US1549564A - Propeller mount - Google Patents
Propeller mount Download PDFInfo
- Publication number
- US1549564A US1549564A US644932A US64493223A US1549564A US 1549564 A US1549564 A US 1549564A US 644932 A US644932 A US 644932A US 64493223 A US64493223 A US 64493223A US 1549564 A US1549564 A US 1549564A
- Authority
- US
- United States
- Prior art keywords
- propeller
- flow
- strut
- water
- shaft
- 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 - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000010276 construction Methods 0.000 description 3
- 241000142353 Aulacomya atra Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/40—Stern posts; Stern frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/08—Arrangements on vessels of propulsion elements directly acting on water of propellers of more than one propeller
Definitions
- the present invention relates to a propelling means for water craft such as small pleasure boats and ocean vessels and has for its object to minimize the resistance of the flow to the propeller and direct the flow therefrom and prevent rotation of the wake.
- a further object of the invention is to locate the strut in the rear of the propeller and thereby prevent its obstructing the flow of the water thereto.
- the invention also has for its object to construct the strut with a hydrofoil sect-ion with the result of minimizing the resistance to flow as well as directing the flow from the propeller and preventing eddying formation and rotation of the wake.
- a further object of the invention is to compensate for the inclination of the propeller shaft by providing a guide plate whereby to direct the water and thereby materially assist the action of the propeller.
- FIG. 1 is a side view of the stern portion of a boat illustrative of the invention
- Figure 2 is a diagrammatic view showing the parts on a larger scale, the propeller being omitted and the propeller shaft being indicated by the dotted lines,
- Figure 3 is a front view, the circular dotted lines indicating the position of the propeller.
- Figure l is a sectional view of a strut.
- the numeral 1 designates the hull or body of a boat
- 2 is a propeller disposed aft beneath the stern or a wing screw in the case of a twin screw vessel
- 3 the propeller shaft which may, or may not, be inclined to the horizontal.
- the strut forming a mount for the rear end of the propeller shaft 3 comprises a hub 4 forming a bearing for the propeller shaft, and arms 5 and is located in the rear of the propeller 2 so as not to obstruct the flow thereto, and likewise to prevent rotation of the wake.
- the arms comprising the strut have a hydro-foil outline in cross section which results in reducing the resistance and in directing the flow from the propeller as well as obviating eddying and preventing rotation of the wake.
- a guide plate 6 is carried by the strut and is disposed below the propeller and curves longitudinally and laterally, whereby to direct the flow from the propeller. Specifically this guide plate diverts the flow of water from an inclined direction to a horizontal direction and thereby increases the etficiency of propulsion.
- the guide plate extends forwardly of the strut so as to underlap the propeller and inthe preferable construction, the guide plate is of hydrofoil outline in cross section.
- the invention is such as to be applied to craft of every nature impelled by means of a screw propeller, the purpose being to facilitate the flow to the propeller and direct the flow therefrom and to prevent eddying and rotation of the wake.
- said strut being arranged with but single arm below said bearing, the latter arm being vertical with its axis intersecting the bearing.
- Ater craft having a propeller disposed beneath the stern, and means beneath the stern substantially of hydrofoil outline to receive the water tangentially as it leaves the propeller and change the direction of flow to a direct-ion straight astern, said means being provided with a single arm below said bearing, the arm being vertical with its axis intersecting the bearing.
- Water craft having propeller, and a guide means associated therewith arranged to divert the flow of water therefrom from an inclined direction to horizontal direction to increase the efiiciency of propulsion, said guide means having an arm extending below and in vertical alinementwith the bearing, and said arm at its lower end having a guide plate.
- a. ater craft having a propeller disposed beneath the stern, a shaft for said propeller, a strut located in the rear of the propeller having a hub constituting a bearing for the shaft, arms radiating from the hub, said arms being substantially of hydrofoil outline whereby they will receive the water tangentially as it leaves the propeller and change the direction of flow to a direction straight astern, said arms and hub being integral, and a guide plate integral with one of said arms arranged to direct the flow of water from an inclined direction from the propeller to a horizontal direction to thereby increase the efiiciency of propulsion.
