US212647A - Improvement in ventilator-caps - Google Patents
Improvement in ventilator-caps Download PDFInfo
- Publication number
- US212647A US212647A US212647DA US212647A US 212647 A US212647 A US 212647A US 212647D A US212647D A US 212647DA US 212647 A US212647 A US 212647A
- Authority
- US
- United States
- Prior art keywords
- ventilator
- tube
- shaft
- caps
- forming
- 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 - Lifetime
Links
- 230000000875 corresponding Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
Images
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 GENERALĀ ; 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
Definitions
- My invention consists in a Ventilator-cap, preferably formed of sheet metal, adapted to be secured to the top of aventilatin g shaft or tube, and comprising an upwardly flaring dellector, surmounted by an upwardly contracted deflector, the two forming frustums of cones, united at their bases, and an internal upwardly-contracted deector, also forming a frustum of a cone, whereby wind striking the Ventilator-cap is deflected upward and downward, causing the air therein to expand, and maintaining a rapid draft in the shaft or tube.
- a Ventilator-cap preferably formed of sheet metal, adapted to be secured to the top of aventilatin g shaft or tube, and comprising an upwardly flaring dellector, surmounted by an upwardly contracted deflector, the two forming frustums of cones, united at their bases, and an internal upwardly-contracted deector, also forming a frustum of a cone, whereby
- Figure 1 represents a side elevation of a ventilatoreap embodying my improvements
- Fig. 2 a central Vertical section thereof.
- A designates a Ventilating shaft or tube, near the top of which is secured an upwardlyflaring delector, B, forming a frustum of a cone. rIhis defleetor is fitted outside the shaft or tube, and is larger at the lower end than the said shaft or tube, so as to leave a space between the two.
- G designates an upwardly-contracted delector, also forming a frustum of a cone, surrounding the defleotor B, and the upper end of which may be of about the size of the Ventilatorshaft or tube A.
- D designates an upwardly-contracted deilector, also forming a frustum of a cone, secured to the Ventilator shaft or tube at the top, above the dellector B, within the dellector (l, and the upper end of which extends above the deileetor C.
- the deflector D is placed a little above the end of the shaft or tube, so as to leave an opening, a, between the two, through which air may pass out.
- E designates a cap, forming a weather-cone, which extends over the Ventilator-cap, and prevents rain from falling down the shaft or tube.
- a Ventilator-cap adapted to be secured to the top of a Ventilating shaft or tube, and comprising an upwardly-flaring deflector, B, surmounted by an upwardly-contracted deflector, G, the two forming frustums of cones, united at their bases, and an internal upwardly-contracted deilector, D, also forming a frustum of a cone, substantially as and for the purpose specified.
Description
P. J'. BELFORD. Ventilator-Gap.
No. 212,647.l Patented' Feb. 25,1879.
Y Www@ N.PETERS, FHOTO-LITHOGRAPHER, WASHINGTON, D. C.
'UNITEDv TATES PATENT OFFICE.
PHILIP J. BELFOBD,
or Nnw YORK, N. Y.
llVl PROVEM ENT lN VENTI LATO R-CAPS..
Specification forming part of Letters Patent NO. 212,647, dated February 25, 1879; application filed December 26, 1878.
To all whom it may concern:
Be it known that I, PHILIP J'. BELFoRD, of the city of New York, in the county and State of New York, have invented certain new and useful Improvements in Ventilator-Caps, of which the following is a specification:
My invention consists in a Ventilator-cap, preferably formed of sheet metal, adapted to be secured to the top of aventilatin g shaft or tube, and comprising an upwardly flaring dellector, surmounted by an upwardly contracted deflector, the two forming frustums of cones, united at their bases, and an internal upwardly-contracted deector, also forming a frustum of a cone, whereby wind striking the Ventilator-cap is deflected upward and downward, causing the air therein to expand, and maintaining a rapid draft in the shaft or tube.
In the accompanying drawings, Figure 1 represents a side elevation of a ventilatoreap embodying my improvements, and Fig. 2 a central Vertical section thereof.
Similar letters of reference designate corresponding parts in both figures.
A designates a Ventilating shaft or tube, near the top of which is secured an upwardlyflaring delector, B, forming a frustum of a cone. rIhis defleetor is fitted outside the shaft or tube, and is larger at the lower end than the said shaft or tube, so as to leave a space between the two.
G designates an upwardly-contracted delector, also forming a frustum of a cone, surrounding the defleotor B, and the upper end of which may be of about the size of the Ventilatorshaft or tube A.
D designates an upwardly-contracted deilector, also forming a frustum of a cone, secured to the Ventilator shaft or tube at the top, above the dellector B, within the dellector (l, and the upper end of which extends above the deileetor C. The deflector D is placed a little above the end of the shaft or tube, so as to leave an opening, a, between the two, through which air may pass out.
E designates a cap, forming a weather-cone, which extends over the Ventilator-cap, and prevents rain from falling down the shaft or tube.
It is obvious that wind striking the exterior of the dellectors B and C is dellected both upward and downward, and causes the foul air drawn through the opening a to escape at the top and bottom of said dellectors, asindicated by the arrows b. Wind which passes between the top of the dellector G and the weather-cone E strikes the internal delector D, and causes the air to pass out at the top of said delieetor, as indicated by the arrows o.
By my invention wind striking the cap is deflected by the surfaces of the three deflectors, and three drafts are created, causing the air to expand, and maintaining a strong draft through the Ventilating shaft or tube.
My improvements might be embodied in chimneycowls with advantage.
Vhat I claim as my invention, a-nd desire to secure by Letters Patent, is-
A Ventilator-cap adapted to be secured to the top of a Ventilating shaft or tube, and comprising an upwardly-flaring deflector, B, surmounted by an upwardly-contracted deflector, G, the two forming frustums of cones, united at their bases, and an internal upwardly-contracted deilector, D, also forming a frustum of a cone, substantially as and for the purpose specified.
PHILIP J. BELFORD.
Witnesses:
T. J. KEANE, FRED. HAYNES.
Publications (1)
Publication Number | Publication Date |
---|---|
US212647A true US212647A (en) | 1879-02-25 |
Family
ID=2282053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US212647D Expired - Lifetime US212647A (en) | Improvement in ventilator-caps |
Country Status (1)
Country | Link |
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US (1) | US212647A (en) |
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0
- US US212647D patent/US212647A/en not_active Expired - Lifetime
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