Apparatus for Controlling and Registering Quantities of Beer, Spirits, and other Liquids Discharged Through Engines or Cocks.
Year: 1889

page_text: Date of Application, 15th Aug., 1889
Complete Specification Left, 12th May, 1890-Accepted, 21st June, 1890
PROVISIONAL SPECIFICATION.
Apparatus for Controlling and Registering Quantities of Beer,
Spirits, and other Liquids Discharged Through Engines or Cocks.
I, ROBERT JEWELL, of 9 Victoria Road, Battersea Park, Surrey, Gentleman, do
hereby declare the nature of this invention to be as follows:
My invention has for its object to control the quantities of liquid such as beer,
spirits &c. drawn off through engines or cocks and to effect the registration either
of such quantities or of their monetary value.
For this purpose, when applying the invention to beer engines, I, according to one
arrangement, connect the pull or lever of the engine by an arm to a slide that carries
a spring contact which, in sliding up and down, is caused to pass over a series of
fixed contacts situated one above the other, the number of such fixed contacts being
determined by the fractional parts of the total quantity of liquid drawn off by one
complete pull which it is desired to register. The slide or its spring contact is put in
electrical communication with the one terminal of an electrical circuit, and the fixed
contacts are in communication with the other terminal, so that each time a contact is
made, an electrical impulse is passed through the circuit to an electrical registering
mechanisin which may be of any suitable arrangement, but by preference of the con-
struction described in my application bearing equal date herewith, whereby either the
quantity of liquid or the money value thereof is registered.
According to another modification I employ, in place of the above described contact
slide, a piston working in a cylinder, the piston rod having a head at its outer end against.
the underside of which bears a fork or eye on the arm of the pull or lever of the beer
engine, so that each time a quantity of liquid is drawn the piston is raised, after which
it 'descends by gravity, the speed of descent being controlled by regulating an air
discharge on the cylinder.
The rod is not fixed rigidly to the piston, but is so arranged that when it raises
the piston, a head on its lower end is in contact with a part of the piston which is of
insulating material, while when the piston descends, the rod is in metallic contact
therewith. Within the cylinder are a number of insulated metallic contacts connected
to the one terminal of the electric circuit over which the pison passes in ascending
and descending, the other terminal of which circuit is in conducting connection with
the piston rod. Thus on the ascent of the piston, no closing of the circuit is effected,
as the piston rod is not in conducting connection with the piston, but on the descent
of the latter the rod being in conducting connection therewith, a closing of the
circuit is effected each time the piston passes one of the fixed contacts on the cylinder,
such contacts representing any desired fractions of the quantity of liquid drawn off by
each complete pull of the engine lever.
In arranging the controlling apparatus in connection with cocks for drawing off
spirits and other liquids, I construct the same as follows:-
In connection with a nozzle by which the liquid is drawn off, is a cylinder con-
structed to contain a definite maximum quantity of liquid that can be drawn off at
one time. This cylinder has a series of cocks communicating with it at different
levels so that varying quantities of liquid can be drawn off from it, according to which
of the cocks is opener, and all these cocks communicate by branches with a pipe con-
nected to the drawing off nozzle so that for drawing off a certain quantity of liquid,
the corresponding cock on the cylinder is opened.
The cylinder is connected at its lower end by a pipe with the main tank, cask, or
vessel containing the liquid. and this communication is closed by a valve acted on by
a spring so that the valve has to be forced open against the spring in order to fill the
cylinder.

page_text: Connected to the valve is a vertically sliding plate which can be acted upon by
tappets on extensions of the plugs of the cocks, so arranged that on opening any one
of the cocks the slide is not actuated and the valve remains closed, but on closing the
cock, after the discharge has taken place, the tappet forces down the slide and thus
opens the valve so as to allow the cylinder to be filled again.
The slide carries locking plates at each cock, and these carry cam shaped arms so
arranged that although it is possible to turn two of the cocks open at the same time,
it is not possible to close the one again so as to open the admission valve while the
other cock remains open and thus allow an unlimited quantity of liquid to be drawn
off through the tap without being registered, this being prevented by the said locking
plates which cause the cock which is open to hold the slide and consequently the valve
in the raised or closed position, so that the valve can only be opened when both cocks
are closed.
