US1307834A - Propeller - Google Patents
Propeller Download PDFInfo
- Publication number
- US1307834A US1307834A US1307834DA US1307834A US 1307834 A US1307834 A US 1307834A US 1307834D A US1307834D A US 1307834DA US 1307834 A US1307834 A US 1307834A
- Authority
- US
- United States
- Prior art keywords
- vanes
- propeller
- shaft
- water
- successive
- 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 18
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
Images
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
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- 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
- B64C11/46—Arrangements of, or constructional features peculiar to, multiple propellers
- B64C11/48—Units of two or more coaxial propellers
Definitions
- JOHN "0. RYAN, or TORONTO, ONTARIO, CANADA.
- the principal object of the invention is to increase the gripping area of the propeller and thus effect a greater propelling eiliciency thereby obtaining more effective results from the power plant. 7
- the principal feature of the invention consists in the novel construction and arrangement of a plurality of spiral vanes upon the shaft whereby the water is forced from one blade to the other in successive propelling contact.
- Figure 1 is a longitudinal elevational view of my improved propeller.
- F 2 is a longitudinal elevational view taken at right anglesto the view shown in Fig. 1.
- Fig. 3 is a rear end elevational view.
- the propeller is formed of a tubular shaft 1 which is adapted to be placed upon and secured to the propeller shaft of the vessel.
- a pair of oppositely arranged spirally formed vanes or blades 2 Secured to the shaft 1 at one end are a pair of oppositely arranged spirally formed vanes or blades 2 which in elevation are substantially semi-circular, having the rounded forward ends 3 adapted to cut into the water.
- vanes 4 are a pair of vanes, similarly formed to the vanes 2 but of larger dimensions having their forward ends 5 meeting the tail ends 6 of the vanes 52- at an intersecting angle close in to the shaft.
- vanes 7 are another and similar pair of vanes arranged upon the shaft so that the forward ends 8 intersect the tail ends 9 of the vanes l.
- the intersecting arrangement of the vanes also insures the engagement of the dead water not engaged by the preceding vanes consequently the effect in rotation is that the first set of vanes sets up a flow of water in one direction and this flow is intercepted by the second set and along with a quantity of area of water not directly disturbed by the first set is forced in a direction at variance with the first flow.
- Vhat I claim as my invention is:
- a propeller comprising, a shaft, and a plurality of spirally formed vanes arranged in pairs, the plane surface of the forward ends of each successive pair being arranged to intersect the plane surface of the rearward ends of the preceding pair of vanes.
- a propeller comprising, a shaft, and a plurality of vanes of substantially semicircular form secured to said shaft in spiral arrangement, said vanes being arranged in opposing pairs and the successive pairs having their forward ends intersecting the tail ends of the preceding pair.
- a propeller comprising, a shaft, and a plurality of sets of spiral vanes secured to said shaft and arranged in successive intersecting sets, each successive set being of larger dimensions than the preceding set.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Hydraulic Turbines (AREA)
Description
J. C. RYAN.
PROPELLER.
APPLICATION FILED JAN.19, 1911.
1 07,834. Patented June 24, I919.
UNITED STATES PATENT OFFICE.
JOHN "0. RYAN, or TORONTO, ONTARIO, CANADA.
PROPIELLER.
To all whom it may concern:
Be it known that 1, JOHN CARL RYAN, a subyect of the King of Great Britain, and resident of the city of Toronto, county of York, Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improvements in Propellers, described in the following specification and illustrated in the acco-n'ipanying drawings,
that form part of the same.
The principal object of the invention is to increase the gripping area of the propeller and thus effect a greater propelling eiliciency thereby obtaining more effective results from the power plant. 7
The principal feature of the invention consists in the novel construction and arrangement of a plurality of spiral vanes upon the shaft whereby the water is forced from one blade to the other in successive propelling contact.
In the drawings Figure 1 is a longitudinal elevational view of my improved propeller.
Fig. 3 is a rear end elevational view.
The propeller is formed of a tubular shaft 1 which is adapted to be placed upon and secured to the propeller shaft of the vessel.
Secured to the shaft 1 at one end are a pair of oppositely arranged spirally formed vanes or blades 2 which in elevation are substantially semi-circular, having the rounded forward ends 3 adapted to cut into the water.
4 are a pair of vanes, similarly formed to the vanes 2 but of larger dimensions having their forward ends 5 meeting the tail ends 6 of the vanes 52- at an intersecting angle close in to the shaft.
7 are another and similar pair of vanes arranged upon the shaft so that the forward ends 8 intersect the tail ends 9 of the vanes l.
The intersecting arrangement of the suc cessive pairs of vanes is a very important feature of the device as each vane presents an edge to the water in such a way as to cut through the water with practically no resistance to rotation and the successive vanes Specification of Letters Patent. Patented June 24, 1919.
Application filed January 19, 1917.
Serial No.'143,394.
being angularly set in relation to the preceding vanes receive the full impact of the water forced backwardly by the preceding vanes.
This peculiar action insures the maximum resistance to the screw and eliminates a spiral swirl which would occur with a continuous spiral or set of spiral vanes.
The intersecting arrangement of the vanes also insures the engagement of the dead water not engaged by the preceding vanes consequently the effect in rotation is that the first set of vanes sets up a flow of water in one direction and this flow is intercepted by the second set and along with a quantity of area of water not directly disturbed by the first set is forced in a direction at variance with the first flow.
This action is repeated by the succeeding set or sets of vanes and the succeeding sets are formed in increased diameters'to render the resistance increasingly effective as the water is given greater momentum.
lVith the use of a propeller such as de scribed a boat may be driven with much greater speed with a given power than'can be achieved with the present forms of propellers.
Vhat I claim as my invention is:
1. A propeller, comprising, a shaft, and a plurality of spirally formed vanes arranged in pairs, the plane surface of the forward ends of each successive pair being arranged to intersect the plane surface of the rearward ends of the preceding pair of vanes.
2. A propeller, comprising, a shaft, and a plurality of vanes of substantially semicircular form secured to said shaft in spiral arrangement, said vanes being arranged in opposing pairs and the successive pairs having their forward ends intersecting the tail ends of the preceding pair.
3. A propeller, comprising, a shaft, and a plurality of sets of spiral vanes secured to said shaft and arranged in successive intersecting sets, each successive set being of larger dimensions than the preceding set.
JOHN C. RYAN Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.
Publications (1)
Publication Number | Publication Date |
---|---|
US1307834A true US1307834A (en) | 1919-06-24 |
Family
ID=3375348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1307834D Expired - Lifetime US1307834A (en) | Propeller |
Country Status (1)
Country | Link |
---|---|
US (1) | US1307834A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139391A (en) * | 1988-03-24 | 1992-08-18 | Pierre Carrouset | Rotary machine with non-positive displacement usable as a pump, compressor, propulsor, generator or drive turbine |
-
0
- US US1307834D patent/US1307834A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5139391A (en) * | 1988-03-24 | 1992-08-18 | Pierre Carrouset | Rotary machine with non-positive displacement usable as a pump, compressor, propulsor, generator or drive turbine |
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