US2160803A - Heating apparatus - Google Patents

Description

May 30, 1939. B. GoERG 2,160,803

HEATINGv APPARATUS Filed March 5l, 1938 5,Sheets-Sheet 2 J4 5e/Me 60596 vMay 30, 1939. B. GOERG 2,160,803

' HEATING APPARATUS Filed March 31, 1958 5 sheets-sheet s INVENTOR fm/,4R0 (fof/P6 ARNEY B. GOERG HEATING APPARATUS May 30, 1939.

Filed March 31, 1938 5 sheets-sheet 4 May 30, 1939. B, GOERG 2,160,803

HEATING APPARATUS Filed March 3l, 1938 5 Sheets-Sheet 5 flf/ y 'A oRNEY Patented May 30, 1939 PATENT OFFICE HEATING APPARATUS Bernard Goerg, Scarsdale, N. Y., assigner, by mesne assignments, to American Radiator & Standard Sanitary Corporation, New York, N. Y., a corporation of Delaware Application March 31, 1938, Serial No. 199,179

19 Claims.

My invention relates to heating apparatus, and more particularly to a supporting base construction forl use with Stoker-fired boilers. n

The invention consists inthe novel construction 5 and combination of parts, to be more fully described hereinafter, and the novelty of which will be particularly pointed out and distinctly claimed. l

In the accompanying drawings, to be taken as a part ofthis specication, I have fully and clearly illustrated two preferred embodiments of my invention, in which drawings:

Fig. l is a perspective View illustrating one preferred embodiment of a Stoker-fired boiler furnace lconstructed in accordance with my invention; Y

Fig. 24 is an enlarged transverse vertical sectional view taken on the lineA Z-2 oi Fig. l;

Fig. 3 is a longitudinal vertical sectional View taken on the line .3-3 of Fig. 1,r with the stoker retort and the ceramic.V refractory surrounding the retort remcvedin order to ,showY the base constructionmore clearly; y Y

Fig. 4 is a fragmentary. vertical section on the line Cle-l of Fig. 3; l

Fig. 5 is an enlarged detail perspective View Y showing the assembled supporting base construction of. the preceding viewsas a separate unit detached from the boiler; i

Fig.'6is a View similar to Fig.. 5 and showing the base construction of the preceding views as changed for use with a vlarger Vsize boiler;

Fig. l is a diagrammatic lView* illustratingthe lower part of one side of afurnaceunitadapted for stoker firing; 1the base being shown asmodified for use with a minimumsiZe of boiler;

Fig. 8 is a View similar to Fig. l and showing a boiler and base construction larger in size than that shown in Figs. l to 5 inclusive and smaller than that shown in Fig. 6; Fig. 9 is' a perspective View similar to 1 and showing ar modified form of Stoker-dread boiler furnace constructed in accordance with the present invention; l 'f Fig.` l0 is a vertical longitudinal sectional view showing the boiler of lFig. 9 in vertical section and a modified forni of supporting base unit in side elevation with .the Stoker omitted, the general plane o-f the section being indicated by the line ill-IS of Fig. 9;

Fig. 1l is an enlarged detail perspective View showing the modified forni of assembled base unit which appears in Fig. l0;

Fig. l2 is a side; elevation of the assembled base unit of Fig. 1l and illustrating the manner in which the'size of the unit may be readily changed i for use with larger size boilers;

Fig. 13 is a fragmentary side elevation of that side of the base unit of Fig. 11, which isl opposite to the opening used for receiving the fuel feed tube of the Stoker; and

Fig. 14 is a side elevational view similar to Fig. 12 and illustrating a modified form of yoke construction which provides the opening' in the side of the base for receiving the fuel feed tube of the stoker, the yoke construction being the same as that which is shown with the base illustrated in Figs. 1 to 8 inclusive.

Referring now in detail to the construction illustratedV and first to the embodiment of my invention which is illustrated in Figs. l tov 8 inclusive, the reference numeral I0 indicates in general, a Stoker-fired boiler furnace which comprises a vertical sectional boiler II, a fabricated unitary supporting base I2 upon which the boiler is supported, a mechanically operated coal Stoker I3,'and a sheet metal jacket I4 surrounding the boiler I I and separated therefrom by one or more layers of heat insulating material I5.

In so far as the broader aspects of my invenf tion are concerned, the boiler II may be of any suitable construction and may be filled with any desired heating duid. In Figs. l, 2 and 3, I have disclosed a steam boiler of the vertical sectional type which comprises a front cast-metal hollow section I 8, a rear cast-metal hollow section I9, and a plurality of intermediate cast-metal hollow sections 20. I have chosen to show a boiler having three intermediate sections but it will be readily appreciated that the number of intermediate sections used will vary, depending upon the required size or length of the boiler.

The boiler sections I8, I9 and 20 are arranged in vertical side-by-side relation and the hollow interior spaces of the several sections are communicatively connected at their tops and bottoms, respectively, by the usual nipple connections 2i and 22. As is well known, the hollow interior spaces of the boiler contain the heating fluid, which in thel embodiment shown, is steam and water, and the nipple connections provide. for communication between sections and thus assure collection of the steam from all of the sections and circulation of the water between sections. ,The several sections are rigidly 'held in their assembled relation by the nipple connections 2l and 22 and by the usual tie rods 23.

