US123274A - Improvement in propellers - Google Patents
Improvement in propellers Download PDFInfo
- Publication number
- US123274A US123274A US123274DA US123274A US 123274 A US123274 A US 123274A US 123274D A US123274D A US 123274DA US 123274 A US123274 A US 123274A
- Authority
- US
- United States
- Prior art keywords
- blades
- hub
- propellers
- improvement
- flanges
- 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
- 210000000614 Ribs Anatomy 0.000 description 10
- 210000000088 Lip Anatomy 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 238000003780 insertion Methods 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
- F04D29/34—Blade mountings
Definitions
- My invention relates to propellers in which the blades are secured separately to the hub; and consists in the peculiar manner of securing the blades, too fully described hereafter to need preliminary explanation, whereby the removal of any one or more damaged blades and the insertion of new ones may be readily efl'ected.
- Figure 1 is a front view, partly in section, of my improved propeller; Fig. 2, a plan View; Fig. 3, a transverse section of the hub or vane of the propeller drawn to an enlarged scale; and Fig. 4, a perspective view illustrating the detailed construction of my invention.
- The-blades A A of the propeller may be of any shape or pitch which circumstances may suggest, but they are secured to the hub in the peculiar manner which I will now proceed to describe.
- B is the hub secured to the propeller-shaft D, and this hub has an enlarged central portion, a, and at the opposite ends of the latter portions 1) 1) reduced in diameter.
- In the enlarged portion aof the hub are cut as many dovetailed grooves (1 as there are blades, four in the present instance, and into each groove fits the dovetailed rib e of the flange E of one of the blades. These flanges E are such that when all the blades are adjusted.
- a collar, G is fitted to each reduced portion 1) of the hub, and each collar abuts against a shoulder, y, formed on the hub where the enlarged portion ofthe same meets the reduced portion, the collar also bearing against the ends of the flanges of the blades, and having an annular lip, h, which overlaps the recessed ends .00 of the said flanges.
- Each collar is confined to the shaft D, in the present instance, by a transverse pin, it; but it should be understood that I do not desire to restrict myself to this precise mode of securing the collars to the shaft.
- the annular lips h' of the ,collars aid the dovetailed ribs 6 in resisting all tendency of the blades to be detached in a radial direction from the hub, while the proper transverse position of the blade is insured by the collars G G, as shown in Fig. 3.
- the dovetailed ribs alone, as the flanges of the blades are fitted snugly to the hub and are confined thereto by the collars.
- the dovetailed ribs are consequently relieved to a great extent from strains imparted by the tendency of the blades to turn.
- the blades are, in fact, as much a part of the hub as if cast with the same, and yet any one or more of the blades can be removed and replaced with new ones, and thus the main object of my invention is attained, all that is necessary prior to the removal of any one or more of the blades being the withdrawal of one or both of the collars G G, so as to permit the sliding out of the blade from the hub.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
G. L. McCAY. Improvement in Propellers.
Patented .Ian. 30, 1872} GEORGE L. MCOAY, OF LINWOOD STATION, PENNSYLVANIA.
IMPROVEMENT IN PROPELLERS.
Specification forming part of Letters Patent No. 123,274, dated January 30, 1872.
Specification describing an Improvement in Propellers, invented by GEORGE L. MOGAY, of Linwood Station, Delaware county, Pennsylvania.
Improvement in Propellers.
My invention relates to propellers in which the blades are secured separately to the hub; and consists in the peculiar manner of securing the blades, too fully described hereafter to need preliminary explanation, whereby the removal of any one or more damaged blades and the insertion of new ones may be readily efl'ected.
Figure 1 is a front view, partly in section, of my improved propeller; Fig. 2, a plan View; Fig. 3, a transverse section of the hub or vane of the propeller drawn to an enlarged scale; and Fig. 4, a perspective view illustrating the detailed construction of my invention.
