date: 1910-01-25)
• Patent FR-1911-437780 (English title: Rotating sustentation surface with aeroplane wings, Filing date: 1911-12-18)
• Patent US-1912-1155485 (English title: Aerial machine, Filing date: 1912-09-28)
• Patent FR-1912-441057 (English title: Flying machine, Filing date: 1912-03-07)
• Patent GB-1912-5459 (English title: Improvements in or relating to Aerial Machines, Filing date: 1912-03-04)