An Apparatus for Drawing Off Measured Quantities of Liquid, and Obtaining a Record of the Quantity so Drawn.
Year: 1894

page_text: Date of Application, 1st Mar., 1894
Complete Specification Left, 3rd Dec., 1894-Accepted, 5th Jan., 1895
PROVISIONAL SPECIFICATION.
An Apparatus for Drawing Off Measured Quantities of Liquid, and
Obtaining a Record of the Quantity so Drawn.
We, FRANCIS HENRY NALDER, HERBERT NALDER, CHARLES WILLIAM
SCOTT CRAWLEY and ALFRED SOAMES, all of 16 Red Lion Street Clerkenwell
in the County of Middlesex Electrical Engineers do hereby declare the nature
of this invention to be as follows:-
Our apparatus consists of a cylinder closed at both ends, and having one end in
connection with the source of supply of the liquid to be measured off as it is
drawn.
A piston which can be pushed in to any desired distance, dependant on the
amount to be drawn a valve or equivalent arrangement to allow the liquid to pass
from the source of supply to the opposite side of the piston when the latter is
pushed in, on which end of the cylinder there is a tap or valve normally closed.
The piston is pressed into the cylinder by any convenient means such as a loose
arm pressing against the piston rod, such arm just before arriving at the end of its
return stroke or equivalent, opens the tap at the end of the cylinder, thus allowing
the liquid that has passed the piston to escape to an outlet, the piston following it.
On the piston reaching the end of its stroke it may automatically close the tap
again or allow it to close, or we may have the tap on the inlet pipe, and work
in the equivalent way.
To obtain a record of the quantity drawn, we cause the motion of the piston rod or
other convenient moving part to actuate a counter or counters in any desired ratio
to the movement of the piston, and therefore to the quantity drawn.
The counter may be actuated by any well known mechanical or electrical
means.
Dated this lat dow of Moh 1801
FRAS. H. NALDER.
HERBERT NALDER.
C. W. S. CRAWLEY.
ALFRED SOAMES.
An Apparatus for Drawing Off Measured Quantities of Liquid, and
Obtaining a Record of the Quantity so Drawn.
We, FRANCIS HENRY NALDER, HERBERT NALDER, CHARLES WILLIAM
SCOTT CRAWLEY, and ALFRED SOAMES, all of 16 Red Lion Street, Clerkenwell,
in the County of Middlesex, Electrical Engineers, 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 :-
Our apparatus consists of a cylinder closed at both ends and having one end in
connection with the source of supply of the liquid to be measured off as it is
drawn.
A piston which can be pushed in to any desired distance dependent on the amount

page_text: to be drawn; a valve or equivalent arrangement to allow the liquid to pass from the
source of supply to the opposite side of the piston when the latter is pushed in, and
a tap or valve; normally closed, at the outlet end of the cylinder.
The piston is pressed into the cylinder by any convenient means such as a loose
arm pressing against the piston rod, such arm just before arriving at the end of its
return stroke or equivalent, opens the tap at the end of the cylinder, thus allowing
the liquid that has passed the piston to escape to an outlet, the piston following it.
On the piston reaching the end of its stroke it automatically closes the tap
again or allows it to close. Or we may have the tap on the inlet pipe and work in
the equivalent way.
To obtain a record of the quantity drawn we cause the motion of the piston rod
or other convenient moving part to actuate a counter or counters in ratio to the
movement of the piston and therefore to register the quantity drawn.
The counter may be actuated by any well known mechanical or electrical
meaus.
The annexed drawing shows apparatus in accordance with our invention.
a is a cylinder and is a pipe connecting this cylinder with the cask or other vessel
from which the liquid is to be drawn; this cask or vessel we will assume to be
elevated somewhat above the cylinder. can outlet pipe through which the liquid
is delivered in measured quantities from the cylinder. d is a piston working within
the cylinder. is a bye-pass pipe by which liquid may pass from one side of the
piston to the other. f is a three way cock controlling the bye-pass and the outlet.
is a spring which normally holds the cock in such a position that the bye-pass is
open and the outlet is closed. h is a catch rod jointed to an arm on the plug of the
cock, it serves at suitable times to hold the cock so that the outlet is open and the
bye-pass is closed. i is a lever handle, it is fixed upon a short axis carried by
the frame. k is a toothed are fast on the same axis with the handle. is a slide
having rack teeth engaging with the arc k; the slide 1 can thus be moved up and
down by means of the handle. is an arm fixed upon the slide at its upper end, it
serves two purposes, it presses upon the head d' of the piston rod and so moves the
piston when the slide descends and in the upward movement of the slide it engages
with the catch rod h.
The apparatus operates in the following manner :-When it is desired to draw a
measured quantity of liquid the handle i is drawn down as far as a stop permits.
There are several such stops and one or other can be placed in position to arrest the
downward movement of the handle according as a larger or smaller measure is
desired to be drawn. The slide moving downwards with the handle its arm l
depresses the piston and the bye-pass being open a measure of liquid passes from its
under to its upper side. The handle and slide being then moved upwards the arm!
engages the catch rod h, lifts it and so alters the position of the cock. The outlet is
now open and the liquid above the piston commences to flow out the piston rising with
the pressure of the liquid beneath, or it might be by an external force acting upon
it. As the piston comes to the top of the cylinder the head d' on the piston rod
moves the catch rod so as to free it from the arm . The cock fis then moved by
the operation of the spring and now closes the outlet and again opens the bye-pass
and all is thus left ready for another operation. The counting mechanism may be
thus arranged. m is a chain, it is attached to the piston rod and also to the
periphery of a barrel n around which the chain is lapped.
Another chain o is in like manner lapped on the drum and this chain is attached
to the spring p. Hence as the piston moves up and down the drum is made to rotate
first in one direction and then in the other. On an axis concentric with that of the
barrel n is a wheel q with fine ratchet teeth and a pawl n' on the barrel engages the
teeth. So the movement of the piston in one direction moves the wheel whilst
the movement in the other direction leaves it at rest. The wheel drives a train
of counting wheels as in the counter of a gas meter and this train by moving hands
around suitably graduated dials records the total quantity drawn.
9
The counting mechanism may however be arranged in many other ways.

page_text: Also in place of the three way cock being upon the delivery passage it may
control the inlet and the bye-pass with similar results.
The form of the cock or valve also may be varied for example two separate cocks
may be substituted for a three way cock; one cock in this case would control the.
bye-pass and the other either the outlet or the inlet passage and the cocks would
be so connected that as one opens the other closes..
Having now particularly described and ascertained the nature of our said.
invention and in what manner the same is to be performed, we declare that.
what we claim is :-
1. The combination of apparatus consisting of the cylinder with its inlet and
outlet connections, the piston, the bye-pass, the arc or like part actuated by the
handle which first moves the piston and then the valve and the catch which is
released by the return movement of the piston permitting the valve to regain its.
normal position.
2. Apparatus substantially as described and shown by the annexed drawing.
Deted this 2nd day of December 1801
FRAS. H. NALDER.
HERBERT NALDER..
C. W. S. CRAWLEY.
ALFRED SOAMES.