In the cylinder is a float, which, when the cylinder is full, presses upward a
contact at top of the cylinder, closing an electrical circuit in which is included an
electro magnet whose armature serves as a catch to a disc to which the before
mentioned slide is connected in such a manner that while the disc is held by the
armature, the slide is held in the lowered position in which it holds the inlet valve
open. When, on the cylinder being full, the float closes the electric circuit as
described, the electro magnet attracts the armature and thereby sets free the disc so
that the slide can now be forced upward by the spring closing the valve. As the
slide completes its upward motion, it acts upon a lever operating a cam or finger that
effects the separation the before mentioned contact so as to break the electrical circuit
and prevent waste of electrical current.
The before mentioned extensions of the cock plugs carry discs, on the periphery
of which are contact plates, the number of which correspond to the quantities of
liquid drawn off hy the respective cocks, so that as the cock is turned, these plates
make contacts with springs closing an electric circuit, and thereby send a correspond-
ing number of electric impulses to an electric counter, such as was referred to in
the first described arrangement, for indicating either the quantity or the money value
of the liquid withdrawn.
Or in place of the said dises with contacts, the extensions of the cock plugs may carry
arms acting directly or indirectly upon the piston rods of cylinders with contacts such
as were described in the first arrangement.
Dated this 15th day of Anest 1980
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Apparatus for Controlling and Registering Quantities or Beer,
Spirits, and other Liquids Discharged Through Engines or Cocks.
I, ROBERT JEWELL, of 9 Victoria Road, Battersea Park, Surrey, Gentleman, do
hereby declare the nature of this Invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:
My Invention has for its object to control the quantity of liquid, such as beer,
spirits &c. drawn off through engines or cocks, and to effect the registration either
of such quantities or of their monetary value.
For this purpose, when applying this invention to beer engines, I, according to
one arrangement connect the pull or lever of the engine by an arm to a slide that
carries a spring contact, which sliding up and down is caused to pass over a
series of fixed contacts situated one above the other, the number of such fixed
contacts being determined by the fractional parts of the total quantity of liquid drawn
off by one complete pull, which it is desired to register. The slide or its spring
contact is put in electrical communication with the one terminal of an electrical
circuit, and the fixed contacts are in communication with the other terminal, so that

page_text: each time a contact is made, an electrical impulse is passed through the circuit to
an electrical registering mechanism, which may be of any suitable arrangement, but
by preference of the construction described in my applications Nos. 1290389, 1874589,
whereby either the quantity of liquid or the money value thereof is registered.
According to another modification I employ in place of the above described
contact slide, a piston working in a cylinder, the piston rod having a head at its
outer end against the underside of which bears a fork or eye on the arm of the pull
or lever of the beer engine so that each time a quantity of liquid is drawn the piston
is raised, after which it descends by gravity, the speed of descent being controlled
by regulating an air discharge on the cylinder.
The rod is not fixed rigidly to the piston but is so arranged that when it raises
the piston, a head on its lower end is in contact with a part of the piston which is
of insulating material, while when the piston descends, the rod is in metallic contact
therewith. Within the cylinder are a number of insulated metallic contacts con-
nected to the one terminal of the electric circuit over which the piston passes in
ascending and descending, the other terminal of which circuit is in conducting
connection with the piston rod. Thus on the ascent of the piston, no closing of the
circuit is effected, as the piston rod is not in conducting connection with the piston,
but on the descent of the latter, the rod being in conducting connection therewith,
a closing of the circuit is effected each time the piston passes one of the fixed
contacts on the cylinder, such contacts representing any desired fraction of the
quantity of liquid drawn off by each complete pull of the engine lever.
In arranging the controlling apparatus in connection with cocks for drawing off
spirits and other liquids, I construct the same as follows:-
In connection with a nozzle by which the liquid is drawn off is a cylinder con-
structed to contain a definite maximum quantity of liquid that can be drawn off at
one time. This cylinder has a series of cocks communicating with it at different
levels, so that varying quantities of liquid can be drawn off from it, according to
which of the cocks is opened, and all these cocks communicate by branches with a
pipe connected to the drawing off nozzle, so that for drawing off a certain quantity
of liquid the corresponding cock on the cylinder is opened.
The cylinder is connected at its lower end by a pipe with the main tank, cask, or
vessel containing the liquid, and this communication is closed by a valve acted on
by a spring so that the valve has to be forced open against the spring in order to
fill the cylinder.
Connected to the valve is a vertically sliding plate which can be acted upon by
tappets on extensions of the plugs of the cocks, so arranged that on opening any
one of the cocks, the slide is not actuated and the valve remains closed, but on
closing the cock after the discharge has taken place, the tappet forces down the
slide and thus opens the valve so as to allow the cylinder to be filled again.
