Improvements in Water Meters.
Year: 1897

page_text: Date of Application, 24th Dec., 1897-Accepted, 27th Aug., 1898
Improvements in Water Meters.
I, HANS REISERT, of 34, Huhnsgasse, Cologne on the Rhine, Province of the
Rhine, German Empire, Engineer, do hereby declare the nature of this my inven-
tion, and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:-
My invention relates to machines for measuring fluid, especially feed-water
for boilers and indicating the quantity which has passed through the apparatus.
The invention consists in the combination of two valves. One of these valves
is arranged within the feed-pipe in such a manner that it is raised by the pressure
of the feed-water to be measured and that it is closed if no water passes through
the pipe. The other valve is placed in an auxiliary pipe through which water at
constant pressure or head is conducted and has a smaller size than the valve above
mentioned. The two valves are so connected together that the quantity of water
which escapes through the second valve is directly proportional to the quantity
of water which passes through the first valve.
This invention further consists in the detailed construction and combination
of the parts herein after fully described and claimed.
In the drawings Fig. 1 is a horizontal section through the apparatus while Fig. 2
is a vertical section of the same.
A C are parts of the feed-pipe through which the water to be measured is obliged
to pass in the direction indicated by the arrows M M. B is a case placed between
the two branches A C of the feed-pipe, and containing a valve N. This valve N
is provided with the spindle O the end of which is supported in the guide P. The
spindle O is loosely connected with the lever J fastened to the axle K the one end
of which passes through the wall of the case B. To this end is secured the lever Q
bearing the rod R which latter is attached to the stem S of the valve H. The
space beneath the seat of valve H is connected with a vessel E by means of the
pipe G. The space above the valve-seat is provided with a pipe T finishing at
the top of a gauge-vessel L to which a gauge-glass V is secured.
In the interior of the vessel E a float F is supported by the guide W and by
the pipe D the other end of which is leads to the case B.
In another modification, shown in dotted lines, the water for vessel E is taken
from a reservoir Y by means of pipe D2, and in a further modification, likewise
represented by dotted lines, the water is conducted to the vessel E through pipe D¹
finishing below the valve N.
The operation of the apparatus is as follows. When no water is passing through
the feed-pipe A C, the valves N and H are both closed and no fluid escapes from
the case B through the pipe D so that the level of the water contained in the
reservoir has always the same height, the float F closing the mouth of the pipe D
by means of the top part Få as soon as the level of the water rises up to the pre-
scribed height, while the mouth of pipe D is opened at once when the level
of the water is lower than the normal level.
When any water passes through the feed-pipe A C the valve N is raised to a