As is well known, the boiler sections are so formed as to provid-e a combustion chamber v24 open at the bottom and connectedl at its tonwith one end of a plurality of connected flue or gas passes 25, through which the combustion gases flo-w serially from the chamber to the usual smoke outlet box 26. The box 23 is shown as being located at the rear and top of the furnace, and is adapted to be connected in the usual manner to a chimney (not shown) As will appear more fully hereinafter, the boiler II operates efliciently when red by a mechanically operated coal stoker. However, it is of interest to note that the particular boiler shown is also so constructed that it may be fired by a number of other types of fuel burning equipment. For example, the burner II may be fired by a gun type oil boiler (not shown). For this reason, the rear boiler section I9 is provided with an opening 28 in the center and lower part thereof, through which the burner may extend. In the Stoker-fired installation in which the present invention is embodied, this opening 28 is shown as being closed by a cast-metal plate 29. Also, the boiler II is so constructed that it may be fired by an oil burner of the wall-flame type, if desired. To this end, the sides of the several sections of the boiler are provided with spaced inwardly-projecting ledge portions 36 which are adapted to support the usual hearth and ring of the wall-flame burner (not shown).

The lower front part of the front section I3 of the boiler II is here shown as being closed by a cast-metal front frame 32 which is bolted to the front section I8, and which is provided with an opening 33, and a door 34, closing the opening 33 for the purpose of inspecting the condition of the fire in the combustion chamber, and also for the purpose of removing clinkers', ash, etc., from the retorts of certain types of stokers. The lower part of the frame 32 is provided with an opening 35 which is closed by a detachable plate 36, and the purpose of the latter opening is to adapt the furnace for. frontV firing by a guntype oil burner or forreceiving parts of a stoke in some types of installations.

The upper part of the front boiler section I8 is provided with openings 31 whichare aligned, respectively, with the ue or gas passes 25 and are adapted to be closed by suitable clean-out doors 38. The openings 31`and doors 38 provide access to the gas or flue passes 25 for the purpose of removing soot, fly ash, etc., as is well known. Access may be had both to the inspection door 34, and to the clean-out doors 38 by means of a pair of doors 40 provided in the upper front'p'art of the enclosing jacket I4.

In so far as the present invention is concerned, the stoker I 3 may be any one of a variety of types. I have shown here a conventional type of stoker comprising the usual retort or fire pot 42 arranged at the lower end of the combustion chamber 24 and centrally within the space defined by the upright'walls of the fabricated base unit I2.

As is usual, the stoker I3 also comprises a fuel feed tube 43 which has a rotary feed screw 44 mounted therein, an-d extends from the lower end of the retort 42 outwardly through an opening provided in the base unit I2. The usual operating mechanism for the screw 44 is arranged exteriorly of the furnace and is enclosed withinV a suitable casing 45 connected to the outer end of the feed tube. Any suitable type of fuel; for example, coal, may be supplied to the outer end of the tube 43 from a fuel hopper .'46. The construction and operation of this type of stoker is Well known to those skilled in the art. The screw 44 rotates within the feedtube 43 and feeds the coal from the bottom of the hopper 46 lengthwise of the tube and into the bottom of the retort 42 and thence upwardly through the retort. As the coal is fed upwardly through the retort, it becomes heated and ignited and is burned. Air for supporting combustion is supplied to the retort by a second tube 41 of the same size as and arranged parallel to the tube 43 and also extending through the opening in the side of the base I2.

Surrounding the retort 42, is a layer of refractory material of any suitable type; for example, grouting 48 which may be formed of small pieces of brick, cinders, or the like, with the spaces between particles lled with cement, and over the top of this grouting and around the upper end of the retort is provided a annular hearth 43 suitably formed by a layer 50 of refractory cement. It will be appreciated that the type of refractory material surrounding the retort and the shape of the hearth may vary with the type of stoker and the size and design of the boiler.

Itis important to note that one of the principal problems in Stoker-fired boiler installations is the provision of one or more openingsY in the side of the supporting base which are of suicient height and breadth for accommodating those parts of the Stoker which connect the retort inside of the furnace with the fuel supply and operating mechanism located outside of the confines of the furnace. The size requirements of these connecting stoker parts, such as the fuel tube 43 and the air supply tube 41, vary with the type of stoker selected and the number of connesting parts required. In some types of stokers, one or more additional connecting tubes may be required; for example, an additional tube may be required for removing the ash from the furnace, and this ash tube may extend through the same opening in the base as the fuel feed and air supply tubes; or it may extend through another opening in another side of the base. In other types of stokers, the fuel may be fed through one connecting tube from a bin located at one side of the furnace and the operating and air supply mechanism for the Stoker may be located at the other side and connected to the feed tube and retort by additional tubes.

Another essential requirement for all types of Stoker-fired boiler furnaces is that the base for the boiler should be secured together to form a rigid unit so that the boiler will be assured at all times of a secure setting. Rigidity of the base is particularly essential when the boiler is being assembled. A further problem to be considered is that the size of the boiler varies with the requirements of the particular installation. Therefore, the base must be capable of being readily adapted to different size boilers.

As will appear more fully hereinafter, I have provided an improved form of base construction for Stoker-fired boilers, which satisfies all of the above-mentioned requirements as to its ready adaptation to the various types or stokers, and also one which provides a rigid and secure setting for the boiler supported thereby, and one whose size may be readily varied to suit the particular boiler with which it is installed. As stated, the base construction is preferably formed as a rigid fabricated unit I2, which supports at its upper edges, respectively, the front, rear and sides of the boiler II, and which may be readily provided with the required number of openings in its upright sides for receiving the `stoker parts connecting the retort inside of the furnace with the other stoker parts located outside of the furnace.

