GB139028A - Improvements in propellers - Google Patents
Improvements in propellersInfo
- Publication number
- GB139028A GB139028A GB675019A GB675019A GB139028A GB 139028 A GB139028 A GB 139028A GB 675019 A GB675019 A GB 675019A GB 675019 A GB675019 A GB 675019A GB 139028 A GB139028 A GB 139028A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blades
- boss
- rim
- parts
- propellers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
- B64C11/006—Paddle wheels
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
139,028. Prendergast, R. S., and Prendergast, G. M. March 18, 1919. Screw propellers. - In propellers with thin narrow blades attached to an outer rim, the blades have a forward bend and are of aerofoil section, and the rim is preferably of streamline section, and formed in parts clipped together. The rocts of the blades are not in one plane in the boss. The boss may be replaced by a second inner rim supported from the shaft by spokes. The boss a is formed in two parts supported by arms and has slots at b<1> into which the inner ends of the blades b enter, these slots being staggered and partly on one half and partly on the other half of the boss. The blades are held in position by the means holding the halves of the boss, or each blade may have a screwed end and nut attachment. The angle of incidence of the blades decreases from root to tip, and the steel blades are bent forwardly and attached at b<2> to an outer rim c which may be of duralumin. Various forms of attachment are described, according as the rim is made in two parts or hollow. An extension casing g may be provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB675019A GB139028A (en) | 1919-03-18 | 1919-03-18 | Improvements in propellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB675019A GB139028A (en) | 1919-03-18 | 1919-03-18 | Improvements in propellers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB139028A true GB139028A (en) | 1920-02-26 |
Family
ID=9820090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB675019A Expired GB139028A (en) | 1919-03-18 | 1919-03-18 | Improvements in propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB139028A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4419052A (en) * | 1980-02-07 | 1983-12-06 | Rockwell International Corporation | Turbine meter rotor |
| US5730583A (en) * | 1994-09-29 | 1998-03-24 | Valeo Thermique Moteur | Axial flow fan blade structure |
-
1919
- 1919-03-18 GB GB675019A patent/GB139028A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4419052A (en) * | 1980-02-07 | 1983-12-06 | Rockwell International Corporation | Turbine meter rotor |
| US5730583A (en) * | 1994-09-29 | 1998-03-24 | Valeo Thermique Moteur | Axial flow fan blade structure |
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