US926772A - Smoke-stack. - Google Patents

Description

N. M. SGHARNBERG.

SMOKE STACK.

APPLIOATION FILED MAR. 1, 1909.

Patented July 6, 1909.

. Inventor:

Witnesses Actor-hays.

UNITED sTATns PATEN opinion- NANNING M. SCIIARNBERG, OF MIIHIGAN CITY, INDIANA.

SMOKE-STAGK.

Application filed March 1, 1909.

To all whom it may concern:

Be it known that I, NANNING M. SCIIARN- BERG, a citizen of the United States, and resident of Michigan City, in the county of Laporte and State of Indiana, have invented certain new and useful Improvements in Smoke-Stacks and I do hereby declare that the following description of my said invention, taken in connection with the accompanying sheet of drawings, forms a full, clear, and exact specification, which will enable others skilled in the art to which it appertains to make and use the same.

This invention has general reference to improvements in metallic smoke stacks; and it consists, essentially, in the novel and peculiar combination of parts and details of construction, as hereinafter first fully set forth and described, and then pointed out in the claims.

In the drawings already referred to, which serve to illustrate this invention more fully, Figure 1 is an elevation of my improved smoke-stack construction, partly in section, the sectional part being on line :t a of Fig. 2. Fig. 2 is a plan of the same. Fig. 3 is an outline plan of a twin-stack construction. Fig. 4 is a sectional view of a fragment of the stack-base. Fig. 5 is a plan of a portion of the same showing the means for removably retaining the clamping-bolts in position. Fig. 6 is a perspective view of one of the clamping-levers.

Like parts are designated by corresponding symbols and characters of reference in all the figures.

The object of this invention is the production of an efficient, serviceable, durable, and cheap metallic smoke stack for a masonry sub-structure, and while applicable to all kinds of smoke-stacks, it is particularly designed for use in connection with existing masonry chimneys, which for some reason or other and especially for lack of draft, have to be lengthened. This is particularly the case where higher buildings are erected adjacent to structures and where the draft of the chimneys of the lower building is impaired by the higher building or buildings.

A in these drawings designates the masonry sub-structure of a smoke-stack. It may be of any size and external contour, and also the top of any masonry chimney.

B is the base, and C the smokestack. This base is preferably an iron casting having a rectangular or oblong body provided Specification of Letters Patent.

Patented July 6, 1909.

Serial No. 480,627.

with laterally projecting flanges 24 of sufficient width to cover the entire upper surface of the sub-base A, said body being tapering and terminating in a shouldered annular rim 10, to which the stack B is, preferably re- 1110 ably attached by screws 1], or permanently secured by rivets in any approved manner. This stack-base is ren'iovably held to the sub-base A by four, (more or less,) clamping levers 12, said levers having trunnions l3, engaging semi-circular bearings 19, Fig. l, in the corners of the tapering body, there being slotted apertures 18, in which said bearings terminate, and through which the levers 12 are passed with their lower portions. The upper end of these clampinglevers 12, are bifurcated at 14, Fig. 6, for the passage of clamping-bolts 15, said bolts being provided with suitable nuts 17, to draw the upper end of said levers 12 toward the body of the stack-base, as will hereinafter be more fully referred to. On the lower end of these clamping levers there are, preferably \l-shaped, projections 16, which are adapted to engage the interior of the flue I), Fig. 1, and thereby securely hold the stack-base with its smoke-stack tosaid sub-structure A.

On the four corners of the stack-base there are located above the bearings 19 lugs, 20, which lugs are bifurcated at 21, Fig. 5, so that the heads 22 of the bolts 15 may be passed into the space 23 between said lugs and the body of the stack-base. By bllUS forming the lugs integral with the body of the stack-base I am enabled to produce the entire stack-base in the process of casting without being compelled to do any machincwork thereon, and at the same time provide for ready and convenient means for placing and securing said bolts IS in position, and removing the same should this become necessary.