The base unit l2 is shown in perspective in Fig. 5 as being rectangular in shape. and comprising an upright front wall element 52 formed as a one-piece integral casting, and extending across and beneath the front of the boiler Il and here shown as supporting the front castrnetal frame 32 (see also Fig. 3). The base unit l2 also comprises an, upright rear wall element 53 formed as a one-piece' integral casting and extending across and beneath the rear of the boiler` and supporting on its upper surface the rear boiler section i9. Connecting the front and rear walls 52 and 53 are a pair of upright side walls 54 and 55, which extend beneath and support the two opposite sides, respectively, of the boiler and which are detachably secured at their ends, respectively,l to the two sets of adjacent ends of the front and rear walls 52 and 53. y

The connecting side wall 54 is here shown'as comprising a pair of cast-metal panel sections 56 and 51 secured together in end-to-end relation by a bolt 58, and detachably secured at their outer ends, respectively, to the adjacent` ends ofv the front and rear walls 52' and 53 by bolts 55 and 88. The panel sections 56 and 51 are of the same height as the front and rear wall elements 52 and 53. lThe side wall 54 also comprises a cast-metal panel section 52 which is supported by and extends along the upper surface of the panels 55 and 51 and between the rear boiler section I9 and the front frame 32. It will be noted that the front boiler section i8 and the intermediate boiler sections 20 do not extend down as far as the front frame'SZ rand rear section 1S, the latter extending down and resting directly on the front and rear walls 52 and 53, respectively, for a reasony which will be explained more fully hereinafter.

Thus, the panel 52 serves to close the rectangular space defined by the'lower under surfaces of the front and intermediate boiler sections i8 and 28, the upper surfaces ofthe panelsy 58 and 51, the inside surface of the lower end of the front frame 32 and the inside surface of the lower end of the rear boiler section I9. The ends of the panel 62 are detachablysecured to the frame 32 and rear boiler section I9 by bolts 63 and 54,

respectively. Y

The connecting side wall 55 is shown as being provided withv an opening 61 extending therethrough and adapted to receive the fuel feed tube 43 and air supply tube 41. comprises a yoke construction'y 68 defining the major portion of the opening 51 and secured at one side to the adjacent end of the rear ywall 53 and to the lower part of the rear boiler section I9 by bolts 69 and 1l), respectively, andat its other side to a pair or set of panel elements 1| andy 12 by bolts 13 and 14 respectively; the latter panel elements being in turn connected to the adjacent lower endof the frame 32 and front wall 52 by boltsv 15 vand 16, respectively. lThe panel 12 is of the same height as` the front and rear walls 52 and 53 andas the panels 55 and 51, and the panel 1l is the same height as the panel 52. The yoke 58 extends for the full height of the wall 55 so as to provide the maximum height of opening 61 for the stoker parts and the yoke is of suflicient width to accommodate two or more stoker connecting tubes, if necessary. As shown in Fig. 2,after the feed tube 43 is installed, the surrounding parts of the opening not occupied by the-tube .is .closed The wall 55 by a plate 18 secured to the outside of the jacket --The yoke 68 is here shown as comprising a single wrought metal strap bent to form three sides of the opening 61 and with the two ends of the strap at the fourth side. Functionally considered, the yoke comprises upper and lower tie elements 19 and 80 defining respectively, the upper and lower sides of the opening 61, and upright'endl attachingv elements 8l, 82 and 58 for securing the ends of the tie elements 19 and to adjacent parts of the base unit. As shown, the element 8l forms one vertical side of opening .51 and the elements 82 and 83 are the two ends of the' strap and are at the opposite vertical side ofthe opening 51. The elements 82 and 83 extend downwardly and upwardly, respectively, from the ends of the tie elements 19 and 88, as shown. Thus, the yoke provides the maximum height of opening Vfor stoker parts in a base of a given height, and at the same time securely ties together the adjacent parts of the base.

From the above, it will be apparent that I have produced a rigid fabricated base unit which provides a secure setting for the boiler ll. All of the parts are secured together to form the rigid unit by'the several bolts. The base shown is for la particular size of boiler with the stoker connecting parts extending through an opening in the right-hand connecting side wall 55, as viewed from the vfront of the boiler. If, instead, it is desired that the stoker be connected through the connecting side wall at the left, the walls 54 and 55 can be readily substituted one for the other. Also, if it is desired that the fuel be fed in from one side of the boiler and the operating and air supply mechanism for the stoker be located at the other, another side connecting wall, constructed the same as the wall 55, can be readily substituted for the connecting' side wall 54. This latter arrangement can also be provided in case it is desired to provide an ash Yremoval tube -(not shown) at the side of the furnace oppositeA to the fuel hopper.

I have shown in Figs. 1 to 5 inclusive, a base suitable for a boiler of a certain size. .Y In the type of boiler shown, its size or capacity can be changed by adding or subtracting intermediate boiler sections 25, and thereby varying the length of theboiler. The boiler shown comprises three intermediate'sections andthe length of the side Vcormecting walls 54 and 55 is suitable for that length boiler. side connecting walls 54 and 55 of the base will be made correspondingly longer or shorter. The length'of the front and rear walls 52 and 53 will remain the same for all sizes of vertical sectional boilers as the. width of such boilers does not vary.

In the base construction shown, the length of the vside connecting walls 54 and 55 can be readily varied to suit the particular boiler with which-it is installed. In Fig. 6 of the drawings, Lhave shown howv the length of these side conlnecting walls can be readily increased with little In a longer or shorter boiler, thev by the bolts 65 and 10 to the element 8| of the yoke and at its other side to the rear section I9 and rear wall 53 by similar bolts (not shown). In Fig. 6, the other side wall 54 has also been increased in its length `by an amount required for the two additional intermediate boiler sections. rIhe panel 51 of Fig. 5 is also used in the wall 55 of Fig. 6; but instead of the panel 56, a longer panel 88 has been substituted. Also a correspondingly longer panel 89 has been substituted for the panel 62 of Fig. 5.

