GB228177A - Improvements in partially immersed ships' propellers - Google Patents
Improvements in partially immersed ships' propellersInfo
- Publication number
- GB228177A GB228177A GB2005/25A GB200525A GB228177A GB 228177 A GB228177 A GB 228177A GB 2005/25 A GB2005/25 A GB 2005/25A GB 200525 A GB200525 A GB 200525A GB 228177 A GB228177 A GB 228177A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boss
- blade
- blades
- propellers
- leading
- 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
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/26—Blades
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
228,177. Gebers, F. Jan. 22, 1924, [Convention date]. Screw propellers. - Partially immersed screw propellers have blades the leading edges of which project forwatdly in the plane of rotation, and the roots of which are supported at two places in the boss. The blades may be fitted with external pitch altering gear which is handcontrolled or automatically as by the engine governor. The pitch may increase from root to tip and from leading to following edge. The leading edge of the blade is inclined forwardly to make an' acute angle with the tangent to the outer blade circle., Fig. 1, and the tip of the leading edge may be formed with a scallop. Instead of the blade being attached directly to the boss, an intermediate arm may be employed. When the blades are rotatable on their axes, the root a is supported in the boss in two bearings, Fig. 8, and' may be radially or offset to the shaft axis. Each blade has an external arm b, Fig. 9, which is connected to a rod c on a sliding ring d, the latter being constrained to rotate with the boss by guide bolts e. The ring d is slidden by a non-rotating disc g which is moved axially by worm and worm gear i acting on two lower screws h. The control gear for a number of propellers may be jointly actuated.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE228177X | 1924-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB228177A true GB228177A (en) | 1925-07-23 |
Family
ID=5867059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2005/25A Expired GB228177A (en) | 1924-01-22 | 1925-01-22 | Improvements in partially immersed ships' propellers |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB228177A (en) |
NL (1) | NL20110C (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3972646A (en) * | 1974-04-12 | 1976-08-03 | Bolt Beranek And Newman, Inc. | Propeller blade structures and methods particularly adapted for marine ducted reversible thrusters and the like for minimizing cavitation and related noise |
US4063852A (en) * | 1976-01-28 | 1977-12-20 | Torin Corporation | Axial flow impeller with improved blade shape |
US5174721A (en) * | 1990-10-13 | 1992-12-29 | Westland Helicopters Limited | Helicopter rotor blades |
EP1534589A1 (en) * | 2002-07-30 | 2005-06-01 | Arthur Vanmoor | Hydrodynamically and aerodynamically optimized leading edge structure for propellers, wings, and airfoils |
JP2012066699A (en) * | 2010-09-24 | 2012-04-05 | Nakashima Propeller Co Ltd | Marine propeller |
NL2008948C2 (en) * | 2012-06-06 | 2013-12-09 | G A M Manshanden Man B V | SHIP SCREW. |
-
0
- NL NL20110D patent/NL20110C/xx active
-
1925
- 1925-01-22 GB GB2005/25A patent/GB228177A/en not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3972646A (en) * | 1974-04-12 | 1976-08-03 | Bolt Beranek And Newman, Inc. | Propeller blade structures and methods particularly adapted for marine ducted reversible thrusters and the like for minimizing cavitation and related noise |
US4063852A (en) * | 1976-01-28 | 1977-12-20 | Torin Corporation | Axial flow impeller with improved blade shape |
US5174721A (en) * | 1990-10-13 | 1992-12-29 | Westland Helicopters Limited | Helicopter rotor blades |
EP1534589A1 (en) * | 2002-07-30 | 2005-06-01 | Arthur Vanmoor | Hydrodynamically and aerodynamically optimized leading edge structure for propellers, wings, and airfoils |
EP1534589A4 (en) * | 2002-07-30 | 2006-07-05 | Arthur Vanmoor | Hydrodynamically and aerodynamically optimized leading edge structure for propellers, wings, and airfoils |
JP2012066699A (en) * | 2010-09-24 | 2012-04-05 | Nakashima Propeller Co Ltd | Marine propeller |
NL2008948C2 (en) * | 2012-06-06 | 2013-12-09 | G A M Manshanden Man B V | SHIP SCREW. |
WO2013183994A1 (en) * | 2012-06-06 | 2013-12-12 | G.A.M. Manshanden Management B.V. | Ship screw, pump screw or turbine screw |
US9850876B2 (en) | 2012-06-06 | 2017-12-26 | G.A.M. Manshanden Management B.V. | Ship screw, pump screw or turbine screw |
US10415535B2 (en) | 2012-06-06 | 2019-09-17 | G.A.M. Manshanden Management B.V. | Ship screw, pump screw or turbine screw |
EP2858893B1 (en) | 2012-06-06 | 2019-10-09 | G.A.M. Manshanden Management B.V. | Ship screw, pump screw or turbine screw |
Also Published As
Publication number | Publication date |
---|---|
NL20110C (en) |
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