US648726A - Internal flue for chimneys or smoke-flues. - Google Patents

Description

No. 648,726. Patented May l, i900.

' T. P. CORDREY.

INTERNAL FLUE FOB CHIMNEYS 0R SMOKE FLUES.l (Application'led J an. 13, 1900.)

(No Model.)

UNrTED STATES PATENT UFFICE."

THOMAS l). lCORDl-EY, OF FOR'l" tVAYNE, INDIANA.

INTERNAL FLUE FQR CHIMNEYS O R SlVlOKE-FLUES.

SPECIFICATION forming part Of Letters Patent No. 648,726, dated May 1, 1900.

Application filed January 18| 1900. Serial No. 1,320. (No model.)

.To all 107mm. z5 may concern.:

Be it known that I, THOMAS P. CORDREY, v

a citizen of the United States, residingin the cit'y of Fort Vayne, in the county of Allen and State of Indiana, have invented a' new and useful Internal Fine for Chimneys or Smoke-Flims, of which the following isa specification.

My invention relates to improvementsvi'n chimneys or smoke-nes designed to canry off the-products of combustion; and the objects of my improvement arc,'frst, to provide an internal vflue for a chimney that shall thoroughly protect its walls from vthe action of deleteriousfumes and gases; second, to provide an internal flue that maybe more easily cleansed; third, to provide an internal fille that can be readily placed within an existing chimney.

Other objects and advantages will hereinafter appear from ythe description.; and the invention consists in the construct-ion and novel combination of parts hereinafter described, pointed ont in the appended claims, and illustrated .in the accompanying drawings, in which- Figure 1 is a plan view of the supportingframe. Fig. 2 is a sectional view showing the method of attaching the sections of the device. Fig. 3 is a vertical section of device in placein an angle in a chimney. Fig. 4 is an enlarged detail showing the iiue connected to the angle-iron.

Similainumerals of reference refer to simi- 'lar parts throughout the several views.

It is well known that the mortar and cement used in building and lining brick chimneys disintegrate from val'ious causes and especially from the deleterious gases and fumes of combustion. This disintegration becomes so rapid where natural gas is used that within a year or two the chimney isnsually stripped of its lining or cement coating, portions of the mortar between the bricks have fallen out, and the chimney is left thereby in a dangerous condition. Frequent Ires result therefrom ,and itis then especially unsafe to change to a light fuel, such as Wood. I have discovered a cheap and speedy process by which sheets of asbestos up to half an inch or more in thickness can be bent in form of a rectangular or other angular ue, so that it will substantially maintain such i'orm, the forming being done Without tearing or injuriously affecting the fibers of the sheet. I also have discovered that when au asbestos flue shall become coated by the products of combustion it can be readily cleansed by passing through such ilue certain metallic fumes in connection with the products of combustion, the result being that such coating is thereby entirely detached from the asbestos walls of the ue without injuring the vsame and falls ldown without any manipulation.V These processes of cleansing asbestos dues and of forming asbestos ilues in sec# tional lengths I reserve as the subjectanatter forotherapplications. I preferablycoatsuch asbestos fines on the outside with asphaltum or other waterproof coating` l2 to thoroughly protect it4 from external dampness. Such coating is appliedby a brush or other suitable means similar to the application of a' -coat of paint.

The ue is constructed as follows: Sheets of asbestos are 'made into sectional parts or joints 5 of the form and size desired and preferably thirty-six inches in length, 011e end of each section being adapted to enter the other end of the section to be placed over it, the overlappings 6 being preferably about two inches in length, which sections when joined are preferably further secured byriveting them together to further secure them in place 'to form a continuous ue. One end of such section maybe crimped similar to the crimping of stovepipe-sections for the same pur'- pose. The first section or bottom of the iiue is provided with a frame 7, made of angleiron and conforming in size and shape'to the flue, as shown in Fig. 1. The horizontal part of the angle-iron does not-project beyond the thickness-of the wall of the iiue, and its vertical sides are attached to the bottom of the fille by rivets or in any other suitable manner, so as to be securely attached. (See Figs. l and 4.) The asbestos sheets when shaped to conform to the size and form of the flue in cross-section have their vertical edges 11 (see Fig. 1) riveted together. or otherwise secured, the lap being preferably two inches. This is a preferable method of securing the sidesin place to preserve the form of the iiue;

Where anew chimney is constructed, niy

IOO

e p Marce ,formed section l() of the internal ilue adapted to fit such angular space is formed, as shown inl Fig. 3, the vertically-placed fines having their tops and bottoms at right angles to the line of the iiue and 'the angling all being provided for by such special section l0, as vshown in said drawing. Where such lues are in an existing chimney, it is necessary to remove a portion of the brick of the chimney on one sideof the place Where such angling is made to put in suchspecial sections at that place and then 'replace the wall of the chimney.

My iiue is constructed, as before stated, entirely of asbestos sheets, preferably of one-half inch in thickness and preferably coated on the outside, as before stated, with waterproof coating to exclude dampness. An existing chimney where the cement and mortar by reason of disintegration have become .loose and fallen down, leaving dangerous cracks and crevices in the chimney, is thoroughly Walls of the chimney proper furnishes additional protection to said chimney, and the material used permits the use of metallic fumes of a character to quickly cleanse its Walls of all deposits from the products of combustion. Its construction permits the sections to be 10W- ered into an existing chimney singly, the sections being placed and securely attached as they are lowered from the top. Such internal flues can be made'cheaply, easilysupported and secured in position, and where placed in a new chimney the cement lining may be dispensed with. My internal flue thus made and placed is almost indestructible.

Y Flues constructed in sections or joints riveted or secured to each other to form an entire flue are very old. I do not claim such construction; but A What I do claim, and desire to secure'by LettersPatent, is

I. The combination with a chimney or smoke-dues of an internal flue composed of asbestos, shaped to conform'to the flue of said chimney or smoke-dues, and placed therein so that a small air-space shall be formed around it; and Waterproof coating to the outside of said internal ilue.`

2. As an article of manufacture, short ilues formed of asbestos preferablythirty-six inches in length and adapted to be secured to each other to form a continuous flue and provided with a Waterproof coating on their external surfaces.

3. An internal ilue formed of asbestos adapted to be placed inside `of'a chimney or smoke-dues formed in sections adapted to be secured to each other to form a continuous ue, and a metallic frame securely attached -to the lower end of the bottom section.

In witness-whereof I have hereunto set my hand, in the presence of two witnesses, at the city of Fort Wayne,lndiana,this 11th day of January, 1900.

THOMAS I. CORDREY.

Vitnesses:

R. E. THAIN, l-I. A. HARTMAN;

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