In each of the base constructions shown in Fig. 5 and Fig. 6, the bolts which secure the partis ci the wall 55 together and tothe front and rear walls 52 and 53, frame 32 and section I9 are all horizontally arranged. In Fig. 6, the bolts used for connecting the front wall 52, panel 12, yoke 53, panel and rear wall 53 are all aligned. Similarly, the bolts securing the frame 52, panel "IE, yoke 68, panel 85 and rear boiler section I5 are also horizontally aligned. It will be appreciated that this construction and arrangement of panels and securing bolts makes possible the fact that the length of the side wall 55 may be readily varied to accommodate boil-p ers of any desired length. On account of this arrangement of securing bolts and the Vopen-- ings in the parts through which the bolts extend, either the set of panels II and 12, or the set of panels 85 and 86, or both sets, may be omitted and the yoke bolted directly to the adjacent end of the wall 52 or 53; or, if desired, either the setA of panels 1I and 12 or the set of panels 85 and 86 may be replaced Vby other sets of panels of different breadth.

In Fig. '7 of the drawings, I have shown diagrammatically one side of a base construction modied for a minimum length of vertical sectional boiler. In Fig. '7, the side 55 of the base is shown. It will be noted that there are no sets ci panels in the wall 55, and the upright securing element 8| of the yoke 68 is secured directly to the rear wall 53 and rear section I9 as in Fi-g. 4, and the securing elements 82 and 83 are secured directly to the front frame 32 and front wall 52, respectively.

In Fig. 8, the base shown is for a longer boiler than the base of Fig. 5 and for a shorter boiler than the base or" Fig. 6. The side wall 55 of Fig. i'coinprises the set of panels 'II and 'I2 and the same yoke 58 of the preceding views and includes in addition, a set of panels 92 and 93 of the same size as the set of panels 1I and 'I2 of Figs. 5 and 6.

In Figs. 7 and 8, the side connecting wall, not shown, which is opposite to the wall 55, may be formed in the same manner as the wall 55, or, such side wall, not shown, may be formed in the same manner as the corresponding side Walls 54 of Figs. 5 and 5; i. e., with an upper panel of proper length for ythe boiler supported, which is similar to the panels 52 Yand 58, and with a pair of lower panels, one of which may be the same as the panel 5? and the other of which corresponds to the lower panels 55 and 88 of Figs. 5 and 6 and varies in length with the boiler supported.

The provision of upper and lower sets of panels in the side wall 54 Vand the upper and lower panels in the side wall 55 is made necessary on account of the particular construction of the boiler II, shown in Figs. 1 to 4 inclusive, in which we have elected toi embody our invention. As stated previously, the boiler Il is so constructed that it maybe also used Vwith other .boiler section I 9.

types of ring equipment. When the boiler II is used for oil ring or hand firing, the front and rear walls 52 and 53 of the base are omitted and the frame 32 and rear section I9 rest directly on the basement foundation prepared for the boiler. The several lower panels 12, 86, 93, 88 and 51 and the yoke 68 are omitted and the panel 62 or a similar panel is provided at each side of the boiler -or closing the rectangular space between the under surfaces of the front and intermediate boiler sections and the basement foundation, and between the lower part of the front frame 32 and the lower part of the rear As explained, when the boiler II is used for `Stoker ring, this rectangular space is not usually of sufficient height to ac-v commodate the fuel, air, and ash tubes in the sides of the base, so therefore, the front and rear walls 52 and 53, and the several lower panels of the walls 55 and 55 are provided which increase the height of the boiler the required amount. The opening 6'! extends for the full height of the base. The yoke 68 advantageously provides the necessary size of opening 61 and the front and rear walls 52 and 53 and the several lower pan'- els form what may be termed a sub base which provides the required height of base.

It might be noted at this point that in certain Stoker-red installations, it might be desired that one or morerof the stoker connecting tubes extend through the front of the furnace. In such a casefthe connecting stoker tube or tubes may be inserted through the opening 35, an opening of the requiredV size may be provided in the plate 35 for this purpose. It is alsoV to b-e noted that certain stokers do not require a high base opening, such as is provided by the yoke 68. In the latter case, members 52., 53, l2, 86, 88'and 5l can be omitted and only members 1I, 85 and 88 used. The element 8l of the yoke 68 can be cut at the point indicated at A and only the top hali` of the yoke used to tie together the panels Il and 85 and the lower parts of the frame 32 and the rear section I9. In other words, the sub-base may be omitted and the frame 32 and rear section I9 made to rest directly on the basement foundation as described above in connection with an oil-fired installation. As the jacket I4 rests on the sub-base in Figs. 2 and 3,

.it can then rest on the floor without additional fabricated base unit as incorporated in a modied i.

form of boiler furnace lila. The boiler furnace comprises a vertical sectional boiler i Ia, a fabricated rigidl base unit I2a upon which the boiler is supported, and a mechanically operated stoker I3a of the same type as that previously described. The rear and-sides of the boiler are enclosed in a sheet-metal jacket Illa of suitable design. The front of the boiler forms the front of the furnace lila. A door 34a. provides for inspection of the re and removal of clinker and ashes, and a door 38a for,v the removal of soot from the ilue passages. 5

The boiler IIa comprises a hollow cast-metal front section I8a., a hollow cast-metal rear section I9a and hollow cast-metal intermediate sections 26a and 28h. It will beV observed that the width oi the intermediate section 28h is onehalf of the width of each of the intermediate sections Zilla.4 The reason forthis is to provide for a wide flexibility in boiler sizes. For example;

the next larger size of boiler from that shown in Fig. 10, would be one havi-ng three full size intermediate sections 20aI and no small size sections 20D, and the next smaller size of boiler would be one having only two full size intermediate sections 20a. In other words, the half section 20h provides for a size of boiler in between boilers composed of only full size intermediate sections.

