Patent US-1916-1202449

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The invention is to provide a machine for safely and rapidly navigating the air.

The text first discusses approaches to aerial navigation. Compressing from the text:

  • There are several methods of aerial navigation. The first is by apparatus which is lighter than air, or buoyant.
  • A second method consists in providing a flat surface, by the reaction of the air upon which the entire apparatus is to be supported. This flat surface or aeroplane [is] driven forward by propellers or fans. its front end will be slightly elevated. The entire apparatus is usually heavier than air. The aeroplane may have buoyant floats which will more or less support the weight of the apparatus; and this buoyancy may be increased until the first form of aerial navigation has been reached. The second form of aerial navigation is represented in most insects, whose bodies are light and whose wings impinge upon the air on both their upper and lower surfaces. These wings are therefore reciprocating propellers, or fans, and verge.
  • The third method of aerial navigation uses a rapidly moving propeller to pushes air downward, causing the apparatus to move vertically upward. This is seen in nature in the hovering of insects and smaller birds, and is the most expensive form of aerial navigation which is known. (wait, aren't those creatures ornithopters, not helicopters?)
  • A fourth method of aerial navigation consists in providing supporting planes which reciprocate more or less vertically, but at all that of the air, or there can be no forward motion In this method of flight, the wings must move somewhat slowly, because, if they move rapidly, there will be an air pressure upon the upper surface. The inventor thinks birds fly this way.

Q: which kind is the inventor classifying this invention into? Maybe the fourth. Possibly an ornithopter. Refers to vertical movements of the tail, and oscillations of the wings. But when he says slow-moving . . . that wouldn't generate lift. Did this device work?

  • example: very complicated diagrams
  • Tech classifications: CPC B64C33/02 Actuating mechanisms for wings
  • Inventor location: Springfield, Sangamon county, IL (FIPSloc=17167 imputed by HistPat)
  • Patent agent: unclear, but something like Hran Olderneal.


Year filed 1906
Year granted 1916
Office US
Patent number 1202449
Inventors Ruter William Springer
Inventor country US
Applicant person Ruter William Springer
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Flying-machine
English title Flying machine
Tech fields
Filing date April 4, 1906
Full specification filed date
Application number 1906309911
Grant date October 24, 1916
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 309911
Patent agent
Assigned to
National tech categories USPC 244/22
IPCs IPC B64C33/00
CPCs CPC B64C33/02
Family year 1906
First filing? Yes
Cites these patents
Citations from after 1930
Application ID 47820428
INPADOC family ID 43782664
Number of text pages 6
Number of diagram pages 2
Number of figures 7
Number of claims 17