An Improved Cowl or Chimney Cap.
Year: 1887

page_text: Date of Application, 14th July, 1887.
Specification Accepted, 16th Aug., 1887.
An Improved Cowl or Chimney Cap.
I, HIRAM FLINT HENRY of the Village of Gowanda of the county of Cattaraugus
and state of New York, United States of America Amusement Manager 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:-
The object of my invention is to provide an improved chimney-cap which offers the
least possible resistance to the smoke and products of combustion, and at the same
time effectually prevents the entrance of wind to impede the upward tendency of the
same; and to this end my invention peculiar construction and arrangement of parts,
as hereinafter fully described, and pointed out in the claims.
Figure 1. is a perspective view of my improvement. Fig. 2. is a sectional eleva-
tion of the same, and Fig. 3. is a perspective view shewing the same provided with a
saddle or deflector in the fork of the branches.
Similar letters of reference indicate similar parts in all the figures.
Referring to the drawings, A represents the cap, which is composed of a section of
pipe, a, provided with the upwardly and outwardly projecting sections or branches b,
the whole forming a Y-shaped cap. The sections or branches 6 can be larger or
smaller than the section a, and project but a short distance beyond the section a.
The angle a², formed by the sections or branches b, is directly over the centre of the
section a. so that the products of combustion will be divided and deflected outward
in their passage through the cap. In front of the said sections, and a short distance
from the ends thereof, I secure shields or plates c, of the size and shape of the
openings therein, by means of the bars or braces d, and to the said plates d, I secure
the cones e.
While I do not restrict myself to the distance the sections or branches b, project
beyond the section a. or the distance the plates c, are to be from the end of the said
sections, yet I prefer the branches to project about an inch on their under sides from
the pipe a and the plates to be about the same distance from the end of the branches.
If desired, a saddle or deflector, f, may be placed in the fork of the branches and at
right angles thereto, as shewn in Fig. 3.

page_text: A cap constructed as above offers little or no resistance to the escaping smoke and
products of combustion, as they will be divided by the angle a², and deflected without
retarding their progress, and the branches each being of the same size as the pipe-
section a, the capacity for delivering is doubled. The cones at the ends of the
branches prevent the wind from blowing into the cap, and they, with the saddle,
deflect the wind so as to cause it to pass over the space between the cones and the
ends of the branches, thereby increasing the draft.
I am aware that caps have been provided with inverted-cone-shaped deflectors sup-
ported above the top of the pipe. I am also aware that shields in front of openings in
a cap are old; and I am further aware that a cylindrical band mounted on a pipe has
been provided with flaring or funnel-shaped flanges, and I therefore do not claim
such inventions.
Having now particularly described and ascertained the nature of my said Invention,
and in what manner the same is to be performed I declare that what I claim is :-
:-
1. A chimney-cap consisting of a section of pipe provided with outwardly and
upwardly projecting branches having their angle of meeting directly over the centre
of the said pipe, and provided with imperforate deflecting cones secured a short
distance from their ends, substantially as herein shown and described.
2. A chimney-cap consisting of a pipe provided with upwardly and outwardly
projecting branches at its upper end, having their angle of meeting over the centre of
the pipe, plates secured a short distance from the ends of the said branches, imper-
forate cones on the said plates, and a deflector in the angle of the branches,
substantially as herein shown and described.