GB619126A - Improvements in propellers - Google Patents

Improvements in propellers

Info

Publication number
GB619126A
GB619126A GB17015/44A GB1701544A GB619126A GB 619126 A GB619126 A GB 619126A GB 17015/44 A GB17015/44 A GB 17015/44A GB 1701544 A GB1701544 A GB 1701544A GB 619126 A GB619126 A GB 619126A
Authority
GB
United Kingdom
Prior art keywords
sleeve
sleeves
propeller
collars
thrust
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
GB17015/44A
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.)
EVEREL PROPELLER CORP
Original Assignee
EVEREL PROPELLER CORP
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 EVEREL PROPELLER CORP filed Critical EVEREL PROPELLER CORP
Publication of GB619126A publication Critical patent/GB619126A/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

Abstract

619,126. Screw propellers. EVEREL PROPELLER CORPORATION. Sept. 6, 1944, No. 17015. Convention date, Oct. 30, 1943. [Class 114] A variable-pitch aircraft propeller, especially one automatically so, is provided with means for maintaining a thrust on its ball bearings. The hub shown comprises a barrel 1 containing a transverse propeller shaft-coupling sleeve 3. Blade sleeves 9 are mounted on opposite sides of the sleeve 3, and are pivotally supported on axial sleeves 6 carried by the coupling sleeve through ball bearings which are accessible through the blade sleeves and the inner races of which are subject to the thrust of a compressible member such as a spring or a washer 32 of synthetic rubber. A second ball bearing is provided between a flange 24 on the inner end of the sleeve and a ring 27 retained by a snap ring 25 and containing an oil-sealing gasket; this bearing is thus maintained under pressure by the thrust of the element 32. The blades are held against rotation in the sleeves 9 by collars 16 clamping the slit ends of the sleeves; axial adjustment of the blades is permitted by a compressible packing ring 18; an oil-sealing plate 19 may seal the inner end of the blade. The blades are synchronized by gear sections 42 on the sleeve ends engaging a pinion 43; opposed arcuate gear sections 45 engage stops 48 to limit rotary movement of the sleeve. Balancing collars 51 at the ends of the hub carry weighted blocks 53; the propeller may be balanced about the shaft by cutting material from one of these blocks, and balanced about the hub by rotating the collars; afterwards bolting them up and in some cases securing them by screws. Specification 619,213 is referred to.
GB17015/44A 1943-10-30 1944-09-06 Improvements in propellers Expired GB619126A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US619126XA 1943-10-30 1943-10-30

Publications (1)

Publication Number Publication Date
GB619126A true GB619126A (en) 1949-03-04

Family

ID=22038947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17015/44A Expired GB619126A (en) 1943-10-30 1944-09-06 Improvements in propellers

Country Status (1)

Country Link
GB (1) GB619126A (en)

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