In the boiler shown, the sections |8a, |9a, Zila and 2Gb are arranged in vertical side-by-side relation, as in the previously described modiiication, and the hollow interior spaces of the several sections are joined, as before, by nipple connections 2|a at the top and by the usual nipple connections (not shown) at the bottom, which nipple connections provide for the accumulation of steam from allsections and for the circulation of water between sections. The rear section |9a of the boiler terminates at its lower ends at substantially the same level as the front section |8a and intermediate sections 20a and ZElb. The several sections of the boiler are so formed as to provide a combustion chamber 24a open at the lower end thereof, and a series of connectedvflue passages 25a which receive at one end the gaseous products of combustion from the chamber 24a and discharge such combustion gases at therother end into a conventional smoke pipe 26a.

The stoker |3a is of the same construction as the stoker I3 described p-reviously. Although I have not actually shown in this modification the retort inside of thefurnace, it will be appreciated that the retort will be arranged centrally within the base unit |2a and in open communication with the combustion chamber 24a, the same as the retort 42 of the previously described construction. It is important to note that the problems outlined previously in connection with the installation requirements of various' types of stokers, and the requirements of different sizes of boilers, are solved by the rigid fabricated base unit |2a of this modication, the same as the unit I2 previously described.

In Figs. 9 to`13 inclusive, the rigid fabricated base unit |2a is shown as being constructed in the form of a rectangle and as comprising an upright front wall 52a, an upright rear wall 53a and upright side connecting walls 54a, and 55a; arranged, respectively, at opposite sides of the furnace and detachably secured at their ends to the adjacent ends of the front wall 52a and rear wall 53a. In the construction shown, the front boiler section |8a is supported by the front wall 52a and by the directly adjacent portions of the side walls 54a and 55a. The rear boiler section |9a is supported by the rear wall 53a and also the directly adjacent parts of the side connecting walls 54a and 55a, and the intermediate sections 2da and 20h are supported by the intermediate portions of the side connecting walls 54a and 55a respectively.

In Fig. 9 of the drawings, I have shown the fuel feed tube 43a and air supply tube 41a of the Stoker |3a as entering the base of the furnace at the right hand side, as viewed from the front thereof, the same as the feed tube 43 and air tube 4l of thepreviously described modification. It will be appreciated as the description proceeds, that the modied rform of bas-e unit |2a is so constructed that, if desired, the required feed tube 43a and air tube 41a may be inserted through l any one of four walls of the base. Also, the base unit |2a is so constructed that it can be readily adapted for installations where the stoker operating mechanism is located at either one of the four sides of the furnace and the feed and air tubes or other connecting stoker parts may be located at either of the remaining three sides.

In Fig. 11, the base unit is shown in perspective, and it will be observed that an opening Ela for receiving one or more connecting stoker parts is provided in each side connecting wall 54a and 55d and in the rear wall 53a. It will also be noted that I have provided the usual opening 35a inthe front wall 52a, which is closed by a door lili. The opening 35a may also be used for the reception of stoker connecting parts, if desired. In the latter case, the door will be removed and a plate (not shown) with an opening large enough to receive the Stoker part substituted for the door HBD.

'Ihe front wall 52a is shown as comprising an integral casting extending across and beneath the front of the furnace and attached at its ends by bolts to the adjacent ends of the two side connecting walls 5ta and 55a, respectively. The rear wall 53a comprises a pair of cast-metal corner members m6 and |01 and a pair of yoke members Hi8 Yand |09 arranged in opposed relation to one another and dening the upper and lower sides of the opening 61a through the rear wall. The yoke member |08 is formed as a onepiece casting and comprises a longitudinallyextending upper tie member ||0, and a pair of vupright end attaching elements bolted, respectively, to the corner members |05 and |01. Similarly, the lower yoke member |09 is formed as a one-piece casting and comprises a lower tie element ||2, and a pair ofv end attaching elements l I3 bolted, respectively, to the corner members |95 and |01. The other sides of the corner members are secured respectively to the adjacent ends-of the walls 54a and 55a by bolts I5. It is to be noted at this point that as the boiler Ila is of the vertical sectional type, provision need not be made for varying the length of the front and rear walls, the variations in sizes of this type of boiler being provided by varying the length of the boiler and not by varying its width.

The side connecting wall 54a shown in Fig. 11, comprises a pair of opposed upper and lower yoke members |20 and |2| defining, respectively, the upper and lower sides of the opening 61a therein, and a pair of upright panel members |22 and |23 arranged, respectively, between the two ends of the yoke members and the adjacent ends of the front and rear walls 52a and 53a respectively. The upper yoke member |20 is formed as a onepiece casting and comprises an upper tie element |24 and a pair of upright end attaching elements |25 bolted, respectively, to the adjacent sides of the panel members |22 and |23. Similarly, the lower yoke member |2| is in the form of a onepiece casting and comprises a lower tie element |21 and upright end attaching elements |28 bolted respectively, to the panel members |22 and |23. The sides of the panel members |22 and |23 which are opposite the yoke members are bolted, respectively, to the ends of the front and rear walls 52a and 53a.

The remaining side connecting wall 55a also comprises a pair of opposed upper and lower yoke members |30 and |3| dening, respectively, the upper and lower sides of the opening Gla therein, and a pair of panel vmembers |32 and |33, arranged, respectively, at the ends of the yoke members and between the latter and the adjacent ends of the front and rear walls 52a and 53a.

The upper yoke member |30 is also formed as an integral casting and comprises a longitudinallyextending upper tie element |34 and a pair of upright end attaching elements |35 bolted respectively to the adjacent sides of the panel members |32 and |33. The lower yoke member |3| is also formed as. an integral casting and comprises of a longitudinally-extending tie element |36 and a pair of end attaching elements |31 bolted, respectively, to the adjacent sides of the panel members |32 and |33. The sides of the panel members |32 and |33 which are opposite the ends of the yoke members are secured, respectively to the adjacent ends of the front and rear walls by the bolts |05 and H5.

