AN IMPROVED VENTILATOR FOR CHIMNEYS AND OTHER PLACES."
Year: 1881

page_text: LETTERS PATENT to Henry Whannell Yates, of Brighton, in the County of
Sussex, Clerk in Holy Orders, for an Invention of "AN IMPROVED VENTILATOR
FOR CHIMNEYS AND OTHER PLACES."
PROVISIONAL SPECIFICATION left by the said Henry Whannell Yates at
the Office of the Commissioners of Patents on the 12th November 1881.
HENRY WHANNELL YATES, of Brighton, in the County of Sussex, Clerk in
Holy Orders. AN IMPROVED VENTILATOR FOR CHIMNEYS AND OTHER PLACES."
**
The object of my Invention is a simple and efficient ventilator by which up
draught shall be promoted and down draught prevented in chimneys, the
ventilating pipes of water closets, and other places where ventilation is required.
My improved ventilator consists of two main parts, viz., a body and a head or
top. The body is a cylindrical pipe or tube. The head or top is a frustum of a
hollow cone, open at top and bottom; the diameter of this cone at the bottom is
considerably larger than the diameter of the ventilator body, while the diameter of
the cone at the top, that is to say, the top opening, is considerably less than tho
diameter of the body, the relative diameters being about 1 and 3.
The cone is supported by means of arms or otherwise, so that its base is above
the top of the body, say, one inch and a half more or less, and the form of the cone
in section is of octagtonal or other polygonal figure.
With a ventilator constructed as above described, there is free circulation for the
wind between the body and the head, so that it is not liable to collect therein and
prevent the free egress of smoke; any wind or current which may enter at the
comparatively small opening at the top of the head escapes freely between the head
and body; there is a clear passage for the current from the chimney or other shaft
through the body and head of the ventilator, and owing to the angles obtained by
the octagonal or polygonal form of the cone, the wind does not tend as in a circular
cone to rotate within the cone, and thus hinder the direct curreut, whether upward
or downward.
-
My improved ventilator has no obstruction for sweep's brushes, and having no
revolving or inovable parts is not liable to get out of order.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Whannell Yates in the Great Seal Patent Office on the
11th May 1882.
HENRY WHANNELL YATES, of Brighton, in the County of Sussex, Clerk in Holy
Orders. "AN IMPROVED VENTILATOR FOR CHIMNEYS AND OTHER PLACES."
The object of my Invention is a simple and efficient ventilator by which up
draught shall be promoted and down draught prevented in chimneys, the
ventilating pipes of water closets, and other places where ventilation is required.
My improved ventilator is represented in the annexed Drawings, Figure 1 being
an elevation; Figure 2, a central vertical section; and Figure 3, a plan or top
view. It consists of two main parts, viz., a body A and a head or top B. The
body A is a cylindrical pipe or tube. The head or top B is a frustum of a hollow
cone, open at top and bottom. The diameter of this cone at the bottom is
considerably larger than the diameter of the ventilator body A, while the diameter
of the cone at the top, that is to say, the top opening, is considerably less than the
diameter of the body; the relative diameters may vary from about 1 and 3 to
about 1 and 6 according to circumstances.
The cone B is supported by means of arms C, C, or otherwise, so that its base is
above the top of the body A, say, three inches more or less, and the form of the
cone in-section is octagonal, as shown, or of other polygonal-figure; or-it-might-be
circular, but I do not recommend this form.
With a ventilator constructed as above described there is free circulation for the
wind between the body A and the head B, so that it is not liable to collect therein
and prevent the free egress of smoke; any wind or current which may enter at the
comparatively small opening at the top of the head escapes freely between the head
and body; there is a clear passage for the current from the chimney or other shaft
through the body and head of the ventilator, and owing to the angles obtained by
the octagonal or polygonal form of the cone, the wind does not tend, as in a circular
cone, to rotate within the cone, and thus hinder the direct current, whether upward
or downward.
My improved ventilator has no obstruction for sweeps' brushes, and having no
revolving or movable parts is not liable to get out of order, and it is not top heavy.
Having now described the nature of my said Invention and in what manner the
same is to be performed, I declare that I claim,-
The combination in order to form a ventilator for chimneys or other places of a
cylindrical body and a head or top in the form of a frustum of a hollow cone,
whose section is octagonal or of other figure, the said cone being open at top and
bottom, its diameter at the base being considerably larger, and its diameter at the
top considerably sinaller than the diameter of the body, and its base being above
the level of the top of the body, all substantially as hereinbefore described and
shown in the annexed Drawings.
In witness whereof, I, the said Henry Whannell Yates, have hereunto set my
hand and seal, this Sixth day of May, One thousand eight hundred and
H. W. YATES. (L.S.)