US1326752A - michael liptak - Google Patents

Description

M4/2M; WMM

M. LIPTAK.

FURNACE ARCH FOR BOILERb.

APPLICATION min FEB; 9, 191s.

Mj/Hawkes L 2K. 540% M. LIPTAK.

FURNACE ARCH FOR BOILERS.

APPLlcATloN FlLED FEB. 9, |918.v

Jig. 5.

Patented Dec. 30, 12H9.

2 SHEETS-SHEET 2.

rif-enr j Fries.

remmen-nnen; non serrures.

To all automat may concern.'

Be it known that I, MICHAEL Lrr'rArr, re-

i siding at Minneapolis, in the county of Henllt) nepin and State of Minnesota, have invented certain new and useful improvements in Furnace-Arches for Boilers; and do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled 'in the art to which it appertains to make and use the same.

. My invention has for its object to provide an improved furnace arch for boilers .orl

steam generating plants; and to such ends, generally stated, the invention consists of the novel construction and combinations of parts hereinafter described and defined in the claims.'

The' general nature and purpose of the furnacearches used in the combustion chambers of steam boilers is well known.

My invention provides particularly, an improved arrangement of interlocking arch forming blocks and supporting beams which make the erection of the fire arch, in the iirst instance, an easy matter and which also make it an easy matter to maintain the same by replacement, from time to time, of those blocks or the arch that have been burned away or damaged by the intense heat from t e Yfurnace. This improved tire arch involves as aradicallynew feature, a double' layer arrangement of interlocking blocks so disposed in respect to each other and tothe supporting beams that the blocks that are directly hung on the beams 'are not exposed to the dames, or otherwise stated, blocks exposed to the direct action of the flames are not directly hung on the metal beams but are indirectly hung from hanger blocks' which, iny turn, are hung .from the supporting beams and thereby protected from the flames. The blocks that are directly hung 'fromthe supporting beams are des1gnatked as hanger blocks, while the blocks that are hung from the hanger blocks so that they are at the under surface of the arch and exposed to the direct action of the most intense llames, are. designated as underfacing blocks. There are ample air spaces between the hanger blocks and underfacing blocksand between the hanger blocks and the metal .beams so that the beams will always be kept cool.

The preferred -form of the arch is illustrated in the accompanying drawings where- Specication of Letters Patent. Patented Dec, 30, 1919, .application inea February e, isis serial no. eiaisa.

in like characters indicate'like parte through-l out the several views.

Referringto the drawings,

Figure 1 is a verticalsection taken through the iire box and arch on the line 2--2 of Fig. 2, some parts being' shown in full;

Fig. 2 is a transverse section, the right hand half thereof, being a section on the line 2 2 of F ig. 1, and the left hand half thereof, being a section on the line 2-2 of Fig.. l, and some parts being removed;

Fig. 3 is a perspective view of the arch, some partsy 'being removed and some parts being sectioned; and

Fig. 4 is a transverse vertical section illusvtrating a slightly modilied construction of and front walls of the masonry, and the front ends of the lower dues 6, in accordance with my invention', are constructed as follows:

' The main supporting beams of the arch are, as shown, two in number and they are transversely extended, their ends being embedded in the side "walls of the masonry.

Preferably, the front main supporting beam is'in the form of a steel or iron channel 8 while the innermost or front `main beam is 1n the form of a steel or iron I-beam 9. A

multiplicity of laterally spaced supplemental beams are hung from the lower lano'es of the main beams 8 and 9 and these supp eine-ntal beams 10 are preferably steel 0r iron Lbeams having relatively narrow lian es at their upper edges and relatively wide flanges at their lower edges. To thus hang or suspend the supplemental beams 10 from the main beams Sand 9, I provide said supplemental beams on their upper edge flanges withlongitudinally slidable coupling brackets 11, l2 and .13,which are alike, except that the brackets 11 are longer than the brackets 12 and 13. All of the said brackets are provided at their ends with projecting hanger lugs thatengage over the lower flanges of the adjacent main beams, as shown in Figs. 1 and 3. The hanger'brackets 12 and 13 are alike but are faced in opposite directions. To interlock the said hanger brackets with the. upper iianges of the supplemental beams 10 they are formed with longitudinal T-shaped grooves in their lower faces, and to secure them in working position, as shown, they are preferably provided with suitable set screws 14.

