US33077A - Screw-propeller - Google Patents
Screw-propeller Download PDFInfo
- Publication number
- US33077A US33077A US33077DA US33077A US 33077 A US33077 A US 33077A US 33077D A US33077D A US 33077DA US 33077 A US33077 A US 33077A
- Authority
- US
- United States
- Prior art keywords
- propeller
- blades
- screw
- axis
- passing
- 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
- 210000000614 Ribs Anatomy 0.000 description 4
- 244000132069 Carica monoica Species 0.000 description 2
- 235000014649 Carica monoica Nutrition 0.000 description 2
- 240000004559 Cuminum cyminum Species 0.000 description 2
- 235000007129 Cuminum cyminum Nutrition 0.000 description 2
- 206010039580 Scar Diseases 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000004301 light adaptation Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
Definitions
- My present invention has for its object the prevention of the great loss of power result ing from the centrifugal action imparted to the water by the propeller and consists in the adaptation of a flange to the outer edge Of the blades in a manner which will now be more particularly described.
- A is the hub, B the blades of the propeller, to the outer edges of which are adapted flanges C, which project perpendicularly from the outer edges of the blades and are concentric with the axis of the propeller.
- the flanges project forward from the extreme pointf of the advancing edges of the blades and disappear at the extreme point g 'of their rear edges.
- the size and shape of flange which I have found to produce the greatest results being determined by a plane perpendicular to the axis of the propeller and passing through the points g cutting the flanges in the lines g, i, and by a plane passing through the axis Of the propeller and the point f and cutting the flange in the line f, z.. These exact proportions are not rigidr but they are those which I have found vafter many trials ⁇ and experiments to produce the best results.
Description
N cumin scares erreur carica.
HARRISON ELLIOTT, OF BOSTON, MASSACHUSETTS.
SCREW-PROPELLER.
Specification of Letters Patent No. 33,077, dated August 20, 1861.
To all 'whom it may concern:
Be it known that I, HARRISON ELLIOTT, of Boston, in the county of Suffolk and State of Massachusetts, has invented an Improved Flanged-Blade Propeller, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in which- Figure l is a perspective view of my improved propeller, Fig. 2 a side, Fig. 3 a front and Fig. t an end view of the same.
The effort has been made to 'prevent the centrifugal action of propellers upon the water by means of transverse ribs upon the working surface of their blades. Such pr0- pellers have however not been successful as the ribs being of equal height across the whole width of the blades have tended only to carry the water around with them and have not answered the desired purpose. I am also aware that the outer edges of propeller blades have been curved forward for the same purpose, but withoutelfecting any useful result; such propeller is also deficient in power when required to back and has never so far as I am informed come into use.
My present invention has for its object the prevention of the great loss of power result ing from the centrifugal action imparted to the water by the propeller and consists in the adaptation of a flange to the outer edge Of the blades in a manner which will now be more particularly described.
In the accompanying drawings A is the hub, B the blades of the propeller, to the outer edges of which are adapted flanges C, which project perpendicularly from the outer edges of the blades and are concentric with the axis of the propeller.
The flanges project forward from the extreme pointf of the advancing edges of the blades and disappear at the extreme point g 'of their rear edges. The size and shape of flange which I have found to produce the greatest results being determined by a plane perpendicular to the axis of the propeller and passing through the points g cutting the flanges in the lines g, i, and by a plane passing through the axis Of the propeller and the point f and cutting the flange in the line f, z.. These exact proportions are not rigidr but they are those which I have found vafter many trials `and experiments to produce the best results.
The water from a propeller thus constructed is not thrown centrifugally but in an unbroken column directly to the rear and the consequence is a great increase of speed,
the propelling power and other attendant circumstances remaining the saine. A
`What I claim as my invention andcdesire to secure by Letters Patent is- The flanged blade propeller herein idescribed, the form of the iianges being determined by a plane perpendicular to the axis of the propeller and passing through the rear corners of the blades and a plane parallel to the axis of the propeller and passing through the advance corner of the blades substantially as set forth.
HARRISON ELLIOTT.
Witnesses SAM. COOPER, EDMUND MASSON.
Publications (1)
Publication Number | Publication Date |
---|---|
US33077A true US33077A (en) | 1861-08-20 |
Family
ID=2102682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US33077D Expired - Lifetime US33077A (en) | Screw-propeller |
Country Status (1)
Country | Link |
---|---|
US (1) | US33077A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498170A (en) * | 1946-06-04 | 1950-02-21 | Meier Gustav | Propeller blades |
US2582107A (en) * | 1949-06-25 | 1952-01-08 | Guy L Dakin | Propeller blade |
US5215441A (en) * | 1991-11-07 | 1993-06-01 | Carrier Corporation | Air conditioner with condensate slinging fan |
US6000935A (en) * | 1997-02-21 | 1999-12-14 | Troxler Electronic Laboratories, Inc | Adjustable apparatus for pyrolysis of a composite material and method of calibration therefor |
US6352408B1 (en) * | 2000-10-16 | 2002-03-05 | Robert B. Kilian | Slip inhibiting boat propeller |
US7025642B1 (en) | 2004-09-16 | 2006-04-11 | Lear Baylor, Inc. | Boat propeller |
US10539157B2 (en) | 2015-04-08 | 2020-01-21 | Horton, Inc. | Fan blade surface features |
-
0
- US US33077D patent/US33077A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2498170A (en) * | 1946-06-04 | 1950-02-21 | Meier Gustav | Propeller blades |
US2582107A (en) * | 1949-06-25 | 1952-01-08 | Guy L Dakin | Propeller blade |
US5215441A (en) * | 1991-11-07 | 1993-06-01 | Carrier Corporation | Air conditioner with condensate slinging fan |
US6000935A (en) * | 1997-02-21 | 1999-12-14 | Troxler Electronic Laboratories, Inc | Adjustable apparatus for pyrolysis of a composite material and method of calibration therefor |
US6352408B1 (en) * | 2000-10-16 | 2002-03-05 | Robert B. Kilian | Slip inhibiting boat propeller |
US7025642B1 (en) | 2004-09-16 | 2006-04-11 | Lear Baylor, Inc. | Boat propeller |
US10539157B2 (en) | 2015-04-08 | 2020-01-21 | Horton, Inc. | Fan blade surface features |
US10662975B2 (en) | 2015-04-08 | 2020-05-26 | Horton, Inc. | Fan blade surface features |
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