US17276A - Propeller-blade - Google Patents
Propeller-blade Download PDFInfo
- Publication number
- US17276A US17276A US17276DA US17276A US 17276 A US17276 A US 17276A US 17276D A US17276D A US 17276DA US 17276 A US17276 A US 17276A
- Authority
- US
- United States
- Prior art keywords
- blade
- wheel
- propeller
- blades
- lines
- 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 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003292 diminished effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
- B63H1/14—Propellers
- B63H1/26—Blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
- F05B2240/32—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor with roughened surface
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Definitions
- the nature of my invention consists in making the blades of propeller wheels of peculiar form and shape having radial lines of a combination of straight and curved lines; the front or entering edge, (A,) of the blade being a perfectly straight line perpendicular to the aXis of the wheel; from the point (1,) of the front edge of the blade to the back edge (B,) the outer edge of the blade from la to 16p, has a regularly increasing curved surface, thereby presenting in its action upon the water a constantly changing form of blade whereby the efficiency of the wheel is greatly increased.
Description
UNITED sTATEs PATENT oEEioE.
GEORGE HIBSCH, OF BUFFALO, NEW YORK.
PROPELLER-BLADE.
Specication of Letters Patent No. 17,276, dated May 12, 1857.
To all wiz-0m t may concern:
Be it known that I, GEORGE I-IIBscH, of
Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Propeller-Wheels; and I hereby declare the following to be a full and exact description thereof, reference being had to the annexed drawings, making a part of this specilcation, in which- Figure l, is an elevation of the hub and one of the blades of the wheel; Fig. 2, a plan of the saine; Fig. 3, a diagram for obtaining the radii for the curves at the outer edge of the blade; and Fig. 4l, the radial surface lines for each division of the blade as herein laid down.
The nature of my invention consists in making the blades of propeller wheels of peculiar form and shape having radial lines of a combination of straight and curved lines; the front or entering edge, (A,) of the blade being a perfectly straight line perpendicular to the aXis of the wheel; from the point (1,) of the front edge of the blade to the back edge (B,) the outer edge of the blade from la to 16p, has a regularly increasing curved surface, thereby presenting in its action upon the water a constantly changing form of blade whereby the efficiency of the wheel is greatly increased.
In constructing my wheel I use t-he following formula for obtaining the curves for the blades; the diameter of the wheel and the length of the arc of the blade being given, I take the length of this arc as a radius, and with a distance equal to from one eighth to one sixth of the diameter of the wheel, (varying this proportion to the work the wheel is designed for.) I draw the sector l-lf, Fig. 3, and divide one of its radial lines into the same number of equal parts as are drawn in the arc of the blade, and with the point l as a common center I draw arcs from each division to meetthe other radial line, then the chords of the arcs 2bh-td-5, etc., will be the radii for the curves for the corresponding divisions of the blades as shown in Fig. 2, in which the portion of the blade contained within the lines 146D, shows the curved surface of the blade, the remaining portion thereof being a section of the thread of a true screw.
In laying down the diagram for obtaining the radii, I do not confine myself to the proportion herein given for obtaining the radius for the greatest curve at the back edge of the blade as the same may be increased' or diminished as circumstances may require, the other radii being altered in a corresponding ratio thereto.
Among the advantages I claim for my wheel over those in common use, is an increased hold upon the water by reason of its varying surface, thereby lessening` the loss of effect from slip and by means of its curved surface confining the water deiiected from the center of the wheel thereby receiving the benefit of the force of the centrifugal discharge, which is lost in the common forms of screw propellers.
What I claim as my invention, and desire to secure by Letters Patent, is
Constructing propeller wheels having blades formed substantially as herein described and for the purposes set forth.
p GEORGE IIIBSOI-I. Witnesses:
MICHAEL I-IIBscH,
B. F. PRIMROSE.
Publications (1)
Publication Number | Publication Date |
---|---|
US17276A true US17276A (en) | 1857-05-12 |
Family
ID=2079610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17276D Expired - Lifetime US17276A (en) | Propeller-blade |
Country Status (1)
Country | Link |
---|---|
US (1) | US17276A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2903076A (en) * | 1956-01-06 | 1959-09-08 | Johannesen Bjarne | Propeller assembly |
-
0
- US US17276D patent/US17276A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2903076A (en) * | 1956-01-06 | 1959-09-08 | Johannesen Bjarne | Propeller assembly |
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