US2603209A - Smokebox for heating apparatus - Google Patents

Description

J y 15, 1952 R. B. DICKSON ETAL 2,603,209 I SMOKEBOX FOR HEATING APPARATUS Filed Jan. 5, 1949 2' SHEETS-SHEET 1 INVENTORS July 15, 1952 R. B. DICKSON ET'AL 2,603,209

SMOKEBOX FOR HEATING APPARATUS Filed Jan. 5, 1949 2 sHEETS-SHEET 2 INVENTORS Patented July 15, 1952 SMOKEBOX son HEATING APPARATUS Robert B. Dickson and Roy H. somers, Kewanee, 111., assignors to Kewanee Boiler Corporation, v-Kewanee, 111., a corporation of Delaware Application January 5, 1949, Serial No; 69,256

A boiler smokebox, as its name indicates, is a box-like steel or comparable enclosure or housing attached to the boiler proper for the purpose of collecting or assembling smoke and gases from the boiler, and directing them, by means of a suitable sheet-metal or other appropriate conduit or flue, generally referred to as a breeching, to a stack or chimney for the discharge or delivery therefrom to the atmosphere. Such breeching may be attached or connected to the smokebox in either a horizontal or a vertical position depending on the requirements of the particular installation, and since these demands or needs vary greatly it becomes of substantial importance that the smokebox have provision for readily making either a horizontal or a vertical connection therewith without necessity for the use of special tools or particular training. t

The present invention efficiently meets suc requirement in that by the innovatory structure and mode of operation of the smokebox incorporating the instant invention, the specified problem was adequately solved.

The new box is relatively simple in construction, is comparatively inexpensive to build, is unlikely to become damaged or injured in assembling its parts together, is of long life, is reasonably safe from injury or damage during ordinary service, etc. i

The assembled box is preferably made up of three parts aside from means fastening such elements or members together.

, One of these members or parts constitutes the bottom and the two opposite end-walls of the smokebox, another or companion member constitutes the top and back of the box, such companion member having an opening therethrugh which receives the third member or part which is flanged and known as a smoke neck. It is to such neck that the breeching is actually applied, such smoke neck being of'such size and shape that the flattened end of a stock piece of smoke pipe or breeching will readily slip over its flange.

In order that those acquainted with this art may readily understand the present invention, and its structural and. functional advantages, a present preferred embodiment of such invention has been illustrated in the accompanying drawings, forming a part of this specification, and described below in detail whereby any one having a knowledge of this art will readily appreciate the advantages of its novel structure In such drawings: I

Figure 1 presents a perspective view of a boiler whose rear wall has one of the newsmoke- 9 Claims. (01. 126-307) boxes mounted thereon, the breechingconnection of such smokebox-to the stack or chimney not being shown;

Figure 2 illustrates a vertical cross-section through the smokebox portraying the manner of mounting it on the boiler;

Figure 3 is a vertical section through such box on line 3-3 of Figure 2 as viewed inithe direction indicated by the arrows;

Figure 4 is a'fragmentary vertical section of the boiler and through the smokebox similar to Fig. 2, but with the outlet construction at the top of the box instead of the back thereof;

Figure 5 depicts the sheet-metal member of the smokebox constituting its internal bottom and opposite end walls;

Figure 6 portrays the other member of the box comprising its top and back perforated wall;

Figure 7 illustrates the same sheet-metal member as shown in Figure 6 presented as used to have the smokebox top as discharging the smoke and gases through it; and

Figure 8 presents in perspective the smokeneck which is to be mounted in the discharge opening which occupies one of the two walls illustrated.

Referring to Figure 1 of the drawings, the boiler H) has the novel smokebox l2 embodying the current invention suitably mounted on its rear-wall II in position to receive through its front the smoke and gases from the interior of the boiler, and to discharge them' from the interior of the smokebox through the opening in its back-Wall.

