GB706076A - Improvements in method of forming a hollow fan blade and the apparatus to practice said method - Google Patents

Improvements in method of forming a hollow fan blade and the apparatus to practice said method

Info

Publication number
GB706076A
GB706076A GB698152A GB698152A GB706076A GB 706076 A GB706076 A GB 706076A GB 698152 A GB698152 A GB 698152A GB 698152 A GB698152 A GB 698152A GB 706076 A GB706076 A GB 706076A
Authority
GB
United Kingdom
Prior art keywords
blade
sections
pattern
spread
tip
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
GB698152A
Inventor
Winfred Norton Lurcott
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.)
L J WING Manufacturing CO
Original Assignee
L J WING Manufacturing CO
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 L J WING Manufacturing CO filed Critical L J WING Manufacturing CO
Priority to GB698152A priority Critical patent/GB706076A/en
Publication of GB706076A publication Critical patent/GB706076A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction

Abstract

706,076. Making fan blades. WING MANUFACTURING CO., L. J. Aug. 29, 1950, No. 6981/52. Divided out of 706,018. Classes 83 (1) and 83 (2) Making foundry cores; patterns.-A method of making a hollow fan blade comprises forming a pattern of the blade by means of a fixture composed of elements which correspond to the cross-section of the blade and which can be fixed in the required position, making a core and dies from the pattern and then using these to bend and shape a sheet of metal. Assuming that the blade to be formed is of uniform crosssection from the hub to the tip, a pattern 50 of the blade is formed from a number of similar sheet metal sections 14, Fig. 2, each having the shape of the required cross-section and the sections being mounted on a rod 16. The sections are correctly spread by two devices. One of these comprises a fan-like rack 40 formed of uniformly spread ribs 44 pivoted about a pin 46, Fig. 7, and the other comprises two triangular elements 54, 56 mounted in a support 52 so that they are separated by the hub to tip distance of the blade and have angles equal to the angular pitch of the blade at tip and hub. The elements are placed on the rack and the ribs 44 spread so as to contact the undersides of the elements. The surface thus formed by the tops of the ribs is used to give the required spread to the sections 14 by holding the pattern 50 on the surface by hook members 72, 74 engaging the end rib 44 and the ends of the rod 16 as shown in Fig. 1. The sections are then clamped together on the rod 16 and encased in heated wax which is spread to give an even uniform surface. The wax-encased pattern is placed in a moulding box and a material such as plaster of Paris poured in to form mould surfaces from which a core 34 and two dies such as 36 are cast If the blade is to be wider at the base than at the tip, a pattern may be built up as shown in Fig. 5 from sections 15, 17 and 19, spacers 31, a supporting rod 25 and a supporting V-shaped strip 29, the sections being relatively positioned as by using the rack 40. Specification 706,018 is referred to.
GB698152A 1950-08-29 1950-08-29 Improvements in method of forming a hollow fan blade and the apparatus to practice said method Expired GB706076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB698152A GB706076A (en) 1950-08-29 1950-08-29 Improvements in method of forming a hollow fan blade and the apparatus to practice said method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB698152A GB706076A (en) 1950-08-29 1950-08-29 Improvements in method of forming a hollow fan blade and the apparatus to practice said method

Publications (1)

Publication Number Publication Date
GB706076A true GB706076A (en) 1954-03-24

Family

ID=9824377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB698152A Expired GB706076A (en) 1950-08-29 1950-08-29 Improvements in method of forming a hollow fan blade and the apparatus to practice said method

Country Status (1)

Country Link
GB (1) GB706076A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010133354A1 (en) * 2009-05-20 2010-11-25 W & S Management Gmbh & Co. Kg Fan blade
CN110945250A (en) * 2017-08-09 2020-03-31 三菱电机株式会社 Propeller fan, air supply device, and refrigeration cycle device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010133354A1 (en) * 2009-05-20 2010-11-25 W & S Management Gmbh & Co. Kg Fan blade
AU2010251465B2 (en) * 2009-05-20 2015-03-12 W & S Management Gmbh & Co. Kg Fan blade
US9869325B2 (en) 2009-05-20 2018-01-16 W & S Management Gmbh & Co. Kg Fan blade
EP2433014B1 (en) * 2009-05-20 2019-05-01 W & S Management GmbH & Co. KG Fan blade
CN110945250A (en) * 2017-08-09 2020-03-31 三菱电机株式会社 Propeller fan, air supply device, and refrigeration cycle device

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