IMPROVEMENTS IN APPARATUS FOR MEASURING GAS AND OTHER FLUIDS
Year: 1865

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street,
in the City of London, Patent Agent, for the Invention of "IMPROVEMENTS
IN APPARATUS FOR MEASURING GAS AND OTHER FLUIDS."-A communication
from abroad by Jean Theodore Scholte, of Paris, France.
PROVISIONAL SPECIFICATION left by the said Richard Archibald Brooman
at the Office of the Commissioners of Patents, with his Petition, on the
27th May 1865.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, Patent Agent, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN APPARATUS FOR MEASURING GAS AND OTHER FLUIDS,"
to be as follows:-
This Invention consists in constructing liquid, gas, and fluid meters with
an internal drum, carrying a central perforated tube and spiral vanes extending
from the tube to the inner edge of the drum. The drum is free to revolve
upon a shaft extending at back beyond the drum, and carrying a worm which
gears into and works a worm wheel on the shaft of an ordinary gas counting
or registering apparatus. Space is left all round between the outer casing and
the drum. The gas inlet pipe is carried through the front of the drum, and

page_text: is bent upwards; a valve is placed over the top of the inlet pipe, and
communicates by a cross head with two floats. The gas outlet pipe is placed
in the upper part of the casing; there is an inlet pipe for the admission of
water into the apparatus, and an overflow pipe for running off the water,
should it rise beyond the proper level. The meter can only act when the
water is at a certain fixed level, and that level is such that the floats keep the
valve raised from the gas inlet pipe; should the level be below its fixed point,
the floats fall, bring down the valve, and close the inlet of gas; the overflow
pipe prevents the water rising above the fixed level. The working is as
follows The gas entering the drum comes in contact with the spiral
vanes and causes the drum to revolve; on leaving the last vane the gas enters
the space between the water and the case, and flows off through the outlet
pipe. The quantity of gas distributed by the drum at each revolution will
fill the space in the meter not occupied by water, and the shaft on which the
drum revolves causes each revolution to be registered on the ordinary gas
counting apparatus through its worm, driving the worm wheel on the shaft of
such apparatus.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent
Office on the 27th November 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of London, Patent
Agent, send greeting.
WHEREAS Her Most Excellent Majesty Queen Victoria, by Her Letters
Patent,bearing date the Twenty-seventh day of May, in the year of our Lord One
thousand eight hundred and sixty-five, in the twenty-eighth year of Her reign,
did, for Herself, Iler beirs and successors, give and grant unto me, the said
Richard Archibald Brooman, Her special licence that I, the said Richard
Archibald Brooman, my executors, administrators, and assigns, or such others
as I, the said Richard Archibald Brooman, 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 APPARATUS FOR MEASURING GAS AND OTHER FLUIDS,"
(communicated to me from abroad by Jean Theodore Scholte, of Paris, France,

page_text: upon the condition (amongst others) that I, the said Richard Archibald
Brooman, 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 Richard Archibald Brooman, 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 tho
following statement thereof, reference being had to the Drawings bereunto
annexed, that is to say:-
This Invention consists in constructing liquid gas and fluid meters, with an
internal drum carrying a central perforated tube, and spiral vanes extending
from the tube to the inner edge of the drum. The drum is free to revolve
upon a shaft extending at back beyond the drum, and carrying a worm which
gears into and works a worm wheel on the shaft of an ordinary gas counting
or registering apparatus. Space is left all round between the outer casing
and the drum. The gas inlet pipe is carried through the front of the drum
and is bent upwards; a valve is placed over the top of the inlet pipe and
communicates by a cross head with two floats, the gas outlet pipe is placed
in the upper part of the casing, there is an inlet pipe for the admission of
water into the apparatus, and an overflow pipe for running off the water should
it rise beyond the proper level.
Figure 1 of the accompanying Drawings is a longitudinal section, and
Figure 2 a horizontal section of a meter constructed according to this
Invention; Figure 3 is a section through the line X, X; and Figure 4, a
section through the line Y, Y, of Figures 1 and 2. p is the outer casing
of the apparatus; g is an internal drum carrying a central tube e, and spiral
vanes f, extending from the tube e to the inner edge of the drum. The tube
e is formed with perforations m. The drum g is free to revolve upon a shaft
i, the ends of which are supported at k, k. The portion of this shaft beyond
the drum carries a worm n, which gears into and works a worm wheel, as
shewn on the shaft of an ordinary gas counting or registering apparatus; a
is the gas inlet pipe, it is carried through the front of the drum g, and is bent
upwards. A valve 6 is placed over the top of the pipe a, and communicates by
a cross head c, with two floats d, d; o is the gas outlet pipe; q is an inlet pipo
for the admission of water into the apparatus, and is an overflow pipe for
running off the water when above the level 7. The meter can only act when

page_text: Should
the water is at a certain fixed level, that is to say the level 1, which is such
that the floats & keep the valve 6 raised from the gas inlet pipe a.
the level be below its fixed point, the floats d fall, bring down the valve b, and
close the inlet of gas. The overflow pipe r prevents the water rising above
the fixed level. The working is as follows:-The gas entering the drum g,
comes in contact with the spiral vanes f, and causes the drum to revolve; on
leaving the last vane the gas enters the space between the water and the
case p, and flows off through the outlet pipe o. The quantity of gas distributed
by the drum g at each revolution will fill the space in the meter not occupied
by water, and the shaft i on which the drum revolves causes each revolution to
be registered on the ordinary gas counting apparatus through its worm n driving
the worm wheel in the shaft of such apparatus. The characteristic features of
this Invention are:-The drum with spiral vanes caused to revolve by the
flow of gas through the apparatus, the valve with its crosshead and floats,
whereby the gas inlet is closed; should the water get below the proper
working level, and the overflow pipe for running off the water, should it rise
above the proper level. The drum with its spiral vanes may be fitted to the
interior of liquid meters."
And having now described the nature of the Invention, and in what manner
the same is to be performed, I declare I claim constructing apparatus for
measuring gas and other fluids, combined and acting substantially as
herein-before described and represented in the accompanying Drawings.
In witness whereof, I, the said Richard Archibald Brooman, hath here-
unto set my hand and seal, this Twenty-seventh day of November, in
year of our Lord One thousand eight hundred and sixty-five.
the
DROOMAAT
L
R. A. BROOMAN. (..)