- Ater craft having a propellor disposed beneath the stern, a shaft for said propeller, a strut located in the rear of the propeller having a hub constituting a bearing for the shaft, arms radiating from the hub, said arms being substantially of hydrofoil outline whereby they will receive the water tangentially as it leaves the propeller and change the direction of flow to a direction straight astern, said arms and hub being integral, and a guide plate integral with one of said arms arranged to direct the flow of water from an inclined direction from the propeller to a horizontal direction to thereby increase the efiiciency of propulsion, and said guide plate being substantially horizontally disposed and extending on opposite side of the axis of said hub, and being curved both longitudinally and transversely.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Description
5. E. SLOCUM PRQPELLER MOUNT Aug. 11. 1925. 1,549,564
Filed June 12. 1923 Patented Aug. 11, 1925.
UNITED STATES STEPHEN E. SLOCUM, 0F ARDMORE, PENNSYLVANIA.
PROPELLER MOUNT.
Application filed June 12, 1923. Serial No. 644,932.
To all whom it may concern:
Be it known that I, STEPHEN E. SLocUM, a citizen of the United States, residing at Ardmore, in the county of Montgomery and State of Pennsylvania, have invented certain new and useful Improvements in Propeller Mounts; and I do hereby declare the following to be a full, clear, and exact description of the invention, ach as will enable others skilled in the art to which it appertains to make and use the same.
The present invention relates to a propelling means for water craft such as small pleasure boats and ocean vessels and has for its object to minimize the resistance of the flow to the propeller and direct the flow therefrom and prevent rotation of the wake.
A further object of the invention is to locate the strut in the rear of the propeller and thereby prevent its obstructing the flow of the water thereto.
The invention also has for its object to construct the strut with a hydrofoil sect-ion with the result of minimizing the resistance to flow as well as directing the flow from the propeller and preventing eddying formation and rotation of the wake.
A further object of the invention is to compensate for the inclination of the propeller shaft by providing a guide plate whereby to direct the water and thereby materially assist the action of the propeller.
Other objects and advantages will be apparent and suggest themselves as the nature of the invention is understood.
While the drawings illustrate an embodiment of the invention it is to be understood that in adapting the same to meet diiferent conditions and requirements, various changes in the form, proportion, arrangement, and minor details of construction may be resorted to Without departing from the nature of the invention.
Referring to the accompanying drawings forming a part of the application Figure 1 is a side view of the stern portion of a boat illustrative of the invention,
Figure 2 is a diagrammatic view showing the parts on a larger scale, the propeller being omitted and the propeller shaft being indicated by the dotted lines,
Figure 3 is a front view, the circular dotted lines indicating the position of the propeller, and
Figure l is a sectional view of a strut.
Corresponding and like parts are referred to in the following description and designated in the several viewsof the drawings by like reference characters.
The numeral 1 designates the hull or body of a boat, 2 is a propeller disposed aft beneath the stern or a wing screw in the case of a twin screw vessel, and 3 the propeller shaft which may, or may not, be inclined to the horizontal. These parts may be of any usual construction and arrangement.
The strut forming a mount for the rear end of the propeller shaft 3 comprises a hub 4 forming a bearing for the propeller shaft, and arms 5 and is located in the rear of the propeller 2 so as not to obstruct the flow thereto, and likewise to prevent rotation of the wake. As shown most clearly in Figure 4, the arms comprising the strut have a hydro-foil outline in cross section which results in reducing the resistance and in directing the flow from the propeller as well as obviating eddying and preventing rotation of the wake. By locating the strut in the rear of the propeller, it does not impede the flow of the water thereto and assists ma terially in directing the flow therefrom.
To enable the use of a relatively large propeller and to compensate in a measure for the inclination of the shaft 3, a guide plate 6 is carried by the strut and is disposed below the propeller and curves longitudinally and laterally, whereby to direct the flow from the propeller. Specifically this guide plate diverts the flow of water from an inclined direction to a horizontal direction and thereby increases the etficiency of propulsion. The guide plate extends forwardly of the strut so as to underlap the propeller and inthe preferable construction, the guide plate is of hydrofoil outline in cross section. The invention is such as to be applied to craft of every nature impelled by means of a screw propeller, the purpose being to facilitate the flow to the propeller and direct the flow therefrom and to prevent eddying and rotation of the wake.