The bent, sheet#metal,* integral member or first unit, designated as a whole It, of the smokebox illustrated in Figure 5, by itself alone, is made from a flat blank and then bent to form a plane rectangular bottom and flat, vertical, substantially square end- walls 14,15, of like size with cleanout openings l6, it normally closed by manually removable covers l1, I! (Figure 3).

The bottom of such first unit is equipped with full length front and rear upstanding flanges I8 and I9, respectively, the front narrow flange l8 having welded thereto three apertured mounting clips 2|, 22, 23, employed to accommodate stud-bolts extending through the holes of such clips and registering holes in the wall of'the boiler to fasten the box thereto;

' Each end-wall l'and [5 has three inturned, bevelled-end, integral flanges,'these comprising a back flange 2 with two spaced apertures 21 and 28 therethrough', a top flange 2 5 with like separated apertures 29 and 3!. and a somewhat narrower unapertured flange 26. The flanges 26, 26 and I8 are in the same vertical front plane and flanges 24, 24 and H] are in the same vertical back plane. The other or companion or complementary main sheet-metal member or second unit 32 of the smokebox is of angle form, shown separate from the other parts in Figures 6 and '7, and has an apertured rectangular wall 33 with an oval opening or perforation 34 therethrough of the shape depicted in said Figures 6 and 7. In the opening 34 is snugly fitted the third part or member which is the smokeboxneck designated as a whole 35 (Figure 8) having a neck part 36 of the same shape and external size as the opening 34 and having a flange 31 extending from the part 36 and bearing against the inner face of wall 33 and spot-welded thereto. The neck part 36 projects sufliciently be-- yond the wall 33 for the easy application thereto of an outlet flue or breeching connection 9, as shown in dotted lines in Figures 2 and 4. The margin of the wall 33 parallel to the angle edge has an inturned bevelled-end flange 38 fitted with three apertures 39 (Figures 2, 6 and 7), whereas each of the two end portions of wall 33 and fitted with a pair of apertures 4|, 4|, each pair being spaced apart the same distance as apertures 21 from 28, and 29 from 3|.

The wall 40 integral with the wall 33 and of the same rectangular size as wall 33, and which is at a right-angle to such wall 33, has at each of its two ends a pair of apertures 42, 42 therethrough, each pair being spaced apart the same distance as the apertures 21 from 28, and 29 from 3|. The longitudinal edge of wall 40 parallel its angle edge has'an inturned flange 43 (Fig. 6) at right-angles to the sheet 40 and provided with bevelled-ends, such flange having three apertures 44 spaced like those, 39, of the other flange 38.

Assuming that the smoke and gases are to be delivered horizontally from the smokebox, the second unit member 32 (Figure 6) is applied to the first unit member I3 (Figure withthe smokebox-neck aperture positioned as shown in Figure 6, and the two parts or members are held together by eight bolts 40a extended through the sixteen apertures 21, 28, 29, 3|, 4| and 42 with the flange 38 below the bottom of member I3, as depicted in Figure 2.

When the two elements 32 and I3 are thus fastened together, the smokebox -which previously had the smokebox-neck fastened in place in the aperture 34 is mounted on the back of the boiler by bolts through the apertures of clips 2|, 22 and 23 and through the apertures 44 of flange 43, as presented in Figure 2.

Of course, to complete the contruction the breeching is thereafter applied to the neck 35.

In case the breeching is to be connected vertically to the smokebox then the element 32 is joined to the member l3 in a different manner, namely, in the position shown in Fig. 7, with the apertured wall 33 of the second unit 32 at the top and with the unapertured wall 40 at the back, and in that case the bolts occupying holes 21 and 28 also occupy the four holes 42, of wall 40 which is then disposed vertically instead of horizontally, and those bolts filling holes 29 and 3| also occupy the four holes 4|, and the finished appliance in section assumes the appearance portrayed in Figure 4.