page_text: certain extent and held open for the passage of the water for a certain space of
time. This opening of valve N operates the valve H by means of the
mechanism 0 J K Q R S and a certain quantity of the water contained in the
reservoir E is allowed to escape through the pipe T and to enter into the gauge-
vessel L.
Since the weight of valve N and the pressure exercised by the weighted
lever J is always the same the valve N will rise more or less according to the
velocity of the water passing through the feed-pipe A C. This stroke of the
valve Ň is transmitted to the valve H in the proportion given by the lengths of
lever J and lever Q. Thus, the quantity of water passing through the valve His
at any moment always directly proportional to the quantity of water passing
through the feed-pipe A C at the same moment. The valves A and H being held
open through the same spaces of time the quantity of water which escapes from
the reservoir E into the gauge-vessel L in a given time will be directly proportional
to the quantity of water which has passed through the feed-pipe and this quantity
will be indicated on the gauge-glass by the level of the water.
For finding the quantity passed through the feed-pipe the quantity indicated
on the gauge-glass must be multiplied by a constant number which depends upon
the sizes of the valves N and H, upon the lengths of the lever J and Q and upon
the velocity of the water when it is passing the valves N and H respectively. It
will be understood that in spite of the changing velocity of the feed-water
within the feed-pipe-the velocity of passing the valve N will always be the same
In fact the
as the pressure exercised by the weighted-lever is a constant one.
greater the velocity of the water passing the feed-pipe A. C, the more the valve N
owing to the constant pressure of lever J-will be lifted. Thus, the opening of
the valve is increased so that the feed-water is allowed to pass this opening with
less velocity than would be the case if the opening were always the same.
By this
means the velocity of the water passing the valve N is kept constant.
velocity of the water passing the valve H is likewise always the same as the level of
the water contained in the reservoir E is never changed. It consequently follows
that the said number is in fact a constant one.
The
In lieu of the gange-vessel L may be provided a tilting-vessel in combination
with a device registering the oscillations of said vessel.
Fig. 3 is a vertical section of this mechanism and the one half of Fig. 4 shows
a plan view of the same with the cover taken off while the other half represents a
horizontal section.
The vessel A¹ furnished with the counter-weight B is loosely suspended at 01 01
on the ends of a forked lever C¹ which is pivoted at D' D1 and bears the counter-
weight E¹. Both these counter-weights are adjustable. A third counter-weight F
of cylindrical shape is supported by the pieces H H¹ and by the guides G¹ G¹
attached to the walls of the case J. On the cover of the case there is erected a
small vessel K¹ with the valve M¹ the stem of which rests upon the lug N' secured
to the bottom of the tilting-vessel A¹
The water coming from pipe T (Figs. 1 and 2) enters into the small vessel K¹
and descends into the tilting-vessel A¹ when the latter is kept in its normal
position so that the valve M¹ is opened. The water collects in the lowest part
of the tilting-vessel in such a manner that the centre of gravity lies very much
to the right (with reference to Fig. 3). In consequence thereof, the vessel A
will not turn on the pivots 01 01 but only sink the lever C¹ turning on its
pivots D¹ D¹ and the counter-weight E rising. At the same time the cylindrical
weight F left suspended in the guides G¹ G¹ whereby the oscillation of the lever C
is temporarily stopped. In the corresponding position of the tilting-vessel A',
the valve-stem sliding upon the lug N¹ descends to such a degree that the valve M
is closed. Nevertheless, water is allowed to pass the valve as the latter is provided
with a small channel P¹ through which the water can very slowly drop into the
tilting-vessel. The lever C¹ together with the vessel A' continues its turning on
the pivots D D¹ while the cylindrical weight F¹ remains upon the guides Gi G

page_text: The centre of gravity of the water contained in the tilting-vessel being, however,
displaced more and more to the left finally takes such a position that the tilting-
vessel A¹ itself overturns and the water flows to the bottom of the case J. The
counter-weights B¹ and E¹ then return the whole mechanism to its normal position.
The water leaving the tilting-vessel enters into the chamber Q1 thus forcing
the float R¹ to rise and to operate by means of levers S¹ T the driving-shaft g¹ of
the registering device Win such a manner that the said mechanism acts
independently of the tilting mechanism.
Obviously, an exact working is obtained as the weight of the water entering the
tilting vessel is very slowly increased when the vessel is about to overturn as the
counter-weight F¹ being left suspended in the guides G¹ G¹ prevents the lever C¹
and the vessel A' from oscillating violently.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:
1. Improvements in water-meters, consisting in the combination of a valve
arranged in the conduit of the fluid to be measured, a second valve of smaller size
arranged in the conduit of a reservoir with constant level, and levers of different
lengths connecting both valves, substantially as described and for the purpose
set forth.
2. Improvements in water-meters, consisting in the combination of a valve
arranged in the conduit of the fluid to be measured, a second valve arranged in
the conduit of a reservoir with constant level, levers of different lengths connect-
ing both valves, and a gauge-vessel placed below the second valve, substantially
as described and for the purpose set forth.
3. Improvements in water-meters, consisting in the combination of a valve
arranged in the conduit of the fluid to be measured, a second valve arranged in
the conduit of a reservoir with constant level, levers of different lengths connect-
ing both valves and a tilting and registering device, substantially as described
and for the purpose set forth.
4. Improvements in water-meters, consisting in the combination of a
second
valve arranged in the conduit of the fluid to be measured, a
valve arranged in the conduit of a reservoir with constant level,
levers of different lengths connecting both valves the one of such levers
being provided with a weight and a tilting and registering device, substantially as
described and for the purpose set forth.
5. Improvements in water-meters, consisting in the combination of a valve
arranged in the conduit of the fluid to be measured, a second valve arranged in the
conduit of a reservoir with constant level, levers of different lengths connecting
both valves the one of such levers being provided with a weight, a tilting-vessel
supported by a lever adapted to oscillate in vertical direction and a registering
device, operated by means of a float raised by the water coming from the tilting-
vessel in such manner that the registering device acts independently of the tilting-
mechanism, substantially as described and for the purpose set forth.
1
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* Tab.. 100
GEO. THOS. HYDE,
No. 1, Broad Street Buildings, Liverpool Street, E.C.,
Agent for Applicant.