US1807359A - Heater for propellers - Google Patents

Heater for propellers Download PDF

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Publication number
US1807359A
US1807359A US229444A US22944427A US1807359A US 1807359 A US1807359 A US 1807359A US 229444 A US229444 A US 229444A US 22944427 A US22944427 A US 22944427A US 1807359 A US1807359 A US 1807359A
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Prior art keywords
propeller
hub
propellers
heater
shaft
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Expired - Lifetime
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US229444A
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Waters William
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
    • B64D15/12—De-icing or preventing icing on exterior surfaces of aircraft by electric heating

Definitions

  • This invention relates to improvements in n; propellers especially adapted for aircraft, an object being to provide means for preventing snow, sleet and ice from collecting upon'the U propeller.
  • Another object of the invention is the provision of means for this purpose which is electrically operated, and to which current may be supplied from a generator or other 1 suitable source, so thatthe propeller may be kept at a temperature above freezing.
  • Figure 1 isan elevation of a propeller constructed in accordance with the invention, parts of the blades being broken away and the brushes shown in section.
  • Figure 2 is a fragmentary view partly in section.
  • Figure 3 is a section on the line 3-3 of Figure 1.
  • the reference character in- 30 dicates a propeller which, is mounted upon a shaft 11,'the latter being secured within the hub 12 of the propeller as indicated at 13.
  • a non-rotatable sleeve 14 w ose end abuts one face of the hub of the propeller as clearly shown in Figure 2 of the drawings.
  • the hub 14 is provided with sockets 15 which open at the outer ends of the hub and which extend parallel with the shaft 11.
  • the sockets 15 sleeve 14 and have located therein collector are radially offset with respect to one another rings 20, so that the springs 18 force the ends of the brushes 16 into contact with these rings.
  • the propeller is of metal construction and arranged within each blade of the propeller is aresistance element 21. These elements are connected by a conductor 22 which is housed Within the propeller and which extends around the shaft 11, while conductors- 23 connect the resistance elements 21 with the collector rings 20.
  • a shaft a hub fitted to the shaft and rotatable therewith, blades radiating from the hub, a sleeve in which the shaft is rotatable, one side of the hub being in engagement with the end of the sleeve, the said side of the hub being provided with annular grooves concentric to each other and to the axis of the hub, a collector ring in each of said grooves, an electrical resistance in each of said blades, a conductor bridging corresponding terminals of the resistances, conductors connecting the other ter- M minals of the resistances, each with a respective one ofthe rings, the sleeve being rovided with sockets at "opposite sides 0 its axis and each in communication at its outerend with a respective one of the grooves, contact brushes slidably mounted in the sockets, current conductors connected with the brushes, and means in the sockets yieldably holding the brushes in contact, at their outer