Under these circumstances, the apertured clips 2|, 22 and 23 and the three holes 39 of flange 38 are employed by means of bolts to fasten the smokebox to the boiler, the smokebox-neck 35 having at any suitable time previously been fitted and secured in aperture 34.

Whereas various details of construction have been presented in the drawings and set forth in the above description, it is to be understood that various modifications may be resorted to without departure from the heart and essence of the invention as presented in the following claims and without the loss or sacrifice of any of its material or substantial benefits and advantages.

We claim:

1. A sheet-metal smokebox having an open front adapted to be mounted at the outlet of a heating apparatus combustion chamber to re- Wall with opposite, upright, substantially square,

aligned, end-walls of the same size each with integral, inwardly directed, marginal, top and back apertured flanges, a second, companion, integral, bent sheet-metal unit with one flat wall perforated for the discharge of smoke and gases therethrough, said perforated wall being of substantially the same length as said first unit bottom-wall and of substantially the same height as said first unit end walls, a flat second wall integral with and folded longitudinally of and at a right-angle to said second unit perforated wall and of substantially the same dimensions as those of said perforated wall, the opposite edges of said second unit two walls having like apertured flanges bent inwardly at right-angles to their longitudinal walls, the apertures of said second unit flanges being adapted to accommodate studbolts to fasten either one of such flanges to the heating apparatus, the opposite end portions of each of the two walls of said second unit being apertured for the reception of bolts extended through either one of such two walls and the apertures of the back or top flanges of the first unit to fasten them together with the perforated wall being adapted to be at the back of the smokebox or on its top for theproper application of a breeching connection thereto.

2. The smokebox construction presented in claim 1, in which the perforation of the one wall of the second unit accommodates a smokebox neck occupying said perforation and having a flange spot-welded to the inner side of the perforated wall of said second unit, and with the smokebox neck protruding out of said perforation for the application of a breeching connection therewith for the discharge of the smokebox gases therefrom.

3. The smokebox construction presented claim 1, including in addition unperforated up claim 1 in which, when the perforated wall ofv the second unit is fastened in place on the first unit as the back vertical wall of the box, its

longitudinal flange is located directly below the bottom wall of the first unit. a

6. A smokebox consisting of two main ben sheet-metal units fastened together, the first such unit having a bottom wall and two opposite upstandingv end walls integral therewith,

the second companion sheet-metal unit having two integral walls of the same size at a rightangle to one another, one of said two walls being perforated for the discharge of smoke and gases, a smokebox neck occupying such perforation for the application of a breaching connection thereto for the discharge of the smoke and gases from the smokebox, and means to fasten said second unit with its two walls as the back and top walls of said first unit.

7. A smokebox comprising complementary members adapted to be fastened together, one of said members having a bottom wall and end walls at substantially right angles to said bottom wall, the other of said members having at least two walls at right angles to each other to provide side and top walls, means securing said members to each other to form a chamber, one of said two walls having an aperture therethrough for discharge of gases from said chamher, and said other of said members being so constructed that either of said two walls can be positioned to form the chamber top wall.

8. A smokebox comprising complementary members adapted to be fastened together, said members having walls extending at substantially right angles to each other to form a chamber, one of said members having at least two of said walls, one of said two walls having an aperture therethrough for the discharge of combustion gases, said one of said members being so constructed that either one of said two walls can be positioned to form the chamber top wall and the other a chamber side wall, a neck member either one of said two walls can be positioned to form the chamber top wall andthe other a chamber side wall, one of said two walls having an aperture therethrough for the discharge of combustion gases, and means rigidly securing said members together.

ROBERT B. DICKSON. ROY H. SOMERS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 407,707 Utter July 23, 1889 1,179,995 Beckwith Apr. 18, 1916 1,209,043 Scherer Dec. 29, 1916 1,390,309 Perrow Sept. 13, 1921 1,509,517 Marr et al Sept. 23, 1924 2,180,212 Morrow Nov. 14, 1939

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