Agents for the Applicants
Year: 1886

page_text: Date of Application, 23rd June, 1886.
Complete Left, 22nd Mar., 1887.
Complete Accepted, 22nd Apr., 1887.
We, SAMUEL WALLIS, of No. 1, Star Cottage, Galley Hill, and THOMAS WISEMAN,
of High Street, Galley Hill, both of Swanscombe, in the County of Kent, Engineers,
do hereby declare the nature of this invention to be as follows:-
Our invention relates to the manufacture of an improved chimney cowl, and consists
in making the revolving top with wings guarding a lateral opening, in combination
with slits or holes in the side of the top opposite said opening, and through which the
same air current that keeps the smoke exit turned with its back to the wind may pass
freely through said top for the purpose of creating a diminution of atmospheric
pressure therein.
Dated this 23rd day of June 1886.
PHILLIPS & LEIGH,
Agents for the Applicants.
An improved Cowl.
We, SAMUEL WALLIS, of No. 1, Star Cottage, Galley Hill, and THOMAS WISEMAN,
of High Street, Galley Hill, both of Swanscombe, in the County of Kent, Engineers,
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:-
Our invention relates to the manufacture of an improved chimney cowl, and
consists in making the revolving top with wings guarding a lateral opening, in

page_text: combination with slits or holes in the side of the top opposite said opening, and
through which the same air current that keeps the smoke exit turned with its back to
the wind may pass freely through said top for the purpose of creating a diminution of
atmospheric pressure therein.
We attain the objects of our invention by means of the mechanical devices illus-
trated in the following drawing, in which
Fig. 1 is a side elevation.
Fig. 2 is a sectional elevation taken on the line A-B of
Fig. 3, a plan taken on line C-D of Fig. 1; and
Fig. 4 is a detail sectional elevation illustrating the construction of the revolving
head.
E is the revolving head, and, with the crown e and wings ele¹ (or wind-guard),
constitutes the improved cowl.
F, F are a series of holes of any shape, round (as drawn), oval, or rectangular,
formed in the side of the head A opposite the smoke outlet G.
His a bridge picce fixed across the top of the shaft I, from the centre of which
springs the vertical axis h, upon the pointed extremity of which the head E is carried
by the double guide J and bridge piece j.
We do not confine ourselves to the means for supporting the revolving head described
above and illustrated in the drawing, inasmuch we may support it in any well known
and suitable way.
According to the figures, the wind is blowing from the left hand, and the wings e¹, el,
consequently point to the right hand. With a cowl constructed in this way, i.c., with
a revolving head having one smoke exit at the side guarded by two wings, the smoke
cannot be blown down the chimney, but according to our invention it is sucked up,
because the wind blowing through the head E and over the top of the shaft. D causes
and maintains a vacuum therein, and the passage of the smoke up the shaft and out at
the exit G is expedited accordingly.
We are aware that numerous patents have been granted for cowls and revolving
chimney tops, and we wish it to be distinctly understood that we lay no claim to either
a revolving head closed at the top and having openings around it at which the smoke
can escape, nor to the use of a pair of wings guarding the smoke outlet from a
revolving head, but
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what we
claim is,
In the revolving head of a chimney top, the combination of a single smoke exit
formed in one side of said head with a pair of wind guards, one on each side of said
exit, and a series of openings formed in the side of the head opposite to the wind exit,
through which the same air current that keeps the revolving head turned with its
back to the wind may pass freely through the head and out at the wind exit, substan
tially as described.
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