US442615A - Marine propulsion - Google Patents
Marine propulsion Download PDFInfo
- Publication number
- US442615A US442615A US442615DA US442615A US 442615 A US442615 A US 442615A US 442615D A US442615D A US 442615DA US 442615 A US442615 A US 442615A
- Authority
- US
- United States
- Prior art keywords
- propeller
- marine propulsion
- marine
- casing
- screw
- 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 8
- 210000003800 Pharynx Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 241000272168 Laridae Species 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
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- 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
-
- 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
- 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
- B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
Definitions
- This invention relates to marine propulsion, and has forits object the increased efficiency of screw-propellers by an improved form of easing or guide surrounding the propeller and directing the water to and from the screw.
- FIG. 1 shows a vertical longitudinal section of the propeller-casing embodying this invention as applied to a screw-propeller at the stern of a vessel.
- FIGs. 2 and 3 show similar sections of modified forms of the easing, and Figs. 4, 5, and 6, respectively, transverse sections in the planes indicated by the dotted lines :0, y, and z in Figs. 1, 2, and 3.
- 1 is the casing, made cylindrical or conical in external form and internally tapering in curved lines from the forward end toward the center, forming a throat where it is of smallest in tern al diameter, and enlargingin straight or curved linesaft of the propeller.
- oblique openings 3 (preferably tapering in form,) inclined so as to diverge toward the rear of the casing, which openings 3 permit water to enter from the exterior of the casing and discharge water rearwardly.
- the direction of motion of the vessel is indicated by the horizontal arrows marked on Figs. 1, 2, and 3 and the direction of rotation of the propeller by the vertical arrows in Figs. 1, 2, and 3 and by the curved arrows in Figs. 4, 5, and 6.
- the opening 3 is single and annular. As shown in Figs. 2 and 5, there are several annular openings, and, as shown in Figs. 3 and 6, the openings 3 are made helical, with an angular inclination in the direction of the motion of the propeller, similar to the manner in which the guides of reaction water-wheels are inclined oppositely to the inclination of the blades or floats of the rotating wheel.
- the effect of such guides applied to a screw-propeller is to increase the progress of the propeller and vessel through the water and to exert a stronger propelling effect with the same driving power.
- What I claim is 1.
- a screwpropeller in combination with a surrounding case having the forward internal portion contracting in curved lines toward the propeller and rearwardly expanding therefrom, sulostantially as set forth.
- a screwpropeller in combination with a surrounding case having an interior converging from the forward end in curved lines toward the propeller and rearwardly expanding therefrom and provided with diverging apertures, substantially as shown and described.
- a screwpropeller in combination with a surrounding case having an interior contracting in curved lines from the forward end to a contracted throat and expanding aft thereof and provided with diverging helically-inclined apertures, substantially as set forth and described.
Description
(No Model.)
H. DOCK. MARINE PROPULSION.
No. 442,615. Patented Dec. 16, 1890.
INVENTQR WITNESSES UNITED STATES HERMAN DOCK, OF PHILADELPHIA, PENNSYLVANIA.
MARINE PROPULSION.
SPECIFICATION forming part of Letters Patent No. 442,615, dated December 16, 1890. Application filed June 16, 1890. Serial No. 355,676. (No model.)
To all whom, it may concern:
Be it known that I, HERMAN DOCK, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, haveinvented certain new and useful Improvements in Apparatus for Marine Propulsion; and I do hereby declare the following to be a sufficiently full, clear, and exact description thereof to enable others skilled in the art to make and use the said invention.
This invention relates to marine propulsion, and has forits object the increased efficiency of screw-propellers by an improved form of easing or guide surrounding the propeller and directing the water to and from the screw.
The invention is shown in the accompanying drawings, in which- Figure 1 shows a vertical longitudinal section of the propeller-casing embodying this invention as applied to a screw-propeller at the stern of a vessel. Figs. 2 and 3 show similar sections of modified forms of the easing, and Figs. 4, 5, and 6, respectively, transverse sections in the planes indicated by the dotted lines :0, y, and z in Figs. 1, 2, and 3.
1 is the casing, made cylindrical or conical in external form and internally tapering in curved lines from the forward end toward the center, forming a throat where it is of smallest in tern al diameter, and enlargingin straight or curved linesaft of the propeller. Through the casing l are oblique openings 3, (preferably tapering in form,) inclined so as to diverge toward the rear of the casing, which openings 3 permit water to enter from the exterior of the casing and discharge water rearwardly.
The direction of motion of the vessel is indicated by the horizontal arrows marked on Figs. 1, 2, and 3 and the direction of rotation of the propeller by the vertical arrows in Figs. 1, 2, and 3 and by the curved arrows in Figs. 4, 5, and 6.
As shown in Figs. 1. and i, the opening 3 is single and annular. As shown in Figs. 2 and 5, there are several annular openings, and, as shown in Figs. 3 and 6, the openings 3 are made helical, with an angular inclination in the direction of the motion of the propeller, similar to the manner in which the guides of reaction water-wheels are inclined oppositely to the inclination of the blades or floats of the rotating wheel. The effect of such guides applied to a screw-propeller is to increase the progress of the propeller and vessel through the water and to exert a stronger propelling effect with the same driving power.
