Patent GB-1910-12187
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Hollow blades for propellers, reinforced by internal ribs.
Google patents abstract: "12,187. Blackburn, H. May 18. Screw propellers. Comprises improvements in the type of screw propeller for aerial machines having the blades set at an angle to the shaft greater than a right-angle. The blades are made wider at the base D than at the tip E and are made hollow and reinforced by internal ribs F. Each blade is supported on an arm A which gradually flattens towards the tip and may be tied to the opposite blade by tension bars to increase rigidity. The efficiency of the blades is increased by slightly flanging the leading edges."
- Tech class CPC B64C11/16 (Impeller) Blades
- Inventor location: 40 Ewrdley Crescent, Earls Court, previously ("late") of 3 Elm Place, South Kensington, both in County of London ; Motor Engineer
- Refers to Patent GB-1909-15801, an aeroplane for which this propeller is intended.
Sources
- Original patent document and bibliography entry on espacenet
- on google patents
| Year filed | 1910 |
|---|---|
| Year granted | 1910 |
| Office | GB |
| Patent number | 12187 |
| Inventors | Harold Blackburn |
| Inventor country | GB |
| Applicant person | Harold Blackburn |
| Applicant firm | |
| Applicant type | INDIV |
| Applicant is inventor? | 1 |
| Original title | Improvements in Screw Propellers |
| English title | Improvements in Screw Propellers |
| Tech fields | propellers |
| Filing date | 1910-05-18 |
| Full specification filed date | |
| Application number | 191012187D |
| Grant date | 1910-10-20 |
| Granted? | 1 |
| Publication date | |
| Supplementary to patent | |
| Related to aircraft? | 1 |
| Serial number | |
| Patent agent | J. P. Bayly |
| Assigned to | |
| National tech categories | |
| IPCs | IPC B64C11/16 |
| CPCs | CPC B64C11/16 |
| Family year | 1910 |
| First filing? | 1 |
| Cites these patents | Patent GB-1909-15801 |
| Citations from after 1930 | 0 |
| Application ID | 23599815 |
| INPADOC family ID | 11092660 |
| Number of text pages | 2 |
| Number of diagram pages | 1 |
| Number of figures | 7 |
| Number of claims | 1 |
