Improvements in and relating to Chimney-pots and the like for Preventing Down-draught.
Year: 1896

page_text: Date of Application, 30th June, 1896-Accepted, 1st Aug., 1896
COMPLETE SPECIFICATION.
Improvements in and relating to Chimney-pots and the like for
Preventing Down-draught.
I, FRANK ALFRED TUGWELL, of 102 Westborough, Scarborough in the County of
York, Architect, 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 :-
This invention relates to certain improvements in the form and in the combination.
and arrangement of the various parts of chimney-pots and the like, whereby the force-
of wind is concentrated therein, and carried upward by suitable inlets and bafflers, in
order to assist the natural draught of the chimney, and to prevent high winds from
interrupting or reversing such draught.
In order to enable this invention to be fully understood, I will proceed to describe.
the same, with reference to the accompanying drawings, in which:"
Figure I represents an elevation and Figure 2 a vertical sectional elevation of my
improved form of chimney-pot.
Figures 3 and 4 represent sectional plans of the same at the lines x x and y y
respectively.
Similar letters of reference refer to corresponding parts in each figure of the
drawings.
The main shaft of the pot is represented at CC, upon the top of which the circular
louvres or inclined rings A and B are fixed by radial webs or brackets.
These louvres are formed or fixed at a steep angle, approaching the vertical, and
have a suitable space provided between each other and between the lower louvre and
the main shaft for the admission and passage of air or wind, which are therein
diverted upward and escape from the top of the chimney-pot, taking with them smoke
and heated air from the flue.
In combination with the louvres named, and to assist them in operation, I employ
two or more sets of upwardly sloping bafflers or inclined planes D D, and EE, which
lead through openings in the main shaft, and are covered by hoods D¹ D', and E'E'
respectively, thus forming arched and tapering inlets for air or wind, as represented.
These arched inlets terminate inside the main shaft CC in flattened pipes D2 and E
which are more clearly shown in the sectional plans Figures 3 and 4, and which
are directed upward for the purpose of carrying up the currents of air or wind which
have been caught and concentrated between the tapering and arched inlets and the
inclined bafflers.
In the construction of the chimney-pots described, I make the side inlets of a
combined sectional area greater than the area of the outlet, in order that the force of
the entering and upwardly diverted current shall at all times overcome any tendency
to down-draught.
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. The improved chimney-pot, as described, and represented in the accompanying

page_text: 2. In the construction of chimney-pots and the like, the combination of the louvres
or inclined rings with the arched inlets, bafflers, and internal upward-pointing pipes,
all constructed, arranged, and operating in the manner set forth, and as represented.
Dated this 29th day of June 1896.
WILLIAM J. BAKER,
Peasholme House, Scarborough, Agent for the Applicant.