Improvements in Apparatus suitable for use as a Water Meter.
Year: 1889

page_text: Date of Application, 13th Feb., 1889
Complete Specification Left, 12th Nov., 1889-Accepted, 21st Dec., 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus suitable for use as a Water Meter.
I, WALTER GEORGE KENT of 199, 200 & 201 High Holborn, in the County-of
Middlesex, Manufacturer, do hereby declare the nature of this invention to be as
follows:
I employ an elliptical piston having a rotary and also an end wise movement within
a cylindrical casing. The elliptical piston bears not only against the cylindrical casing
but also against an abutment dividing the inlet and outlet passages. My invention
chiefly relates to this abutment, it is hinged to a standard fixed to the casing so that
it is free to move towards or away from the piston so as to insure smooth working
and to compensate for any wear that may take place. In order to limit the motion I
provide a screw bearing against the hinged abutment near its end remote from the
hinge. This abutment is actuated either by the water pressure alone or by it in
combination with a spring.
The water pressure causes the abutment to make a constant joint against the
piston even where the action of the piston is such as to pull it away from the
abutment to the extent of the play that necessarily exists in fitting.
Any wear can be taken up by regulating the screw bearing against the abutment.
In order to further support the piston I provide a guide plate made in one piece
with the standard, to which the abutment is hinged.
I make the elliptical piston of vulcanite, and in order to obtain the necessary
strength and rigidity I embed wire in the vulcanito in the process of moulding.
form the casing in a somewhat similar manner to that described in my
Specification No. 3257 of 1886 so that the working parts can readily be lifted in
and out.
2000
CARPMAEL & Co.,
A cents
COMPLETE SPECIFICATION.
Improvements in Apparatus suitable for use as a Water Meter.
I, WALTER GEORGE KENT of 199, 200 & 201 High Holborn in the County of
Middlesex Manufacturer 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:—
I employ an elliptical piston having a rotary and also an end wise movement within
a cylindrical casing. The elliptical piston. bears not only against the cylindrical
casing but also against an abutment dividing the inlet and outlet passages. My
invention chiefly relates to this abutment, it is hinged to a standard fixed to the
casing so that it is free to move towards or away from the piston so as to insure
In order
smooth working and to compensate for any wear that may take placo.
to limit the motion I provide a screw bearing against the hinged abutinent near
its end remote from the hinge. This abutment is actuated either by the water
pressure alone or by it in combination with a spring.
The water pressure causes the abutment to make a constant joint against the piston
even where the action of the piston is such as to pull it away from the abutment to
the extent of the play that necessarily exists in fitting.
Any wear can be taken up by regulating the screw bearing against the abutment.
In order to further support the piston provide a guide plate made in one piece
with the standard, to which the abutment is hinged.