It is of interest to note that the construction and arrangement of the side walls 54a and 55a are identically the same, and that the yoke members |08, |09, |20, |2|, |30, and |3| are also of the some construction and size. The base unit |2a shown in Fig. 11 is of a size suitable for supporting the boiler unit of Fig. 10; that is, a boiler unit having two full size intermediate sections 20a and one half size intermediate section 2Gb. As in the previously described modification, provision is made for lengthening the side connecting walls Elia and 55a so as to support boilers having a larger number of intermediate sections, and for shortening the side connecting walls 54d and 55a so as to support boilers having a fewer number of intermediate sections. Each of the panel members |22, |23, |32 and |33 in the two side connecting walls of Fig. 11 is of a size corresponding to a half size intermediate section 2Gb of the boiler. Therefore, if it is desired to support a boiler having only two full size intermediate sections 20a and no half size intermediate sections 20h, one of the panels will be omitted from each side connecting wall 54a and 55a and the base unit |2a thus formed will be of a proper size to support such a boiler. On the other hand, if it is desired to support a boiler having one full size intermediate section 20a and one half size intermediate section 2Gb, then, both of the panels of each connecting side wall will be omitted and the yoke members |20, |2|, |30 and |3| of the side walls will be bolted directly to the adjacent ends of the front wall 52a and the rear wall 53a; the several connecting bolts and the holes through which they extend being so arranged that such connection can readily be made.

If it is desired to support a longer boiler than that shown in Fig. 10, then a panel section will be provided in each of the side connecting walls which is longer than those shown in Figs. 10 and 1l. For example; in Fig. 12, I have shown in side elevation, a side connecting wall 55a having a larger panel member |40 occupying the space of the panel |33 of Figs. 10 and 11. Ihe panel |30 is of a size corresponding to a full size intermediate section Zila. It will be appreciated that the other side connecting wall (not shown) of Fig. 1.2 will have a panel similar in size to thepanel Mil. From the above, it will be apparent that the length of the side connecting walls 54a and 55a of the base unit |2a may be readily changed by adding, subtracting and substituting panel members of different sizes, so as to support a variety of sizes of boilers.

As stated previously, I have shown in Figs. 9, 10 and l1, a base unit supporting a boiler furnace wherein a Stoker having a fuel-feed tube 43a and an air tube lla is used. The tubes 33a and Ma are shown as extending through the opening Ela. in the side connecting wall 55a, and the parts of the opening not occupied by the tube are closed by a plate 18a secured to the outer side wall of the jacket Ma (see Fig. 9). Also, I have described above a base unit |2a having an opening 01a in the side connecting wall Ea and a similar opening 31a in the rear wall 53a, and have described a front wall 52a having a door-closed opening 35a. These additional openings 37a and 35a are provided so that the base unit may be readily `adapted for use with a variety of types of stokers and installations wherein the stoker may be located at another side of the boiler from that shown or wherein one or more additional Stoker connecting parts or tubes may be used. If the front wall opening 35a is not used, it may be closed by the door |00, as stated before. If the openings 61a in the other side connecting wall 54a and in the rear wall 53a are not used, they may be closed by sheet metal plates suitably bolted to the yoke members dening the respec` tive openings. In Fig. 13, I have shown a fragmentary side elevation of the side connecting wall 5130. with the plate |45 bolted thereto.

It will be observed that each of the pairs of yoke members defining the several openings through theV two side connecting walls 54a and 55a and the rear wall 53a are formed as one-piece` castings. If desired, a yoke member of the type shown in Figs. l to 8 inclusive, might be used in Y the base unit |2a instead of the cast-metal yokes shown. As an example, I have shown in Fig. 14, a side elevation of the base unit |2a wherein a yoke 68a formed from a single strap of wrought metal, is used. As shown, the strap is bent to form an upper tie member 13a, a lower tie memf ber 80a and end attaching element 8|a at one side and a pair of end attaching elements 82a and 33aV at the other side. The end attaching element Sla is secured to the adjacent panel meni-l ber |33'by the bolts |5| and the end attaching elements 82 and 83 are secured to the panel member |32 by bolts |52.

What I claim and desire to secure by Letters Patent of the United States is as follows:

l. A fabricated supporting base for stoker-rerl boilers comprising a front wall member; a rear wall member; and a connecting side wall member extending between and connected to the front and rear wall members; said connecting side wall member having an opening therein adapted to receive parts of a stoker, and said side wall member including separable upright panel elements and a U-shaped yoke member arranged with the base of the U extending lengthwise of the wallv and defining one side of the opening and with the legs of the U arranged upright at opposite sides of the opening and detachably secured to adjacent wall parts.

2. A fabricated supporting base for stokerred boilers comprising a front wall member; a rear wall member; and a connecting side wall member extending between and connected to the front and rear wall members; said connecting side wall member having an opening therein adapted to receive parts of a Stoker, and said side wall member including a U-shaped yoke member arranged with the base of the U extending lengthwise of the wall and dening one side of the opening, and with the legs of the U at opposite sides of the opening, and a pair of up` right panels disposed respectively between the legs of the U and the front and rear wall members; and means for detachably securing the panels to the legs of the U and to the front and rear wall members.

Iii)

3. A fabricated supporting base for stokerilred boilers `comprising an upright front side member having an opening therethrough and a closure member for said opening, and a plurality of additional upright side members so arranged with respect to one another and to said front side member as to define a hollow interior space adapted to receive a stoker part; means for securing the adjacent parts of said side members together Ato provide a rigid base structure adapted to support a boiler upon its upper surfaces; one of said additional side members including yoke means rdefining an opening therethrough adapted to receive parts of a stoker; said yoke means including top and bottom elements deiining the upper and lower sides of said stoker opening and upright end securing elements at the endsof said top and bottom elements; and means for detachably securing said upright end secury ing elements to the adjacent upright parts of said base.

