IMPROVEMENTS IN APPARATUSSES FOR MEASURING THE SUPPLY OF WATER PASSING THROUGH PIPES
Year: 1874

page_text: LETTERS PATENT to Robert Gottheil, of the International Patent
Office, 126, Linden Str., Berlin, Civil Engineer, for the Invention of
"IMPROVEMENTS IN APPARATUSSES FOR MEASURING THE SUPPLY OF WATER
PASSING THROUGH PIPES."-A communication by Gottfried Stumpf, of
Berlin, Prussia, Engineer.
Sealed the 2nd October 1874, and dated the 16th April 1874.
.PROVISIONAL SPECIFICATION left by the said Robert Gottheil at
the Office of the Commissioners of Patents, with his Petition, on
the 16th April 1874.
I, ROBERT GOTTHEIL, of the International Patent Office, 126, Linden
Str., Berlin, Civil Engineer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN APPARATUSSES FOR MEASURING THE SUPPLY OF
WATER PASSING Through Pipes,” to be as follows:-
This Invention relates to a water meter so constructed and combined
with a regulating nozzle on the pipe which supplics it that it is capable
of.registering the flow of a very small quantity of water as well as of
considerable quantities.

page_text: The casing of the improved meter consists of two compartments, the
lower compartment containing a wheel caused to rotate by the flow of
the water, and the upper part containing the gearing worked by the said
wheel and moving indices which are seen through a glass forming the
cover of the upper compartment. These two compartments are separated
by a partition through a hole, in which passes the spindle of the wheel,
and it is preferred to keep the upper compartment filled with oil for the
purpose of lubricating the registering gear and of preventing water
from leaking up from below past the driving spindle. The lower com-
partment is of cylindrical form, the periphery concavely rounded to
the shape of the inflow and outflow pipes which enter and leave the
compartment in a tangential direction. In this compartment is mounted
a wheel having six vanes or floats made nearly to fit the cavity of the
compartment. These vanes project from a central boss, and present
between them spaces which are hollowed into the boss in a curved form.
Parts of the edges of the vanes and of the sides of the boss are hollowed
out so as to give clearance between them and the top and bottom of the
compartment for facilitating the rotation of the wheel. The wheel is
fixed on a spindle pointed at the lower end, which bears in a countersunk
hole in a steel bush fixed on the lower side of the compartment. The
upper part of the spindle passes through a hole in a deep boss formed
on the cover of the lower compartment into the upper compartment.
On the upper projecting part of the spindle is fixed a worm which gears
with a worm wheel, and this wheel is geared to the several indices in
any desired proportion so as to register the number of revolutions of the
wheel, and thereby determine the quantity of water that flows through
the lower compartment. The inflow and outflow pipes, as has been
already stated, are tangential to the periphery of the lower compartment.
In the inflow pipe is fixed a regulating nozzle, which is of the following
construction :-It consists of a piece of tapered pipe of thin flexible
metal, in which a number of slits are cut from the small end along the
conical part. The part so slit is covered by a piece of caoutchouc tube,
the elasticity of which acting in conjunction with the clasticity of the
metal tends to keep the mouth of the nozzle small, except when the
inflowing stream has such pressure as to expand it, the separate tongues
of the metal being in that case bent outwards, thus affording a greater
area of discharge passage for the larger stream. The caoutchouc tube
may be placed inside instead of outside the slit metal tube; also for the
caoutchouc tube may be substituted a second split nozzle so placed

page_text: inside or outside the main nozzle that the slits of each are covered by
the metal tongues of the other.
By the use of a nozzle such as that described for regulating the
impulse of the water on the vanes of the wheel, the registration effected
by the indices is made to correspond with the quantity of water passing
through the meter, notwithstanding very considerable variations in the
velocity and pressure of the steam.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Robert Gottheil in the Great Seal Patent Office on
the 6th October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
GOTTHEIL, of the International Patent Office, 126, Linden Str., Berlin,
Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixteenth day of April, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Robert Gottheil, Her special
license that I, the said Robert Gottheil, my executors, administrators;
and assigns, or such others as I, the said Robert Gottheil, my exe-
cutors, 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
66 IMPROVEMENTS IN APPARATUSES FOR MEASURING THE SUPPLY OF WATER PASSING
THROUGH PIPES," a communication to me by Gottfried Stumpf, of Berlin,
Prussia, Engincer, upon the condition (amongst others) that I, the
said Robert Gottheil, 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,