page_text: I make the elliptical piston of vulcanite and in order to obtain the necessary
strength and rigidity I embed.wire in the vulcanite in the process of moulding.
1 form the casing in
Specification No. 3257 of 1886 so that the working parts can readily be lifted in
and out.
somewhat similar manner to that described in my
In order that my said Invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
(
:
Specification No. 3257 of 1886 so that the working parts can readily be lifted in
and out.
In order that my said Invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is an elevation of a water meter constructed in accordance with my
Invention.
Figure 2 is a longitudinal section of the same.
Figure 3 is a plan of the meter with the cover and top plate of the measuring
-chamber removed.
Figure 4 is a plan of the cover.
Figure 5 is a plan of the top plate of the measuring chamber.
Figure 6 is a section of the measuring chamber on the line A B in Figure 3.
Figure 7 is a plan of the piece on which the guide ribs are formed, and
"Figure 8 is a prospective view of the same.
Referring in the first place to Figures 1 to 6 a is the under part of the casing, it
is cast in one piece with the inlet passage a¹ and the outlet passage a². bis the
cover and b¹ the cavity which communicates with the outlet passage a². c is the
chamber of the measuring apparatus and d is the top plate closing the measuring
chamber at its upper end. c is the inlet aperture through the lower end of the
measuring chamber and is the outlet aperture through the top plate d. is a
hooded or covered aperture oppposite to the outlet aperture d' it is always in com-
munication with the outlet. is a hooded aperture in the plate corresponding
to the inlet aperture c¹ and this is always connected with the inlet. e is the elliptical
piston or partition it is made of vulcanite and el el are rings or strips of wire or
metal embedded in the vulcanite in process of manufacture; wire made of steel, iron or
platinum or other rigid metal is suitable. ² is a peg projecting upwards from the
oval piston to actuate the counter. The counter is not represented in the drawing.
f is a boss within the piston and on which it works. g is a stud on which the boss is
mounted and is free to turn. h is a projection it forms part of a casing of brass or
other metal shown separately at Figures 7 and 8 the casting is fixed within the
measuring chamber. The projection extends from the bottom of the chamber up
into contact with the top plate so that water cannot pass it.from the inlet to the outlet
..side. The casting is however ribbed or formed so as to allow water to pass it upwards
from the inlet aperture c¹ into the hooded aperture d² and also in like manner to
establish communication between the outlet and the hooded aperture 2. i is the
abutment flap it is jointed to the projection and it also extends the full length of the
measuring chamber from bottom to top. The pressure of the water on the inlet side
holds the flap in watertight contact with the piston. The joint is so formed as to allow
to the flap a small amount of play. is an adjusting screw which controls the
movement of the flap. are guide ribs serving to guide the end of the piston when
at one end it passes out of contact with the wall of the measuring chamber. The
guide ribs are formed in the same casting with the projection and they serve to
conduct the piston past the abutment flap. k is a conical strainer of finely perforated
metal which is fitted on to the underside of the measuring chamber.
The casting shown by figures 7 and 8 is inserted as will be seen into the position
prepared for it within the chamber c.
are little screws at the back of the
casting which abutt upon the wall of the chamber c and by means of these the casting
can be set forward towards the piston.
The action of the apparatus is as follows:-
The parts being in the position in which they are shown in Figure 3 water enters
the measuring chamber at e¹ and passes into the cavity in the piston to the left of

page_text: the boss f. The water cannot pass the boss but by its pressure it holds the left end of
the piston close against the wall of the chamber c. The water also enters from the
port c¹ beneath the left end of the piston and the pressure which the water there exerts
causes the piston to rotate in the direction of the hands of a watch. Whilst water
thus enters beneath the piston on the left (as seen in Figure 3) water escapes from
above the piston; for as will be seen the first movement of the piston places the space
above it in communication with the port. 2 and also with the similar port d'imme-
diately over it. In the rotation of the piston the cavity within it, which in Figure 3
appears on the right of the boss f after a time passes to the left of it and in turn
receives water from the port c¹ and then the action as above described is repeated.
The abutment flap i effectually prevents water from passing from left to right
beneath the piston.
1 would remark as respects the hooded ports c² and d² and also as respects the
adjusting screws * that they form no part of my present Invention but are
additions or improvements to which my Patent application No. 12036 in the present
year relates.
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
1 claim is
1. A water meter having a measuring chamber, and an elliptical piston revolving
therein and an abutment flap i movable about a joint and serving to separate the inlet
from the outlet side of the meter substantially as described.
2. A water meter having a measuring chamber and an elliptical piston revolving
therein and a movable abutment controlled by an adjustable stop substantially as
described.
3. A water meter having a measuring chamber and an elliptical piston revolving
therein; such piston being of vulcanite strengthened by metal embedded therein
substantially as described.
4. A water meter having a measuring chamber and an elliptical piston revolving
therein also piston guides and an abutment carrier h formed in one piece and
separate from the measuring chamber substantially as described.
Dated this 11th day of November 1889.
WALTER GEORGE KENT.