A NEW OR IMPROVED WATER METER
Year: 1885

page_text: 1 LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the Patent
Industrial and Financial Agency 30 Finsbury Pavement London EC do hereby
declare the nature of said invention for "A NEW OR IMPROVED WATER METER."
a communication to me from abroad by Placido Tarda, Manufacturer of 113 Paseo
de Pujadas Barcelona in the Kingdom of Spain to be as follows:-
The object of this invention is a water meter called the Tarda system and
consists of a hollow cylinder of known capacity placed horizontally on a shaft and
oscillating with a balance motion to one side or the other according to the pressure
of the water on an internal piston forward or backward The free capacity of the
cylinder measures the water at either end according to the position of the. piston
which automatically receives measures and delivers the water.
The gear for indicating the quantity used is not the main or essential feature of
this invention registering the amount on dials by hands actuated by a train of
wheels as an ordinary meter.
A flat cylindrical cast iron box resting on a flattened part of the rim, and closed
by means of a cover bolted on to a dange with a rubber plate contains the
measuring apparatus.
A small flat cylinder outside the cover contains the dials and indicating apparatus
visible by means of a glass cover.
An inlet pipe fixed to the box by a flanged nut and rubber washer conducts the
water by means of a short india rubber pipe to a distributing four way cock and
from thence it passes to the measuring cylinder by one of two pipes which enter at
opposite ends.
The plug of this cock has two projecting arms which strike against a stud (fixed
at the bottom of the box) according to the oscillations of the cylinder.
Before either end of the cylinder has finished its downward movement its arm
strikes against the stud and is held while the cylinder completes its motion thus
turning the plug and diverting the course of the water.
The water thus admitted behind the piston pushes it to the other end, expelling
the water in front of it, when its weight overbalances it and by means of the plug

page_text: releases the water at the other end which is thus measured, and diverts the inflow.
behind the piston thus pushing it back again.
The piston may be hollow but should be heavy enough to counterbalance the
water behind it.
Pins pass by means of stuffing boxes through the ends of the cylinder and are
provided with downwardly projecting pieces which catch on hollow bosses and
arrest the motion of the cylinder till the piston has reached the end of its stroke
when it pushes these pins into the slot when the cylinder completes its motion.
Grooves and guides are placed on these pins to prevent them turning when the
projecting piece would not go through the slot.
The axle on which the cylinder oscillates carries at one end a pin which passes
by means of a stuffing box through the cover into the dial case and by means of
a catch moves the first wheel when the end of the cylinder rises but by means of
a spring and pawl does not act when it descends.
Two stops fixed on the bottom of the cylinder limit its motion by striking
against a fixed stop covered with india rubber to prevent noise.
Bevelled bosses above the hollow bosses press the pins in when the end of the
.cylinder rises and prevent its return till pushed out by the piston.
The water is thus alternately admitted measured and delivered by both ends of
the cylinder to the bottom of the box whence it may be drawn off thus forming a
continuous process.
1 ·
1007

