Improvements in Meters for Water and other Liquids.
Year: 1893

page_text: Date of Application, 16th Jan., 1893
Complete Specification Left, 12th Oct., 1893-Accepted, 18th Nov., 1893
· PROVISIONAL SPECIFICATION.
Improvements in Meters for Water and other Liquids.
I, BENJAMIN JOSEPH BARNARD MILLS, of 23 Southampton Buildings, in the
County of Middlesex, Patent Agent, do hereby declare the nature of this invention,
(a communication to me from Henri Rostagnat Junior, Contractor, of 52 Cours
Gambetta, Lyons, in the Republic of France), to be as follows, reference being
had to the accompanying drawing and to the figures and letters marked thereon:-
The meter forming the subject of the present invention is of that class in which
all the liquid to be measured passes a reaction wheel, screw or turbine, the number
of turns of which measures the quantity of liquid delivered.
The invention consists in rendering constant the speed of the liquid in the
interior of the wheel, turbine or screw, whatever may be the variations in the
delivery or in the pressure of the incoming liquid, from which it results that
the measuring apparatus, by working always under exactly the same conditions,
will give indications exactly in proportion to the delivery.
The accompanying drawing shows the arrangement employed to realise this
object; it represents two vertical sections drawn on the axis of the apparatus in
two planes at right angles to each other.
The cylindrical case of the meter is formed of three pieces, forming four super-
posed compartments A B C D. The upper compartment D, closed by a sheet of
glass, contains the counting apparatus, which may be of any desired system; the
wheel, turbine or screw E is mounted in the third compartment C within a circular
envelope K whose lower part communicates freely with the lower compartment A
by means of channels a a Figure 2. The wheel, turbine or screw transmits its
motion to the counting apparatus by an arrangement of endless screws which give
motion to the vertical shaft e, which latter passes through the bottom of the
compartment D through a stuffing box. The compartment B is divided into two
parts by a piston P moving without friction in the interior of the cylindrical
envelopes FF. The weight of this piston is made equivalent to a column of liquid
of about 50 centimeters, but which may be varied according to circumstances; its
friction need not be taken into account, the tightness being obtained by a flexible
sleeve of caoutchouc G secured at one end to the envelope F and at the other
end to the piston.
'
The liquid to be measured enters by the passage L, Figure 1, which opens
below the piston P; the outlet is by the passage M, which communicates both
with the space above the piston and with the compartment C by means of
openings arranged outside the envelope K of the turbine.
To the piston P is suspended by a spring H, a valve I which closes the
opening J, causing the space below the piston to communicate with the com-
partment A. and with the space below the turbine, screw or wheel; this valve
is pressed to its seat by the pressure of the liquid entering at L, diminished by the
pressure which may exist below this valve, whose seat is of a diameter greater than
the opening.
The following is an explanation of the working of the apparatus.
The liquid arriving by the passage L, raises the piston, stretching the spring H;
the valve I remains upon its seat until, by the spring being sufficiently stretched,
or, in case of the insufficiency of the spring, by the piston itself coming against the
head of the rod d, it is raised from its seat and then, by the action of the spring, it
is placed just below the piston, which has become raised to a greater or less extent,
as shown at Figure 2. The liquid then enters the compartment A and, by the
channels a a,
is delivered to the wheel, turbine or screw, which it passes and then

