Improvements in Water Meters.
Year: 1889

page_text: Date of Application, 29th July, 1889
Complete Specification Left, 29th Apr., 1890-Accepted, 7th June, 1890
PROVISIONAL SPECIFICATION.
Improvements in Water Meters.
I, WALTER GEORGE KENT, of 199, 200 and 201 High Holborn, in the County of
Middlesex, Manufacturer, do hereby declare the nature of this invention to be as
follows --
This invention has for its object improvements in water meters.
I construct a water meter with an outer casing made in two parts; one part of the
casing is adapted to be connected with the supply pipe on the one side and with the
delivery pipe on the other side. The other part of the casing is a cover which is
fixed upon the first part by bolts or otherwise; it has in it a cavity in communication
with the delivery pipe.
The measuring part of the meter forms a partition between the supply and the
delivery cavities of the casing and it is held in place by flanges shut in a recess in the
joint between the two parts of the casing.
The measuring part of the meter consists of a chamber of cylindrical form as to
about two-thirds of its circumference with an enlargement as to the remaining portion;
it is closed at the ends and the water to be measured enters it from the casing by
an aperture in one of its ends and passes out into the delivery cavity in the cover by
an aperture in the other end.
The measuring chamber contains a cylindrical boss which is able to rotate about a
stud eccentrically.placed within the chamber.
The boss is contained in a cavity in an oval piston or partition which both rotates
with or about and slides longitudinally upon the boss, one or other of its ends
meanwhile being always in contact with the walls of the measuring chamber.
This piston, with the aid of an abutment or flap which is connected by a hinged or
flexible joint with a projection from the wall of the chamber serves at all times to
separate the inlet from the outlet apertures of the measuring chamber but the water is
able to pass in consequence of the revolution of the piston within the chamber.
Arrangements are made to regulate the amount of play allowed to the abutment and
to compensate for wear and sometimes a roller abutment is employed.
The cavity in the piston is divided into two parts by the boss within it and one
part overlaps the inlet aparture and the other the outlet consequently the water
pressure within the piston tends to keep its leading end in contact with the wall of
the measuring chamber.
In order that the water pressure may not force the piston against the upper end of
the measuring chamber double passages are formed that is to say there is an inlet
passage at the exit end of the measuring chamber and an outlet passage at the inlet end
but these extra passages are covered with hoods, they serve only to equalise the action
of the water upon the two faces of the piston. Upon the upper face of the piston
there is a peg and this as the piston rotates drives counting mechanism mounted upon
the cover:,
On either side of the abutment ribs are provided to guide the end of the piston as it
approaches and leaves the abutment; these guide ribs are formed in one piece and
this piece serves also to carry the abutment. In some cases the piece is arranged so
that it can be adjusted to compensate wear. The spaces behind the guide ribs place
the hooded ports previously mentioned in communication the one with the inlet and
the other with the outlet side of the casing.
In meters of large size I dispense with the outer casing and connect the inlet
and outlet passages on the under side of the measuring chamber directly with the
main inlet and outlet channels: Also to provide freer ingress and egress for the
water when the end of the piston is near to the abutment I provide additional

