GB549031A - Improved light-excluding ventilator for use in conjunction with "blackout" shutters ad/or screens - Google Patents

Improved light-excluding ventilator for use in conjunction with "blackout" shutters ad/or screens

Info

Publication number
GB549031A
GB549031A GB950041A GB950041A GB549031A GB 549031 A GB549031 A GB 549031A GB 950041 A GB950041 A GB 950041A GB 950041 A GB950041 A GB 950041A GB 549031 A GB549031 A GB 549031A
Authority
GB
United Kingdom
Prior art keywords
aperture
shutters
ventilator
shields
shutter
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
GB950041A
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 GB950041A priority Critical patent/GB549031A/en
Publication of GB549031A publication Critical patent/GB549031A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B7/00—Special arrangements or measures in connection with doors or windows
    • E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Air-Flow Control Members (AREA)

Abstract

549,031. Ventilators. HASELDINE, C. F. W. July 26, 1941, No. 9500. [Class 137] A " black-out " ventilator for use with shutters or screens comprises inner and outer trough-like shields 11, 12 between which is a passage 13 which communicates at one end with an aperture such as 14 in the shutter 10, and at the other end by an aperture 17 with the room space. In the form shown, air entering through the aperture 14 passes through an opening 19 to the passage 13, and out through the aperture 17. The ends of the shields 11, 12 are closed by supporting members of stepped formation to which they are secured. In a modification, the apertures 17, 19 instead of being continuous, may be formed by recesses or cut out portions in the marginal parts of the shields. In another modification, the inner shield 11 may abut the face of the shutter at both its ends and an opening may be provided in the shutter at 141.
GB950041A 1941-07-26 1941-07-26 Improved light-excluding ventilator for use in conjunction with "blackout" shutters ad/or screens Expired GB549031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB950041A GB549031A (en) 1941-07-26 1941-07-26 Improved light-excluding ventilator for use in conjunction with "blackout" shutters ad/or screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB950041A GB549031A (en) 1941-07-26 1941-07-26 Improved light-excluding ventilator for use in conjunction with "blackout" shutters ad/or screens

Publications (1)

Publication Number Publication Date
GB549031A true GB549031A (en) 1942-11-03

Family

ID=9873154

Family Applications (1)

Application Number Title Priority Date Filing Date
GB950041A Expired GB549031A (en) 1941-07-26 1941-07-26 Improved light-excluding ventilator for use in conjunction with "blackout" shutters ad/or screens

Country Status (1)

Country Link
GB (1) GB549031A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995308A (en) * 1989-05-24 1991-02-26 Alumax Inc. Roof ventilating apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995308A (en) * 1989-05-24 1991-02-26 Alumax Inc. Roof ventilating apparatus

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