US838060A - Smoke-stack. - Google Patents

Description

PATENTED DEG. 11,'1906.

c. vSTIELLR. SMOKE STACK. APPLICATION FILED 00T.16. 1905.

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CARL STIELER, CF CHICAGO, ILLINOIS.

SMOKE-STACK.

Specification of Letters` Patent.

Patented' Dec. 1,1, 1906.

Application filed October 16. 1905. Serial No. 282,898.

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Be it known that I, CARL STIELER., a subject of the German Emperor, and a` resident of Chicago, in the county of Cook and State 'of Illinois, have invented certain new and useful Improvements in SmokeeStacks and Similar Structures, of whichthe following is a specification.

This invention relates to structures or inclosures having double walls and an intervening air-space; andthe generalI object of the invention is to make provision for unequal expansion and contractionand at the same time provide a connecting-wall or`connecting-wallscompletely bridging the space between the walls and closing the end'or ends of said space.

The particular obect ofA my invention is to provide improvements for smoke-stacks of the concrete-construction type, wherein the lower part has double walls or a hollow wall to provide a circumferential air-space open to the outer air. In such construction the inner wall protects the outer wall or smokestack proper against the superheated gases of combustion. As a result the inner wall is more rapidly expanded or contracted than the outer wall and is usually constructed so that it is free of the outer wall to permit the expanding movement, whichleaves an opening from the air-space'leading vinto the flue, through which opening the current of air from the air-space issues and intercepts the draft of hot gases. My invention has for its design the complete closure or substantial closure of this opening, and to that end consists of an outer and an inner wall constructed so that the upper end of the inner wall is loosely supported by the outer wall and in such a manner that the air-space between the walls is closed to the chimney-fine;

The invention fur-ther consists in a flexible wall, diaphragm, or partition between the outer and inner wall and in the novel details of construction and combinations of parts hereinafter described in detail, illustrated in the drawings, and incorporated in the claims.

In the drawings, Figure 1 is an elevation, partly broken away vertically and horizontally, of a smoke-stack embodying my invention. Fig. 2 is an enlarged horizontal section, taken on substantially line X X of Fig. l.

Fig. 3 is a similar section taken on line Y Y of Fig. l. Fig. 4 is an enlarged plan view of the flexible wall, partition, or diaphragm. Fig. 5 is a section taken substantially on line Z Z of Fig. 4. Fig. 6 is an enlarged fragment broken away between substantially lines Y Y and X X of Fig. l.

Referring to the drawings in detail, 2 represents a smoke-stack, the'lower section of whichcomprises anouter wall 3 and-an inner wall 4, separated to leave anair-space 5 open to the outer air through holes 6 and 7 at the top and bottom, respectively, vof the .air space 5. In order to allow the inner walll 4 to expand and contract relatively to the outer wall 3 and at the same time substan v tially close the air-space to the regular draft-passage 8 in the flue, I preferably aline the inner wallwith the upper portion of the stack and offset outwardly the outer wall,

whereby a ledge 9 is formed. The inner wall 4 is preferably arranged to form substantially a continuation of the wall 4, forming the up per portion of the stack and an integral par-t of the outer wall 3.

The upper endv of the Wall 4 is preferably arranged to overlap the ledge or offset 9, so as to cause the latter to give lateral support to the upper end of the inner walland` maintain the walls 4 and 4 in parallelism. Any suitable means that will give such support may be employed. a loose tongue-and-groove joint formed by a mortisc or groove i() in the ledge 9 the upper end of the wall 4 having a reduced portion or tongue 11, formed by cutting a rabbet l2 in the top and inner surface of wall 4. By this arrangement the inner surface 13 of the wall 4 is alined with the corresponding surface 14 Of the wall 4.

