Improvements in Meters for Measuring Fluids.
Year: 1889

page_text: Date of Application, 18th Mar., 1889
Complete Specification Left, 18th Dec., 1889-Accepted, 18th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Meters for Measuring Fluids.
I, ARNOLD GOODWIN, Junior, of 56 Sumner Street, Southwark, in the County of
Surrey, Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in that class of piston meters in which the
piston of each measuring cylinder controls the action of a slide valve, plug cock, or
other form of distributing apparatus governing the motion of the piston in another
cylinder, and in which the cylinders and other parts are surrounded by a casing
enclosing a space forming a chamber into which the fluid to be measured freely Hows,
the arrangement being such that the pressure on the exteriors of the cylinders shall
equal or exceed the internal pressure thereby admitting of the use of cylinders of light
construction and by removing one part of the casing the whole of the working parts
of the meter can be inspected or be removed for repair without disconnecting the supply
and delivery connections. The object of this invention is to simplify the construction
and thereby cheapen the cost of such meters.
in'
According to this invention, the cylinders arranged with their axes parallel, are
mounted upon a base plate that forms the bottom of a removable casing that encloses
them. The base plate is formed with sets of ports and valve faces on which work two
valves that serve to control the admission and exhaustion of the fluid to be measured
to and from the cylinders. The chambers or passages in communication with the
supply and discharge pipes and also the passages for placing the respective ends of the
cylinders by way of the ports, in communication with the interior of the casing at
the proper times, are cast or otherwise formed in a plate that may be secured in any
convenient manner to the underside of the base plate. The chambers or passages
the plate are made in the form of open channels or recesses so as to permit of their
being readily cast without the use of cores, thereby considerably reducing the cost
and labor required in forming the passage ways required in meters of the kind
referred to, and which as ordinarily constructed are crossed within the casting forming
part of the cylinders or casing and require the use of complicated cores for their
formation. Valves operated and controlled in the usual manner by the pistons, are
arranged to work upon the valves faces and a connection from one of the valves, or
from one of the piston rods serves to actuate a ratchet wheel or other device for
operating the counting mechanism. The admission of the fluid to the casing may be
controlled by a lift valve, and a screen may be used to prevent the entrance of floating
matter to the interior of the casing.
Doted this 18th dow of Morab 1889
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Meters for Measuring Fluids.
I, ARNOLD GOODWIN, Junior, of 56 Sumner Street, Southwark, in the County of
Surrey, Engineer, 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 relates to improvements in that class of piston meters in which the
piston of each measuring cylinder controls the action of a slide valve, plug cock, or
other form of distributing apparatus governing the motion of the piston in another

page_text: cylinder, and in which the cylinders and other parts are surrounded by a casing
enclosing a space forming a chamber into which the fluid to be measured freely flows,
the arrangement being such that the pressure on the exteriors of the cylinders shall
equal or exceed the internal pressure thereby admitting of the use of cylinders of
light construction and by removing one part of the casing the whole of the working
parts of the meter can be inspected or be removed for repair without disconnecting the
supply and delivery connections. The object of this invention is to simplify the
construction and thereby reduce the cost of such meters.
According to this invention the cylinders arranged with their axes parallel, are
mounted upon a bed plate, that, may form the bottom of a casing the remainder of
which is removable. This bed plate is formed with sets of ports and provided with
valve faces on which work two valves that serve to control the admission and
exhaustion of the fluid to be measured to and from the cylinders. The inlet and outlet
chambers or passages, (hereinafter called passages) intended to communicate with the
supply and discharge pipes, also the passages for placing the respective ends of
the cylinders in communication by way of the various ports with the interior of the
casing at the proper times, are cast or otherwise formed in a plate (hereinafter called
the base plate) that can be secured in any convenient manner to the underside of the
bed plate or to the removable part of the casing. The passages in the base plate are
made in the form of open channels or recesses so as to permit of their being readily
cast without the use of cores, thereby considerably reducing the cost and labour
required in forming the passage ways required in meters of the kind referred to and
which as ordinarily constructed are crossed within the casting forming part of the
cylinders or casing and require the use of complicated cores for their formation.
Valves operated and controlled in the usual manner by the pistons, are arranged to
work upon the valve faces and a connection from one of the valves, or from one of the
piston rods, serves to actuate a ratchet wheel or other device for operating the counting
mechanism. The admission of the fluid to the casing may be controlled by a non
return lift valve and a screen may be used to prevent the entrance of foreign matter
to the interior of the casing.
Referring to the accompanying sheets of illustrative drawings,
Fig. 1 is a longitudinal vertical section of a meter according to this invention in the
plane of the axis of the cylinder 1.
Fig. 2 is a transverse section on the line - Fig. 1, the cylinder ends and other
parts being shewn in elevation.
Fig. 3 is a plan of the bed plate with the parts it carries.
Fig. 4 is a plan of the base plate shewing the passage ways therein, the position of
the bed plate and the ports therein being indicated in dotted lines.
1, 2, are two measuring cylinders, each with a piston 3, and rod 4 carrying a cross
head 5 that acts as a tappet. 6, 6, are two slide valves one arranged to be actuated
from cach piston rod 4. Each valve is provided with projections 7, 7 against which
the cross head 5 of the corresponding rod 4 alternately acts, so as to move the valve
as hereinafter described during the latter part of its outward and inward strokes
respectively. The valves each work on a valve face 8 which is attached, as are the
cylinders to the bed plate 9. 10 is the base plate, which according to this invention
is formed with passages 11, 12, 13, 13, 14 and 14". These passages can as hercin-
before mentioned, be readily formed by casting the plate in a suitable mould without
the use of cores. The passages 11 and 12 serve as inlet and outlet passages and are
when the meter is in use, in communication with water inlet and outlet pipes-15
and 16 respectively. The passages 13, 13, 14 and 14 serve with other passages and
ports hereinafter mentioned for placing the respective ends of the cylinders in
communication with the interior of casing 17 as hereinafter described. This casing is
in the example shewn arranged to be secured to the base plate 10 by suitable
connections such as bolts so that it can be easily removed for gaining access to the
cylinders, valves, and attached parts, without the necessity of disconnecting the
inlet and outlet pipes 15 and 16 which are secured to the base plate 10. Ports 18, 19

