Patent US-1903-732568
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Clear things away from the propeller before propeller collides with them, I believe.
From the patent: "In a prior application filed by me on September 10, 1902, Serial No. 122,750, I have disclosed a self-clearing propeller wherein a single rib or a group of ribs extend from the sternpost toward the propeller to prevent the accumulation of seaweed around the revoluble parts, said rib or ribs and the propeller-blades or either of said parts being provided with crushing or .tearing faces adapted to sever any seaweed which may pass between the cooperating edges of the rib or ribs and the propeller-blades."
Focus on seaweed ==> marine not aerial although the same techniques may apply there
- Tech classification: CPC B63H5/165 Propeller guards, line cutters or other means for protecting propellers or rudders
- Inventor location: Southampton, in the county of Suffolk and State of New York
Sources
- Patent 732568 document and bibliographic info on espacenet
- Patent 732568 at google patents
| Year filed | 1903 |
|---|---|
| Year granted | 1903 |
| Office | US |
| Patent number | 732568 |
| Inventors | Charles H. Lee |
| Inventor country | US |
| Applicant person | Charles H. Lee |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Self-clearing propeller |
| English title | |
| Tech fields | propeller, marine |
| Filing date | 1903-03-30 |
| Full specification filed date | |
| Application number | |
| Grant date | 1903-06-30 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | .5 |
| Serial number | |
| Patent agent | |
| Assigned to | |
| National tech categories | USPC 440/73, USPC 416/146R, USPC 416/247A |
| IPCs | IPC B63H5/16, IPC B63H5/00 |
| CPCs | CPC B63H5/165 |
| Family year | 1903 |
| First filing? | 1 |
| Cites these patents | |
| Citations from after 1930 | |
| Application ID | |
| INPADOC family ID | |
| Number of text pages | |
| Number of diagram pages | 2 |
| Number of figures | 4 |
| Number of claims | 14 |