For an important purpose which will hereinafter appear, the supplemental beams 10 are provided at their inner ends with detachable beam tips 10, the ianges of which correspond to the flanges of the said beamsv10, but the upper inner portions of which are preferably cut away on rectangular lines, as best shown in Fig. 3. The narrow upper flanges of the said beam tips 10 are telescoped into the projecting ends of the coupling brackets 11, and rigidly secured thereto by the outer of the set screws thereof.

rlhe brick work of the improved arch is made up preferably of hanger . blocks 15 and 16, underfacing blocks 17, corner facing blocks 18, crowning blocks 19` and usually l more or less filling-in bricks 20, all of which The outer edge blocks 16 are channeled in vone face only, that is, each is substantially one-half of one of the blocks 15 that is made a little wider and is parti embedded in the walls of the masonry, as est shown in Fig. 2. The intervening blocks 17, on their upper sides, are formed with T-shaped flanges that slide into the channels formed by the depending T-shaped portions of the hanger blocks 15- and 16 and interlock therewith and rest upon the lower flanges of the said hanger blocks with freedom, of course, for sliding movements into position and from position. -The said blocks above noted are, of course, plositioned'in close contact. The innermost anger blocks 17 are su ported by the detachable beam tips 10a.. ner facing blocks 18, ,instead of having T- shaped upper end flanges, are formed with T-shaped seats that terminate short of the front ends thereof, but adapt' them to be slid onto the lower flanges of the innermost hanger blocks 17, which latter, as just above noted, are supported by the said beam tips.

i Hence, the said corner blocks are indirectly supported from the said beam tips 10, and the said beam tips are protected from intense heat by said corner blocks as well as b the innermost hanger blocks. In fact, it will be noted that no parts of the metallic supporting beam are exposed to the direct action of Y sharp angles.

weaves the fiames of the furnace. The crowning blocks 19, in vertical section, are L-shaped so that they nt over and rest upon the projecting ends of the innermost hanger blocks 15 and -1d. The space lbetween the tops of the-blocks 19 and the iues, is lled in by ordinary re brick 20. Slight space is left between the corner facing blocks and the crowning blocks, so that the former will be free from the weight of the latter.

The corner facing bricks 18 will be subjected to the most intense heat and will be burned away faster than any of the other blocks, and hence, will require more frequent replacement. Obviously, these corner blocks may be very quickly and easily replaced and without removing any of the other blocks. Moreover, if these blocks should be so badly burned `away that the flames would melt the ends of the beamtips 10, these latter may be also easily cheaply and quickly replaced y by others of like character. Obviously the construction is also such that any or all, for that matter, of the exposed arch blocks may bereplaced. When they are hung, as described, they afford a very eiicient arch and thoroughly protect the metallic supporting beams.

Fig. 4 shows hanger blocks and underfacing blocks of the same general construction as above described, but slightly modified so that sharp angles are avoided in the weaker portions of the blocks. In the said modified construction, Fig. 4, the hangerblocks 15l have rounded upper surfaces and the upper and lower flanges are united to the vertical portions thereof by rounded surfaces that avoid sharp angles. Likewise, the underfacing blocks 17a have their vertical webs `united to the upper flanges and body portions by rounded surfaces which avoid the Sharp angles, as is well known, render the-ianges more liable to be broken olf than where the joining surfaces are rounded.

As is evident, preferably by reference to Figs. 1 and 3, the corner blocks 18 and underfacing blocks 17 may be slid to and from position under the crowning blocks 19.

When the arch is com lets, the metal beams of the arch, as alieady fully described, are not in contact with any arch block that is exposed to the direct action of the ames, and hence, are well protected from the heat. With this double layer arrangement of the blocks in the arch, not only is the life of the arch very greatly increased but replacement of blocksis made an easy matter. The manner in which the undersur of the standard arches made up of a single` layer of blocks. This improved arch will therefore last for a comparatively long time and may be used for: a considerable time `even after the underfacing blocks have been burned away. This'will give plenty of notice in advance that the arch must be soon repaired, and moreover, will usually fmakethe possible life of the arch 'long I blocks and forminga lower layer to be ex,

, enough so that repairs therein will not be necessary except at times when it is necessary to shut down .the boiler for repairs 1n the boiler itself. v

With the customary single layer arch, 'it has been necessary to frequently shut down the boiler and put out the {ire at times when no boiler repairs were necessary and where -the shut down with the result of loss of time,

waste of coal and expense generally, was due solely to repairs required in the fire arch itself.