The slide carries locking plates at each cock, and these carry cam shaped arms so
arranged that although it is possible to turn two of the cocks open at the same
time, it is not possible to close the one again so as to open the admission valve while
the other cock remains open, and thus allow an unlimited quantity of liquid to be drawn
off through the taps without being registered this being prevented by the said locking
plate which causes the cock which is open to hold the slide and consequently the
valve in the raised or closed position, so that the valve can only be opened when both
cocks are closed.
In the cylinder is a float, which when the cylinder is full, presses upward a
contact on top of the cylinder, closing an electrical circuit in which is included an
electro magnet, whose armature serves as a catch to a disc to which the before
mentioned slide is connected in such a manner that while the disc is held by the
armature, the slide is held in the lowered position in which it holds the inlet valve
open. When, on the cylinder being full, the float closes the electric circuit as
described, the electro-magnet attracts the armature, and thereby sets free the disc
so that the slide can now be forced upward by the spring closing the valve. As
the slide completes its upward motion it acts upon a lever operating a cam or finger

page_text: Figures 1 and 2 of the accompanying drawings show an arrangement of apparatus
for carrying out my before described Invention for controlling and registering the
quantities of beer or other liquor drawn through pumps or engines. Figure 1 shews
a diagram view of the entire apparatus, and Figure 2 shows an enlarged vertical
section of the contact apparatus. A is the pump cylinder whose piston rod B is cou-
nected to the lever or pull C in any suitable manner. To the piston rod is attached
by preference in an adjustable manner, an arm D, terminating in a fork or eye D¹
that embraces loosely the rod E of the contact apparatus. This apparatus consists
of a cylinder F of insulating material closed at top and bottom in which is a piston G
connected to the rod E, which carries a weight H above the piston.
The piston consists of an upper part G¹ of insulating material and a lower part G²
of conducting metal fixed to G¹. The rod E which is also of conducting metal, passes
loosely through the part G into a cavity between the two parts, and is there provided
with a head E¹ which has a small amount of play between G¹ and G2 so that when the
rod E is moved upward by arm D it first moves slightly up, bringing its head out of
contact with G2 and in contact with G¹, and it then raises the piston up in the
cylinder on relieving the rod E of the pull of the arm D, the rod, being weighted
by H, will first move downward to a slight extent without moving the piston, until its
head comes in contact with the part G2, and the weight then causes the rod and piston
to slide down in the cylinder.
To the side of the lower part of the cylinder is fixed a metal piece I in which are a
number of sliding pins J J &c. projecting slight'y through the side of cylinder F and
held in that position by springs as shown. These pins and the piece 1 are put in
connection with the one lead of an electrical circuit K, including the electrical
registering mechanism L by which the quantities of liquid drawn are to be registered,
and which may be of any suitable construction by preference such as those described
in my applications Nos. 1290389 and 187458. The other lead of the circuit K is
connected to the rod E, which is insulated in any suitable manner from the arm D.
From this arrangement it will be seen that when the pull C is moved through a certain
distance for drawing a certain quantity of liquor, the arm D will raise piston Ga
corresponding distance in the cylinder F. The part G2 will thereby be brought
successively in conducting contact with a certain number of the pins J J2 &c. but as
the rod E is at that time not in conducting contact with the part G2, the electric
circuit K will not be closed and consequently no registration of such motion will be
effected on the counter L. When the required quantity has been drawn, and the pull
is moved back, so that the arm D moves down away from the collar on the rod E,
this will first make contact with G2 as described, and the two parts will then descend
in the cylinder, thereby completing the circuit and actuating the counter every time
the part G2 moves past one of the pins J2 J2 so that according to the greater or less
amount of liquor drawn, and the consequent greater or less height to which the piston
was raised, a greater or less number of contacts will be made and registrations of
units be effected.

page_text: Thus assuming that it be required to register the value of every quarter of a pint of
liquor, drawn, then the pull in drawing that quantity of liquor will only raise the
piston past the lowest contact pin J¹, and on the return motion only a single
registration will be effected; if three quarters are drawn, the piston will make three
contacts, and so on. To enable the piston to rise freely during the upward movement,
but to descend at any desired slower speed, so as to give sufficient time between the
successive contacts to effect the proper registrations on the counter, the bottom of
the cylinder F has a hole F¹ through which air can enter freely, but the escape of air
through which is more or less prevented by an internal spring valve F³, and it has a
second hole F³ into which is screwed a plug F that has one of its sides cut away at
an incline, so that according as the plug is screwed more or less in, it will leave a
greater or less hole for the escape of air, and will consequently retard the descent of
the piston to a corresponding extent.
