US2457965A

US2457965A - Replaceable furnace arch nose construction

Info

Publication number: US2457965A
Application number: US561081A
Authority: US
Inventors: Young William George
Original assignee: Chicago Fire Brick Co
Current assignee: Chicago Fire Brick Co
Priority date: 1944-10-30
Filing date: 1944-10-30
Publication date: 1949-01-04
Anticipated expiration: 1966-01-04

Description

Jan. 4, 1949. w. G. YOUNG 2,457,965

REPLAOEABLE FURNACE ARCH NOSE-CONSTRUCTION File d oct. 30, 1944 2 Sheets-Sheet 1 Jan. 4, 1949. w, YOUNG 1 2,457,965

REPLACEABLE FURNACE ARCH NOSE CONSTRUCTION Filed Oct. 50, 1944 2 Sheets-Sheet 2 Uz'ZZz'am Geor gejoay Patented Jan. 4, 1949 REPLACEABLE FURNACE ARCH NOSE CONSTRUCTION William George Young, Chicago... 111;,v assignor to Chicago Fire. Brick Compamn. a. corporation of.

Illinois Application October 30, 1944, Serial No. 561,081

7 Claims.- 1

The present invention relatesto furnace arches and more particularly'to means whereby sectional nose arches may be repaired and replaced from the exterior of the furnace. It is the particular purpose of this invention to provide a novel construction whereby one or more sections of a furnace nose arch can be lifted out and replaced without disturbing the remainder of the installation.

The detailed advantages of my invention will appear more fully as the description proceeds in connection with the accompanying drawings. It should be understood, however, that-the drawings and description are illustrative only and should not be taken as limiting the invention except insofar as it is limited by the claims.

In the drawings, Fig. 1 is a longitudinal sectional view of a portion of the furnace arch to which my invention is applied;

Fig. 2 is a fragmentary sectional view taken on the line 2--2 of Fig. 1;

Fig. 3 is a sectional view on the line 33 of Fig. 1; and

Fig. 4 is a perspective view of the various castings that support the nose arch of the furnace.

Referring now in detail to the drawings, the present invention is embodied in a furnace roof arch. The supporting structure for the arch comprises channel members In and II. Since the present invention is concerned only with the nose arch, the details of the mounting of the roofarch beyond the nose are not shown. The channels I and I I have secured thereto a plurality of spaced parallel castings I2 and 13, which are adapted to support a series of like tile hangers I4.

The tile hangers I4 are utilized both in the flat I I part of the roof and in the nose. The castings 1 I2 are bolted by suitable bolts I5 to the channel member I0. These castings are spaced apart a distance equal to twice the thickness of the tile members to be supported from them. It will be noted that each. of the castings I2 has oppositely directed flanges I6 and I! along its lower edge and that the hangers I4 are so shaped" as to engage the flanges I6 and I1 so thatthe hangers can slide along the flanges.

The castings l3 are mounted in uniformly spaced relation along the channel I I. These cast ing s I3 have hook portions I8 which engage with an angle iron I 9 that is welded to the back of the channel iron I I. The castings I3 are also. secured to the channel by suitable bolts an. The castings I3 are provided with. shelf portions II for supporting individual fire brick 22 that constitute an apron wall over the nose arch of the furnace. The castings I3 are also provided with flanges 23 adjacentthelower ends, these flanges serving tosupport: one or more of the hangers M, by: means: of which wedge-shaped nose tile 24. are supported; It. will be noted that the castings 153 have the: flanges 23 continued at 25 and 26 the portions 25. of, thefianges serving as stops to limit the movement ofthe hangers; M.

An inspection, of Fig. 1 will. show that the two castings. l2: and I3 have their end portions that face each. other: aligned and spaced. apart so: as toprovide: an open space12't. 'I'hecastings I2 and I3: also have. shelf portions 2-8 and; 29 along the top of. their adjacent ends. These shelf portions projectupwardly so as to provide shallow recesses 30 and 3| immediately back of the. shelf portions. Thisparticular construction is provided to receive a bar: which in turn pivotally supports a hanger 33. I provide the hanger 33, with twospaced arms 34 and 35. The armsreceive the central portion of the-bar 3.2-. between them. Alsothe arms and the bar are drilled to provide passage for a pivot pin 38 which pivotall-y connects the parts together.

The hanger 33 has oppositely directed projections; 31 and 3.8 at its lower end. These proiec'- tions are directed outwardly and upwardly at an angle. so: as to be received in the recesses 39 of adjacent tilemembers 40. The tile members. 40

are. rectangular in shape. One of the hangers 33 actually supports four tile members 40. The tile members 40 are backed up above and below by; wedgeeshaped tile 24 that are supported by the hangers I4. Theconstruction of the lower ends of the. hangers I4 is the same as that of the hanger 33. Likewise the. tile 24- are provided with channels 33a similar to those in the tile 40. The tile in. the horizontal section of the furnace roof are exactly like the tile 40 so that these particular shapes are interchangeable.

In order. to seal. the roof more tightly and profeet the supporting: structure above the tile, I prefer to cover the upper ends of the tile with sections of insulation. and to extend this insulation: along the. nose part of the arch up to. the apron wall 2'. The insulation may be in batts or in other suitable form.

