US933013A - Propeller. - Google Patents

Propeller. Download PDF

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Publication number
US933013A
US933013A US49244009A US1909492440A US933013A US 933013 A US933013 A US 933013A US 49244009 A US49244009 A US 49244009A US 1909492440 A US1909492440 A US 1909492440A US 933013 A US933013 A US 933013A
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United States
Prior art keywords
blades
propeller
curved
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
Application number
US49244009A
Inventor
Joseph F Ball
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHARLES C BILLS
P D CUTLER
FREDERICK W BALL
Original Assignee
CHARLES C BILLS
FREDERICK W BALL
P D CUTLER
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHARLES C BILLS, FREDERICK W BALL, P D CUTLER filed Critical CHARLES C BILLS
Priority to US49244009A priority Critical patent/US933013A/en
Application granted granted Critical
Publication of US933013A publication Critical patent/US933013A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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

  • My invention relates to propellers.
  • Fig. 2 is a real' view.
  • Fig. 3 is a section on X-X, Fig. 2.
  • Fig. et is a section on Y-Y, Fig. 1..
  • a repi'esent's a propeller shaft provided with two or more blades 2, and with the outer end of the shaft continued beyond the blades and tapei'ed and concaved to form a concaved conical projection 3.
  • These'blades are set in such position to the shaft and are so fashioncd as to cause a congestion of the water toward the center of the wheel, thereby creating a greater pressure on the surface of the blades, and at'the same time sending or forcing the water straight back in the line of the axis of the propeller.
  • the outer or"eX- treme points of the blades are Curved, as shown at 5, so that these Curved ends lie substantially parallel to the, shaft.
  • the rear edges 6 of the blades are each curved before bending the fianges, in an are of a semicircle (see dotted lines, Fig. 2) and these rear ed es are higher than the front Cutting edges o the blades, since'thelatter are transi versely dished, so that this transverse dish, taken with the longitudinal dish formed by the curved ends 5, gives the appearance of' a cup when the propeller is spun rapidly; and
  • a propeller having a lurality of blades with their Operating sur accs transversely dished, and also with the ends of the blades curved backwardly to form ianges 'which are substantially parallel with the axis of the propeller, and a conical extension on the hub of the propeller beyond theblades, said cenie-al projection having'conczwed sides. ⁇
  • a propeller having a plurality of blades with their. opcrafting surfaces tral'isversely dished, and also with the ends of the blades ;Curved baclnvardly to form tlanges which are substzntially parallel with the axis of the propeller, the blades being' of-such shape that if the flanges and body were opened out into the same plane the back vedg-esV of the blades would be approximately an are of a semi-circle.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Description

J. F. BALL.
PROPELLEB.
APPLIOATION rILnD M127, 1909.
Patented Aug. 31, 1909.
m'z'nsses; *221% f UNITED sTATEs PATENT OFFICE.
JOSEPH F. BALL, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-FOURTH T CHARLES C.
BILLs, oNE-roim'm To P. D. cU'rLER, AND FRANcIsco, CALIFORNIA.
PROPE ONE-FOURTH T0 FREDERICK W. BALL', OF SAN' LLER.
Letters Patent. Patonted Aug. 31, 1909.
Application filed April 27, 1909. Serial No. 492,440.
To a/ whom it may concem: le it known that I, J'su'rII F. BALL, a citizen of the United States, residing in the city and county of San Francisco and State of California, have invented new and useful linprovemcnts in Propellers, of which the .following is a specification.
My invention relates to propellers.
llcretofore it has been considered a desideratuiu thatI the propellerblades should' throw the water off centrifugally. I have devised a propeller with blades of peculiar design curved on geometrical lines so that the water is directed backward, more on lines parallel with -the axis of the shaft, so as to get. a greater push against the body of water and give additional speed to the boat.
'l`he invention consists of the parts and the construction and con'ibination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, iniwhich- Figure l is a. side elevation of the invention. Fig. 2 is a real' view. Fig. 3 is a section on X-X, Fig. 2. Fig. et is a section on Y-Y, Fig. 1..
lu the embodiment of the invention, A repi'esent's a propeller shaft provided with two or more blades 2, and with the outer end of the shaft continued beyond the blades and tapei'ed and concaved to form a concaved conical projection 3. These'blades are set in such position to the shaft and are so fashioncd as to cause a congestion of the water toward the center of the wheel, thereby creating a greater pressure on the surface of the blades, and at'the same time sending or forcing the water straight back in the line of the axis of the propeller. The outer or"eX- treme points of the blades are Curved, as shown at 5, so that these Curved ends lie substantially parallel to the, shaft. The rear edges 6 of the blades are each curved before bending the fianges, in an are of a semicircle (see dotted lines, Fig. 2) and these rear ed es are higher than the front Cutting edges o the blades, since'thelatter are transi versely dished, so that this transverse dish, taken with the longitudinal dish formed by the curved ends 5, gives the appearance of' a cup when the propeller is spun rapidly; and
it is this cup which acts on the water and` forces it backward in the form of a column substantially in the line of the shaft. By forming the concal project-ion 3 with the concaved sides, the 'void usually formed by pro}')ellers around the base of the blades is in part filled, and also the concaved sides of the part 3 form defiecting surfaces for the reactance of the water forced inwardly by these dish-shaped blades.
I claim that curved blades at the extreme points, as shown, give a better hold on the water for the blades, insuring less slip and greater speed.
l'laving thus described my invention, what l claim and desire to secure by Letters .Pat-
ent is- 1.. A propeller having a lurality of blades with their Operating sur accs transversely dished, and also with the ends of the blades curved backwardly to form ianges 'which are substantially parallel with the axis of the propeller, and a conical extension on the hub of the propeller beyond theblades, said cenie-al projection having'conczwed sides.`
2. A propeller having a plurality of blades with their. opcrafting surfaces tral'isversely dished, and also with the ends of the blades ;Curved baclnvardly to form tlanges which are substzntially parallel with the axis of the propeller, the blades being' of-such shape that if the flanges and body were opened out into the same plane the back vedg-esV of the blades Would be approximately an are of a semi-circle. In testimony Whereof I have hereunto set my hand in presenceof two subseribing witnesses.
JosEPH F. BALL.
US49244009A 1909-04-27 1909-04-27 Propeller. Expired - Lifetime US933013A (en)

Priority Applications (1)

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US49244009A US933013A (en) 1909-04-27 1909-04-27 Propeller.

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US49244009A US933013A (en) 1909-04-27 1909-04-27 Propeller.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582107A (en) * 1949-06-25 1952-01-08 Guy L Dakin Propeller blade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2582107A (en) * 1949-06-25 1952-01-08 Guy L Dakin Propeller blade

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