US2474562A - Propeller - Google Patents

Propeller Download PDF

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Publication number
US2474562A
US2474562A US585657A US58565745A US2474562A US 2474562 A US2474562 A US 2474562A US 585657 A US585657 A US 585657A US 58565745 A US58565745 A US 58565745A US 2474562 A US2474562 A US 2474562A
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Prior art keywords
blade
propeller
shown
wedge
hub
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Expired - Lifetime
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US585657A
Inventor
Waterval William
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Waterval William
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Priority to US585657A priority Critical patent/US2474562A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/26Blades
    • B63B85/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63HMARINE PROPULSION OR STEERING
    • B63H1/00Propulsive elements directly acting on water
    • B63H1/02Propulsive elements directly acting on water of rotary type
    • B63H1/12Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14Propellers
    • B63H1/20Hubs; Blade connections
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C11/00Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/02Hub construction
    • B64C11/04Blade mountings
    • B64C11/08Blade mountings for non-adjustable blades
    • B64C11/10Blade mountings for non-adjustable blades rigid
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C11/00Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16Blades

Description

June 28, 1949. w, w T v 2,474,562

PROPELLER 4 Filed March .50, 1945 vE/vmz. William fer ua Z.

ATTORNEY Patented June 28, 1949 UNITED STATES PATENT OFFICE PROPELLER William Waterval, Brooklyn, N. Y. Application March 30, 1945, Serial No. 585,657

1 Claim.

This invention relates to new and useful improvements in the construction of propellers, applicable wherever propellers are to be used; and it has for its specific object to provide a propeller blade, which due to its construction will prove sturdy in operation, easily adjustable as to pitch, and which will also permit of an easy replacement of said blade in case of damage.

With the above and other objects in view, this invention consists of the novel features of construction, combination and arrangement of parts, hereinafter fully described, claimed and il-' lustrated in the accompanying drawing, forming part of this specification, and in which similar characters of reference indicate corresponding parts in all views, and in which:

Figure 1 is a front elevational view of a propeller constructed according to my invention.

Figure 2 is a top plan view of a propeller hub and blades.

Figure 3 is a transverse sectional view, taken on the line 33 of Figure 2.

Figure 4 shows a propeller blade attached to a hub, partly in section and partly in elevation.

Figure 5 shows a side elevation of the major part of a propeller blade; while Figure 5a shows in side elevation an auxiliary blade, or thrustplate, attached to the former blade.

Figure 6 is a detail view showing a wedge used in fastening the propeller blade in position; whil Figure 7 is a detail view of a locking wedge for solidly securing the relevant parts together.

Figure 8 is a view similar to Figure 4, but showing a modification in the construction of the propeller blade.

Referring more particularly to the drawing, the numeral l indicates a propeller having the hub II and blades l2, l2. The hub is formed with grooves l3, l3 of a dovetailed nature, and the blades l2 are inserted in said grooves and held in place by wedges l4 and locking members I5, whereupon said parts are welded together and to the hub proper, as shown at l6.

As shown in Figure 4, the propeller blade consists herein of a large or major blade portion H, which has its bottom portion enlarged and slantingly bent, as shown at l8 in Figure this bottom portion 3 is made to fit in one side of In the modification shown in Figure 8, a plurality of blade sections, [1, Ha, I'lb, l'lc, substantially flat and of different sizes are staggeredly and fixedly secured together in any suitable manner, such as by welding, or riveting; the said blade ll shown in Figure 8 has then. all its blade sections slantingly bent, as shown at 26 in Figure 8, so that they will snugly fit in one side of the recessed hub portion, or groove l3; the fastening operation of said blade, or blade sections, is then the same as formerly described with respect to the blade shown in Figure 4, with the exception that in the relative arrangement shown in Figure 8 an additional wedge I4 is used to fasten the blade shown in said latter figure.

It is obvious that changes may be made in the form, construction and arrangement of the several parts, as shown, within the scope of the appended claim, without departing from the spirit of the invention, and I do not, therefore, wish to limit myself to the exact construction and arrangement shown and described herein.

