GB639871A - Improvements in aircraft propellers - Google Patents

Improvements in aircraft propellers

Info

Publication number
GB639871A
GB639871A GB26029/47A GB2602947A GB639871A GB 639871 A GB639871 A GB 639871A GB 26029/47 A GB26029/47 A GB 26029/47A GB 2602947 A GB2602947 A GB 2602947A GB 639871 A GB639871 A GB 639871A
Authority
GB
United Kingdom
Prior art keywords
sleeves
sleeve
bearings
hub
pitch
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
GB26029/47A
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 GB639871A publication Critical patent/GB639871A/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
    • B64C11/02—Hub construction
    • B64C11/04—Blade mountings
    • B64C11/06—Blade mountings for variable-pitch blades

Abstract

639,871. Variable-pitch propellers. EVEREL PROPELLER CORPORATION. Sept. 25, 1947, No. 26029. Convention date, Sept. 17, 1946. [Class 114] [Also in Group XXVI] A variable-pitch propeller hub comprises a casing 2 having sleeves 7 to receive the shanks of the blades, mounted in thrust bearings 191 therein. The bearings 19<SP>1</SP> are pre-loaded by means of telescopic sleeves 34, 36 having shoulders thereon engaging bearings 32a, 32b mounted within the sleeves 7. The sleeves 34, 36 are screw-threaded and are adjusted by means of tools fitting into slots in the end face of the sleeve 34 and splines 39 in the sleeve 36. A bolt 40 engaging the slots and the splines 39 locks the sleeves 34, 36 in the required position. Pitch changing movement of the sleeves 7 is synchronized by means of links 48 secured at one end to a pin 47 on the sleeve 7 and at the other end to a gudgeon pin of a guide piston operating,in a radial cylinder 51, the cylinder head 52 of which forms a limit stop. A limit stop in the opposite direction is provided by a flange 57 on a central guide 56 in the hub 2, in which the sleeve 34 is freely guided. Balance weights 62 may be placed at either end of the hub 2 and others on the sleeves 7 (see also Fig. 3, not shown). Reference has been directed by the Comptroller to Specification 629,606.
GB26029/47A 1946-09-17 1947-09-25 Improvements in aircraft propellers Expired GB639871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US639871XA 1946-09-17 1946-09-17

Publications (1)

Publication Number Publication Date
GB639871A true GB639871A (en) 1950-07-05

Family

ID=22052789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26029/47A Expired GB639871A (en) 1946-09-17 1947-09-25 Improvements in aircraft propellers

Country Status (1)

Country Link
GB (1) GB639871A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143597A (en) * 1983-07-18 1985-02-13 Shamban & Co W S Limited slip seal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143597A (en) * 1983-07-18 1985-02-13 Shamban & Co W S Limited slip seal

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