IMPROVEMENTS IN MEANS OR APPARATUS POR EFFECTING A REGULAR SUPPLY A Annxpanse DEWING BAD VARIOUS PURPOSES
Year: 1863

page_text: LETTERS PATENT to George Stevens, of Malvern Cottages, Portland
Place North, Clapham Road, in the County of Surrey, for the Invention
of "IMPROVEMENTS IN MEANS OR APPARATUS POR EFFECTING A REGULAR SUPPLY
A
Annxpanse DEWING BAD VARIOUS PURPOSES"
Sealed the 29th January 1864, and dated the 4th August 1863.
PROVISIONAL SPECIFICATION left by the said George Stevens at the
Office of the Commissioners of Patents, with his Petition, on the 4th
August 1868.
I, GEORGE STEVENS, of Malvern Cottages, Portland Place North, Clapham
Road, in the County of Surrey, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MEANS OR APPARATUS FOR EFFECTING A
REGULAR SUPPLY OF AIR OR AERIFORM FLUIDS FOR VARIOUS PURPOSES," to be as
follows:-
Within a suitable outer chamber I apply an internal vessel, which is affixed
to an axis carried by the outer chamber, and is formed into one or more spiral
chambers or compartments somewhat as the thread or the threads of a screw
with inlet and outlet passages. The outer chamber is partly filled with water
or other fluid, which also partly fills the chamber of the internal vessel, and
this outer chamber is also provided with inlet and outlet passages, the latter.
passing to within the inner vessel. Motion being given to the internal vessel.
by a pulley and weighted cord or band, or by suitable wheelwork, air will flow
in by the inlet passages, and be conducted along the internal screw-like

page_text: chamber or chambers to the outlet passage, and thence by suitable pipes or
conduits it may be conducted in a uniform stream for various purposes, such
as for the supply of atmospheric air to the photogenic gas light, or for
supplying air to apartments and other places. The speed and consequent
pressure of the current may be varied by adjustment of the power employed to
give motion to the internal vessel; and in like manner may other acriform
fluids be acted upon.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Stevens in the Great Seal Patent Office on the
4th February 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
STEVENS, of Malvern Cottages, Portland Place North, Clapham Road, in the
County of Surrey, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of August, in the year of our Lord
One thousand eight hundred and sixty-three, in the twenty-seventh year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said George Stevens, Her special licence that I, the said
George Stevens, my executors, administrators, and assigns, or such others
as I, the said George Stevens, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention
for "IMPROVEMENTS IN MEANS OR APPARATUS FOR EFFECTING A REGULAR SUPPLY OF
AIR OR AERIFORM FLUIDS FOR VARIOUS PURPOSES," upon the condition (amongst
others) that I, the said George Stevens, my executors or administrators,
by.an instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said George Stevens, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:

page_text: understood, I will, by the aid of the accompanying Drawing, proceed to
describe the same.
DESCRIPTION OF THE DRAWING.
Figure 1 shows a longitudinal section, and Figures 2 and 3 two opposite
end views of apparatus arranged to work according to my improvements.
a, a, is the outer chamber, within which is applied the internal vessel b.
This internal vessel being affixed to and supported so as to turn with the shaft
or axis c, which is supported by and so as to be capable of revolving in
bearings carried by the outer chamber a, a. The internal vessel 6 is formed
into spiral chambers or compartments by means of tho partitions d, which are
at their centres connected to the axis c, and at their outer edges to the inside
of the vessel b, whilst they are inclined or coiled somewhat as the threads of a
screw.
In use the outer chamber a will be partly filled with water or other suitable
fluid (the height of which may be regulated by a plug ), which also partly
fills the internal vessel and its compartments, as indicated by the blue tint by
which when air is admitted into the chamber a and allowed to flow into one
end of the internal vessel, and that vessel is caused to revolve in one direction
such air will be caused to traverse the vessel b, and pass out by a passage
provided for it at the opposite end of such internal vessel. is a passage for
the admission of air or aeriform fluid to the interior of the chamber a, and
such air or aeriform fluid is admitted to flow into the vessel 6 by the open end
thereof b', and as that vessel revolves the air or aeriform fluid is caused to
traverse it until it passes away at the end 6 by the pipe f, the end of the
vessel b being closed, except at the small opening & formed to admit of the
passage of the pipe f. The pipe f communicates with the passage f¹, and
thence with the passage f* in the chamber g, which is provided with water or
other fluid to about the line 9', above which the passage f" opens into that
chamber g. The air or aeriform fluid rising into the chamber g by the pipe f*,
is thence conducted by the pipe h for use. The upper part or cover of the
chamber g is formed by the float h³, the edges h of which dip down into the
fluid in the chamber g, by which arrangement the weight of the floating cover
acts as a regulator to neutralize any irregularity in the flow of air or aeriform
fluid through the apparatus. When required weights may be applied to the
stem of the cover h³, or otherwise.
I give motion to the internal vessel b in the following manner :-Upon the

page_text: axis c is affixed the pinion i, the teeth of which are taken into by the teeth of
the toothed wheel j, which turns freely upon the stud j', and has affixed to it
the pinion k, the teeth of which are taken into by the teeth of the intermediate
wheel, which receives motion from the toothed wheel m, to which is affixed
the drum or cylinder n, upon which is wound the cord o, which passes up
over a pulley p, and carries a weight by which the desired amount of motion
may be obtained; or the power required may be otherwise obtained, and the
speed and consequent pressure of the current may be varied by adjustment of
the power employed to give motion to the internal vessel. A current of air or
aeriform fluid thus obtained may be employed for various useful purposes,
such as for the supply of atmospheric air to the photogenic gas light, or
for supplying air to or withdrawing air from apartments and other places.
Having thus described my improvements and means which I adopt in
carrying the same into effect, I would have it understood that what I claim is,
the adaptation of means or apparatus and mode of working for effecting a
regular supply of air or aeriform fluids, substantially as described.
In witness whereof, I, the said George Stevens, have hereunto set my
hand and seal, this Fourth day of February, in the year of our Lord
One thousand eight hundred and sixty-four.
GEORGE STEVENS. (L.B.)