The above described arrangement also has the advantage of permitting the so called
"after dash" to be given after a certain quantity of liquor has been drawn; namely
after the pull C has been moved back after drawing the liquid, the slower descent of
the rod E will have caused the arm D to have moved down sufficiently far from the
collar of the rod to allow of the pull being again drawn down sufficiently to give the
"after dash" without again raising the rod and piston thereby, and consequently
without actuating the counter by such movement, which is an essential requirement
of the trade.
For the cylinder and piston in the above described construction, may be substituted
a weighted sliding block constructed with insulating and conducting parts, operated
in the same way as the piston by the rod E, such block working on or between guides,
and sliding in contact with pins such as Ji J2 projecting through a fixed insulating
plate, the speed of descent of the block being regulated by springs thereon made to
bear with adjustable frictional contact against the guides.
In order to prevent any movement of the pull from effecting a registration on the
counter during the time that the suction pipe A' of the pump is separated from the
cask M for the purpose of changing the latter, I prefer to arrange the circuit wires K
in connection with the union of the cask in any known manner so that when the
union is detached from the cask, the circuit is broken.
In cases where it may happen, more particularly after connecting a fresh cask, that
the pull C has to be worked several strokes while only drawing air or froth 1 prevent
such movements from effecting any registrations on the counter by providing a contact
switch on the electric circuit, which ordinarily closes the circuit and is kept under
lock and key, but which at such times is moved so as to break the circuit, until the
pump delivers liquid, when it is again closed and locked up. I prefer however to
employ for this purpose the self-acting switches or contacts described in my
applications Nos. 1370889 and 1580489 whereby the fact of only air or froth being
pumped causes the switch to automatically break the circuit until liquid is drawn.
Figures 3 to 8 shew the construction of apparatus for carrying out my before
described Invention for controlling and registering quantities of liquid discharged
through taps. Figure 3 shews a front view of the apparatus, Figure 4 a back view,
Figure 5 a cross-section, Figure 6 a part view of plate D, Figure 7 a detached view
of contact disc S2 and Figure 8 a front view of two sets of the apparatus contained in
a casing.
A is a cylinder of definite capacity equal to the maximum quantity of liquid
which is required to be drawn off at one time. In this cylinder are a number of
taps B1 B2 B3 &c. passing through it at different levels, each tap being thus enabled
to draw off a different quantity of liquid, that is to say, assuming the cylinder to be
full and the top tap B₁ to be opened, this will discharge, say two pennyworth of
liquor, then if tbis tap be closed, and after filling A again, B2 be opened, this will
discharge three pennyworth, and so on, while if the bottom tap B be opened, the
whole contents of the cylinder will be discharged. These taps have an opening at b
for the entrance of the liquor, and another opening which, when the tap is turned
half round from the closed into the open position, is brought opposite the opening of

page_text: a branch c¹ c &c. on a pipe C the lower end of which is connected to a discharge
nozzle . The relative positions of the openings 6 and bare by preference so
arranged, that when b' is in the open or discharging position, b is at the uppermost
part of the tap, so that the liquid will be discharged exactly to that level.
The lower end of the cylinder A communicates by a branch pipe A' with the
pipe leading to the main cask or tank situated at a higher level, from which the
liquid is to be drawn, and on the branch A¹ is a chamber A² containing a shut off
valve A3 which is kept closed by a spring, so as to close the communication
between the cask and the cylinder when the latter full, and when liquid is being
drawn off, the valve being forced open against the spring as will be presently
described, when it is required to fill the cylinder again, after withdrawing a certain
quantity therefrom.
