GB139028A - Improvements in propellers - Google Patents

Improvements in propellers

Info

Publication number
GB139028A
GB139028A GB675019A GB675019A GB139028A GB 139028 A GB139028 A GB 139028A GB 675019 A GB675019 A GB 675019A GB 675019 A GB675019 A GB 675019A GB 139028 A GB139028 A GB 139028A
Authority
GB
United Kingdom
Prior art keywords
blades
boss
rim
parts
propellers
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
GB675019A
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.)
GEOFFREY MAURICE PRENDERGAST
Original Assignee
GEOFFREY MAURICE PRENDERGAST
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 GEOFFREY MAURICE PRENDERGAST filed Critical GEOFFREY MAURICE PRENDERGAST
Priority to GB675019A priority Critical patent/GB139028A/en
Publication of GB139028A publication Critical patent/GB139028A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C11/00Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/006Paddle wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

139,028. Prendergast, R. S., and Prendergast, G. M. March 18, 1919. Screw propellers. - In propellers with thin narrow blades attached to an outer rim, the blades have a forward bend and are of aerofoil section, and the rim is preferably of streamline section, and formed in parts clipped together. The rocts of the blades are not in one plane in the boss. The boss may be replaced by a second inner rim supported from the shaft by spokes. The boss a is formed in two parts supported by arms and has slots at b<1> into which the inner ends of the blades b enter, these slots being staggered and partly on one half and partly on the other half of the boss. The blades are held in position by the means holding the halves of the boss, or each blade may have a screwed end and nut attachment. The angle of incidence of the blades decreases from root to tip, and the steel blades are bent forwardly and attached at b<2> to an outer rim c which may be of duralumin. Various forms of attachment are described, according as the rim is made in two parts or hollow. An extension casing g may be provided.
GB675019A 1919-03-18 1919-03-18 Improvements in propellers Expired GB139028A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB675019A GB139028A (en) 1919-03-18 1919-03-18 Improvements in propellers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB675019A GB139028A (en) 1919-03-18 1919-03-18 Improvements in propellers

Publications (1)

Publication Number Publication Date
GB139028A true GB139028A (en) 1920-02-26

Family

ID=9820090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB675019A Expired GB139028A (en) 1919-03-18 1919-03-18 Improvements in propellers

Country Status (1)

Country Link
GB (1) GB139028A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419052A (en) * 1980-02-07 1983-12-06 Rockwell International Corporation Turbine meter rotor
US5730583A (en) * 1994-09-29 1998-03-24 Valeo Thermique Moteur Axial flow fan blade structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419052A (en) * 1980-02-07 1983-12-06 Rockwell International Corporation Turbine meter rotor
US5730583A (en) * 1994-09-29 1998-03-24 Valeo Thermique Moteur Axial flow fan blade structure

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