US1630927A - Smoke and gas collector - Google Patents

Description

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' May 31;1927.

J. w. EBERT SMOKE AND GAS COLLECTOR Filed March 6. 1926 Patented May 31, 1927.

JOHN W. EIBERT, OF FREDERICK, MARYLAND.

SMOKE AND GAS COLLECTOR.

Application fi1ed March 6, 1926. Serial No. 92,854.

The present invention relates to improvements in gas and smoke collector attachments for furnaces as illustrated in my previous United States Patents, 1,554,565 and 1,567,927.

It is the object of this invention to provide means of attaching such smoke and gas collectors to the furnace to securely maintain them in position and at the same time to permit them to be swung out of normal position to permit access to various parts of the furnace normally covered by the collector. 7

It is also an object of the invention to provide means in said collectors, which extend out over the stoker door of the furnace, by which the fire in the'furnace can be observed through the collector when the stoker door is open without requiring the attendant to stoop or to place his head underneath the hood of the collector.

lVith these and other objects in view the invention further resides in sundry details of construction, combination and arrangement of parts hereinafter more fully de scribed and pointed out in the appending claims In the specification and the annexed drawings, the invention is'disclosed in the form in which it is considered to be the best, but the invention is not limited to such form because it is capable of being embodied in other forms; and it is to be understood that in and by the claims following the description herein it is intended to cover the invention in whatever form it may embody within the scope thereof.

In the drawings which illustrate the preferred embodiment of the invention as at present devised Figure 1 is a front elevation of' a furnace showing the collector of this invention attached thereto;

Figure 2 is a side elevation of the invention as shown in Figure 1;

Figure 3 is a vertical sectional view of the collector of this invention and illustrating the same applied to a furnace, which latter is fragmentarily shown;

Figure 4 is a fragmentary perspective view of the rear of the hood equipped with the attaching means of this invention.

.Throughout the specification and draw ings wherein like characters refer to similar and like parts, A represents the furnace, here shown as of the hot water or steam type of cleaned off of the heating coils in the top of the furnace. There may be one or more soot doors E according to the size or design of the furnace. All of the above is conventional structure found in the furnaces (even in hot air furnaces with the exception of the soot door E) and it is the general construction for the stoking door B to be hinged on a. frame F which is suitably secured to the wall of the furnace and has a projection or flange f extending therefrom.

The present invention resides in the provision of a hood 10 of the general type and design disclosed in my two previous United gtates patents and adapted to be positioned immediately above the stoking door, the up per edge of the hood being in communication with a suitable flue conduit or other means for conveying gas and smoke, which emanate from the furnace when the stoking door is opened, from the hood by means of the natural draft therethrough. In the present showing, the connection between the hood 10 and the conduit 11. is made through a sliding sleeve 12, which when disengaged from the portion 13, will permit the same to be swung from its normal position shown in full lines in the drawing to the dotted line position indicated in Figure 3 for the purpose of enabling access to the soot door E.

To permit this shifting or swinging of the hood to the position shown in Figure 3 the hood is connected to a special attaching means whereby it is held in position on the furnace and capable of assuming the positions above referred to. This attaching means consists of an elongated strip 14 to which the lower rearedge portion a of the hood 10 is hinged as at 15. This strip 14 preferably coextensive with the horizontal length of the hood, as can be particularly seen in Figure 1, has the hinges 15 secured thereto at a substantially central portion thereof, thereby permitting the ends I) of the strip 14 to be flexed a desired amount to conform with the contour of circular boilers or furnaces. The strip 14 has a rearwardly extending lateral flange 16 formed on its lower edge. This flange is to be cut away or notched on an are, as indicated by the dotted line 17 in Figure 4 to receive and conform to the contour of the exterior surface of circular boilers or furnaces and to provide at its ends the rearwardly extending spacing members (Z between the surface of the furnace and the ends of the strip l t, in order to give support to the strip lt at its end and to close the space bet-ween the furnace and the end of the hood to prevent the escape of gas and smoke there-thrrniglr The flange 16 may be permanently and rigidly formed on the strip 14 or may be formed by bending the strip 1% longitudinally to provide the flange. When the device is used on rectangular shaped boilers the flange 16 is not required, and for this reason it is preferred to have the strip 14: of such material as may be bent to provide the flange 16 when necessary, as in connection with installations on circular furnaces.

The ends of the strip 1st are provided with suitable slots 0 through which extend the end portions of a metal strap 18, partially encircling the furnace, to hold the supporting strip 14 securely in position thereabout and above the stoker door frame F. The ends of the strap 18 are provided with suit-. able openings or perforations 19 and, when passed through the slots 0, are bent upon themselves to form an adjustable loop held by bolts or other fastening devices 20. Any flexure of the strip 14L due to any irregular cut of the notch 17 and the straining pull on the strap 18 is freely permitted by the position of the hinges without injury or strain on the hood. Yl hen used in connection with rectangular boilers of large dimensions suitable studs may .be provided on the front surface of the boiler to engage in the slots 0.

In the use of the hood 1O projecting out over the Stoker door, the condition of the fire within the furnace cannot be clearly seen by the attendant without stooping or placing his head under the hood. which obviously objectionable and dangerous. Therefore, a sight opening is provided in the front wall of the hood and closed by a sheet or plate of suitable transparent ma terial 21, such as glass, mica or the like. This Sheet or plate 21, is held in position by the frame member 22 clan'iping the edges of the plate 21 between it and the edges of the opening in the hood, theinembers :22 being held in position by bolts or rivets Since the stoker door of the furnace about two or three feet above the ground or sup portive base, the sight opening .21 in the front wall of the hood is in the normal line of vision of the attendant looking through the stoker door when in upright position.

From the above it will be obvious that a very durable, simple and economical attaching means has been devised for smoke and gas collectors for furnaces, which attaching means may be readily adapted to either circular furnaces or rectangular furnaces, and that an advantageous and practical improvement has been incorporated in the dust ollector by means ofpthe sight opening 21. The hood may be readily swung oul. of operative position without detaching the same from the furnace by lifting sleeve 12 from engagement with the collar, or sleeve 13 on the hood, whereby the hood will swing downto said strip at intern'iediate portions of the latter, an attaching strap adapted to en circle said furnace and adjustably connected to the end portions of said supporting strip. 2. A smoke and gas collector for furnaces comprising a hood to be positioned over the stoker door of the furnace means for attaching said hood to the furnace comprising a supporting strip, means movably connecting the lower rear edge portion of said hood to said strip, whereby the hood may be shifted to a plurality of positions relatively to toe supporting strip, said supporting strip having a rearwardly extending flange sustaining coextensive therewith and adapted to have an intermediate portion thereof engage the exterior of the furnace, and means for detachably supporting the strip on the furnace.

3. A smoke and collector for furnaces comprising a hood to be positioned over the stoker door of the furnace, means for attaching said hood to the furnace comprising a supporting strip, means movably connect mg the lower rear edge portion of said hood to said strip, whereby the hood may be shifted to a plurality of positions relatively to the supporting strip, said supporting strip being adapted to be bent longitudinallv to provide a rearwardly extending flange, said flange being adapted to be cut away at its iear edge to provide an inwardly extendmg recess to conform with the eXterior of the furnace, means for securing said sup porting strip in position on the furnace.

In testimony whereof I have hereunto set my hand.

JOHN VIM. EBERT.

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