US295499A - Ventilating apparatus - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1. W. LORD;

V VENTILATING APPARATUS.

( No Model.) 2 Sheets-Shed 2 W. LORD.

VENTILAIIN G APPARATUS. I Np. 295.499; V Patented Mar. 1.5 1884 1 I 1 V flr- 5 H L=%F :::S::;.- 1

w P 3 A LA H e 3 YATES UNITED A'rnsrr Erica.

VE NTlLATlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 295,499, dated March is, 1.884. Application filed July 16, 1883. No model.) Patented in England March 28, 1883, No. 1,567.

To aZZ whom it 71mg concern.-

Be it knownthat I, WILLIAM LORD, a subject of the Queen of Great Britain, and residing at Middlesbrough, county of York, England, have invented certain improvements in appa ratus for preventing downdraft in chimneys and for ventilating railway-carriages and for other ventilatingpurposes, (for which I have obtained a patent in Great Britain, No. 1,567, dated March 28, 1883,) of which the following is a specification.

My said invention relates to apparatus to be applied to the upper part of chimneys, ventilating'shafts, or the like for the purpose of preventing downdraftand dispersing smoke and for effecting the ventilation of rooms, railwaycarriages, and for other like purposes.

In carrying my invention into effect, I provide the upper part of the chimney or shaft with surrounding concentric bands or rings partly overlapping each other, so that there are spaces between the overlapping parts. The chimney-top or shaft-top andeach band or ring are furnished with a number of inclined blades, which blades are fixed to the exteriorsof the said top and bands or rings, and pass into the spaces between the overlapping parts. At the top or upper part may be fitted a plate, covering or partly covering the top and supported a short distance above or below the up permost band or ring or level therewith.

The apparatus constructed as described may be used as a chimney top or cowl or. as a ventilator; but when it is used for ventilating railway-carriagesor the like the top plate will be provided with a curtain,which depends telow the top of the uppermostband or ring, and the part by which the apparatus is fixed to the railway-carriage will be preferably made funnel-shaped in the interior at bottom, and be provided on its exterior with blade-springs, which,by their outward pressure when the apparatus is slipped intothe opening in the railway-carriage roof, will retain the apparatus in place. i Figures 1 and 2 of the accompanying drawings respectively represent in elevation and vertical section a chimney-top constructed according to my invention for preventing downdrafts and dispersing smoke, and Figs. 3 and 4 are respectively an elevation and vertical section of a modification of my invention fitting it for use as a ventilator for railway-carriages or for other like purposes.

Referring to Figs. 1 and 2, A is the body of the chimney-top,which, by preference,I make of a tapering or conical form, as shown.

On the upper part of the body A are secured a number of inclined blades, B, to the upper ends of which is fixed concentrically to the body A a ring, band, or cylinder, 0, partly overlapping the body A.; I

On the exterior surface of the cylinder 0 are fixed a number of inclined blades, D, similar to those marked B, and to the upper ends of these blades is fixed concentrically to the cylinder B, and partly overlapping the same,another cylinder, E, which is also similarly provided on the exterior with inclined blades F, to the upper ends of which is attached another cylinder, G, forming the crown or terminal of the chimney-top. It will thus be seen that the chimney-top is of. gradually-increasing size from the bottom to the top, and that a number of annular cencentric passages, aa, are formed between the body A and the cylinder 0 and betweenthe cylinders O and E and between the cylinders E and G, which passages are subdivided by the blades B, D,and F into a number of smaller passages or channels, aal. Theadvantage of this arrangementis that avery powerful upward current of air in a direction inclined to the axis of the chimney or shaft is produced, which, acting after the manner of an ejector, creates an upward current in the shaft or chimney and effects the withdrawal of any foul air or smoke that may be therein, while downdraft is prevented.

I make the blades B DFto break joint I The plates B, D, and F are, by preference,

made with a projecting edge or lip or; are trough-shaped, as shown in transverse section on a larger scale in Fig. 2*, to facilitate the upward course of the current.

a The apparatus hereinbefore described may be used for ventilating railway carriages,

IOO

tilating purposes the arrangement illustrated the interior of the carriage or chamber.

I 5 tion in the roof of a railway-earriage or other of-the carriage or apartment.

churches, ships" cabins, and other structures, buildings, or rooms by arranging a cover or plate over the top or crown to prevent the entrance of rain; but I prefer to employ for venby Figs. 3 and 4 of my drawings, in which the top cylinder, E, carries a top plate or dome, H, provided with a depending rim or curtain, H to prevent the possibility of rain entering The lower portion, A of the apparatus is cylindrical on the exterior and provided with bladesprings a for the purpose of securing the apparatus in the opening provided for its recepplace to which it is to be applied,while the interior is made funnelshaped or conical, as shown at a, to insure the increased facility for the escape of the foul air from the interior The ventilator may or may not be provided with a valve or valves, as shown in dotted lines at i,which can be turned down,when required, I

by means of a handle, 2*. The other parts, which resemble those shown in Figs. 1 and 2, are marked with the same letters of reference, the upper ring, G, and blades F being dispensed with.

I do not limit myself to the use of the number of rings or cylinders and series of blades shown, as two or more may be used for the chimney-top and one or more for the ventilator, as found convenient.

I claim-- A ventilator or chimney-top consisting of inclined blades on the outside, substantially as described.

WVILLIAM LORD. Vitnesses:

J. R. STUBBS,

ZVIz'ddlesbrough, Notary Public. Tr-ros. Hoon,

SoZicitor, lllz'ddlesbrough, England.

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