Year: 1888

page_text: Date of Application, 1st Nov., 1888
Complete Specification Left, 21st Feb., 1889
Complete Specification Accepted, 23rd Mar., 1889
I SAMUEL WORSENCROFT of Poynton in the County of Chester Plumber do hereby
declare the nature of this invention to he as follows:-
The object of this invention is to construct an improved cowl or ventilator adapted
to carry off all eflluvia or gases from air shafts drains, ventilating pipes and other
similar places, and at the same time to prevent down draughts in air or ventilating
shafts.
The body of the cowl or ventilator may be made either of a cylindrical or slightly
conical form (the latter being preferred) and it is provided with a number of short
air tubes or passages of a smaller diameter, and preferably of a flattened rectangular
section.
These air tubes are open at the top and bottom and pass through the cylindrical
or conical body of the cowl or ventilator in an inclined direction so that their outer
and lower ends are exposed to the atmosphere outside the body and their inner and
upper ends meet at about the centre of the inside. They are arranged in pairs
alternately, that is to say, one pair will be open externally to (say) the North and
South, and the next pair (say) to the East and West and so on, each pair meeting
in the interior at an angle of about thirty degrees (more or less) and thus an
ascending induced current of air is created up the centre of the cowl or ventilator
and all down draughts are effectually prevented.
Dated this 11th day of December 1888.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: 1 SAMUEL WORSENCROFT of Poynton in the County of Chester, Plumber 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 this invention is to construct an improved cowl or ventilator adapted
to carry off effluvia or gases from air shafts drains, ventilating pipes, and other
similar places, and at the same time to prevent down draughts in air or ventilating
shafts.
The nature of my said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference to
the annexed sheet of drawings and the following explanation thereof.
Fig. 1. on the drawings is a front elevation and Fig. 2. a side view of a cowl or
ventilator constructed according to my improvements, and Fig. 3. a plan view of
the same.
The body a of the cowl or ventilator may be made either of a cylindrical form as
shown, or slightly conical as may be preferred, and it is provided with a number of
short air tubes or passages of a smaller diameter and preferably of a flattened
rectangular shape as shown at Fig. 3.
.
These air tubes bare open at top and bottom and pass through the cylindrical or
conical body a of the cowl or ventilator in a direction inclining upwards and inwards
so that their outer or lower ends are exposed to the atmosphere outside the body a
and their inner and upper ends meet at about the centre of the inside as shown.
They are arranged in pairs alternately that is to say, one pair will be open
externally to (say) the North and South, and the next pair (say) to the East and
West, and so on, each pair meeting in the interior at an angle of about thirty degrees
(more or less) and thus an ascending induced current of air is created up the centre
of the cowl or ventilator and all down draughts are effectually prevented.
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 :-
A cowl or ventilator of a cylindrical or conical shape fitted with short air tubes
open at each end and arranged in pairs the lower ends being outside the shaft and
their inner and upper ends meeting together at an angle in the interior thereof
substantially in the manner and for the purpose hereinbefore more particularly set
forth and illustrated by the drawings annexed.
1000
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.