Improvements in Smoke, Heating, or Ventilating Flues.
Year: 1890

page_text: Complete specification Len, OR COL
COMPLETE SPECIFICATION.
Improvements in Smoke, Heating, or Ventilating Flues.
I, THOMAS TAYLOR MOORE, of Kansas City, Jackson County, State of
Missouri, United States of America, Contractor, do hereby declare the nature of
this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
My invention relates to smoke, heating, and ventilating flues, and it consists in the
novel construction and arrangement hereinafter fully set forth and described.
The object of my invention is to provide a flue which will create a better draught
for smoke, impure air, and heat than has heretofore been attained, its further object
being to accomplish these ends with simplicity and economy, which I do by
constructing and utilizing the device illustrated in the accompanying drawings, in
which,
Figure 1 is a cross-sectional view of a chimney showing my improved double
flue.
Figure 2 is a similar view of a chimney, showing the device when formed into a
single flue.
Figure 3 is a sectional view taken on line x x of Figure 1.
Figure 4 is a sectional view taken on line y y of Figure 2, and
Figure 5 is a sectional view of the modified form of device.
my
Referring to the drawings by letter, A represents a chimney constructed of brick,
stone, or other suitable masonry, having the fire-places F F, in which fires may be
kindled.
"
Bare pipes built of terra-cotta, metal, or other suitable material, constructed in
the chimney, as shown in the drawings. In said pipe is secured the spiral bar C,
which forms the flues E, said flues E passing from the grates F F through the
chimney, assuming the shape of the spiral. This is formed by taking a flat bar the
size of the flue and twisting it in the shape of an auger or "Archimedean screw,'
on one side of the bar forming a flue for one grate and the opposite side forming
another flue. The webs c of the spiral bar C are designed to fit closely against the
pipe B, so that there will be no connection between the two flues. Said pipe B
has bells or projections b, in which the sections of pipe are secured. These bells
or offsets 6 make the inside surface of pipe equal all the way down, as shown in
Figures 1 and 2.
a is a thimble through which a pipe from a stove or latrobe (that is a parlour
stove, partly sunk into the mantelpiece of a chimney and generally provided with
registers for heating rooms in upper stories) may be inserted. Any number of
these thimbles may be provided, according to the height of the building in which
these flues and chimneys are constructed.
$
D shows the device constructed of a single flue, having the bar made only half
the width of the flue and twisted in the shape of a spiral, thereby causing the
smoke, heat, and foul air to be drawn up through the chimney through the single
chamber formed by said spiral bar. This bar can be constructed of sheet metal or

page_text: in sections of terra-cotta, and built with the metallic or terra-cotta covering B
placed around it, or it can have the masonry built closely against the flanges of the
spiral bar D.
G shows my device constructed in a modified form, consisting of an outer
covering G, having one or more tongues g radiating toward the centre and twisted or
formed in the shape of a spiral, thereby drawing the smoke up through a single flue, but
causing it to wind in its passage through said flue. These flues can be used in
residences, stores, or factories, and operated with stoves, furnaces, latrobes, or open
fire-places. The length of the flue is increased a great deal by having the spiral
bars. Therefore, where it has been necessary heretofore to construct very tall
smoke-stacks, I obtain better results with a lower smoke-stack by using the flues
constructed of the spiral bar. These flues can be used for conducting heat as well as
smoke, and serve as a ventilator for conveying the impure air from the buildings in
which they are constructed. The flue being constructed in this manner will, by
reason of the spiral chambers, prevent the smoke and cold air from descending into
the rooms. Heretofore, where low chimneys have been constructed, it has been
found almost impossible to prevent back draughts of cold air and smoke. I, in my
improved flue, obviate this and provide a flue of superior draught to any heretofore
constructed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
1. A spiral flue composed of a suitable bar, equal in width to the diameter of the
chimney, twisted and formed into the shape of a spiral and fitting tightly in the
chimney, thereby forming with the chimney-walls two flues which convey the smoke
from the stove or furnace, substantially as described.
2. A spiral flue constructed of a spiral plate, extending from the centre of the
chimney to the sides thereof, composed of metal or terra-cotta, or other suitable
material, inclosed in pipe B, thus increasing the draught and length of the chambers,
substantially as described.
Dated this 12th day of September 1890.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.