Patent DE-1894-85903

Translated from google patents: "climbing propellers to be set in motion by human power (body weight), using a kite-like upper sail. [To] move and steer this aircraft, curved frames or crossbeams made of thin-walled metal or other material are mounted in suitable places below the propellers, on the side of the propellers towards which the flight is to take place, the concave sides of which are covered with special sail surfaces."

• Tech class: CPC B64C27/82: Rotorcraft; Rotors with an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft ; CPC B64C2027/8245 Rotorcraft; Rotors with an auxiliary rotor or fluid-jet device for counter-balancing lifting rotor torque or changing direction of rotorcraft using air jets
• Inventor location: Breslau, DE

Sources

• Lilienthal museum patents
• Original patent document and Bibliographic info at DPMA
• Original patent document and bibliography entry at espacenet
• on google patents

Year filed	1894
Year granted	1896
Office	DE
Patent number	85903
Inventors	August Boehm
Inventor country	DE
Applicant person	August Boehm
Applicant firm
Applicant type	INDIV
Applicant is inventor?	1
Original title	Lenkbare Flugmaschine mit Steigschrauben
English title	Steerable flying machine with climbing propellers
Tech fields	steering, helicopter
Filing date	1894-02-27
Full specification filed date
Application number	85903D
Grant date	1896-03-10
Granted?	1
Publication date	1894/02/27
Supplementary to patent
Related to aircraft?	1
Serial number
Patent agent
Assigned to
National tech categories	DE 77
IPCs	IPC B64C27/04
CPCs	CPC B64C27/82, CPC B64C2027/8245
Family year	1894
First filing?	1
Cites these patents
Citations from after 1930	0
Application ID	9377435
INPADOC family ID	3763295
Number of text pages	1
Number of diagram pages	1
Number of figures	4
Number of claims	1