Bearing upon the end of the valve spindle a is a vertically sliding plate D,
working between guides D¹ fixed to the cylinder; this plate has openings through
which pass the projecting ends of the tap plugs B B2, on these plugs are
fingers E E E³ &c. which, in turning the tap from the closed to the open position,
pass the noses of spring catches F1 F2 pivotted on plate D without actuating the
latter, but when the tap is turned in the opposite direction, for closing after the
quantity of liquid has been withdrawn, the finger E¹ presses upon the top of the
catch F, and in thereby forcing plate D downward, causes this to open the admission
valve A³, and allow the cylinder to be filled with liquid again. The plate has
an arm D¹ near its lower end, a pin on which takes into a notch in a disc G, so
that when the plate is forced downward as described it turns the disc somewhat
so as to bring a beak G¹ thereon behind a stop I' on the armature lever I of an
electro magnet J, the armature being held by a spring K, so that it will retain the
disc G in the position shewn, and thus prevent the plate D from rising and the
valve A³ from closing. Within the cylinder A is a float L which is carried by a
support near the upper end of the cylinder, and which in rising, when the cylinder A
has become filled, presses against a plate M, the stem of which passes through a guide
on the top of the cylinder and carries an insulating head M¹ on which rests a contact
piece N to which is connected the one lead of an electrical circuit 0 in which is
included the electromagnet J. The float in pressing the plate M upwards con-
sequently causes N to make contact with a piece N¹ which is pivotted to a screw P to
which the other lead of the circuit O is connected. The circuit being thus closed,
the electromagnet is made to attract its armature I and this is thereby made to
release the beak of disc G, and the plate D being now free to rise, it is pushed up by
the spring of the valve A³ so that this now closes, and cuts off the further supply.
In order to break the circuit of the electromagnet again as soon as this action is
completed, the plate D carries an arm & at its upper end, which on the rising of the
plate presses upward against a tail N2 on the piece N¹ and in thus forcing the latter
away from N breaks the circuit.
It is essential with the above described arrangement, firstly that it should not be
possible to open one of the taps while the supply valve A³ is open, and secondly, that
it should not be possible, after opening two taps at the same time, to close one tap and
thereby effect the opening of the valve A³ in the manner described, while the other
tap remains open, as in either of these cases an unlimited quantity of liquid might be
drawn without being measured and registered. This is prevented by the following
arrangement: On the inner face of the plate D are fixed a number of locking
pieces QQ&c. with are shaped faces as shewn at Figure 6, and on the tap
plugs B B &c. are fixed are shaped cams R R2 &c. When the plate D is in
the raised position and the taps are closed, the cams are in the position shewn at R
in Figure 6, and in turning the tap into the open position the cam can just pass with
its curved surface beneath the curved surface of the locking piece, as shewn at R2,
but when the plate D is down and the supply valve is open, the locking piece being
in the dotted position shewn at Q3, the cam R³ will, in attempting to turn open the
tap, butt against the edge of Q³, and consequently its motion will be arrested before
it can be brought into the open position. Again, assuming the plate D to be in

page_text: the raised position and that two of the taps have been turned into the open
position, then in turning one of these into the closed position the depression of the
plate D cannot be effected by the pressure of the finger E of the tap on the catch F,
as above described, because the cam R of the other open tap, being situated under the
curved face of its locking piece Q prevents any downward motion of D.
Both taps must therefore be turned so as to close the discharge openings and bring
the cams from under the locking plates before the depression of plate D and opening
of the supply valve can be effected.
For effecting the registrations on the counter, according to the quantity of liquor
drawn at one time, each tap plug B1 B2 carries on its rear end a disc S1 S2 of
insulating material on the periphery of which are contacts ss which are in conducting
connection with the plugs B1 B2 and through these with the cylinder A, to which at
any convenient point the one lead of the electric circuit T of the registering counter
is connected, while the other lead is connected to a plate U secured in an insulated
manner to the cylinder A, and carrying a number of contact springs u¹ u u³ which
slide in contact with the discs S1 S2 and consequently effect a closing of the circuit so
as to actuate the counter every time one of the contacts passes underneath the spring,
on the turning of the tap. The contact pieces s s may be arranged in either of two
ways; either there are half as many contact pieces as there are registrations to be
effected on the counter, so that one half of the registrations are effected on turning
the tap open, and the other half on turning it into the closed position; thus in the
above described arrangement, the disc S¹ of tap B₁ would have only one contact piece,
as on turning open the tap, this would register one penny, and on turning the tap
back it would register the second penny. Or the contacts may be arranged to register
only in one direction in which case there would be as many contacts as there are
units to register, with this arrangement the disc is made loose on the sleeve by which
it is connected to the plug, and the sleeve s2, which is of conducting metal and is
fixed to the plug, is formed with a stud s³, which fits with a small amount of play in
a notch in the disc S, as shewn at Figure 7, and the one side of this notch is formed
of insulating material, while the other side is of conducting metal in connection with
the contacts s s. Thus on turning the plug into the open position, the stud s presses
against the conducting piece of the dise S and consequently the contacts s in passing
under the spring u effect the closing of the circuit as described, while on turning the
plug in the contrary airection for closing, the stud 3 will press against the insulating
material of the disc, and consequently the contacts will not effect the closing of the
circuit. This arrangement requires to be used in those cases where the number of
contacts to be made is uneven, as for example with the "3d" tap.