page_text: I LORENTZ ALBERT GROTH K.G.V. Civil Engineer and Proprietor of the Patent
Industrial and Financial Agency 30 Finsbury Pavement London E.C. do hereby
declare the nature of said invention for "A NEW OR IMPROVED WATER METER' 33
a communication to me from abroad by Placido Tardá, Manufacturer of 113, Paseo
de Pujadas, Barcelona in the Kingdom of Spain and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
statement:
The object of this invention is a water meter called the Tardá system and
consists of a hollow cylinder of known capacity placed horizontally on a shaft and
oscillating with a balance motion to one side or the other according to the pressure
of the water on an internal piston backward or forward The free capacity of the
cylinder measures the water at either end according to the position of the piston
which automatically receives, measures, and delivers the water.
Fig. 1. is a longitudinal vertical section taken through the axis of the measuring
cylinder showing it in its lowest position.
Fig. 2 is a vertical cross section through the axis of measuring cylinder placed
at half stroke or horizontally.
Fig. 3 represents the dials on the dial plate indicating the consumption of water.
The gear for indicating the quantity of water used is not the main or essential
feature of this invention the amount being registered by hands on dials actuated
by a train of wheels in the ordinary manner.
A flat cylindrical cast iron box F. Figs. 1. and 2 resting on a flattened part of
the rim, and closed by means of a cover y Fig. 2. secured by bolts m to a flange
with a rubber plate to form a water tight joint, contains the necessary apparatus
for measuring the water and also stores it till required.
A small flat cylinder J fastened outside the cover y contains the indicating
apparatus and dials visible by means of a glass cover l.
An inlet pipe A. Fig. 2 fixed to the box by means of a flanged nut n and rubber
washer conducts the water by means of a'short india rubber pipe p to a distributing
four way cock B. from which it passes to the measuring cylinder C by one of two
pipes A or A which enter at opposite ends a¹ or a¹¹ Fig. 1.
The plug B¹ of this cock B. has two projecting arms h h¹ which strike against a
stud or boss m" Fig. 2. according to the oscillations of the cylinder to one side
or another.
Before either end of the measuring cylinder C. has finished its downward
movement one of these arms h or h¹ strikes against the stud m¹¹ and is held while
the cylinder completes its motion thus turning the plug B' and diverting the
course of the water.
The water thus admitted behind the piston D pushes it to the other end
expelling the water in front of it, when its weight overbalances the cylinder C
and by means of the plug, releases the water at the other end (which is thus
measured) and diverts the inflow behind the piston thus pushing it back again.
The piston may be hollow, but should be heavy enough to counterbalance the
water behind it, and be provided with an india rubber packing ring G G³

page_text: Pins c c pass by means of stuffing boxes & d¹ through the ends of the measuring
cylinder C and are provided at their outer ends with downwardly projecting
spurs which catch on hollow slotted bosses f f¹ and arrests the downward
movement of the ends of the cylinder C. till the piston has reached the end of its
stroke when it pushes these pins into the slot in the boss for f¹ through which
the spur passes and the cylinder completes its motion.
The downward motion of the ends of the cylinder C is finally arrested by
arms xx which strike a boss j covered with rubber secured to the centre of
the base.
To prevent the spurs ee from turning during the working of the apparatus and
so fouling the slot they are perforated and slide on guides g g fixed on the
pipes A A Fig. 1.
The axle E on which the cylinder C oscillates carries at one end a pin h" which
passes by means of a stuffing box through the cover y into the dial case J and by
means of a spring arm hand catch moves the first of the train of indicator
wheels (which is a ratchet wheel) when a given end of the cylinder C rises but the
pawl does not act when it descends.
•
Bevelled bossesz z press the pins c in when the end of the cylinder rises so that
when it falls the projection e or e¹ rests on the hollow slotted boss for f¹ till the
piston pushes them outwards into the slot r at the end of its stroke.
•
The outer part of the four way cock B forms part of and oscillates with the
measuring cylinder C.
H. Fig. 2 is a delivery pipe fixed to the box F.
The water is thus alternately admitted measured and delivered by both ends of
the cylinder to the bottom of the box whence it may be drawn off, while the
capacity of the 2 free ends being known are automatically indicated on the dial
plate thus forming a continuous process.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1st A water meter in which the water is measured by a hollow cylinder in the
interior of which acts a piston impelled by the same water in order that its weight
may make the cylinder oscillate round an axle placed across it substantially as and
for the purpose set forth.
2nd A water meter in which the water is measured by a hollow oscillating vessel
of cylindrical or any other shape in which the distribution of water takes place by
means of two pipes fixed to the cylinder alternately supplied with water by the
inlet cock in communication with both by stopping the motion of the plug by
means of a fixed bar or stud while the cylinder to which the other part of the
cock is fixed oscillates thus turning the cock substantially as and for the purpose
set forth.
3rd The whole apparatus for measuring the supply of water combined and
operating as hereinbefore described and illustrated in the drawings.
Dated thio 2nd day of Fahmi