US204804A - Improvement in chimney-cowls - Google Patents

Improvement in chimney-cowls Download PDF

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US204804A
US204804A US204804DA US204804A US 204804 A US204804 A US 204804A US 204804D A US204804D A US 204804DA US 204804 A US204804 A US 204804A
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cowl
chimney
cowls
improvement
same
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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
    • F23L17/10Tops for chimneys or ventilating shafts; Terminals for flues wherein the top moves as a whole

Description

P. A. DUGAN. Chimney Cowl.
Patented June 11,1878.
Evan/i014 UNITED STATES PATENT OF ICE;
PHILIP A. ,D'UYGAN, OF nrtooknvrgnnvv YORK.
IMPROVEMENT IN CHlMNEY-COWLS.
Specification forming part of Letters Patent No. 204,804, dated June 11, 1878; application filed May 15, 1878.
To all whom it may concern:
Be it known that I, PHILIP A. DUGAN, of Brooklyn, Kings county, New York, have invented, made, and applied to use Improvements in the Construction of Ohimney-Oowls; and that the following is a full, clear, and correct description of the same, reference being had to the accompanying drawing, making part of this specification, and to the letters of reference marked thereon, in which- Figure l is a section through the line y y of Fig. 2. Fig. 2 is a front elevation of my chimney-cowl. Fig. 3 is a section through the line so a; of Figs. 1 and 2.
In the drawing like parts of the invention are designated by the same letters of reference.
The nature of the present invention conslsts in improvements in the construction of chimney-cowls, as more fully hereinafter set forth, the. object of the invention being the production of a chimney-cowl simple in construction and effective in operation.
To enable those skilled in the arts to make and use my invention, I will describe the same.
Ashows a square base, formed of metal, made of the proper height, and intended to support the revolving cowl B. The base A has placed within its interior the cross-braces a a positioned relatively at or near its base and upper portion, through which passes a spindle, c, the upper portion of which is pointed, and forms a pivot, on which the cowl revolves. B shows the cowl, formed of a section of acylinder, having the metal of which it is composed upon one side serrated and bent or thrown out to form the wings C, while in its opposite side is an opening, provided with the mouth-piece I), for the entrance of the .whnl. d is a cross-brace, placed upon the interior of the cowl B, and provided with a neck, 0, through which passes the spindle c,- and f is a cap-piece, secured upon the under side of the cover E of the cowl, within which the pivoted end of the spindle c is received.
The spindle c has a screw thread, g, cut upon it above the neck 0, and on this is passed a nut, h, by turning which the position of the upper portion of the cowl B may be regulated as the same is drawn closer to or removed from the pointed end of the spindle 0. Within is as follows: The square base A, having had placed upon it the revolving cowl B, is positioned properly upon the chimney of the house or building and secured in position upon the same. As the cowl B revolves, the air enters it through the mouth-piece D and passes over the curved upper portion of the shield or deflecting-plate E and .to the opposite side of the cowl. The smoke from the chimney rises through the same, enters the square base A, passes through it, is deflected in its course by the deflecting-plate or shield F, and, being met by the current of air which has entered the cowl through the mouth-piece D, is expelled through and from the enlarged opening in the same, the wings G, as it passes them, tending to direct it after it leaves the square base.
The projecting collar or flange H, projecting, as it does, below the top of the square base,
serves also, to a certain extent, todirect any currents of air which may enter the cowl at this point upward and directly into the interior of the cowl, whence they are properly deflected and directed by the deflecting-plate or shield.
By the use of a cowl constructed as shown, the chimney to which the cowl is applied will be kept free and relieved of the smoke expeditiously, and an excellent draft in the same be created.
Having now set forth my invention, what I claim as new is 1. The combination-,'in a chimney-cowl, of the following elements: a square base, A, and a revolving cowl, B, composed of a section of a cylinder, and provided with a deflectin g-plate or shield, F, and supported by a spindie, 0, constructed and operating substantially and vane G, constructed and operating sub as anti} for the purposes specified. 1 f stantially as and for the purposes set forth.
2. he combination in a chimney-cow o the following elements: a square base, A, re- PHILIP DUGAN' volving cowl B, supported by aspindle, c, and In presence ofprovided with wings G, deflecting-plate or r A. SIDNEY DOANE, shield 13, mouthpiece D, circular collar H, WILLIAM V. H. HICKS. v
US204804D Improvement in chimney-cowls Expired - Lifetime US204804A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375783A (en) * 1981-05-15 1983-03-08 Young Lester L Chimney top spark arrester

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375783A (en) * 1981-05-15 1983-03-08 Young Lester L Chimney top spark arrester

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