GB356691A - Improvements in and relating to the blades of fans or ventilators - Google Patents

Improvements in and relating to the blades of fans or ventilators

Info

Publication number
GB356691A
GB356691A GB766330A GB766330A GB356691A GB 356691 A GB356691 A GB 356691A GB 766330 A GB766330 A GB 766330A GB 766330 A GB766330 A GB 766330A GB 356691 A GB356691 A GB 356691A
Authority
GB
United Kingdom
Prior art keywords
moulds
blades
fans
pattern
divided
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
GB766330A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB766330A priority Critical patent/GB356691A/en
Publication of GB356691A publication Critical patent/GB356691A/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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

356,691. Casting. ADAMCIKAS, M. and MASSERA, G., Astor House, Aldwych, London. March 8, 1930, No. 7663. Addition to 312,748, [Class 110 (i), Centrifugal and screw fans &c.]. [Class 83 (i).] Moulds; patterns.-Fans of the type described in the parent Specification, having overlapping blades which increase in width and geometric pitch towards the hub, are made by casting ; four or more moulds divided into sections at right-angles to the rotor axis are used. When four moulds a .. d are used, as shown in Fig. 2, the pattern f is split into two parts by a division at right-angles to the axis, and portions g, h of the blades form part of the divided pattern. Portions of the blades overlap and the sand in each mould is indicated by the letters a<1> .. d<1>. When six or eight moulds are used the pattern is divided into three or four parts.
GB766330A 1930-03-08 1930-03-08 Improvements in and relating to the blades of fans or ventilators Expired GB356691A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB766330A GB356691A (en) 1930-03-08 1930-03-08 Improvements in and relating to the blades of fans or ventilators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB766330A GB356691A (en) 1930-03-08 1930-03-08 Improvements in and relating to the blades of fans or ventilators

Publications (1)

Publication Number Publication Date
GB356691A true GB356691A (en) 1931-09-08

Family

ID=9837413

Family Applications (1)

Application Number Title Priority Date Filing Date
GB766330A Expired GB356691A (en) 1930-03-08 1930-03-08 Improvements in and relating to the blades of fans or ventilators

Country Status (1)

Country Link
GB (1) GB356691A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4971520A (en) * 1989-08-11 1990-11-20 Airflow Research And Manufacturing Corporation High efficiency fan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4971520A (en) * 1989-08-11 1990-11-20 Airflow Research And Manufacturing Corporation High efficiency fan

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