What is claimed is:
1. Water craft having a propeller disposed beneath its stern, a shaft for said propeller, a strut located in the rear of the propeller and constituting a bearing for said shaft, and said strut having arms substan tially of hydrofoil outline whereby they will receive the water tangentially as it leaves the propeller and change the direction of flow to a direction straight astern,
said strut being arranged with but single arm below said bearing, the latter arm being vertical with its axis intersecting the bearing.
2. ater craft having a propeller disposed beneath the stern, and means beneath the stern substantially of hydrofoil outline to receive the water tangentially as it leaves the propeller and change the direction of flow to a direct-ion straight astern, said means being provided with a single arm below said bearing, the arm being vertical with its axis intersecting the bearing.
3. Water craft having propeller, and a guide means associated therewith arranged to divert the flow of water therefrom from an inclined direction to horizontal direction to increase the efiiciency of propulsion, said guide means having an arm extending below and in vertical alinementwith the bearing, and said arm at its lower end having a guide plate.
a. ater craft having a propeller disposed beneath the stern, a shaft for said propeller, a strut located in the rear of the propeller having a hub constituting a bearing for the shaft, arms radiating from the hub, said arms being substantially of hydrofoil outline whereby they will receive the water tangentially as it leaves the propeller and change the direction of flow to a direction straight astern, said arms and hub being integral, and a guide plate integral with one of said arms arranged to direct the flow of water from an inclined direction from the propeller to a horizontal direction to thereby increase the efiiciency of propulsion.
5. ater craft having a propellor disposed beneath the stern, a shaft for said propeller, a strut located in the rear of the propeller having a hub constituting a bearing for the shaft, arms radiating from the hub, said arms being substantially of hydrofoil outline whereby they will receive the water tangentially as it leaves the propeller and change the direction of flow to a direction straight astern, said arms and hub being integral, and a guide plate integral with one of said arms arranged to direct the flow of water from an inclined direction from the propeller to a horizontal direction to thereby increase the efiiciency of propulsion, and said guide plate being substantially horizontally disposed and extending on opposite side of the axis of said hub, and being curved both longitudinally and transversely.
In testimony whereof I afiix my signature.
STEPHEN E. SLOCUM.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US644932A US1549564A (en) | 1923-06-12 | 1923-06-12 | Propeller mount |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US644932A US1549564A (en) | 1923-06-12 | 1923-06-12 | Propeller mount |
Publications (1)
Publication Number | Publication Date |
---|---|
US1549564A true US1549564A (en) | 1925-08-11 |
Family
ID=24586947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US644932A Expired - Lifetime US1549564A (en) | 1923-06-12 | 1923-06-12 | Propeller mount |
Country Status (1)
Country | Link |
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US (1) | US1549564A (en) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2905131A (en) * | 1954-05-05 | 1959-09-22 | Erich R F Maier | Screw propeller mounting |
US2974628A (en) * | 1958-10-20 | 1961-03-14 | Robert W Erlbacher | Twisted strut construction for marine bearing with forwardly mounted propeller |
US3236570A (en) * | 1962-12-26 | 1966-02-22 | Satterthwaite James Glenn | Demountable stern housing for marine bearings and method of using the same |
US3433195A (en) * | 1967-08-23 | 1969-03-18 | Charles W Poole | Hydrofoil device for outboard motors |
US4235183A (en) * | 1978-02-21 | 1980-11-25 | Outboard Marine Corporation | Marine propulsion device including propeller protection means |
WO1988003891A1 (en) * | 1986-11-20 | 1988-06-02 | Mariko A/S | Manoeuvring device for boats |
