GB434604A - Improvements relating to propellers or screws - Google Patents

Improvements relating to propellers or screws

Info

Publication number
GB434604A
GB434604A GB702434A GB702434A GB434604A GB 434604 A GB434604 A GB 434604A GB 702434 A GB702434 A GB 702434A GB 702434 A GB702434 A GB 702434A GB 434604 A GB434604 A GB 434604A
Authority
GB
United Kingdom
Prior art keywords
centres
rod
stop
blades
blade
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
Application number
GB702434A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB702434A priority Critical patent/GB434604A/en
Publication of GB434604A publication Critical patent/GB434604A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/30—Blade pitch-changing mechanisms
    • B64C11/32—Blade pitch-changing mechanisms mechanical
    • B64C11/34—Blade pitch-changing mechanisms mechanical automatic
    • B64C11/343—Blade pitch-changing mechanisms mechanical automatic actuated by the centrifugal force or the aerodynamic drag acting on the blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Road Repair (AREA)
  • Wind Motors (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

434,604. Screw propellers. JONES, W. H., 15, Peny-Fal Road, Abergavenny, Monmouthshire. March 5,1934, No. 7024. [Class 114] An automatically variable pitch screw propeller has the blades mounted on an axis inclined forwardly and the centres of pressure and centres of gravity of each blade are displaced from the longitudinal axis of the blade toward the trailing edge. Blades 1 are mounted in sockets 4 on the boss so that they have an inclination forwardly and under the disposition of the centres of gravity and centres of pressure aft of that axis, the blades take up automatically a given pitch position. The maximum pitch position is limited by a stop constituted by a member 10 against which abuts the ball end 9 of an arm 7 secured to a sleeve 15 on the blade root. This abutment or stop is held by a light spring 12, but the rod 11 carrying the stop may be adjusted manually. For this purpose a second rod 13 is provided, and between it and the rod 11 are a number of balls 14, so that the second rod need not partake of the rotary motion of the propeller.
GB702434A 1934-03-05 1934-03-05 Improvements relating to propellers or screws Expired GB434604A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB702434A GB434604A (en) 1934-03-05 1934-03-05 Improvements relating to propellers or screws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB702434A GB434604A (en) 1934-03-05 1934-03-05 Improvements relating to propellers or screws

Publications (1)

Publication Number Publication Date
GB434604A true GB434604A (en) 1935-09-05

Family

ID=9825190

Family Applications (1)

Application Number Title Priority Date Filing Date
GB702434A Expired GB434604A (en) 1934-03-05 1934-03-05 Improvements relating to propellers or screws

Country Status (1)

Country Link
GB (1) GB434604A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482261A (en) * 1967-12-13 1969-12-02 Anthony V Sorrentino Manually variable pitch propeller
US3497306A (en) * 1968-07-11 1970-02-24 Adrian Phillips Automatic variable pitch propeller
US4047841A (en) * 1974-11-15 1977-09-13 Ab Jarnforadling Propeller blading for a self-adjusting propeller for boats
US4179241A (en) * 1977-10-31 1979-12-18 High Harbin Full feathering, reversible pitch, constant RPM propeller
US4316698A (en) * 1979-08-23 1982-02-23 Bertoia Val O Fluid-driven turbine with speed regulation
US4439108A (en) * 1982-06-08 1984-03-27 Richard Will Windmill having centrifically feathered rotors to control rotor speed
CN109278985A (en) * 2018-11-20 2019-01-29 西安君晖航空科技有限公司 A kind of variable propeller pitch device and its installation method
CN113492966A (en) * 2020-03-19 2021-10-12 拉季埃-菲雅克有限责任公司 Propeller blade arrangement

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3482261A (en) * 1967-12-13 1969-12-02 Anthony V Sorrentino Manually variable pitch propeller
US3497306A (en) * 1968-07-11 1970-02-24 Adrian Phillips Automatic variable pitch propeller
US4047841A (en) * 1974-11-15 1977-09-13 Ab Jarnforadling Propeller blading for a self-adjusting propeller for boats
US4179241A (en) * 1977-10-31 1979-12-18 High Harbin Full feathering, reversible pitch, constant RPM propeller
US4316698A (en) * 1979-08-23 1982-02-23 Bertoia Val O Fluid-driven turbine with speed regulation
US4439108A (en) * 1982-06-08 1984-03-27 Richard Will Windmill having centrifically feathered rotors to control rotor speed
CN109278985A (en) * 2018-11-20 2019-01-29 西安君晖航空科技有限公司 A kind of variable propeller pitch device and its installation method
CN109278985B (en) * 2018-11-20 2023-09-29 西安君晖航空科技有限公司 Pitch variable device and installation method thereof
CN113492966A (en) * 2020-03-19 2021-10-12 拉季埃-菲雅克有限责任公司 Propeller blade arrangement
US11577820B2 (en) * 2020-03-19 2023-02-14 Ratier-Figeac Sas Propeller blade arrangement

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