US137561A - Improvement in chimney-cowls - Google Patents
Improvement in chimney-cowls Download PDFInfo
- Publication number
- US137561A US137561A US137561DA US137561A US 137561 A US137561 A US 137561A US 137561D A US137561D A US 137561DA US 137561 A US137561 A US 137561A
- Authority
- US
- United States
- Prior art keywords
- chimney
- valve
- wind
- cowls
- improvement
- 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
- 238000007664 blowing Methods 0.000 description 3
- 239000011449 brick Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
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 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
- F23L17/10—Tops for chimneys or ventilating shafts; Terminals for flues wherein the top moves as a whole
Definitions
- my invention consists in the i'orm and arrangement of a vibrating valve pivoted to the two raised sides of a chimney.
- the valve is pivoted near its center and balanced so as to hang vertically when ⁇ there is no wind.
- the upper part of the valve above the. pivots presents a greater surface to the wind than the lower part, so that the valve is forced over by the wind in a manner to prevent the wind blowing down the chimney. ⁇ Vhen the wind blows direct across the edge ot the valve the raised sides ot' the chimney prevent the downward draft.
- Figure l is a perspective view of the cap from the rear, the quarter from which the wind is blowing.
- Fig. 2 is a perspective view facing the wind.
- Fig. 3 is an end view of the valve in a brick chimney.
- y Fig. 4 is a section through thevalve and chimney on line m y.
- Fig. 5 shows a slight modification in the cap.
- the cap A I make rectangular, of sheet metal, with two of the sides, a', standing above the other two sides.
- a thin sheet-iron f valve, B is pivoted in holes C in the raised heaviest, which keeps the valve in a perpenA dicular position when there is no wind to influence it. The valve is prevented from turn ing over too far by its lower edge coming in contact with the end of the cap or against the studs a.
- the arrows O show the direction ofthe wind, and the arrows p the current of smoke, gas, or foul air.
- the exit of the smoke may be facilitated by flaring outward the edge of the cap, as at d, Fig. 5.
- valve B pivotcd so as to tilt over by the pressure of the wind upon its upper surface, substantially as herein described, in combination with the raised sides a of the chimney.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
w. H. MYERS.
` Chimney Cowls. Y No. 137,561. ParemedApmsnss.
AM. PHoro-LlrnasMPme ca Mx (asaomve's rimossa) UNITED STATES PATENT GEEICE.
WILLIAM II. MYERS, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN cl-nlvnaEY-cowis.`
Specilication forming part of Letters Patent No. 137,561, dated April 8, 1873; application filed l January 31, 1873.
To all whom it may concern:
Beit known that I, WILLIAM H. MYERS, of Philadelphia, Pennsylvania, have invented a certain Improved Chimney Cowl or Cap, of which the following is a specification:
The nature of my invention consists in the i'orm and arrangement of a vibrating valve pivoted to the two raised sides of a chimney. The valve is pivoted near its center and balanced so as to hang vertically when` there is no wind. The upper part of the valve above the. pivots presents a greater surface to the wind than the lower part, so that the valve is forced over by the wind in a manner to prevent the wind blowing down the chimney. \Vhen the wind blows direct across the edge ot the valve the raised sides ot' the chimney prevent the downward draft.
Figure lis a perspective view of the cap from the rear, the quarter from which the wind is blowing. Fig. 2 is a perspective view facing the wind. Fig. 3 is an end view of the valve in a brick chimney. y Fig. 4 is a section through thevalve and chimney on line m y. Fig. 5 shows a slight modification in the cap.
The cap A I make rectangular, of sheet metal, with two of the sides, a', standing above the other two sides. A thin sheet-iron f valve, B, is pivoted in holes C in the raised heaviest, which keeps the valve in a perpenA dicular position when there is no wind to influence it. The valve is prevented from turn ing over too far by its lower edge coming in contact with the end of the cap or against the studs a.
The arrows O show the direction ofthe wind, and the arrows p the current of smoke, gas, or foul air.
The exit of the smoke may be facilitated by flaring outward the edge of the cap, as at d, Fig. 5.
Brick chimneys are already built with the y raised sides H, Figs. 3 and 4. I adapt my valve to them, as shown, by inserting a soapstone brick, h', drilled out so as to serve as a bearing for the'pivot. `IThe soap-stone prevents the creaking so objectionable about a cowl.
When the wind blows square across the chimney the valve hangs perpendicular, and the raised sides prevent the Wind blowing down. As soon as it varies to either quarter the valve lies over, as shown in the drawing, preventing the windfrom actingupon the current of smoke, except in the same direction only with itself.
I claim- The valve B pivotcd so as to tilt over by the pressure of the wind upon its upper surface, substantially as herein described, in combination with the raised sides a of the chimney. Y
IVM. H. MYERS.
Witnesses:
JAMEs E. COOKE, J oHN F. GRANT.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US137561A true US137561A (en) | 1873-04-08 |
Family
ID=2206977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US137561D Expired - Lifetime US137561A (en) | Improvement in chimney-cowls |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US137561A (en) |
-
0
- US US137561D patent/US137561A/en not_active Expired - Lifetime
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