I close the air-space 5 to the flue 8 by means of a flexible annular wall, partitionl diaphragm, or web l5. (Shown on large scales in Figs. 2 and 4.) This ring, diaphragm, or wall is formed with a series of annular corrugations or transverse bends 16, 1.7, 1S, and 19 and has outer-edge ears 20, provided'with flanges 21 22, the former being turned downwardly and the latter upwardly in alternate order. These ears-and flanges are embedded in the wall 3. Similar ears 23, provided with upturned flanges 24 and downwardly-turned flanges 25, engage the inner wall 4 in like manner. The corrugations make the ringwall l5 flexible in two planes at right angles to each other. In other words, the width of the ring may be expanded or contracted to permit movement ofthe walls 3 and 4 toward each other, or it may be flexed in a circle to permit the inner wall to move longitudinally In the drawings is shown IOO IIO

relative to the outer wall under the expanding or contracting action of heat or cold. As the inner wall receives the intense heat to which the lower end of the smoke-stack is exposed and said wall is movable independently of the body of the smoke-stack the latter is effectively protected against the disintegrating influences of violent expansion and contraction, and the diaphragm or ring prevents the cooling-draft in the air-space 5 from interfering` with the draft in the flue. 23 represents a series of the usual steel or iron rods embedded in the concrete for the purpose of stii'lening or supporting the latter.

What I claim as new, and desire to secure by Letters Patent, is-

l. A smoke-stack having its lower section composed ofl separated and independentlymovable walls arranged to form an air-space therebetween and constructed so that said air-space is open to the atmosphere and closed to the chimney-flue. l

2. A smoke-stack composed of double walls forming an interposed circumferential lair-space open to the atmosphere at its upper and lower end, the upper end of one of said walls being arranged to move relatively to and to receive lateral support from the other of said walls, and means for closing said airspace to the gases of combustion.

3. A smoke-stack having its lower section composed of double walls forming an interposed circumferential air-space, and means for connecting the upper ends of said walls so as to close the upper end of said air-space to the smoke-stack flue and yet permit said walls to expand and contract independently of each other.

4. A smoke-stack having its lower section provided with an inner wall separated from the walls of the smoke-stack so as to provide a circumferential air-space open to the atmosphere, and a closure between said inner wall and smoke-stack which. closes said airspace to the passage for the gases of combustion and at the same time permits said inner wall to expand and contract independently of the walls of said smoke-stack. Y

5. A smoke-stack having its lower section composed of double walls arranged to form an interposed circumferential air-space open to the atmosphere and its upper section composed of a single wall having a ledge at the junction of said sections, the top of said. inner wall arranged to receive lateral support at said ledge, anda fiexible diaphragm arranged to close said air-space to the passage for the gases of combustion.

6. A smoke-stack having its lower section composed of an inner and an outer wall separated to form an intervening air-space, said outer wall being open to said air-space so as to permit circulation of air through said airspace, and a closure between `the top of the inner wall and said outer wall which 'permits the former to expand and contract relatively to the latter and also closes said air-space to the smoke-stack iiue.

7. A smoke-stack having an outer and an inner wall arranged to'form a circumferential air-space open near its upper and lower end to the atmosphere, and an annular partitionwall arranged to connect said outer and inner wall and close said air-space to the flue, said partition being constructed so as to permit said outer and inner wall to expand or contract either in parallel planes or in the same plane.

8. A smoke-stack, having an outer and an inner wall, arranged and constructed to form a circumferential air-space having openings through said outer wall leading to the atmosphere, and a diaphragm, or connecting-wall, spanning said air-space above said openings, said diaphragm or wall being resilient so as to adjust itself to expanding or contracting movements of said outer and inner walls relatively to each other.

9. A smoke-stack having its lower section composed of double walls constructed and arranged so that they form an interposed circumferential air-space open to the atmosphere and its upper section composed of a sin- V gle wall, and a corrugated diaphragm, or connecting-wall 15, of annular form, said diaphragm or connecting-wall having its outer circle embedded in the outer of said walls and the inner circle embedded in the inner of said walls, said diaphragm or wall arranged to close said air-space to the flue in said smokestack.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CARL STIELER. Witnesses:

MARTIN STIELER, J. T. FIsKE.

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