GB228177A - Improvements in partially immersed ships' propellers - Google Patents

Improvements in partially immersed ships' propellers

Info

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
Application number
GB2005/25A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB228177A publication Critical patent/GB228177A/en
Expired legal-status Critical Current

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

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.
GB2005/25A 1924-01-22 1925-01-22 Improvements in partially immersed ships' propellers Expired GB228177A (en)

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)

* Cited by examiner, † Cited by third party
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.

Cited By (11)

* Cited by examiner, † Cited by third party
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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