page_text: 20 '
and 20 in the one valve face o communicate by the passages
extending through the bed plate 9 with the passages 13, 14 and 12 respectively in
the base plate 10. The corresponding ports inarked 18, 19, 20, in the other valve
face communicate in a similar manner with the passages 13ª, 14" and 12 respectively
(Fig. 4). The cylinder 1 at its front and rear ends communicates by passages 21
and 22 (Fig. 1) that extend through the bed plate 9, with the passages 14" and 13*
respectively in the base plate 10, other passages 21 and 22 similar to 21 and 22
and indicated in dotted lines in Fig. 4 serving to place the ends of cylinder 2 in
communication with the passages 14 and 13 respectively. The positions of the several
passages extending through the bed plate, relatively to the passages in the base plate
are indicated in dotted lines in Fig. 4. 23 are passages that extend through the
bed plate and serve to place the interior of the casing in communication with the inlet
passage 11.
24 is a lift valve in the form of a plate for controlling the passages 23;
this valve is guided vertically by screws 25. 26 is a vertical sheet of gauze to prevent
entry of foreign bodies into the casing 17. 27 is a vertical rock-shaft. for actuating
counting mechanism that may be of any suitable construction and placed within the
receptacle 17. The rockshaft carries at its lower end a slotted arm 28 into which
takes a pin 29 on one of the cross heads 5 whereby the counting mechanism is operated
at each reciprocation of the piston in the cylinder 1.
The operation of the meter is as follows:-
Assuming the slide valves 6, 6" and pistons 3, to be each at the inward end of its
stroke, then water to be measured flowing into the casing 17 through the passages 11
and 23, will flow through the port 18 that is uncovered by the slide valve 6 and
through the passages 18*, 13 and 22ª to the rear end of the cylinder 2 and will cause
the piston therein to make its outstroke, the water at the front side of this piston
then escaping through the passages 21ª, 14, 19*, port 19, cavity 6* in valve 6, port 20,
and passage 20* to the outlet passage 12. At the same time the front end of
cylinder 1 will be in free communication with the interior of the casing 17, through
the passages 21, 14° and passage and port 18 of the other valve face upon which the
slide valve 6° works. When the piston of cylinder 2 nears the end of its outstroke,
its tappet 5 acting on the forward stop 7* of valve 6" will move this valve so as to
cover port 18 and place it in communication through the cavity in the valve with
port 20 and will uncover port 19ª. The water in the casing will then pass through
this port 19, passages 13 and 22 to the rear end of cylinder 1 and will cause the
piston therein to make its ontward stroke the water at the front of this piston escaping
through passages 21, 14ª, passage and port 18, cavity in valve 6, port and passage 20,
to the outlet passage 12 and thence to the outlet pipe 16. As the piston in
cylinder 1 nears the end of its outstroke its tappet 5 will come into contact with the
stop 7 on valve 6 and as the piston completes its stroke will move this valve so as to
cover port 18 and uncover port 19. Water will then pass through this port 19 and pas-
sages 19*, 14 and 21 to the front end of cylinder 2 and will cause the piston therein
to make its inward or return stroke just before the completion of which its rod will return
valve 6" to its original position and again uncover port 18" and cover port 19". The
water at the rear side of the piston in cylinder 2 will escape through the
passages 22ª, 13 and 18*, port 18, cavity 6* in valve 6, port 20 and passage 20* to
the outlet passage 12. When the port 18" is uncovered, water will flow through it
and the passages 14 and 21 to the front end of cylinder 1 and will cause the piston
in the cylinder to make its return or inward stroke during which time, the water at
its rear side will escape through passages 22 and 13, passage and port 19, cavity in
valve 6, port and passage 20s to the outlet passage 12. The piston in cylinder i
just before it completes its stroke will move the valve 6 so as to uncover port 18 and
cover port 19. The slide valves and pistons will then be again in their original
positions and the above described operations will again take place. As will be obvious,
during the working of the meter the interior of the casing 17 will be filled with
water and each cylinder will consequently be subjected to external and internal
pressures which will counterbalance each other, and thus admit of the walls of the
cylinders being made thin.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I'
claim is
1. The construction of a fluid meter of the kind above referred to with a plate such
as 10 adapted to be removeably attached to the meter casing and made with channels
or recesses to form with the juxtaposed part of the meter the necessary inlet or supply
and outlet or discharge passages as also the passages for placing the respective ends of.
the measuring cylinders or chambers in communication as required through suitable::
ports with the said inlet or supply and outlet or discharge passages as set forth.
2. My herein described improved fluid meter.
Dated this 17th day of December 1880
.31
ARNOLD. GOODWIN, JR.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.