US4932908A (en) * | 1988-03-03 | 1990-06-12 | United States Of America | Energy efficient asymmetric pre-swirl vane and twisted propeller propulsion system |
US4995840A (en) * | 1989-08-04 | 1991-02-26 | Hydrofoil International, Inc. | Stabilizing fin for a motor boat |
US5007869A (en) * | 1990-03-13 | 1991-04-16 | Zoellner Allen W | Prop-saver (propeller guard device) |
US5178089A (en) * | 1991-09-09 | 1993-01-12 | Arnold Hodel | Motor boat hydrofoil |
US5209642A (en) * | 1988-03-03 | 1993-05-11 | The United States Of America As Represented By The Secretary Of Transportation | Modified optimum pitch propeller |
US6558213B1 (en) * | 1999-05-17 | 2003-05-06 | Bombardier Motor Corporation Of America | High performance engine skeg |
US20060124044A1 (en) * | 2002-08-28 | 2006-06-15 | Pieter Van Oossanen | Vessel provided with a foil situated below the waterline |
US20070017428A1 (en) * | 2002-08-28 | 2007-01-25 | Pieter Van Oossanen | Vessel provided with a foil situated below the waterline |
US20080105187A1 (en) * | 2003-12-23 | 2008-05-08 | Jonathan Sebastian Howes | Waterborne Vessel With Loop Keel |
WO2011144239A1 (en) * | 2010-05-19 | 2011-11-24 | Wärtsilä Finland Oy | Rotational energy recovery appendage |
CN109070981A (en) * | 2016-04-28 | 2018-12-21 | 日本日联海洋株式会社 | The propulsion device of multiple screw ship |
-
1923
- 1923-06-12 US US644932A patent/US1549564A/en not_active Expired - Lifetime
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2905131A (en) * | 1954-05-05 | 1959-09-22 | Erich R F Maier | Screw propeller mounting |
US2974628A (en) * | 1958-10-20 | 1961-03-14 | Robert W Erlbacher | Twisted strut construction for marine bearing with forwardly mounted propeller |
US3236570A (en) * | 1962-12-26 | 1966-02-22 | Satterthwaite James Glenn | Demountable stern housing for marine bearings and method of using the same |
US3433195A (en) * | 1967-08-23 | 1969-03-18 | Charles W Poole | Hydrofoil device for outboard motors |
US4235183A (en) * | 1978-02-21 | 1980-11-25 | Outboard Marine Corporation | Marine propulsion device including propeller protection means |
WO1988003891A1 (en) * | 1986-11-20 | 1988-06-02 | Mariko A/S | Manoeuvring device for boats |
US4895093A (en) * | 1986-11-20 | 1990-01-23 | Dalsboe Ola K | Manoeuvring device for boats |
US5209642A (en) * | 1988-03-03 | 1993-05-11 | The United States Of America As Represented By The Secretary Of Transportation | Modified optimum pitch propeller |
US4932908A (en) * | 1988-03-03 | 1990-06-12 | United States Of America | Energy efficient asymmetric pre-swirl vane and twisted propeller propulsion system |
US4995840A (en) * | 1989-08-04 | 1991-02-26 | Hydrofoil International, Inc. | Stabilizing fin for a motor boat |
US5007869A (en) * | 1990-03-13 | 1991-04-16 | Zoellner Allen W | Prop-saver (propeller guard device) |
US5178089A (en) * | 1991-09-09 | 1993-01-12 | Arnold Hodel | Motor boat hydrofoil |
US6558213B1 (en) * | 1999-05-17 | 2003-05-06 | Bombardier Motor Corporation Of America | High performance engine skeg |
US20060124044A1 (en) * | 2002-08-28 | 2006-06-15 | Pieter Van Oossanen | Vessel provided with a foil situated below the waterline |
US20070017428A1 (en) * | 2002-08-28 | 2007-01-25 | Pieter Van Oossanen | Vessel provided with a foil situated below the waterline |
US7617793B2 (en) | 2002-08-28 | 2009-11-17 | Van Oossanen & Associates | Vessel provided with a foil situated below the waterline |
US20080105187A1 (en) * | 2003-12-23 | 2008-05-08 | Jonathan Sebastian Howes | Waterborne Vessel With Loop Keel |
US7841285B2 (en) * | 2003-12-23 | 2010-11-30 | Jonathan Sebastian Howes | Waterborne vessel with loop keel |
WO2011144239A1 (en) * | 2010-05-19 | 2011-11-24 | Wärtsilä Finland Oy | Rotational energy recovery appendage |
CN109070981A (en) * | 2016-04-28 | 2018-12-21 | 日本日联海洋株式会社 | The propulsion device of multiple screw ship |
EP3450299A4 (en) * | 2016-04-28 | 2019-11-06 | Japan Marine United Corporation | Propulsion device for multi-shaft ship |
CN109070981B (en) * | 2016-04-28 | 2021-07-13 | 日本日联海洋株式会社 | Propulsion unit for multi-shaft ship |
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