GB299923A - Improvements in and connected with screw propellers and the like - Google Patents

Improvements in and connected with screw propellers and the like

Info

Publication number
GB299923A
GB299923A GB20885/27A GB2088527A GB299923A GB 299923 A GB299923 A GB 299923A GB 20885/27 A GB20885/27 A GB 20885/27A GB 2088527 A GB2088527 A GB 2088527A GB 299923 A GB299923 A GB 299923A
Authority
GB
United Kingdom
Prior art keywords
blade
bath
anode
grid
propeller
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
GB20885/27A
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.)
Stone J and Co Ltd
J Stone and Co Ltd
Original Assignee
Stone J and Co Ltd
J Stone and Co Ltd
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 Stone J and Co Ltd, J Stone and Co Ltd filed Critical Stone J and Co Ltd
Priority to GB20885/27A priority Critical patent/GB299923A/en
Publication of GB299923A publication Critical patent/GB299923A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D7/00—Electroplating characterised by the article coated
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

299,923. Stone & Co., Ltd., J., Pike, F. J., and Neville, H. Aug. 8, 1927. Screw propellers.-A screw propeller or blade is electrolytically coated with metallic chromium. When a lead anode is employed its area is half that of the cathode surface of the propeller. For coating the propeller a local bath is formed around it and made fluid - tight. When coating one blade at a time the blade a<1> is fitted into a bath formed of flexible sheet metal c which is bent to fit closely aiound the blade and forms a side wall of a bath, the bottom of which is constituted by the face of the blade to be coated. The sheet c is held by a frame member of wood, two long portions d and cross portion e being bolted together, wood packing pieces g, g<1> being disposed at the edges. The anode is comprised of a grid formed of a flat lead strip or interlaced rods, the ends of the rods being connected to suitable set screws, the total area of this grid being half that of the blade. The electrolyte is introduced into the bath to submerge the blade, chromium acid or a suitable chromium salt solution being employed. Pickling, washing or other treatment may be carried out in the local bath and cooling of the bath may be provided to prevent over-heating. Other metals such as steel may be used in place of lead for the anode grid.
GB20885/27A 1927-08-08 1927-08-08 Improvements in and connected with screw propellers and the like Expired GB299923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB20885/27A GB299923A (en) 1927-08-08 1927-08-08 Improvements in and connected with screw propellers and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20885/27A GB299923A (en) 1927-08-08 1927-08-08 Improvements in and connected with screw propellers and the like

Publications (1)

Publication Number Publication Date
GB299923A true GB299923A (en) 1928-11-08

Family

ID=10153395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20885/27A Expired GB299923A (en) 1927-08-08 1927-08-08 Improvements in and connected with screw propellers and the like

Country Status (1)

Country Link
GB (1) GB299923A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589488A1 (en) * 1985-11-06 1987-05-07 Hughes Tool Co METHOD AND DEVICE FOR ELECTRODEPOSITION OF HARD METAL ON STEEL SURFACES
EP0950128A1 (en) * 1996-08-22 1999-10-20 Ronald Kempin Prevention of marine encrustation on bronze propellers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589488A1 (en) * 1985-11-06 1987-05-07 Hughes Tool Co METHOD AND DEVICE FOR ELECTRODEPOSITION OF HARD METAL ON STEEL SURFACES
EP0950128A1 (en) * 1996-08-22 1999-10-20 Ronald Kempin Prevention of marine encrustation on bronze propellers
EP0950128A4 (en) * 1996-08-22 2001-11-14 Propeller Antifouling Pty Ltd Prevention of marine encrustation on bronze propellers

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