4.7A fabricated supporting base for Stokerviired boilers comprising an upright front side member having an opening therethrough and a closure member for said opening, and a plurality of additional upright side members soarranged with respect to one another and to said front side member as to dene a -hollow interior space adapted to receive a stokery part; means for securing the adjacent parts of said side members together to provide a rigid base structure adapted to support aboiler upon rits upper surfaces; one of lsaid additional side members including yoke means defining an'opening therethrough adapted to receive parts of a stoker; said said yoke means including top and bottom elements defining the upper and lower sides of said s toker opening and upright end securingA elements at the ends of said top and bottom elements; said one additional side member also including an upright panel arranged between one upright end element of said yoke means and the adjacent one ci said upright side members; and

meansfor detachably securing said panel at one side thereof to said adjacent one of the side members and at the other side thereof to said adjacent one of the end securing elements of said yoke means. v

5. A fabricated supporting base for stokerred boilers comprising an upright front side member having an opening therethrough and a closure member for said opening, and a plurality of additional upright side members so arranged with respect to one another and to said front side member as to define a hollow interior space adapted to receive a stoker; means for securing the adjacent parts of said side members together to provide a rigid base structure adapted to support a boiler upon its upper surfaces; one of said additional side members including yoke means defining an opening therethrough adapted to receive parts of a stoker; said yoke means including tcp and bottom elements dening the upper ,and lower sides of said stoker opening and upright andv securing elements at the ends of said top and bottom elements; said one additional side member also including an upright panel arranged between one upright end element of said yoke and the adjacent one of said side members; and means for detachably securing said panel at one side thereof to said adjacent side member and at the other side thereof to an adjacent upright end element of said yoke means; said last-named securing means being so constructed and arranged that said panel may be 6. A fabricated supporting base for Stoker--` fired boilers of varying sizes comprising a plurality of upright "side members arranged to dene an enclosed space therebetween adapted to receive Stoker parts, and having their adjacent ends secured together to provide a rigid unit upon which the sides of they boiler are adapted to be supported; two of said side members extending in the same general direction and being arranged at opposite sides of the space and being composed of detachably secured upright panel parts which are adapted to be removed so as to vary the length dimension of said side members and adapt the base for supporting boilers of diiferent di` mensions measured in the direction of extent of said two side members; at least one of said two side members having an opening therethrough for receiving parts of a Stoker, the upper and lower sides of said opening being defined respectively by upper and lower tie elements extending in the direction of extent of said oney side member and detachably secured at their opposite ends to the adjacent parts ofsaid base.

'7. A fabricated supporting base for Stokerred boilers comprising a plurality 01 upright side members arranged to dene an enclosed space therebetween which is adapted to receive stoker parts and the side members having their adjacent ends secured together to provide a rigid unit upon which the sides of the boiler are adapted to be supported;` two of said side members extending in the same general direction and being arranged at opposite sides of the enclosed space and each having respectively an opening therein disposed opposite to the opening in the opposite side member; the opening in at least one of said two side members being adapted to receive Stoker parts and being dened at its upper and lower sides respectively by upper and lower tie members extending lengthwise in the direction of extent of said one side member anddetachably secured at their opposite ends to adjacent parts of said base.

8. A fabricated supporting base for Stoker-fired boilers comprising a plurality of upright side' to provide a rigidv supporting base structure for,

a boiler; one of said side members including yoke `means deining an opening and including top and bottom elements dening respectively the upper and lower sides of said opening, and upright end securing elements; an uprightv detachable panel forming a part of said one side member and arranged between said'yoke means and lthe adjacent end of an adjacent side member; a first bolt for detachably securing one upright side of the panel to an end securing element of said yoke means and arsecond bolt for detachably securing the opposite upright side of the panel to said adjacent end of the adjacent side member; said rst and second bolts and the adjacent parts of the base to which they are secured being so constructed that said panel may be omitted entirely from said one side member and the yoke means secured directly to said adjacent/'side member by one of said bolts. v

9. A fabricated supporting base for Stoker-Tired boilers comprising an upright front side member having an opening therethrough and a closure member for said opening, and a plurality of additional upright side members so arranged with respect to one another and to said front side member as to dene a hollow 'interior space adapted to receive a stoker part; means for securing the adjacent parts of said side members together to provide a rigid base structure adapted to support a boiler upon its upper surfaces; one oi said additional side members including a longitudinally-extending top tie member and a longitudinally-extending bottom tie member dening respectively the upper and lower sides of an opening through said one side member for receiving stcker parts, and an upright side panel structure filling the space between one end of said tie members and the adjacent end of an adjacent upright side member; and means Yfor detachably securing the panel structure at one side to said tie members and at its opposite side to said adjacent end of the adjacent upright side member.

l0. A fabricated supporting base for stokerfired boilers comprising an upright front side member having an opening therethrough and a closure member for said opening, and a plurality of additional upright side members so arranged with respect toI one another and to said iront side member as to dene a hollow interior space adapted to receive a stoker part; means for securing the adjacent parts of said side members together to provide a rigid base structure adapted to support a boiler upon its upper surfaces; one ci said additional side members including a pair ci upright end panel structures secured respectively to the adjacent ends of adjacent side members and a longitudinally-extending top tie member and a longitudinally-extending bottom tie member extending between the adjacent upright sides of said panel structures and defining respectively the upper and lower sides of an opening through said one side member for receiving stoker parts; and means for detachably securing together said adjacent ends of adjacent side members, said panel structures, and said tie members.