Description

May 26 1931. w. WATERS 1,8073% HEATER FOR PROPELLEHS -Filed 001;. 28, 1927 2 Sheets-Shest l 1 W'ilzb'mll bfargmm ATTORN EY May 26, 1931. w WATERS 1,807,359
' HEATER FOR PROPELLERS Filed Oct. 28, 1927 2 Sheets-Sheet 2 W ZZZhMWQfCrQZ INVENTOR ATTORNEY Patented May 26, 1931 WILLIAM WATERS, 013 BOSTON, MASSACHUSETTS HEATER FOR PROPELLERS Application filed October, 28, 1927. Serial No. 229,444.
This invention relates to improvements in n; propellers especially adapted for aircraft, an object being to provide means for preventing snow, sleet and ice from collecting upon'the U propeller.
Another object of the invention is the provision of means for this purpose which is electrically operated, and to which current may be supplied from a generator or other 1 suitable source, so thatthe propeller may be kept at a temperature above freezing.
\Vith the above and other objects in view, the invention further includes the following novel features and details of construction, to
15 be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claim.
In the drawings t Figure 1 isan elevation of a propeller constructed in accordance with the invention, parts of the blades being broken away and the brushes shown in section.
Figure 2 is a fragmentary view partly in section.
Figure 3 is a section on the line 3-3 of Figure 1.
Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the reference character in- 30 dicates a propeller which, is mounted upon a shaft 11,'the latter being secured within the hub 12 of the propeller as indicated at 13.
Mounted upon the pro eller shaft 11 is a non-rotatable sleeve 14 w ose end abuts one face of the hub of the propeller as clearly shown in Figure 2 of the drawings. The hub 14 is provided with sockets 15 which open at the outer ends of the hub and which extend parallel with the shaft 11. The sockets 15 sleeve 14 and have located therein collector are radially offset with respect to one another rings 20, so that the springs 18 force the ends of the brushes 16 into contact with these rings.
The propeller is of metal construction and arranged within each blade of the propeller is aresistance element 21. These elements are connected by a conductor 22 which is housed Within the propeller and which extends around the shaft 11, while conductors- 23 connect the resistance elements 21 with the collector rings 20.
It will be seen that current supplied to the brushes 16-from a suitable source will be picked up by the rings 20 and conducted to the resistance elements 21, so that the blades of the propeller will be heated to prevent accumulation of ice and sleet.
The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claim.
Having described the invention what is claimed is In a device of the class described, a shaft, a hub fitted to the shaft and rotatable therewith, blades radiating from the hub, a sleeve in which the shaft is rotatable, one side of the hub being in engagement with the end of the sleeve, the said side of the hub being provided with annular grooves concentric to each other and to the axis of the hub, a collector ring in each of said grooves, an electrical resistance in each of said blades, a conductor bridging corresponding terminals of the resistances, conductors connecting the other ter- M minals of the resistances, each with a respective one ofthe rings, the sleeve being rovided with sockets at "opposite sides 0 its axis and each in communication at its outerend with a respective one of the grooves, contact brushes slidably mounted in the sockets, current conductors connected with the brushes, and means in the sockets yieldably holding the brushes in contact, at their outer ends, with the respective connector rings.
In testimony whereof I ailix my si nature.
WILLIAM WA RS.
US229444A 1927-10-28 1927-10-28 Heater for propellers Expired - Lifetime US1807359A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540472A (en) * 1949-05-02 1951-02-06 A V Roe Canada Ltd Electrically heated blade and process of manufacture
US2628794A (en) * 1950-05-26 1953-02-17 United Aircraft Corp Propeller electrical connector system
US2638295A (en) * 1947-04-19 1953-05-12 Curtiss Wright Corp Propeller deicing mechanism
DE761932C (en) * 1943-03-18 1954-06-28 Aeg Power supply to a device for de-icing propellers by means of an electric heater
US2690890A (en) * 1949-02-25 1954-10-05 Wind Turbine Company Deicing system for airfoil structures
US2742248A (en) * 1952-02-16 1956-04-17 Curtiss Wright Corp Propeller blade de-icing
US3120274A (en) * 1960-12-01 1964-02-04 Canadair Ltd Pneumatic propeller drives
US4504191A (en) * 1982-10-29 1985-03-12 Brown David J Heated ceiling fan
US5281091A (en) * 1990-12-24 1994-01-25 Pratt & Whitney Canada Inc. Electrical anti-icer for a turbomachine
US20090310949A1 (en) * 2008-06-16 2009-12-17 Michael Andrew Collier Fan blade heating unit
US20100215350A1 (en) * 2005-11-16 2010-08-26 Veniamin Yakovlevich Veinberg Power System
US7938368B2 (en) 2008-04-07 2011-05-10 United Technologies Corporation Nosecone ice protection system for a gas turbine engine
US8049147B2 (en) 2008-03-28 2011-11-01 United Technologies Corporation Engine inlet ice protection system with power control by zone
US20220017226A1 (en) * 2017-06-27 2022-01-20 Airbus Helicopters Method of fabricating rotary equipment for a rotary wing, provided with a deicer, said rotary equipment, and a drone provided with said rotary equipment
GB2603814A (en) * 2021-02-16 2022-08-17 Ubiq Aerospace As Electrical power transmission for propeller deicing

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE761932C (en) * 1943-03-18 1954-06-28 Aeg Power supply to a device for de-icing propellers by means of an electric heater
US2638295A (en) * 1947-04-19 1953-05-12 Curtiss Wright Corp Propeller deicing mechanism
US2690890A (en) * 1949-02-25 1954-10-05 Wind Turbine Company Deicing system for airfoil structures
US2540472A (en) * 1949-05-02 1951-02-06 A V Roe Canada Ltd Electrically heated blade and process of manufacture
US2628794A (en) * 1950-05-26 1953-02-17 United Aircraft Corp Propeller electrical connector system
US2742248A (en) * 1952-02-16 1956-04-17 Curtiss Wright Corp Propeller blade de-icing
US3120274A (en) * 1960-12-01 1964-02-04 Canadair Ltd Pneumatic propeller drives
US4504191A (en) * 1982-10-29 1985-03-12 Brown David J Heated ceiling fan
US5281091A (en) * 1990-12-24 1994-01-25 Pratt & Whitney Canada Inc. Electrical anti-icer for a turbomachine
US20100215350A1 (en) * 2005-11-16 2010-08-26 Veniamin Yakovlevich Veinberg Power System
US8049147B2 (en) 2008-03-28 2011-11-01 United Technologies Corporation Engine inlet ice protection system with power control by zone
US8334486B2 (en) 2008-03-28 2012-12-18 United Technologies Corporation Engine inlet ice protection system having embedded variable watt density heaters
US7938368B2 (en) 2008-04-07 2011-05-10 United Technologies Corporation Nosecone ice protection system for a gas turbine engine
US20090310949A1 (en) * 2008-06-16 2009-12-17 Michael Andrew Collier Fan blade heating unit
US20220017226A1 (en) * 2017-06-27 2022-01-20 Airbus Helicopters Method of fabricating rotary equipment for a rotary wing, provided with a deicer, said rotary equipment, and a drone provided with said rotary equipment
US11858643B2 (en) * 2017-06-27 2024-01-02 Airbus Helicopters Method of fabricating rotary equipment for a rotary wing, provided with a deicer, said rotary equipment, and a drone provided with said rotary equipment
GB2603814A (en) * 2021-02-16 2022-08-17 Ubiq Aerospace As Electrical power transmission for propeller deicing
WO2022175208A1 (en) * 2021-02-16 2022-08-25 Ubiq Aerospace As Electrical power transmission for propeller deicing
GB2603814B (en) * 2021-02-16 2023-06-28 Ubiq Aerospace As Electrical power transmission for propeller deicing

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