AN IMPROVED METER FOR LIQUIDS
Year: 1875

page_text: LETTERS PATENT to Charles Marryat Elborough, of No. 17, King's
Arms Yard, in the City of London, Solicitor, for the Invention of
"AN IMPROVED METER FOR LIQUIDS."-A communication from abroad
by Johann Leopolder, of No. 60, Erdbergerstrasse, Vienna, in the
Empire of Austria, Engineer.
Scaled the 4th May 1875, and dated the 4th March 1875.
PROVISIONAL SPECIFICATION left by the said Charles Marryat
Elborough at the Office of the Commissioners of Patents, with his
Petition, on the 4th March 1875.
I, CHARLES MARRYAT ELBOROUGH, of No. 17, King's Arms Yard,
in the City of London, Solicitor, do hereby declare the nature of the
said Invention for "AN IMPROVED METER FOR LIQUIDS," to be as follows:-
It is similar to the ordinary machines now in use, but is furnished
with two fan wheels of vulcanised india-rubber, with a common metal
axle working into cach other as cog wheels. An endless screw on the
common axle connects with an ordinary marking apparatus.

page_text: The machine is regulated by admitting the liquid to the wheel box,
which is enclosed in glass, through a second tube in proportions regulated
by screws.
The machine is supplied with a waste box constructed as an ordinary
stop-cock, with hollow pivot containing a cap divided by a metal strainer, 5
which pivot can be turned to such an angle that all foreign clements
will be retained, and the liquid flow pure through the machine.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Marryat Elborough in the Great Scal
Patent Office on the 4th September 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
MARRYAT ELBOROUGH, of 17, King's Arms Yard, in the City of
London, Solicitor, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of March, in the year
of our Lord One thousand eight hundred and seventy-five, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the, said Charles Marryat Elborough, Her
special license that I, the said Charles Marryat Elborough, my exc-
cutors, administrators, and assigns, or such others as I, the said Charles
Marryat Elborough, 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 Inven-
tion for "AN IMPROVED METER FOR LIQUIDS," a communication to me from
abroad by Johann Leopolder, of 60, Erdbergerstrasse, Vienna, in the
Empire of Austria, Engineer, upon the condition (amongst others) that
I, the said Charles Marryat Elborough, 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

page_text: six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Charles Marryat Elborough, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascer-
tained in and by the following statement thereof, that is to say :-
In inferential liquid meters of the ordinary construction the measure-
ment is effected by the liquid passing over and setting in motion a single
wheel or screw, which cannot be relied upon to work invariably with the
necessary exactitude, and the apparatus for regulating the same is not
effective, and cannot be operated without taking the machine apart, and
the waste box allows impurities to enter the machine and seriously affect
its action, nor can the same be cleaned without taking the whole apparatus
apart. Now the present improved liquid meter is furnished with a
combination of two fan wheels revolving together at the same speed, and
receiving motion from the water or other fluid required to be measured,
and is furnished with a contrivance, by means of which the machine
may be at any time regulated to the utmost nicety without interfering
with its mechanism, and has attached to it a waste box of peculiar
construction, which prevents any foreign element from entering the
machine, and which may be cleaned without taking the apparatus
Figure 1 represents a plan of the meter, showing the dial plate;
Figure 2, an elevation partly in section; Figure 3, a sectional plan; and
Figure 4, an end view thereof.
The machine is enclosed in a brass or other non-corrosive metal case,
and is furnished with two fan wheels a, a, the blades of cach of which
work midway between those of the other in a somewhat similar manner
to ordinary cog wheels, but do not touch each other.
In order to ensure the free working of these two wheels at equal
speeds cach wheel a has fixed on the axis thereof a toothed pinion b,

page_text: which pinions b, b, take into and give motion to two cog wheels c², c',
fixed on a common axle c, on which is also formed or fixed an endless
screw c², which gives motion by means of a worm wheel d and pinion d
to a toothed wheel e¹ fixed on the lower end of the first counting spindle e
of an ordinary counting apparatus.
The liquid to be measured enters the machine through the inlet tube g,
and passes through the channels g¹, g', into the wheel box h, where it
causes the two wheels a, a, to revolvo with the same rapidity as that
with which it is itself moving, and eventually finds an exit at i.
The regulating contrivance consists of a tube j furnished with a
screw, by turning which screw a greater or lesser amount of liquid is
admitted through the tubej into the wheel box / where, as shown at
Figure 3, it acts in an opposite direction on the two fan wheels a, a, and
causes them to move more slowly. The wheels c¹, d, and e¹ are pre-
ferably made of vulcanite or hard india-rubber. The dial box is covered
with a strong plate of glass in order that the amount of liquid which has.
passed through the machine may be read off on the dial plate. The
waste box is constructed as an ordinary stop-cock, with the exception.
that the plug m is hollow, and contains a loose receptacle n divided into
two compartments by a metal sieve. If this plug be turned so that the
sieve occupies a diagonal position any dirt or foreign elements in the
liquid which is admitted at 9* will be retained in the sieve, and the.
liquid will flow pure through the passages 9¹, 9, and j into the
machine.
When the waste box requires to be cleaned tho plug m must be turned.
to an angle of 90°, and the top m' screwed off, when the receptacle 12
may be easily lifted out and cleaned, and as casily restored.
Having now described the nature of the said Invention, and the mode
in which the same is carried into effect, I would have it understood that
I do not claim any of the parts or any use of materials herein-before
described which taken separately are common to liquid meters now in
usc, but what I do claim as the said Invention is,―
The improved construction of liquid meter, by which much greater
exactitude is secured in the measurement of liquids by the employment
of a combination of two wheels moved at equal speeds by the liquid to
be measured, substantially as herein shown and described,

page_text: I also claim the mode herein described, by which the meter is capable
of regulation with greater ease to a greater degree, of nicety, and without
any interference with its mechanism, by the employment of a counter-
acting stream of liquid to act on the wheels to retard their motion, such
counteracting stream passing through a passage j into the wheel box,
and the bulk thereof being regulated by a screw.
I also claim the new construction of the waste box, whereby the
cleansing thereof may be effected without taking the meter to pieces or
disconnecting the meter.
In witness whereof, I, the said Charles Marryat Elborough, have
hereunto set my hand and seal, this Third day of September, in
the year of our Lord One thousand eight hundred and seventy-
five.