GB308822A - Improvements in chimney and ventilator shaft tops - Google Patents

Improvements in chimney and ventilator shaft tops

Info

Publication number
GB308822A
GB308822A GB9958/29A GB995829A GB308822A GB 308822 A GB308822 A GB 308822A GB 9958/29 A GB9958/29 A GB 9958/29A GB 995829 A GB995829 A GB 995829A GB 308822 A GB308822 A GB 308822A
Authority
GB
United Kingdom
Prior art keywords
shaft
chimney
cancelled
ventilating
fitted
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
GB9958/29A
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
Publication of GB308822A publication Critical patent/GB308822A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

308,822. Lejay, R. March 30, 1928, [Convention date]. Chimney and ventilating-shaft tops.-The external wall of an open-ended chimney or ventilating-shaft top 1 is a surface of revolution which when viewed in elevation is of convex curvature increasing from the top to the bottom of the member. The member 1 is fitted at the top of the shaft 2, and at its base is provided with a series of apertures 4 separated by webs 3 by which it is fitted to the shaft 2. A skirt 1<a> may be provided if desired. The Specification as open to inspection under Sect. 91 (3) (a) states that the member 2 has " a directrix in the form of a polygonal line or closed curve, and a generating line in the form of a broken line or curve which is outwardly convex." Figs. 3 and 5 (Cancelled) illustrate a member 1 the curvature of which does not increase from top to bottom; and the member 1, Fig. 6 (Cancelled), is provided with a ring of holes 4<a> encircled by a tubular member 1<d>. This subjectmatter does not appear in the Specification as accepted.
GB9958/29A 1928-03-30 1929-03-28 Improvements in chimney and ventilator shaft tops Expired GB308822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR308822X 1928-03-30

Publications (1)

Publication Number Publication Date
GB308822A true GB308822A (en) 1930-05-22

Family

ID=8889105

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9958/29A Expired GB308822A (en) 1928-03-30 1929-03-28 Improvements in chimney and ventilator shaft tops

Country Status (1)

Country Link
GB (1) GB308822A (en)

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