What I claim as new, and desired to secure by Letters Patent of the United States, is:

The combination of a propeller blade with a recessed hub portion, said propeller blade comprising a major blade having its bottom portion enlarged and slantingly bent, said hub portion being formed with grooves therein, the enlarged portion of the major blade being mounted against one side of one of said grooves, a wedge arranged against the opposite side of said groove, and a locking member disposed between the wedge and said blade, whereby to secure the latter solidly in position, said wedge, locking member and blade being welded solidly together to form a unit, a second blade, slightly bevelled to form a streamlined surface, beingwelded to the major blade,

40 said major blade and second blade being welded a groove l3, when the said blade portionll is inserted in the same. Opposite the blade portion H in the other side of the groove IS a wedge I4 is inserted, while still another wedge, or locking member I5 is inserted between said first wedge and the blade portion to keep the latter solidly in position; the said parts are then welded together, whereupon a second blade portion [9, slightly beveled, as shown in Figure 5a, is welded to the major blade portion I1, and the two blade portions, 11 and I9, subsequently welded to the hub proper, as shown especially at It in Figure 4.

to the hub portion proper, substantially as shown and described.

WILLIAM WATERVAL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,166,630 Lovekin Jan. 4, 1916 1,419,927 Hodgkinson June 20, 1922 FOREIGN PATENTS Number Country Date 343,170 Italy Sept. 16, 1936 428,999 France Sept. 12, 1911 552,692 France Jan. 26, 1923

US585657A 1945-03-30 1945-03-30 Propeller Expired - Lifetime US2474562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US585657A US2474562A (en) 1945-03-30 1945-03-30 Propeller

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Application Number Priority Date Filing Date Title
US585657A US2474562A (en) 1945-03-30 1945-03-30 Propeller

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US2474562A true US2474562A (en) 1949-06-28

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823889A (en) * 1950-04-05 1958-02-18 Stalker Dev Company Rotor construction and fabrication
EP0406451A1 (en) * 1989-01-20 1991-01-09 Kabushiki Kaisha Kobeseikosho Marine propulsion apparatus
WO2016131877A1 (en) * 2015-02-20 2016-08-25 Jouni Jokela Hub and blade for a rotor of a fluid flow machine
US9682756B1 (en) * 2016-10-17 2017-06-20 General Electric Company System for composite marine propellers
US20180105246A1 (en) * 2016-10-17 2018-04-19 General Electric Company Apparatus and system for marine propeller blade dovetail stress reduction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR428999A (en) * 1910-06-18 1911-09-12 Zephirin Ernoult Air navigation propeller
US1166630A (en) * 1915-06-22 1916-01-04 William H Prettyman Motor-vehicle heating device.
US1419927A (en) * 1918-05-24 1922-06-20 Westinghouse Electric & Mfg Co Packing
FR552692A (en) * 1922-06-09 1923-05-04 advanced propeller

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR428999A (en) * 1910-06-18 1911-09-12 Zephirin Ernoult Air navigation propeller
US1166630A (en) * 1915-06-22 1916-01-04 William H Prettyman Motor-vehicle heating device.
US1419927A (en) * 1918-05-24 1922-06-20 Westinghouse Electric & Mfg Co Packing
FR552692A (en) * 1922-06-09 1923-05-04 advanced propeller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823889A (en) * 1950-04-05 1958-02-18 Stalker Dev Company Rotor construction and fabrication
EP0406451A1 (en) * 1989-01-20 1991-01-09 Kabushiki Kaisha Kobeseikosho Marine propulsion apparatus
EP0406451A4 (en) * 1989-01-20 1991-06-12 Kabushiki Kaisha Kobeseikosho Marine propulsion apparatus
WO2016131877A1 (en) * 2015-02-20 2016-08-25 Jouni Jokela Hub and blade for a rotor of a fluid flow machine
US9682756B1 (en) * 2016-10-17 2017-06-20 General Electric Company System for composite marine propellers
US20180105246A1 (en) * 2016-10-17 2018-04-19 General Electric Company Apparatus and system for marine propeller blade dovetail stress reduction

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