page_text: escapes by the openings ff and the outlet passage M. But as the wheel, turbine
or screw delivers more liquid than the entrance passage can supply, the piston
again descends by the action of its weight and again places the valve I on its seat.
The wheel, turbine or screw then ceases to be supplied, the pressure is re-established
below the piston, which again rises and the same effects are repeated.
It will be remarked that as soon as the valve I gives passage to the liquid, this
latter, not arriving in quantity equal to the delivery, is forced to the wheel, turbine
or screw only by the weight of the piston P, and that this weight, which is always
alike, will give to the wheel, turbine or screw an always similar motion and
consequently indications strictly exact.
In certain cases the weight of the piston may be replaced or increased by a spring,
but it is preferable to work by weight as its action is always the same.
Dated this 16+1
2000
B. J. B. MILLS,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in Meters for Water and other Liquids.
I, BENJAMIN JOSEPH BARNARD MILLS of 23 Southampton Buildings in the
County of Middlesex, Patent Agent, do hereby declare the nature of this inven-
tion, a communication to me from Henri Rostaguat Junior, Contractor of 52 Cours
Gambetta, Lyons, in the Republic of France, and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement, reference being had to the drawings accompanying my Provisional
Specification and to the figures and letters marked thereon:-
The meter forming the subject of the present invention is of that class in which
all the liquid to be measured passes a reaction wheel, screw or turbine, the number
of turns of which measures the quantity of liquid delivered.
The invention consists in rendering constant the speed of the liquid in the
interior of the wheel, turbine or screw, whatever may be the variations in the
delivery or in the pressure of the incoming liquid, from which it results that
the measuring apparatus, by working always under exactly the same conditions will
give indications exactly in proportion to the delivery.
The drawings show the arrangement employed to realise this object, they
represent two vertical sections of the apparatus drawn on the axis of the apparatus
in two planes at right angles to each other.
The cylindrical case of the meter is formed of three parts, forming four super-
posed compartments A. B. C. D.
The upper compartment D which is closed by a sheet of glass contains the
counting apparatus which may be of any desired system, the wheel, turbine or
screw E, is mounted in the third compartment C within a circular envelope K
whose lower part communicates freely with the lower compartment A by means of
channels a. a Fig. 2. The wheel turbine or screw transmits its motion to the
counting apparatus by an arrangement of endless screws which give motion to the
vertical shafte which latter passes through the bottom of the compartment D
through a stuffing box.
•
The compartment B is divided into two parts by a piston P moving without
friction in the interior of the cylindrical envelopes F F. The weight of this piston
is made equivalent to a column of liquid of about 50 centimeters, but which may
be varied according to circumstances, its friction need not be taken into account,
the tightness being obtained by a flexible sleeve of caoutchouc G secured at one
end b to the envelope F and at the other end 6' to the piston.
The liquid to be measured enters by the passage L. Figure 1. which opens below
the piston P, the outlet is by the passage M which communicates both with the

page_text: space above the piston and with the compartment C by means of openings f. f.
arranged outside the envelope K of the turbine.
To the piston P is suspended by a spring H, a valve I which closes the opening J,
causing the space below the piston, to communicate with the compartment A. and
with the space below the turbine, screw or wheel; this valve is pressed to its seat
by the pressure of the liquid entering at L, diminished by the pressure which may
exist below this valve whose seat is of a diameter greater than the opening.
The following is an explanation of the working of the apparatus.
The liquid arriving by the passage L, raises the piston, stretching the spring H,
the valve I remains upon its seat until, by the spring being sufficiently stretched,
or in case of the insufficiency of the spring, by the piston itself coming against the
head of the rod d, it is raised from its seat and then by the action of the spring it
is placed just below the piston which has become raised to a greater or less extent
as shown at Figure 2.
The liquid then enters the compartment A and by the channels a. a is delivered
to the wheel, turbine or screw which it passes and then escapes by the openings ƒƒ.
and the outlet passage M. But as the wheel, turbine or screw delivers more liquid
than the entrance passage can supply, the piston again descends by the action of
its weight and again places the valve I on its seat.
The wheel, turbine or screw then ceases to be supplied, the pressure is
re-established below the piston which again rises and the same effects are
repeated.
It will be remarked that as soon as the valve I gives passage to the liquid, this
latter not arriving in quantity equal to the delivery is forced to the wheel turbine
or screw only by the weight of the piston P, and that this weight, which is always
alike, will give to the wheel turbine or screw an always similar motion and
consequently indications strictly exact.
In certain cases the weight of the piston may be replaced or increased by a
spring, but it is preferable to work by weight as its action is always the same.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A liquid meter in which the liquid to be measured gives motion to a reaction
wheel, screw or turbine of different proportions according to the quantity to be
delivered, but always under the same conditions of speed, which result is obtained
by causing the liquid to enter underneath a piston charged with a weight or acted
upon by a spring, which forces the liquid into the meter under the sole charge of
the weight or spring substantially as herein shown and described.
2. A liquid meter constructed substantially as herein shown and described and
for the purpose stated.
Dated October 19th 1902