Having described the invention, What I claim is 1. In a marine propelling apparatus, a screwpropeller, in combination with a surrounding case having the forward internal portion contracting in curved lines toward the propeller and rearwardly expanding therefrom, sulostantially as set forth.
2. In a marine propelling apparatus, a screwpropeller, in combination with a surrounding case having an interior converging from the forward end in curved lines toward the propeller and rearwardly expanding therefrom and provided with diverging apertures, substantially as shown and described.
3. In a marine propelling apparatus, a screwpropeller, in combination with a surrounding case having an interior contracting in curved lines from the forward end to a contracted throat and expanding aft thereof and provided with diverging helically-inclined apertures, substantially as set forth and described.
HERMAN DOCK.
\Vit-nesses:
En w. I'IAUGH, PERCY A. BIVINS.
Publications (1)
Publication Number | Publication Date |
---|---|
US442615A true US442615A (en) | 1890-12-16 |
Family
ID=2511510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US442615D Expired - Lifetime US442615A (en) | Marine propulsion |
Country Status (1)
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US (1) | US442615A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2530718A (en) * | 1945-11-13 | 1950-11-21 | Napoli John | Hull form for speedboats |
US3484039A (en) * | 1967-07-14 | 1969-12-16 | Georg S Mittelstaedt | Fans and compressors |
US3508517A (en) * | 1967-02-20 | 1970-04-28 | Kort Propulsion Co Ltd | Nozzles or shrouds for ships' propellers |
US4003671A (en) * | 1973-12-04 | 1977-01-18 | Norges Skipsforskningsinstitutt | Method and means to prevent cavitation erosion in propeller ducts |
US4240251A (en) * | 1978-05-25 | 1980-12-23 | Fuller Ronald G | Cavitation compensating propeller nozzle or duct |
US20060110272A1 (en) * | 2004-11-22 | 2006-05-25 | Mark Moore | Venturi fan |
US20080240916A1 (en) * | 2007-03-27 | 2008-10-02 | Krouse Wayne F | System and apparatus for improved turbine pressure and pressure drop control |
EP2060482A1 (en) | 2007-11-16 | 2009-05-20 | becker marine systems GmbH & Co. KG | Kort nozzle |
USD879280S1 (en) | 2018-06-29 | 2020-03-24 | Patterson Fan Company | Venturi fan |
US11584492B1 (en) | 2022-05-11 | 2023-02-21 | John De Maria | Directed thrust propulsion system |
-
0
- US US442615D patent/US442615A/en not_active Expired - Lifetime
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2530718A (en) * | 1945-11-13 | 1950-11-21 | Napoli John | Hull form for speedboats |
US3508517A (en) * | 1967-02-20 | 1970-04-28 | Kort Propulsion Co Ltd | Nozzles or shrouds for ships' propellers |
US3484039A (en) * | 1967-07-14 | 1969-12-16 | Georg S Mittelstaedt | Fans and compressors |
US4003671A (en) * | 1973-12-04 | 1977-01-18 | Norges Skipsforskningsinstitutt | Method and means to prevent cavitation erosion in propeller ducts |
US4240251A (en) * | 1978-05-25 | 1980-12-23 | Fuller Ronald G | Cavitation compensating propeller nozzle or duct |
US20060110272A1 (en) * | 2004-11-22 | 2006-05-25 | Mark Moore | Venturi fan |
WO2006058100A2 (en) * | 2004-11-22 | 2006-06-01 | Patterson Fan Company | Venturi fan |
WO2006058100A3 (en) * | 2004-11-22 | 2007-02-01 | Patterson Fan Company | Venturi fan |
US20080240916A1 (en) * | 2007-03-27 | 2008-10-02 | Krouse Wayne F | System and apparatus for improved turbine pressure and pressure drop control |
EP2060482A1 (en) | 2007-11-16 | 2009-05-20 | becker marine systems GmbH & Co. KG | Kort nozzle |
US20090130927A1 (en) * | 2007-11-16 | 2009-05-21 | Mathias Kluge | Kort nozzle |
SG152959A1 (en) * | 2007-11-16 | 2009-06-29 | Becker Marine Sys Gmbh & Co Kg | Kort nozzle |
US20100323566A1 (en) * | 2007-11-16 | 2010-12-23 | Becker Marine Systems Gmbh & Co. Kg | Kort nozzle |
CN101434292B (en) * | 2007-11-16 | 2012-06-13 | 贝克船舶系统有限及两合公司 | Kort nozzle |
US8246401B2 (en) | 2007-11-16 | 2012-08-21 | Becker Marine Systems Gmbh & Co., Kg | Kort nozzle |
USD879280S1 (en) | 2018-06-29 | 2020-03-24 | Patterson Fan Company | Venturi fan |
US11584492B1 (en) | 2022-05-11 | 2023-02-21 | John De Maria | Directed thrust propulsion system |
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