US2134921A - Propeller - Google Patents

Propeller Download PDF

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Publication number
US2134921A
US2134921A US167815A US16781537A US2134921A US 2134921 A US2134921 A US 2134921A US 167815 A US167815 A US 167815A US 16781537 A US16781537 A US 16781537A US 2134921 A US2134921 A US 2134921A
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Prior art keywords
propeller
blades
hub
trailing edge
line
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Expired - Lifetime
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US167815A
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Kelleweay Theodore
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Individual
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Priority to US167815A priority Critical patent/US2134921A/en
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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
    • B63H1/14—Propellers
    • B63H1/26—Blades

Definitions

  • PROPELLER Filed Oct. '7, 1937 Inventor I Attorneys Patented Nov. 1, 1938 UNITED STATES PATENT OFFICE PROPELLER Theodore Kelleweay, Yonkers, N. Y.
  • This invention relates to new and useful improvements in propellers for turbines and various other uses.
  • the principal object of the present invention is to provide a propeller constructed in such a manner as to increase bearing surface, while at the same time diminishing resistance and eliminating churning action.
  • Another important object of the invention is to provide a propeller wherein the edge portions of the propeller blades are constructed in such a manner as to eliminate resistance and churn.
  • Figure 1 represents a rear elevational view of the propeller.
  • Figure 2 is a sectional view on line 2--2 of Figure 1.
  • Figure 3 is a side elevational view of the propeller.
  • Figure 4 is a cross-section on line 4-4 of Figure 1.
  • Figure 5 is a cross section on the line 5-5 of Figure 1.
  • numeral 5 denotes the hub having the drive shaft bore 6 therethrough.
  • the propeller is of the screw type and while shown with the blades 1-8, may have three, four, five, or more blades.
  • the blades are of arcuate shape, curving rearwardly.
  • the blades are thickened along their intermediate longitudinal portions, and gradually change from being convex on both sides at their outer ends to being flat on their inner sides and convex on their outer sides.
  • the inner ends of the blades 1-8 individually 5 extend from the hub 5 and have the spaces 9 between the same. Both blades curve in a rearward direction and each on its rearward side is provided with the dished formation I0 merging with the cut out portions II in the tail edge of the blade. 10 This dishing out and recessing of the blades serves to increase the bearing surface of the propeller, While at the same time diminishing resistance and eliminating hub vacuum and churn. Furthermore, as is suggested in Figures 4 and 5, the lead- 15 ing edges of the blades are sharp so as to readily cut through the water.
  • a propeller comprising a hub, a plurality of blades radiating from the hub, each of said blades being provided with an arcuate-shaped leading edge and a trailing edge, said trailing edge being provided with an inward extension joining the 30 hub on a line tangentially with respect thereto, each of the said blades being provided with a concavity on one side thereof adjacent the trailing edge of the blade at a point adjacent the hub and taking in that portion of the trailing edge from 35 where the lateral portion extends.

Description

NOV. 1, 1938. T KELLEWEAY 2,134,921
PROPELLER Filed Oct. '7, 1937 Inventor I Attorneys Patented Nov. 1, 1938 UNITED STATES PATENT OFFICE PROPELLER Theodore Kelleweay, Yonkers, N. Y.
Application October 7, 1937, Serial No. 167,815
1 Claim.
This invention relates to new and useful improvements in propellers for turbines and various other uses.
The principal object of the present invention is to provide a propeller constructed in such a manner as to increase bearing surface, while at the same time diminishing resistance and eliminating churning action.
Another important object of the invention is to provide a propeller wherein the edge portions of the propeller blades are constructed in such a manner as to eliminate resistance and churn.
Other important objects and advantages of the invention will become apparent to the reader of the following specification.
In the drawing:
Figure 1 represents a rear elevational view of the propeller.
Figure 2 is a sectional view on line 2--2 of Figure 1.
Figure 3 is a side elevational view of the propeller.
Figure 4 is a cross-section on line 4-4 of Figure 1.
Figure 5 is a cross section on the line 5-5 of Figure 1.
Referring to the drawing, wherein like numerals designate like parts, it can be seen that numeral 5 denotes the hub having the drive shaft bore 6 therethrough.
The propeller is of the screw type and while shown with the blades 1-8, may have three, four, five, or more blades.
As is clearly shown in Figures 4 and 5, which are cross-sectional views of the blades, the blades are of arcuate shape, curving rearwardly. The blades are thickened along their intermediate longitudinal portions, and gradually change from being convex on both sides at their outer ends to being flat on their inner sides and convex on their outer sides.
The inner ends of the blades 1-8 individually 5 extend from the hub 5 and have the spaces 9 between the same. Both blades curve in a rearward direction and each on its rearward side is provided with the dished formation I0 merging with the cut out portions II in the tail edge of the blade. 10 This dishing out and recessing of the blades serves to increase the bearing surface of the propeller, While at the same time diminishing resistance and eliminating hub vacuum and churn. Furthermore, as is suggested in Figures 4 and 5, the lead- 15 ing edges of the blades are sharp so as to readily cut through the water.
While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size, and 20 materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.
Having thus described the invention, what is claimed as new is: 25
A propeller comprising a hub, a plurality of blades radiating from the hub, each of said blades being provided with an arcuate-shaped leading edge and a trailing edge, said trailing edge being provided with an inward extension joining the 30 hub on a line tangentially with respect thereto, each of the said blades being provided with a concavity on one side thereof adjacent the trailing edge of the blade at a point adjacent the hub and taking in that portion of the trailing edge from 35 where the lateral portion extends.
THEODORE KELLEWEAY.
US167815A 1937-10-07 1937-10-07 Propeller Expired - Lifetime US2134921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US167815A US2134921A (en) 1937-10-07 1937-10-07 Propeller

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US167815A US2134921A (en) 1937-10-07 1937-10-07 Propeller

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US2134921A true US2134921A (en) 1938-11-01

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US167815A Expired - Lifetime US2134921A (en) 1937-10-07 1937-10-07 Propeller

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435236A (en) * 1943-11-23 1948-02-03 Westinghouse Electric Corp Superacoustic compressor
US2599598A (en) * 1950-01-13 1952-06-10 Wirkkala Propeller Sales Inc Propeller
US3973866A (en) * 1975-01-02 1976-08-10 Vaughan Co., Inc. Centrifugal chopping slurry pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435236A (en) * 1943-11-23 1948-02-03 Westinghouse Electric Corp Superacoustic compressor
US2599598A (en) * 1950-01-13 1952-06-10 Wirkkala Propeller Sales Inc Propeller
US3973866A (en) * 1975-01-02 1976-08-10 Vaughan Co., Inc. Centrifugal chopping slurry pump

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