1l. A fabricated supporting base for stokerfired boilers and comprising upright front and. rear members spaced apart and supporting respectively the front and rear portions of the boiler, upright side members spaced apart and supporting respectively the sides of the boiler; the side membersV being so arranged that they respectively join together the adjacent ends of the upright front and rear members to define a hollow interior space adapted to receive parts of a stoker; means for securing the adjacent ends of all of the upright members to provide a rigid base unit; one of said side members having an opening therethrough and comprising a longitudinally-extending top tie member and a longitudinally-extending bottom tie member defining respectively the upper and lower sides of such opening, and a side panel filling the space between the adjacent end of the adjacent upright member and the tie members; and means for detachably securing one upright side of the panel member to said tie members and for securing the opposite upright side of said panel member to the adjacent end of said adjacent upright member.

12. AV fabricated supporting base for stokerred boilers comprising a plurality of upright side wall members arranged to dene an enclosed space therebetween adapted to receive stoker parts and the side wall members having their adjacent ends secured together to provide a rigid unit upon which the sides of the boer are adapted to be supported; one of said side wall members having an opening therethrough adapted to receive parts of a stoker and said opening being deiined at its upper and lower sides respectively by upper and lower tie members extending lengthwise in the direction of extent of said one wall member; said one wall member including a pair of upright panels disposed respectively at the opposite ends of said tie members and filling the spaces between the latter and the adjacent wall members; and means for detachably securing together the ends of the tie members, the panels and the adjacent wall members.

13. A fabricated supporting base for stokerred boilers comprising front and rear wall members adapted respectively to support the front and rear sides of the boiler and a pair of connecting side wall members extending respectively between the two sets of adjacent ends of the front and rear wall members and adapted to support respectively the remaining side walls of the boiler; said wall members defining an enclosed space adapted to receive Stoker parts and the wall members having their adjacent ends secured together to provide a rigid-base unit; said rear wall member having an opening therethrough adapted to receive parts of a stoker and comprising a pair of corner members arranged respectively at the ends thereof and to which the adjacent ends of the connecting side wall members are secured, and upper and lower tie members extending lengthwise in the direction of extent of the rear Wall member and defining respectively the upper and lower sides of said opening, the ends of said tie members being detachably secured respectively to the adjacent parts of said corner members.

ifi. A fabricated supporting base for stokerfired boilers of varying sizes comprising front and rear wall members adapted tosupport respectively the front and rear sides of a boiler and a pair of connecting side wall members extending respectively between the two sets of adjacent ends of the front and rear wall members and adapted to support respectively the remaining sides of the boiler; said wall members dening an enclosed space adapted to receive stoker parts and the wall members being secured together at their adjacent ends to define a rigid base unit; said rear wall member having an opening therethrough adapted to receive stoker parts and comprising a pair of corner members arranged respectively at thejends thereof and upper and lower tie members defining respectively the upper and lower sides of said opening and detachably connected at their ends to the corner members; said connecting side wall members being composed of detachably secured upright panel parts which are adapted to be removed and replaced by other panel parts so as to provide for varying the length dimensions of said connecting side wall members and thereby adapt the base for supporting boilers of different dimensions measured in the direction of extent of said connecting side members.

l5. A fabricated supporting base for stokernred boilers comprising front and rear wall members adapted to support respectively the front and rear sides of a boiler and a pair of connecting side wall members extending respectively between the two sets of adjacent ends of the front and rear wall members and adapted to support the remaining sides of the boiler; the wall members deiining an enclosed space for receiving stoker parts and being detachably secured together to provide a rigid base structure; said front wall member having an opening therein and including a closure member for said openling; said rear wall member having an opening ing side wall members extending respectively between the adjacent ends of the front and rear Wall members; said Wall members defining an enclosed space adapted to receive stoker parts and being detachably secured together at their adjacent ends to provide a rigid base structure; said rear wall member and each of said f connecting side wall members having openings therein adapted to receive Stoker parts, and the upper and lower sides of each of said openings being defined respectively by upper and lower tie members detachably secured at their ends to the adjacent parts of the base; and detachable plate members for closing at least two of said openings.

17, A fabricated supporting base for stokerfired boilers comprising a plurality of upright wall members arranged to provide an enclosed space therebetween which is adapted to receive parts of a stoker and the wall members being secured together to form a rigid unit adapted to support a boiler on the upper parts thereof; one of said wall members having an opening extending therethrough and adapted to receive a fuel-feed tube for a stoker, and said one wall member comprising a cast-metal top tie member dening the upper side of said opening and including depending attaching parts at its ends detachably secured to adjacent parts of said base, and a cast-metal bottom tie member defining the lower side of said opening and including upstanding attaching parts at its ends detachably secured to adjacent base parts.

18. A fabricated supporting base for stokerfired boilers comprising a plurality of upright wall members arranged to provide an enclosed space therebetween which is adapted to receive parts of a stoker, and the wall members being secured together to form a rigid base unit adapted to support a boiler on its upper parts; one of said wall members having an opening extending therethrough and adapted to receive a fuel-feed tube for a stoker, and said one wall member comprising a rectangular shaped member formed from a single wrought metal strap including three continuous sides and a fourth side, said strap being arranged with two of its opposed continuous sides forming the top and bottom respectively of the opening and with its other continuous side and its fourth side arranged upright and opposite to one another and being detachably secured to adjacent base parts.

19. A fabricated supporting base for stokerred boilers comprising an upright front side member having an opening therethrough and a closure member for said opening, and a plurality of additional upright side members so arranged with respect to one another and -to said front side member as to deiine a hollow interior space adapted to receive a stoker part; means for securing the adjacent parts of said side members together to provide a rigid base structure adapted to support a boiler upon its upper surfaces; one of said additional side members having an opening therein adapted to receive partsof a stoker, and comprising a yoke; said yoke including a tie element extending lengthwise of said one additional side member and defining one side of said last-named opening and a pair of upright end securing elements at the ends of said tie element; and means for detachably securing said upright end securing elements to the adjacent upright parts of said one additional side member.

BERNARD GOERG.

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