US1209934A - Flue. - Google Patents

Description

. CAMPFIELD.

FLUE.

APPLiCATION FILED JAN. 9

W Patented Dec. 26,1916.

2 SHEETSSHEET l.

Inventor Attorneys Witnesses n4: NCRRIS PETERS c0-. WASHINGTON, D. c.

E. M. CAMPHELD.

FLUE.

APPLICATION FILED JAN-$1914. 1,2 9,93%. Patented Dec.26,1916

2 SHEET$SHEET 2- a; Z; & 49'

Actorneys r: NORRIS PETERS C0,, WASHINGTON, D. r.

e. S e n TINTT EDWIN M. GAMPFIELD, OF RICHMOND, INDIANA.

FLUE.

Specification of Letters Patent.

Patented Dec. 26, 1916.

Application filed January 9, 1914. Serial No. 811,226.

To all whom it may concern:

Be it known that I, EDWIN M. CAMPFIELD, a citizen of the United States, residing at Richmond, in the county of Wayne and State of Indiana, have invented a new and useful Flue, of which the following is a, specification.

This invention relates to flues for use in the construction of chimneys and the like, the principal object of the invention being to provide a fine made up of blocks having air cells therein whereby overheating of the outer surface of the flueis prevented.

A further object is to provide means whereby the cells in each section of the flue are closed at their ends so that dead air spaces are thus produced.

A further object is to provide a flue made up of sections held together in a novel man ner. these sections being readily assembled.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made with in the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings, Figure 1 is a vertical section through the meeting portions of the sections of a flue. embodying the present improvements. Fig. 2 is a section on line AB Fig. 1. Fig. 3 is a view similar to Fig. 2 but showing a modified form of flue. Fig. 4 is a transverse section through another form of flue. Figs. 5, 6 and 7 are transverse sections through other modified forms of flues.

Referring to the figures by characters of reference 1 designates corner blocks or sections of a flue, each section being made up of concrete or other plastic material and being provided with longitudinal openings 2. The longitudinal edges of the sections are provided with grooves 3 which increase in width inwardly, these grooves in the various sections being adapted to register when the sections are assembled, after which the grooves can be filled with cement or other suitable material as indicated at 4 so as thus to form a key which will hold the sections together securely.

In the structure shown in Fig. 2, the flue section is made up of four'similar sections. If desired, however, and as shown in Fig. 3, side sections 5 may be interposed between the corner sections and these sections 5 can be provided with grooves 6 in their inner faces adapted to register with corresponding grooves 7 formed in the ends of a partition 8. A filling 9 of cement or other plastic material can be placed in the registering grooves so as to thus key the partition 8 to the side sections 5. The side sections 5 are similarly connected to the corner sections. The side sections as well as the partition are both formed with longitudinal air spaces or passages as shown at 10. In a structure of this type two flues are provided. Instead of making the partition 8 a piece which is separate from the side walls, a partition 11 can be made integral with a rectangular one-piece flue 12, as shown in Fig. 4 and a U-shaped flue section 13 can then be placed against the flue 12 and secured thereto by means of keys 14 made up of plastic material poured into registering grooves 15 formed in the sections. Another form of flue has been shown in Fig. 5 wherein a section 16 similar to the section 12 is used in connection with a section 17 similar to the section 13. Interposed between these two sections is a U-shaped section 18 and all of the sections are held together by keys made up of plastic material placed within registering grooves 19 formed in the sections.

In Fig. 6 a flue formed in a single piece has been shown, said flue being substantially rectangular while in Fig. 7 a cylindrical one piece flue has been shown.

It will be noted that in all of the structures illustrated, air spaces are formed in the walls thereof, these air spaces being extended throughout the length of the sections.

As shown in Fig. 1, the ends of the sections may be cut off straight and a ring 23 of cement or other suitable material can be interposed between the sections, there being washers 2 of asbestos or the like placed upon the opposed faces of the ring 23. Furthermore the said ring can have lugs 25 ex tending upwardly and downwardly therefrom and into certain of the air cells so as to prevent lateral shifting of one section relative to the other.

It has been found that a fine when constructed as herein described, can be readily set up and Will operate positively to prevent overheating and consequent danger of fire loss.

It is the practice in the construction of fines to utilize a single thickness of fire clay with mortar joints. It has been found that these joints are not always properly made and, as the-mortar is not --formedof fire clay it will not stand the heat to Which it is sub jected and, consequently, the connections be-' tween: the'sections of the flue often become broken, this resulting; in fires.

By constructing a flue such as herein described, the air cells or dead air spaces prevent to-a very'large extent, the heating of the outer surfaces of the flue and maintain the inner surfaces-of the flue Warm so that the danger of fires is not only eliminated but a better draft through the flue results.

hat is claimed is A chimney flue formed of sections of plastic material, each section being made up of separate members having longitudinally eX- tending air cells in the Walls thereof, said cells extending throughout the length of the Walls, there being grooves in the meeting faces of the members, a plastic key Within the grooves for holding the members together, the sections of the flue being placed one above the other, and means interposed between the sections for closing the ends of the cells and for sealing the joints between the sections, said means including projecting portions extending into the cells, and Washers upon the'upper and lower faces of said means and engaging the adjacent ends of the sections.

In testimony that I claim the foregoing as'my own, I have hereto afiixed my signatu re in the presence of tWo Witnesses.

. EDWIN M. CA-MPFIELD. Witnesses I. B. ARNOLD, ALICE M. sGI-IUERMAN.

copleszot this patentmay'be obtainedfor five cents each, by addressing the Commissioner of Patents.

Washington, D. G,

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