In Figs. 1 and 2 I have shown a single smoke-stack erected upon a masonry sub base or structure, and in Fig. 3 I have out lined a twin-stack upon a single sub-structure. In this latter case I shall place the four clamping-levers 12 at the four corners marked a, b, c, and (Z; said clamping-levers and their means of attachment to the stackbase being otherwise precisely as shown in Figs. 1 and 2, and I have, therefore, omitted to show these clamping-members in said Fig. 3.

I now call attention to the fact that the stack-base is preferably made in cast iron of sufficient thickness so as to be practically indestructible, and that, there being no machining or other manual labor required for finishing the same, it can be produced at a comparatively low cost.

By having the lateral flange 24 of the stack-base covering the entire upper surface of the masonry sub-structure, I prevent washing out of the mortar or cement used in the structure at the upper end of said substructure, which is a very desirable feature in chimney and smoke-stack construction.

It is evident that the sub-structure may be a cement or concrete construction instead of being made in bricks. It is further evident that the lower ends of the clampinglevers may be differently formed from the \l-sh'aped contour shown. I prefer the latter construction for the reason that the V- shaped projections are especially adapted for engaging joints in the brickwork of the sub-structure, or will take ahetter and firmer hold of any smooth surface than any other shape of projections.

It will now be observed that in erecting a smoke-stack upon a sub-base, the stack is first attached to its stack-base and then the entire stack placed upon the sub-base. Then the four clamping-members are passed through the slotted apertures 18 at the corners of the tapering body with their lower ends, and the trunnions located in their bearings. The bolts 15 are now placed with their heads into the spaces behind the bifurcated lugs and the threaded portion of these bolts dropped into the slots 14 of the clamping members. When now the nuts 17 are revolved in the proper direction, they will draw the upper ends of the clamping'members toward the body of the stack-base and their lower ends toward the inner walls of:

the sub-base where the projections 16 will engage said walls at the corners thereof and thereby securely, but removably, attach the stack with itsbase to said sub-base.

I prefer to locate the clamping members at the cornersof the rectangular stack-base, but it is obvious that they may also beplaced in the sides of said stack-base. This and other minor changes which will readily suggest themselves to a skilled mechanic, may be resorted to without departing from the scope of my invention.

Having thus fully described this invention, I claim as new and desire to'secure to me by Letters Patent of the United States 1. In a smoke-stack construction having a masonry sub-base, a stack-base comprising a rectangular tapering body terminating in a shouldered annular member, a laterally projecting flange on said body adapted to cover approximately the entire upper surface of said sub-base, there being slotted apertures in the four corners of the tapering body, and bearing adjacent to the sides of said slots;

clamping levers in said slotted apertures,-

there being trunnions on said levers adapted to engage said bearings, said levers being slotted at their upper ends and having engaging-projections on their lower ends, and: means at the corners of the tapering body for drawing the upper ends of said levers toward the tapering body of said staclebase.

2. In a smoke-stack construction having a masonry sub-base, a stack-base removably secured to said sub-base, said stack base comprising a tapering base having a laterallyprojecting flange approximately covering the upper'surfaceof said sub-base, and terminating in a shouldered annular rim a stack secured tosaid annular rim, and means for removably securing said stack-b ase to said subbase,said means comprising clamping leverspivoted in the-body of said stack-base in approximately their middle, there being fastening bolts at the upper end of said levers, and engaging projections at their lower end, the latter projections being adapted to engage the inner walls of the sub-base, as described.

3. In a smoke-stack, a base comprising a rectangular tapering body terminating in a shouldered rim, a laterally-projecting flange at the lower end of said body, there being slot-holes in said tapering body and semi-circular bearings adjacent to the sides of said slots; levers in said slot-holes said levers being. provided with trunnionsadapted for engagement with said bearings; engagii'ig' projections at the lower end of said levers, the upper end of said levers being bifurcated lugs on said tapering body above said bearings; bolts in said lugs and passing through the bifurcated ends of said lovers; and nuts on' saidbolts.

In testimony that I claim the foregoing as my invention I have hereunto set my hand-in the presence of two subscribing witnesses.

* NANNING M. SCHARNBERG.

lNitnesses MATTHEW J. KENEFIoK, MAYME C. ZABOUK.

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