What I claim is:

1. A fire arch for furnaces comprising hanger blocks supported inv an 'upper layer, and underfacing blocks interlocked` to and detachably hung from said hanger blocks andforming a lower layer to be exposed to the flames'.

2. A fire arch for furnaces comprising hanger blocks supported in an upper layer, and underfacing blocks interlocked to Aand detachably hung from said hanger blocks and forming a lower layer to be exposed kto the flames, the said Vhanger and under- Tfacing blocks having joints that are lapped ,in a vertical direction with air spaces between said blocks in the vicinity of their interlocking joints.

3. .A furnace arch vcomprising laterally spaced beams, hanger blocks slidably hung on said beams and forming an upper layer, and underfacing blocks interlocked with and detachably hung from said hanger posed to the flames. i

4. A furnace arch ycomprising laterally spaced beams, hanger blocks slidably hung on said beams and forming anupper layer, underfacing blocks interlocked with and detachably hung;` from said hanger blocks and forming a lower layer that is exposed to the flames, the inner `members of said hanger blocks being proje'ctedrearward of the inner` ends of said beams, and corner facing blocks detachably hung on the projecting ends of said hangerblocks.

'5. A furnace arch com risin laterally spaced beams, hanger blocs sli ably hung on said beams and forming an upper layer, underfacing blocks interlocked with and detachably hung from said hanger blocks and forming a lower layer thatcis exposed to the flames, the inner-members of said hanger blocks being projected. rearward of the inner' ends of said beams, corner facing blocks detachably hung on. the projecting ends of said hanger-blocks, andan apron wall sup- -ported by theinner ends of said beams, the

joints and permit sliding movements of said lower blocks in respect to said upper blocks. I

7. A furnace arch comprising transverse main hanger beams, laterally spaced supplemental beams underlying said main beams, said supplemental beams having. replaceable end ti s detachably secured to the inner` ends tiereof, hanger blocks slidably interlocked to said supplemental beams and the beamtips thereof, underfa'cing blocks slid'- ably locked to said hanger blocks and. corner facing blocks detachably supported by the innermost of said hanger blocks'. y

8. A furnace arch comprising transverse main hanger beams, laterally spaced supplemental beams underlying said main beams, said supplemental beams having replaceable end tips detachably secured to the inner ends' thereof, hanger blocks slidably interlocked to said supplemental beams and the beam tips. thereof, underfacing blocks slidably lockedto said hanger blocks and corner facing blocks detachably interlocked to the innermost of said'hanger blocks, and approximately L-shaped crowning blocks set over 'saidcorner facing blocks and resting on the innermost of said hanger blocks.

9. The combination with suitably sup portedlaterally spaced hanger beams having replaceable end tips detachably secured f to their inner ends, hangerk blocksslidably hungr on said beams and their replaceable end tips, and underfacingblocks slidably and replaceably hung on said hanger blocks.

10. The combination with suitably suplnloclis constituting a lower layer and having at their upper portions anged necls of reduced width arranged to detachably inter? said beams and constituting an upper layer and underacing blocks detacliably hung 'from said hanger blocks and constituting a lower layer.

18. A furnace comprising parallel supporting beams, hanger blocks hung from said beams, under facing blocks interlocked 'with and hung from said hanger blocks, corner facing blocks interlocked to the end members of said hanger blocks, and crowning blocks applied on the inner members of said hanger blocks, ther'said corner blocks projecting inward of said crowning blocks and serving as flame deiectors to protect said crowning blocks..

In testimony whereof I aiiix my signature in presence of two witnesses. MICHAEL LIPTAK.

Witnesses BERNICE G. BAUMANN, F. D., MERCHANT.

Images