page_text: passages at the side of the measuring chamber; one iealing the water into the
casing behind the guide ribs and the other leading it away from the corresponding
part of the casing on the other side of the abutinent.
I make the piston of vulcanite and to impart the requisite strength and rigidity I
sometimes cause wire or metal rings or strips to be embedded in the vulcanite. in the
process of manufacture.
Dated thin amıh J
1000
COMPLETE SPECIFICATION..
Improvements in Water Meters.
I, WALTER GEORGE KENT of 199, 200 and 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 :-
This Invention has for its object improvements in water meters and relates to
meters such as are described in the Specification of my formner Patent No. 2572
in the year 1889.
I dispense with the outer casing and connect the inlet and outlet passages on
the under side of the measuring chamber directly with the main inlet and outlet
channels. Also in order to give freer ingress and egress for the water when the
end of the piston is near to the abutment I provide additional passages at the side
of the measuring chamber; one leading the water into the casing behind the guide
ribs and the other leading it away from the corresponding parts of the casing on the
other side of the abutment.
I also provide ports at each end of the measuring chamber to equalise the action
of the water on the piston. Also I make the piston guides adjustable.
Figure 1 is a longitudinal and vertical section of a meter constructed in accordance ;
with my Invention.
Figure 2 is a plan with the cover removed.
Figure 3 is a section on the line 3-3 in Figure 2.
Figure 4 is a section on the line 4-4 in Figure 2..
Figure 5 is a side elevation.
Figure 6 is an underside view of the cover.
Figure 7 is a perspective view of the guide ribs and parts in connection therewith.
Figure 8 is a rear elevation of the same part drawn to a large scale and a part of
the bottom of the measuring chamber is shewn in section.
Figure 9 is a section on the line 9-9 in Figure 8.
Figure 10 is a section on the line 10-10 in Figure 8.
a is the lower part of the casing and is the cover, they enclose between them
the measuring chamber c. a is the main inlet channel and a' is the main outlet.
cx is the passage into the measuring chamber and c** is the passage from it to the.
main outlet. * and d** are corresponding ports in the cover. e is the piston.
e are rings of steel or other rigid wire embedded in the vulcanite piston. e² is a
peg upon the piston which drives the counting train. The counting train is not
shown. is the boss on which the piston works. g is the stud which holds the boss
in place. is the support for the abutment. ¹hare the piston guides and i is the
abutment flap. In order that the piece on which the guide ribs h¹³ are formed may
be capable of adjustment I provide screws at its back which bear against the case and
regulate its position. In this meter the chamber c is lined with sheet brass and the-
piston has a cross bar ex of the same material, and in addition is strengthened by
wire embedded in the vulcanite.
This meter has passages and m the one communicating with the main inlet a¹
and the other with the main outlet a². These passages serve two purposes, first
they connect the hoods or spaces over the ports dx, and dxx with the inlet and
the outlet respectively and so place these ports in the same conditions as the

page_text: corresponding ports cx and c** beneath in such manner that the pressures on the
top and bottom faces of the piston are balanced, and second they adinit of additional
ports being formed at land m³ in the side walls of the measuring chamber, which
afford freer passage to the water into and from the measuring chamber; which in
some. positions of the piston is needed. In place of jointing the abutment flap i to
the abutment carrier hit may have a flexible connection or an abutment pressed
inwards radially by a spring may be employed.
It is obvious that these meters may when required be used for measuring other
liquids as well as water.
Sometimes I provide for the adjustment of the guide ribs; this I do by providing
set screws at the back of the piece on which the ribs are formed. The arrangement
is shown by Figure 11 in which figure the set screws by which the adjustment
is made are marked * *.
Sometimes I employ a roller abutment; the roller in this case is held in a recess
at the end of the abutment flap, in which it is free to turn the flap at its other
end is cylindrical and is fitted into a corresponding cavity. A pin or stop behind
the flap limits its movement and a spring may be provided to press the flap up to
the piston. Figure 12 is a plan and figure 13 is a perspective view showing the
arrangement. In these figures i* is the roller.
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 :-
:-
1. A meter substantially as described in which the main inlet and outlet channels
extend beneath the measuring chamber which is formed upon and between them,
and has ports at the bottom opening directly into such main channels and has a
cover with ports opening into the measuring chamber and hoods or cavities over
the ports connected with the main inlet and outlet channels beneath the measuring
chamber by lateral passages as herein set forth.
2. A water meter substantially as described with passages and m at the sides
of the measuring chamber and with ports and m through the walls on either
side of the abutment, giving freer passage to the water into and from the meter.
3. A water meter substantially as described with piston guide ribs / adjustable
in the measuring chamber.
4. A water meter substantially as described with a roller abutment as explained
with respect to Figures 12 and 13.
Dated this 29th day of April 1890.