Improvements in Apparatus for Measuring the Flow and Quantity of Liquids.
Year: 1895

page_text: Date of Application, 8th July, 1895-Accepted, 17th Aug.,
1895
COMPLETE. SPECIFICATION.
Improvements in Apparatus for Measuring the Flow and Quantity
of Liquids.
I JAMES GEORGE GALLEY of 181' Neville Road, Upton Park, in the County
of Essex, Engineer do hereby declare the nature of this invention and in what
manner the same is to be performed to be ascertained in and by the following
statement :-
My invention relates to certain. improvements in apparatus for measuring the
flow and quantity of liquids, and. has for its object the production of a cheap and.
efficient fluid meter.
In order that my said invention may be the better understood I have appended
the accompanying sheet of drawings in which Figure 1 is a plan view,. Figure 2 a
side sectional elevation; and Figure 3 an end elevation of the apparatus.
Similar letters of reference are used to indicate corresponding parts throughout
the several views.
In carrying my invention. into effect I employ a cylinder or chamber A, suitably
bored for the reception of a floating piston which may freely work within it.
Two covers B. B₁ are arranged to fit the cylinder A and render it a closed
chamber except for the upper and lower ports p p hereinafter to be described.
A spindle D passes through suitable stuffing boxes and glands o o' in the piston C,
so that the latter may traverse it with the minimum of friction, and at the same
time a fluid-tight condition be maintained between the upper and lower surfaces of
said piston C. Two. stops a a' are fixed at a predetermined distance upon the
rod D, so that the piston C in ascending or descending ultimately touches one or
the other of the stops a al and either raises or depresses the rod D, by the momentum
of said movement. A lever e which is fulcrummed at d is. attached by a slotted
yoke c to the rod D, which passes through the top cover B through a stuffing box
and gland b. The shorter end of the lever e is furnished with a slotted link f, or
an equivalent therefor, and carries a valve spindle y upon which is fixed the two
conical equilibrium valves h. ' which are provided with double seats as shewn by
the drawings, and the function of which is to control the inlet and exit respectively
of liquid through the ports ppl. A counter poise k balances the valves / h¹ and
the spindle g and a rod t suitably pivotted or jointed to the rod e is connected
to a ratchet counting device m. I wish it to be understood that I do not confine
myself to any form of counter or index for registering the flow and quantity of
liquid passing through the measuring device, but may employ any such index or
register that can be operated by an intermittent reciprocatory movement such as
that of the rod e.
The manner in which the apparatus according to my invention is operated, is as
follows, that is to say ;-
The liquid to be measured passes through the inlet into the centre of the
valve box W. As the working position of the apparatus is preferably, though not
necessarily, borizontal, the counterpoise retains the equilibrium valves h h¹
in either position until forcibly moved by the action of the piston C when
touching one of the stops a a'. The valve h, may for purposes of illustration, be
considered to be at its lowest position, thus closing the exhaust passage and opening
the port pl to the inlet i. The valve h at this point closes the port p to the inlet
but opens it to the exhaust . Said piston C is then raised by the incoming liquid
until it touches the stop a on the rod D against the weight of the counterpoise k

page_text: upon the lever e until the valve ¹ is closed upon its seat against the inlet i and
opened to the exhaust i', and h is then at the same time opened to the inlet ; and
closed to the exhaust i¹.
The reverse action then takes place, the upper surface of the piston C becomes
operative until the stop a¹ is moved, and by its action reverses the valves hh',
and the consequent motion. Therefore the predetermined volume or quantity
within the spaces above and below the piston C is alternately received and passed
through the apparatus, making a distinct regulated movement or pulsation each
time, the flow being practically continuous if the inlet and outlet i are connected
to a main service or the like. A rod / communicates the movements of the lever e
to an indicating or registering appliance m, which, as hereinbefore stated, need not
consist in any particular arrangement, so that it may be operated by the recipro-
catory movement aforesaid. In order to allow each alternate impulse to operate the
valves properly, a certain amount of clearance is provided at c and also by the slotted
link f.
I may add any accessories or adjunctive appliances to the apparatus for fulfilling
the conditions of various cases of adaptation, without departing from the essential
features of my said invention.
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 ;-
First. In apparatus for measuring liquids the combination of a cylinder or
vessel A, with a floating piston C, rod D and equilibrium valves h. h¹ sub-
stantially as and for the purposes herein described with reference to the appended
drawings.
Second. In apparatus for measuring liquids the combination of an indicator or
registering device m with a lever e cylinder or vessel A and piston C substantially
as herein described with reference to the appended drawings.
Third. In apparatus for measuring liquids the arrangement of a cylinder, piston
and equilibrium valves, substantially as herein described with reference to the
appended drawings.
Duted this 3rd day of July 1895.
FREDK. WALKER,
73 St. Stephen's Road, Upton Park, E., Agent for the Applicant.