page_text: '
NOW KNOW YE, that I, the said Robert Gottheil, 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, reference being had to the accom-
panying Sheet of Drawings and to the figures and letters marked thereon,
that is to say :-
This Invention relates to a water meter so constructed and combined
with a regulating nozzle on the pipe which supplies it that it is capable
of registering the flow of a very small quantity of water as well as of
considerable quantities.
The construction of the said apparatus is shown on the accompanying
Sheet of Drawings, in which Fig. 1 shows a vertical section.
Fig. 2, a plan, with the upper part of the apparatus removed; and
Figs. 3 and 4 shew detached views of the regulating nozzle.
The casing of the improved meter consists of two compartments, the
lower compartment a containing a wheel A caused to rotate by the flow
of the water, and the upper part c containing the gearing worked by the
said wheel and moving indices, which are scen through a glass d forming
the cover of the upper compartment. These two compartments are
separated by a partition m through a hole, in which passes the spindle f
of the wheel, and it is preferred to keep the upper compartment filled
with oil for the purpose of lubricating the registering gear and of pre-
venting water from leaking up from below past the driving spindle.
The lower compartment a is of cylindrical form, the periphery concavely
rounded to the shape of the inflow and outflow pipes h, i, which enter
and leave the compartment in a tangential direction. In this compart-
ment is mounted the wheel A, having six vanes or floats made nearly to
fit the cavity of the compartment. These vanes project from a central
boss and present between them spaces which are hollowed into the boss
in a curved form. Parts of the edges of the vanes and of the sides of
the boss are hollowed out as indicated at e, e, so as to give clearance
between them and the top and bottom of the compartment for facilitating
the rotation of the wheel. The wheel is fixed on a spindle f pointed at
the lower end, which bears in a countersunk hole in a steel bush b fixed
on the lower side of the compartment. The upper part of the spindle
passes through a hole in a deep. boss formed in the cover of the lower
compartment into the upper compartment. On the upper projecting.

page_text: part of the spindle is fixed a worm g, which gears with a worm wheel,
and this wheel is geared to the several indices in any desired proportion
so as to register the number of revolutions of the wheel, and thereby
determine the quantity of water that flows through the lower compart-
ment. The inflow and outflow pipes h, i, as has been already stated, are
tangential to the periphery of the lower compartment. In the inflow
pipe is fixed a regulating nozzle k, which is of the following construc-
tion-It consists of a piece of tapered pipe of thin flexible metal k,
Figs. 3 and 4, in which a number of slits are cut from the small end
along the conical part. The part so slit is covered by a piece of
caoutchouc tube, the elasticity of which acting in conjunction with the
clasticity of the metal tends to keep the mouth of the nozzle small, as
shewn at Fig. 3, except when the inflowing stream has such pressure as
to expand it, the separate tongues of the metal being in that case bent
outwards, as shown at Fig. 4, thus affording a greater area of discharge
passage for the larger stream. The caoutchouc tube may be placed
inside instead of outside the slit metal tube; also for the caoutchouc
tube may be substituted a second split nozzle so placed inside or outside
the main nozzle that the slits of cach are covered by the metal tongues
) of the other.
By the use of a nozzle such as that described for regulating the
impulse of the water on the vanes of the wheel the registration effected
by the indices is made to correspond with the quantity of water passing
through the meter, notwithstanding very considerable variations in the
3 velocity and pressure of the stream.
The compartment c of the above described apparatus may be con-
veniently made with the partition m cast in one piece therewith, and
below this it is provided with a cylindrical projection fitting into a
circular recess in the compartment a, and rounded internally, as shewn,
thus forming the upper part of that compartment. The two compart-
ments are provided with flanges secured together by screws, the joint
being rendered water-tight by packing, as shewn. The upper end of the
compartment c has a screw thread formed on it, on which is screwed a
screw cap for securing the glass cover d, the joints being rendered
5 water-tight by packing.
A stand F is screwed on to the compartment a for fixing the apparatus

page_text: .
Having thus described the nature of the said Invention and in what
manner the same is to be performed, I claim the use of a water meter
wherein the impulse of the water is made to act upon a vane wheel
giving motion to a counter, the impulse of the water being regulated by
a nozzle so arranged that the size of its orifice is made to vary auto-
matically, according as the velocity and pressure of the water flowing
through the meter vary, substantially as herein described.
In witness whereof, I, the said Robert Gottheil, have hereunto
set my hand and seal, this Eighteenth day of September, in the
year of our Lord One thousand eight hundred and seventy-
four.