Patent GB-1901-21099

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LTA aircraft design based on the premise that propulsion should be centered around the aircraft's central axis.

... "two propelling screws, one at the prow and the other at the stern of the balloon proper, so that in aërial navigation the tractive efforts are in the direction the direction of the axis of the balloon" ...

Inventor location: 2 Rue Léopold Robert, Paris, France


Year filed 1901
Year granted 1902
Office GB
Patent number 21099
Inventors Augusto Severo
Inventor country BR, FR
Applicant person
Applicant firm
Applicant type INDIV
Applicant is inventor? 1
Original title Improvements in Balloons, or Apparatus for Aërial Navigation
English title Improvements in Balloons, or Apparatus for Aërial Navigation
Tech fields LTA, balloon, navigation, frame, car, propulsion, landing, wheels, springs, aluminum, rigid, design
Filing date 1901-10-21
Full specification filed date
Application number
Grant date 1902-09-18
Granted? 1
Publication date
Supplementary to patent
Related to aircraft? 1
Serial number
Patent agent Johnsons & Willcox
Assigned to
National tech categories
Family year
First filing?
Cites these patents
Citations from after 1930
Application ID
Number of text pages 4
Number of diagram pages 1
Number of figures 4
Number of claims 6