US128514A - Improvement in chimney-cowls - Google Patents

Description

C. TURNER Chmn/ey-Cowl.

128,514. l Patentedjuly 2,1872.

MTN: 53 /vvslvron hv. 21%, .2mm

IPATENT OFFICE.

CHARLES TURNER, 0E soUTHAivIPToN, ENGLAND.-

IMPROVEMENT IN CHlMNEV-COWLS.

Specification forming part of Letters Patent No. 128,514, dated July 2, 1872.

SPECIFICATION.

To all whom it may concern:

Be it known that I, CHARLES TURNER, of Southampton, in the county of Southampton, England, have invented certain new and useful Improvements in Chimney-Cowl and Ventilator; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon which form a part of this specication.

My invention consists of an improved cowl capable of being deflected by the wind, for the prevention of down-draughts in chimneys, ventilatin g, and other shafts. 1 In the accompanying drawing, Figure 1 is a vertical section of my improved cowl, showing all the devices used. Figs. 2 and 3 are detail sections of the central part of same.

A is a tube having its upper part circular and the lower end either round, square, or any desired shape. From its upper end, and at- 4 taehed to the inner surface, spring four arms,

al, converging at their upper eXtr emities,where they arebent inward and downward, beingiirmly secured to the inner side of a shallow dish or tray, a2. In 'the center of this dish or tray a2 is a piece of metal having in it a conical socket, a3. B is the cowl, preferably bellshaped, constructed of zinc, iron, or other suitable metal, and hung on a central stem or pivot, b1, securely xedinside the cowl at the top, by any ordinary means, and may, if necessary, be further secured by stays frorn the inner side of said cowl. A slot or loop, b2, is formed in stem b1, which is curved to the are of a circle described from the point of said stem or pivot b'. To the top of said cowl B is fixed a counter-balance, b3, of any desired shape. A pair of springclips, a", are formed irst into a small coil, bent downward, then outwardly and upward, the two ends being bent to a curve corresponding to the line of curvature in slot or loop b2, and meeting therein. The junction between the two ends of this spring-clip a4 may be effected by means of a short tube secured to one of its ends, into which the other limb is received. The two ends of this spring-clip a4 are passed through suitable openings provided in the bottom of said dish or tray a2, when the coil before mentioned is firmly secured to the under side of same, as seen in Figs. 1 and 2 of the accompanying drawing. When in position the said springc1ip a4 prevents the cowl from being carried away by the wind, but it can readily be released by pressing the lower part of said spring-clip ai, thus opening the two ends thereof. An inverted cone, d, is placed over the outside of said dish or tray a2. A flange, c5, upon the outer side and a little below the upper end of tube A is also provided, the space above this flange being covered externallywith felt or other suitable material to prevent any noise arising from the sudden Contact of said cowl B upon tube A.

To place the cowl in position, the inverted cone d is withdrawn, the lower part of the spring-clip a4 compressed, whereby its .extremities are opened, when the point of stem b1 is placed in the conical socket a3 provided in dish or tray a2. The cowl then hangs in a vertical position, leaving a clear space between its lower edge and the upper edge of tube A, as seen in Fig. l of the accompanying drawing. The curving of loop or slot b2 and upper ends of spring-clip a4, in the manner described, allows the cowl B to oscillate freely in any direction. When placed upon a chimney-top or other ventilating-shaft the wind impinges against the cowl, and, oscillating it to position shown by dotted lines in Fig. 1 of the accompanying drawing, depresses that side, whereby the wind is excluded from the top of chimney, and the opposite side of the cowl being raised, an exit is always provided for the smoke on the lee side. An upward current is also induced in chimney or other ventilatingshaft by the action of the wind passing the sides of said cowl B. It will be readily understood that, owing to the peculiar manner of suspending the cowl B, when it assumes the position shown by dotted lines in Fig. 1 of the accompanying draw# ing, the preponderance of weight is thrown upupon the raised or lee side; hence the use of counter-balance b3 to assist the depression of cowl to Windward.

The inverted cone d not only serves to proteot the lower part of spring-clip a4 from soot, but also, when the air is motionless and the cowl hangs in a vertical position, to deflect outwardly the current of air or smoke. The cowl is kept clear of soot by the almost constant jar cca-sioned by its coming in contact with tube V'Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is`

lpThe combination of the oscillatory cowl B, counter-balance b3, slotted pivot b1, socket a3, and spring-clips a4, substantially as and for the purpose specified.

2. The combination of the oscillatory cowl B and inverted cone d, operating substantially as and for the purpose speoied.

In testimony that I claim the foregoing as my own I afi-ix my signature in presence of two witnesses.

CHARLES TURNER.r Witnesses:

EDWARD TALK, J. P., ALFRED RUssELL.

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