The foregoing description isrbelieved to be sulficient to show that I have provided an improved arch construction whereby it is possible to replace worn out tilein the nose arch from the exterior of. the furnace with little difiiculty. Assuming that it is desired toreplace a certain section of-(the nose arch, the. insulation 41.- is removed. from behind the tile. 4.! which are to be removed; It. is then possible to lift the bar 32 with the hanger 33 and. remove an. entire section.

consisting of four tile and one hanger, from the nose arch. The tile 24 immediately above the removed section bind on the flanges of the hangers l4 so that they remain in place. However the repairman may work them loose and take them out through the opening provided by removing a hanger 33 and its four tile. A section consisting of the hanger 33 and the four tile can be inserted in the place of a removed section without difilculty. Moreover, when the section is removed, access can be had to the adjacent tile 24 to replace any of them.

It is believed that the nature and advantages of my invention will be readily apparent to those skilled in the art upon reading the description hereinbefore made. a

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A nose arch construction for furnaces, comprising a supporting framework including pairs of oppositely disposed supporting castings having tile supporting means thereon, wedge shaped tile carried by said means at the adjacent ends of the castings, each casting of apair having a shelf thereon, a bar resting on the shelves and providing a bridge between the two castings of a pair, a tile hanger suspended from the bar, and nose tile carried by said hanger and removably mounted thereby between the wedge shaped tile carried by the opposite castings of a pair of said supporting castings, the wedge shaped tile having their axes disposed at an angle with respect to each other, the said nose tile being as small in cross section at the furnace end as they are intermediate the ends whereby they may be lifted out by raising the bar from said shelves.

2. A nose arch construction for furnaces, comprising a supporting framework including pairs of oppositely disposed supporting castings having tile supporting means thereon, wedge shaped tile carried by said means at the adjacent ends of the castings and having their axes disposed at an angle with respect to each other, each casting of a pair having a shelf thereon, a bar resting on the shelves and providing a bridge between the two castings of a pair, a tile hanger suspended from the bar, and nose tile of substantially the same cross section from end to end carried by said hanger and removably mounted thereby between the wedge shaped tile carried by the opposite castings of a pair of said supporting castings.

3. In a nose arch, pairs of oppositely disposed H mediate the ends of the bar, and nose tile carried by said hanger within the projection of the two shelves and removably mounted thereby between the wedge shaped tile. 7 l

4. In a nose arch construction, a supporting framework having means to mount the upper and lower refractory portions of a nose arch in spaced relation, said portions including spaced sets of wedge shaped tile, the tile of each set being disposed with their axes at an angle toeach other, a series of cross bars resting on said framework and spanning the space between the upper and lower portions and refractory tile assemblies suspended from said cross bars within the projection of the space limits between the refractory portions and filling the space between said upper and lower refractory portions, said tile assemblies comprising tile uniform in cross section.

5*. In a nose arch construction, a supporting framework having means to mount the upper and lower refractory portions of a nose arch in spaced relation, said portions including spaced sets of wedge shaped tile, the tile of each set being disposed with their axes at an angle to each other, a series of cross bars resting on said framework and spanning the space between the upper and lower portions and refractory tile assemblies suspended from said cross bars within the projection of the space limits between the refractory portions and filling the space between said upper and lower refractory portions, said assemblies each comprising a hanger having a bifurcated end pivoted on one of the cross bars and lateral projections upon the other end, and refractory tile hung on said projections, said refractory tile being uniform in cross-section whereby each cross bar-hanger-tile assembly is removable from the exterior of the nose arch.

6. In a nose arch, pairs of oppositely disposed supporting castings having tile supporting means thereon, wedge shaped tile carried by said means at the adjacent ends of the castings, the tile at each end having their axes disposed at an angle to each other, each casting of a pair having a shelf thereon, the shelves of each pair being spaced apart, a bar resting on the shelves and providing a bridge'between the two castings of a pair, a tile hanger suspended from and disposed intermediate the ends of the bar, and nose tile carried by said hanger within the projection of the two shelves and removably mounted thereby between the wedge shaped tile, the castings-having recesses behind the shelves and the bar having downwardly directed lugs at the ends extending into said recesses.

7. In a nose arch, pairs of oppositely disposed supporting castings having tile supporting means thereon, said means comprising oppositely directed flanges at the lower edges of said castings, hanger clips having opposed hook portions slidably receiving one of said flanges, and refractory tile carried by said hanger clips, the opposing, spaced portions of said castings each carrying wedge shaped tile having their axes disposed at an angle to each other, each casting of a pair having a shelf thereon, the shelves of each pair being spaced apart, a bar resting on the shelves and providing a bridge between the two castings of a pair, a tile hanger suspended from the bar, and nose tile carried by said hanger and removably mounted thereby between the wedge shaped tile.

WILLIAM GEORGE YOUNG.

REFERENCES CITED,

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

UNITED STATES PATENTS Number Name Date 1,582,275 Kellner Apr. 27, 1926 1,657,113 Duncan Jan. 24, 1928 1,759,045 Dobie May 20, 1930 1,764,707 Abbott June 17, 1930 1,806,809 Lanyon May 26, 1931 1,806,747 Dobie May 26, 1931 1,999,708 Stowe Apr. 30, 1935