IMPROVEMENTS IN VENTILATING, HOUSES, SHIPS AND OTHER STRUCTURES
Year: 1884

page_text: I JOHN SMITH SWEET of 8 Carter Street Walworth in the County of Surrey,.
House Decorator do hereby declare the nature of my invention for IMPROVEMENTS
IN VENTILATING, HOUSES, SHIPS AND OTHER STRUCTURES to be as follows:-
:-
In every apartment, I fix a Ceiling Center piece (or otherwise) from this between
the floor fix an Air tube carried into a shaft, which terminates under the roof in
this shaft, I fix my Ventilator. The inside of this Ventilator, is in sections or tubes,
which causes a strong up current of air. Under the roof I fix my injector, the
outer end being on the roof or wall, it is tapered, and has its smaller entrance into
the air shaft, between it and the Ventilator at given points. The pressure of air
through them will drive out all foul air in the Ventilator it combines the two right
means of a pure and rapid Ventilation, as an extractor and expeller without any
draught in the rooms. They can be fixed under the roof or external on the roof
or walls.

page_text: I, JOHN SMITH SWEET of 8 Carter Street, Walworth in the County of Surrey,
House Decorator do hereby declare the nature of my invention for IMPROVEMENTS
IN VINTILATING, HOUSES, SHIPS AND OTHER STRUCTURES and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
In every apartment to be ventilated I fix a ceiling centre-piece, or other opening,
perforated or otherwise. From this opening I carry, between the ceiling and the
floor above, an air-tube leading into an air-shaft, which is fitted in the most
convenient part of the house or building for attaching the different tubes leading
from the rooms to be ventilated. This perforated centre piece or other opening in
the ceiling is made air-tight on the inside, except where the air-tube (which I
generally make in a tapered form) is attached. These tubes have an upward bend
as they enter the air-shaft, and the air which passes through them is thus prevented
from striking against the sides of the air-shaft, or rebounding. The air-shaft is
carried up through the building and terminates under the roof. On the top of this
air-shaft I fix my tubed ventilator, consisting of a number of tubes of suitable
shape surrounded by a large tube. The effect of this arrangement is such that an
up-current is caused from the rooms below, which at once becomes an extractor.
I now apply my system of expulsion in the following way :-
For this purpose I use my injectors. These are tubes made in a tapered form,
having their larger openings on the outside of the roof or wall of the building.
I generally place these injectors under the roof on the upper ceiling joists, but I do
not confine myself to this position and I can place them in any convenient place.
The smaller ends of my injectors open with expanding nozzles into the air-shaft
immediately underneath the ventilator. A current of air is set up from the outsido
air through the injector into the air-shaft, and then upwards through the ventilator.
This current will naturally force along with it the foul air collected in the top part
of the air-shaft and the ventilator, and this in its turn will cause a continuous
current to come from the different rooms. At the bottom of the air-shaft I fix a
small gas jet or spirit lamp, which can be lit at any time, should atmospheric
conditions require it. Inside the air-tubes I place valves, worked by bell-pulls
attached to them by wires, and by their means the ventilation of all or any of the
rooms can be regulated or entirely stopped.
My ventilator acts on the principle of Extraction and Expulsion, which is the
true means of a complete and rapid ventilation, the foul. air being eliminated by
the injectors, and not from the doors or windows. No draughts are caused, and
the temperature of the room can be regulated by adjusting the valves in the
air-tubes.
The apparatus is so simple that no parts of it can get out of order, for it does
away with the use of cowls, turrets, and revolving apparatus, which frequently mar
the appearance of buildings, and soon get out of order.
It is applicable externally or internally to large or small structures. There is no
limit to the number of rooms, each room being ventilated independently of the
others.
It is easily applied to old buildings and structures as well as new.
It is very durable, and consequently cheap. It is easily and cheaply applied to
smoky chimneys, expelling the smoke rapidly, and greatly improving the draught..
It can be effectually applied to drains, as it prevents the foul air from ascending.
Its application to carriages, mines, closets, and ships is equally effectual, and it can
be quickly and cheaply applied to them.

page_text: 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 I do
not confine myself to the precise details herein laid down, as the same may be
varied without depreciating from the peculiar character of my invention, but what
I claim is:-
:-
1 The arrangement of a tubed Ventilator at the top of an air shaft, to which
the foul air from the rooms is conducted substantially as herein described.
2 The application to ventilating purposes of the injecting tubes substantially in
the manner and for the purpose herein described.
3 The combination of the tubed ventilator, with the injecting tubes substantially
as herein described.