US117129A - Improvement in chimney-cowls - Google Patents

Improvement in chimney-cowls Download PDF

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Publication number
US117129A
US117129A US117129DA US117129A US 117129 A US117129 A US 117129A US 117129D A US117129D A US 117129DA US 117129 A US117129 A US 117129A
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United States
Prior art keywords
cone
semi
shield
improvement
cowls
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Expired - Lifetime
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING 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
    • F23L17/00Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02Tops for chimneys or ventilating shafts; Terminals for flues

Description

UNITEn STATES PATENT OEEroE.

OF SAME PLAGE.

IMPROVEMENT IN CHIMNEV-COWLS.

Specification forming part of Letters Patent No. 117,129, dated July 18, 1871.

` in the county of Suifoll; and State of Massachusetts, have invented a new and useful Improvement on Ventilators; and I do hereby declare that the following is a full and exact description, reference being had to the drawing making part of this specification.

Figure 1 is a perspective view. Fig. 2 is a horizontal, and Fig. 3 a perpendicular section of my invention, which consists of a flue-pipe, A, corrugated shield B, and semi-cone O, D D being braces or wings used to support and connect B and C with A. Any other mode of securing B and O in the proper place in relation to fluepipe A will answer the same purpose. The distance between iiue-pipeA and semi-cone() should be about three-quarters of the diameter of fluepipe A. The larger diameter of the semi-cone O must overlap flue-pipe A one inch, so that water may drip clear of flue pipe A. The smaller diameter of semi-cone C should be one-half the diameter of flue-pipe A, and the semi-cone may be plain or an uneven surface on the edges. A cone forms a cheek to the draught, whereas the semi-cone affords relief, and at the same time forms a perfect shield against the weather when set down within the outer shield, as shown ,in Figs. l and 3. The diameter of corrugated shield B should be sufficient for the area between shield B and semi-cone C to be as great as the area of the diameter of iiue-pipe A. The effect of the corrugations on shield B is to cause the wind to rebound from the surface, helping to cause a vacuum within the shield, thereby producing a draught, the result attained being a free and unimpeded outlet and the greatest possible protection against wind and weather.

What I claim as new, and wish to secure by Letters Patent, :ls-

l. The corrugated shield B, as and for the purpose specified. g

2. The combination of the flue-pipe A, corrugated shield B, and semi-cone G, as and for the purpose specied.

3. In combination with the flue-pipe A, the semi-cone O, when arranged and combined in the manner and for the purpose as specified.

JOHN WALKER.

Witnesses:

CHARLES BRENNAN, E. M. PUTNAM.

US117129D Improvement in chimney-cowls Expired - Lifetime US117129A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080221553A1 (en) * 2007-03-07 2008-09-11 Collins Kenneth A System and method for rapidly cooling cardiac arrest patient
US7695451B2 (en) * 1998-10-02 2010-04-13 Boston Scientific Scimed, Inc. Steerable device for introducing diagnostic and therapeutic apparatus into the body

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7695451B2 (en) * 1998-10-02 2010-04-13 Boston Scientific Scimed, Inc. Steerable device for introducing diagnostic and therapeutic apparatus into the body
US20080221553A1 (en) * 2007-03-07 2008-09-11 Collins Kenneth A System and method for rapidly cooling cardiac arrest patient
US8353893B2 (en) * 2007-03-07 2013-01-15 Zoll Circulation, Inc. System and method for rapidly cooling cardiac arrest patient

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