Although the above described construction of measuring and registering apparatus
is specially designed for cases where it is desired to draw variable quantities of liquid,
yet it will be evident that it may be equally well applied for always drawing one and
the same quantity of liquid by means of a single tap, such, for instance, as for bottling
purposes.
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. In apparatus for controlling and registering quantities of beer, spirits and other
liquids discharged through engines the combination with the lever or pull of the
engine or pump of a piston or slide moving past a series of electrical contacts
connected through an electrical circuit with a registering mechanism or counter, the
piston or slide and contacts being so arranged that on the engine pull or lever being
moved in one direction, it raises the piston or slide past the contacts without thereby
closing the electrical circuit, while when the lever is moved back again, it leaves the
piston or slide free to descend by gravity, at which time it is caused to close the
electric circuit momentarily on passing over the contacts and thereby to effect one or
more registrations on the counter, substantially as herein described.
2. In controlling and registering apparatus such as is referred to in the preceding

page_text: claim constructing the slide as a piston within a cylinder on the inner surface of
which is the said series of contacts the piston being formed partly of insulating
material and partly of conducting material and so connected to its rod which is acted
upon by the engine lever, and which is connected to the one terminal of the circuit,
that when the piston is moved upward the rod is not in conducting connection with
the piston, and no closing of the circuit is consequently effected, while on the descent
of the piston its rod is in conducting connection therewith, so that on passing a
contact, the piston closes the circuit substantially as herein described with reference to
Figures 1 and 2 of the drawings.
3. In controlling and registering apparatus such as is referred to in the preceding
claims, the combination of the cylinder F of insulating material, piston G partly of
insulating material and partly of conducting metal, weighted piston rod E connected
to the one lead of the electrical registering circuit, and having a head El working
loose in the piston, contact pins J¹ J2 connected to the other circuit lead, hole F³ with
screw plug F for regulating the escape of air from the cylinder, and arm D,
connected to the pump rod for effecting the upward motion of the piston in the
cylinder, substantially as and for the purposes described with reference to Figures 1
and 2 of the drawings.
4. In apparatus for controlling and registering quantities of liquid discharged
through taps, a vessel of determined capacity having two or more cocks or taps at
different levels so that according to which tap is opened, a corresponding definite
quantity of liquid is discharged from the vessel, in combination with means whereby
the supply of liquid to the vessel is cut off while liquid is being withdrawn through a
tap, while by the closing of the tap the valve for the supply of liquid to the vessel is
automatically opened in order to fill the vessel again, the quantity withdrawn each
time a tap is opened, or the money value thereof being registered on an electrical
counter mechanism by causing the opening or the closing movements of the said taps,
or both, to make and break a contact on the electrical circuit of the counter
mechanism a number of times corresponding to the quantity of liquid drawn
substantially as herein described.
5. In apparatus. such as is referred to in the preceding claim, the provision of
means whereby the opening of a discharge cock is automatically prevented while the
supply valve is open, substantially as described.
6. In apparatus such as is referred to in the first claim, the provision of means
whereby the opening of the supply valve by the closing of a cock on the vessel is
prevented, while a second cock on the vessel remains open, substantially as described.
7. In apparatus for controlling and registering quantities of liquid discharged
through cocks or taps, the combination of a vessel A, having one or more cocks or
taps B¹, with a contact device for opening and closing an electrical circuit actuating a
counter mechanism each time the cock is opened, a supply valve A³ closed by a spring
and opened by a sliding plate D actuated by a finger E on the cock, when this is
being closed, a catch device such as GI connected to the sliding plate D for retaining
this in the lowered position and controlled by an electromagnet J, a float L, in vessel A
so arranged as to close a contact on the electrical circuit of the electromagnet when
the vessel A is full, and in thereby releasing the catch device, cause the supply valve
to be closed, substantially as described with reference to Figures 3 to 8 of the
drawings.
8. In apparatus such as is referred to in the preceding claim, the combination of
the valve-controlling plate D having locking pieces Q with cams R, on the cock
plugs B operating substantially as and for the purposes set forth.
Dated this 12th day of May 1890.
ABEL & IMRAY,
Agents for the Applicant.