GB487937A - Improvements in or relating to screw propellers - Google Patents
Improvements in or relating to screw propellersInfo
- Publication number
- GB487937A GB487937A GB2896736A GB2896736A GB487937A GB 487937 A GB487937 A GB 487937A GB 2896736 A GB2896736 A GB 2896736A GB 2896736 A GB2896736 A GB 2896736A GB 487937 A GB487937 A GB 487937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- blades
- shaft
- chain
- link
- 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
- B64C11/02—Hub construction
- B64C11/04—Blade mountings
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
487,937. Screw propellers. COATS, J. S., and TROTMAN, E. W. Oct. 24, 1936, Nos. 28967 and 30073. [Class 114] A variable-pitch propeller has hollow blades each connected with the boss by a link which at its ends has pivoting axes oblique to the propeller axis, and each blade is extended beyond the axis into the opposite blade to provide a balance. A pivot 12 at the root of the hollow blade 11 is set obliquely and a link 13 connects it with an oblique pin 14 on the shaft 15, whilst another link 18 with a universal joint 20 connects the pivot 12 with a slide block 16 on an extension 17 of the shaft. As rotational speeds increase the blades tend to move out and at the same time alter in pitch due to the oblique setting of the pivots. The blades may be positively set by controlling the slider 16. Each blade is provided with an extension 21 which straddles the shaft and within the opposite blade has a fitting 24 connected by a chain 22 with a point 23 on that blade. The chain is fully extended when the blades are in their innermost position and the centrifugal force thereon is taken by the blade to which it is attached directly. As speed increases the blades move out and links of the chain pile up step-by-step in the part 24 adding their effect to the one blade and deducting from the other. Specification 469,124 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2896736A GB487937A (en) | 1936-10-24 | 1936-10-24 | Improvements in or relating to screw propellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2896736A GB487937A (en) | 1936-10-24 | 1936-10-24 | Improvements in or relating to screw propellers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB487937A true GB487937A (en) | 1938-06-24 |
Family
ID=10284096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2896736A Expired GB487937A (en) | 1936-10-24 | 1936-10-24 | Improvements in or relating to screw propellers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB487937A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029434A (en) * | 1975-05-22 | 1977-06-14 | Kenney Clarence E | Variable pitch mounting for airfoil blades of a windmill or propeller |
| CN118242446A (en) * | 2024-05-29 | 2024-06-25 | 东一阀门制造(南通)有限公司 | Oxygen tank valve with good sealing performance |
-
1936
- 1936-10-24 GB GB2896736A patent/GB487937A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029434A (en) * | 1975-05-22 | 1977-06-14 | Kenney Clarence E | Variable pitch mounting for airfoil blades of a windmill or propeller |
| CN118242446A (en) * | 2024-05-29 | 2024-06-25 | 东一阀门制造(南通)有限公司 | Oxygen tank valve with good sealing performance |
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