The-blades A A of the propeller may be of any shape or pitch which circumstances may suggest, but they are secured to the hub in the peculiar manner which I will now proceed to describe. B is the hub secured to the propeller-shaft D, and this hub has an enlarged central portion, a, and at the opposite ends of the latter portions 1) 1) reduced in diameter. In the enlarged portion aof the hub are cut as many dovetailed grooves (1 as there are blades, four in the present instance, and into each groove fits the dovetailed rib e of the flange E of one of the blades. These flanges E are such that when all the blades are adjusted. to their places on the hub the said flanges will fit snugly to and completely incase the enlarged portion a of the hub, the flanges of one blade touching or nearly touching that of the adjoining blade, as seen in Fig. 1. A collar, G, is fitted to each reduced portion 1) of the hub, and each collar abuts against a shoulder, y, formed on the hub where the enlarged portion ofthe same meets the reduced portion, the collar also bearing against the ends of the flanges of the blades, and having an annular lip, h, which overlaps the recessed ends .00 of the said flanges. Each collar is confined to the shaft D, in the present instance, by a transverse pin, it; but it should be understood that I do not desire to restrict myself to this precise mode of securing the collars to the shaft.
It will be seen that the annular lips h' of the ,collars aid the dovetailed ribs 6 in resisting all tendency of the blades to be detached in a radial direction from the hub, while the proper transverse position of the blade is insured by the collars G G, as shown in Fig. 3. As regards the resistance of any tendency of the blades to twist on the hub, reliance is not placed on the dovetailed ribs alone, as the flanges of the blades are fitted snugly to the hub and are confined thereto by the collars. The dovetailed ribs are consequently relieved to a great extent from strains imparted by the tendency of the blades to turn. The blades are, in fact, as much a part of the hub as if cast with the same, and yet any one or more of the blades can be removed and replaced with new ones, and thus the main object of my invention is attained, all that is necessary prior to the removal of any one or more of the blades being the withdrawal of one or both of the collars G G, so as to permit the sliding out of the blade from the hub.
I claim as my inVention- The combination, substantially as described, of the flanges E and dovetailed ribs 0 of the blades with the grooved hub and its detachable collars G G, having annular lips h adapted to the flanges of the blades, as set forth.
In testimony whereofI have signed my name to this specification in the presence of two sub scribing witnesses.
Witnesses GEORGE L. MGGAY.
ALFRED L. GRISWOLD, JOHN B. MCGAY, Jr.
Publications (1)
Publication Number | Publication Date |
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US123274A true US123274A (en) | 1872-01-30 |
Family
ID=2192710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US123274D Expired - Lifetime US123274A (en) | Improvement in propellers |
Country Status (1)
Country | Link |
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US (1) | US123274A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2535527A (en) * | 1946-08-15 | 1950-12-26 | Archiebald S Barkley | Model airplane propeller |
US2542251A (en) * | 1947-07-25 | 1951-02-20 | Airmaster Corp | Method of making fans |
US3764228A (en) * | 1971-10-04 | 1973-10-09 | F Shook | Replaceable blade propeller assembly |
US3876331A (en) * | 1972-11-22 | 1975-04-08 | Robert Denherder | Removable propeller blade assembly |
US4930987A (en) * | 1989-05-24 | 1990-06-05 | Brad Stahl | Marine propeller and hub assembly of plastic |
US5180286A (en) * | 1990-09-25 | 1993-01-19 | Dean Peter E | Propeller assembly |
US6176680B1 (en) * | 1998-06-22 | 2001-01-23 | Itt Manufacturing Enterprises, Inc. | Impeller having a hub assembled from a plurality of identical parts |
US20100189563A1 (en) * | 2009-01-27 | 2010-07-29 | Gonzalez Abal Pablo Alfonso | Propeller for vessels |
WO2010086463A1 (en) * | 2009-01-27 | 2010-08-05 | Pablo Alfonso Gonzalez Abal | Boat propeller |
EP2484583A1 (en) * | 2009-09-30 | 2012-08-08 | Pablo Alfonso Gonzalez Abal | Boat propulsion device |
