GB201787A - Improvements in screw propellers - Google Patents

Improvements in screw propellers

Info

Publication number
GB201787A
GB201787A GB23084/22A GB2308422A GB201787A GB 201787 A GB201787 A GB 201787A GB 23084/22 A GB23084/22 A GB 23084/22A GB 2308422 A GB2308422 A GB 2308422A GB 201787 A GB201787 A GB 201787A
Authority
GB
United Kingdom
Prior art keywords
pitch
outer part
flat
face
boss
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
GB23084/22A
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.)
ROY CECIL MAKENNEY
Original Assignee
ROY CECIL MAKENNEY
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 ROY CECIL MAKENNEY filed Critical ROY CECIL MAKENNEY
Priority to GB23084/22A priority Critical patent/GB201787A/en
Publication of GB201787A publication Critical patent/GB201787A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/26—Blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/20—Hubs; Blade connections

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

201,787. Makenney, R. C. Aug. 25, 1922. Screw propellers.-Screw propeller blades with a large outer part and small inner part are constructed with inner pa.rt of 25 to 30 per cent less pitch than the outer, and with the driving face of the outer part flat and perpendicular to the boss, while the other face is convex. The inner part 10, of the blades B is narrower than the outer part 11 and is less in pitch by 25 to 30 per cent than the pitch at the base of the flat part. The outer part has a flat driving surface 13 set perpendicular to the boss A and a convex rear face, the leading and trailing edges being shaped off to a sharp cutting edge 14. The two parts merge into each other at a position about ¢ to 2/3 of the propeller diameter.
GB23084/22A 1922-08-25 1922-08-25 Improvements in screw propellers Expired GB201787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23084/22A GB201787A (en) 1922-08-25 1922-08-25 Improvements in screw propellers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23084/22A GB201787A (en) 1922-08-25 1922-08-25 Improvements in screw propellers

Publications (1)

Publication Number Publication Date
GB201787A true GB201787A (en) 1923-08-09

Family

ID=10189846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23084/22A Expired GB201787A (en) 1922-08-25 1922-08-25 Improvements in screw propellers

Country Status (1)

Country Link
GB (1) GB201787A (en)

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