GB678032A - Improvements in extractor ventilators - Google Patents

Improvements in extractor ventilators

Info

Publication number
GB678032A
GB678032A GB639450A GB639450A GB678032A GB 678032 A GB678032 A GB 678032A GB 639450 A GB639450 A GB 639450A GB 639450 A GB639450 A GB 639450A GB 678032 A GB678032 A GB 678032A
Authority
GB
United Kingdom
Prior art keywords
flange
wall
ventilator
plate
march
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
GB639450A
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.)
GREENWOOD S AND AIRVAC VENTILA
Original Assignee
GREENWOOD S AND AIRVAC VENTILA
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 GREENWOOD S AND AIRVAC VENTILA filed Critical GREENWOOD S AND AIRVAC VENTILA
Priority to GB639450A priority Critical patent/GB678032A/en
Publication of GB678032A publication Critical patent/GB678032A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/02—Roof ventilation

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

678,032. Ventilators. GREENWOOD'S & AIRVAC VENTILATING CO., Ltd., HUGHES, B. D., and FORD, E. L. March 14, 1951 [March 14, 1950], No. 6394/50. Class 137. An extractor ventilator for a roof consists of a base plate 1 having a central aperture 2 about which is formed a flange 3 having an outwardly flared upper edge 4. Spaced apart from flange 3 is an inwardly inclined outer wall 5. An inner depending wall 7 is spaced about midway between the flange 3 and the wall 5, a gap being left between plate 1 and the lower edge of plate 7, this lower edge being outwardly flared at 11 and also provided with an inwardly directed flange 12. The upper edge of the wall 7 is provided with a flange 8 upon which is secured a metal cover or glass pane 9 which may be mounted so that it can be hinged upwards. In operation, the flow A of outside air past the ventilator causes air to be drawn up through it, as shown in Fig. 9. Rain is prevented from entering the aperture 2 by the deflecting flanges 4, 11 and 12, any water collecting in the ventilator draining through holes 14. In a modification, Fig. 18 (not shown), the air flow through the ventilator is controlled by cord-operated, hinged flaps which close or open the gap between the flange 4 and the wall 7.
GB639450A 1950-03-14 1950-03-14 Improvements in extractor ventilators Expired GB678032A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB639450A GB678032A (en) 1950-03-14 1950-03-14 Improvements in extractor ventilators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB639450A GB678032A (en) 1950-03-14 1950-03-14 Improvements in extractor ventilators

Publications (1)

Publication Number Publication Date
GB678032A true GB678032A (en) 1952-08-27

Family

ID=9813719

Family Applications (1)

Application Number Title Priority Date Filing Date
GB639450A Expired GB678032A (en) 1950-03-14 1950-03-14 Improvements in extractor ventilators

Country Status (1)

Country Link
GB (1) GB678032A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2645452A1 (en) * 1976-10-08 1978-04-13 Gal International Ges Fuer Ang Roof ventilation system for large halls - uses double ventilator on either side of roof aperture
EP0066838A2 (en) * 1981-06-10 1982-12-15 Paolo Fioratti Extractor ventilator for industrial buildings
GB2163544A (en) * 1984-07-30 1986-02-26 Ventana Ltd Air extracting ventilators

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2645452A1 (en) * 1976-10-08 1978-04-13 Gal International Ges Fuer Ang Roof ventilation system for large halls - uses double ventilator on either side of roof aperture
EP0066838A2 (en) * 1981-06-10 1982-12-15 Paolo Fioratti Extractor ventilator for industrial buildings
EP0066838A3 (en) * 1981-06-10 1984-03-28 Paolo Fioratti Extractor ventilator for industrial buildings
US4621569A (en) * 1981-06-10 1986-11-11 Paolo Fioratti Extractor ventilator for industrial buildings
GB2163544A (en) * 1984-07-30 1986-02-26 Ventana Ltd Air extracting ventilators

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