US20120308397A1 (en) * | 2011-06-01 | 2012-12-06 | Alstom Hydro France | Propeller for a hydraulic machine, hydraulic machine equipped with such a propeller, and a method for assembling such a propeller |
WO2017108255A1 (en) * | 2015-12-23 | 2017-06-29 | Siemens Aktiengesellschaft | Propeller for a ship |
EP3213811A3 (en) * | 2016-03-01 | 2018-01-17 | Sulzer Management AG | Vane for an impeller of an agitator, impeller and agitator |
US20180105246A1 (en) * | 2016-10-17 | 2018-04-19 | General Electric Company | Apparatus and system for marine propeller blade dovetail stress reduction |
US20180105242A1 (en) * | 2016-10-17 | 2018-04-19 | General Electric Company | Method and system for improving flow characteristics in marine propellers |
US20180105243A1 (en) * | 2016-10-17 | 2018-04-19 | General Electric Company | Apparatus and system for propeller blade forward retention |
US20180105240A1 (en) * | 2016-10-17 | 2018-04-19 | General Electric Company | Wound dovetail wedge for marine propeller retention |
USD864837S1 (en) * | 2018-08-22 | 2019-10-29 | North American Aerospace Corporation | Elliptical propeller |
-
0
- US US123274D patent/US123274A/en not_active Expired - Lifetime
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2535527A (en) * | 1946-08-15 | 1950-12-26 | Archiebald S Barkley | Model airplane propeller |
US2542251A (en) * | 1947-07-25 | 1951-02-20 | Airmaster Corp | Method of making fans |
US3764228A (en) * | 1971-10-04 | 1973-10-09 | F Shook | Replaceable blade propeller assembly |
US3876331A (en) * | 1972-11-22 | 1975-04-08 | Robert Denherder | Removable propeller blade assembly |
US4930987A (en) * | 1989-05-24 | 1990-06-05 | Brad Stahl | Marine propeller and hub assembly of plastic |
US5180286A (en) * | 1990-09-25 | 1993-01-19 | Dean Peter E | Propeller assembly |
US6176680B1 (en) * | 1998-06-22 | 2001-01-23 | Itt Manufacturing Enterprises, Inc. | Impeller having a hub assembled from a plurality of identical parts |
US20100189563A1 (en) * | 2009-01-27 | 2010-07-29 | Gonzalez Abal Pablo Alfonso | Propeller for vessels |
WO2010086463A1 (en) * | 2009-01-27 | 2010-08-05 | Pablo Alfonso Gonzalez Abal | Boat propeller |
EP2484583A4 (en) * | 2009-09-30 | 2013-03-13 | Abal Pablo Alfonso Gonzalez | Boat propulsion device |
EP2484583A1 (en) * | 2009-09-30 | 2012-08-08 | Pablo Alfonso Gonzalez Abal | Boat propulsion device |
US9291145B2 (en) * | 2011-06-01 | 2016-03-22 | Alstom Renewable Technologies | Propeller for a hydraulic machine, hydraulic machine equipped with such a propeller, and a method for assembling such a propeller |
US20120308397A1 (en) * | 2011-06-01 | 2012-12-06 | Alstom Hydro France | Propeller for a hydraulic machine, hydraulic machine equipped with such a propeller, and a method for assembling such a propeller |
WO2017108255A1 (en) * | 2015-12-23 | 2017-06-29 | Siemens Aktiengesellschaft | Propeller for a ship |
EP3213811A3 (en) * | 2016-03-01 | 2018-01-17 | Sulzer Management AG | Vane for an impeller of an agitator, impeller and agitator |
US11642637B2 (en) | 2016-03-01 | 2023-05-09 | Sulzer Management Ag | Vane for an impeller of an agitator, impeller and agitator |
US10835879B2 (en) | 2016-03-01 | 2020-11-17 | Sulzer Management Ag | Vane for an impeller of an agitator, impeller and agitator |
US20180105240A1 (en) * | 2016-10-17 | 2018-04-19 | General Electric Company | Wound dovetail wedge for marine propeller retention |
US20180105243A1 (en) * | 2016-10-17 | 2018-04-19 | General Electric Company | Apparatus and system for propeller blade forward retention |
US10633067B2 (en) * | 2016-10-17 | 2020-04-28 | General Electric Company | Method and system for improving flow characteristics in marine propellers |
US10689073B2 (en) * | 2016-10-17 | 2020-06-23 | General Electric Company | Apparatus and system for marine propeller blade dovetail stress reduction |
US20180105242A1 (en) * | 2016-10-17 | 2018-04-19 | General Electric Company | Method and system for improving flow characteristics in marine propellers |
US20180105246A1 (en) * | 2016-10-17 | 2018-04-19 | General Electric Company | Apparatus and system for marine propeller blade dovetail stress reduction |
USD864837S1 (en) * | 2018-08-22 | 2019-10-29 | North American Aerospace Corporation | Elliptical propeller |
USD1005208S1 (en) | 2018-08-22 | 2023-11-21 | North American Aerospace Corporation | Elliptical propeller |
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