An Improved Measuring Tap or Apparatus.
Year: 1896

page_text: Date of Application, 19th June, 1890
Complete Specification Left, 18th Mar.. 1897-Accepted, 24th Apr.. 1897
Date
Application, 19th June, 1890
Complete Specification Left, 18th Mar., 1897-Accepted, 24th Apr., 1897
An Improved Measuring Tap or Apparatus.
We, EDWARD STOWE CANNELL, Hellesdon, and GEORGE FRANCIS HARVEY,
of The Elms, Thorpe, both of Norwich, in the County of Norfolk, Engineers, do
hereby declare the nature of this invention to be as follows:-
This invention relates to an improved tap or apparatus for drawing measured
quantities of liquid from casks and other vessels.
According to our invention we provide a reservoir designed to hold the requisite
quantity of liquid to be delivered, which reservoir is preferably cylindrical in shape
and is connected at its centre to the plug of the tap. The ends of the reservoir are
in communication by means of suitable passages, with passages in the plug and the
passages in the plug are in communication with the source of supply of the
liquid and with an outlet tube, the openings in the plug being diametrically
opposite to one another.
A loose or free piston is arranged in the reservoir 30 that when the latter
is reversed by rotating the plug the piston drops from one end to the other of the
said reservoir.
The action of the device is as follows:-The piston being at the bottom of the
reservoir the plug is in position to allow the liquor to be measured to flow into the
reservoir. The reservoir is then reversed whereby the opening in the plug which
was in connection with the supply comes opposite the outlet tube. The piston then
drops and forces the liquid in the vessel out through the plug into the outlet tube
and a fresh supply of liquid enters above the piston.
In practice we find it advantageous to provide means such as screws at the ends
of the reservoir whereby the length of stroke of the piston can be adjusted in order
to accurately measure the quantity of liquid to be delivered.
We also find it advantageous to arrange an ordinary cock in conjunction with
our measuring tap for cutting off the supply of liquid thereto when desired.
Dated the 19th day of June 1896.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
An Improved Measuring Tap or Apparatus.
We, EDWARD STOWE CANNELL, of Hellesdon, and GEORGE FRANCIS HARVEY,
of The Elins, Thorpe, both in Norwich, in the County of Norfolk, 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:―
This invention relates to an improved tap or apparatus for drawing measured
quantities of liquid from casks and other vessels.

page_text: '
According to our invention we provide a chamber designed to hold the requisite
quantity of liquid to be delivered, which chamber is preferably cylindrical in shape
and is connected at its centre to the plug of the tap. The ends of the chamber are
in communication by means of suitable passages, with passages in the plug and the
passages in the plug are in communication with the source of supply of the liquid
and with an outlet tube, the openings in the plug being diametrically opposite to
one another.
A loose or free piston is arranged in the chamber so that when the latter
is reversed by rotating the plug the piston drops from one end to the other of the
said chamber.
To enable our invention to be fully understood we will describe the same by
reference to the accompanying drawing which is a sectional elevation of our
improved measuring tap.
a is the shell of the tap which has formed integral with it the stem b, having the
passage & through it, and the discharge nozzle or spout c. As shewn in the drawing
the stem 6 is adapted to be inserted into a cask or barrel but it may be otherwise
constructed at its end according to the kind of reservoir or vessel to which it is to
be applied.
d is the measuring chamber having the covers d', d', and e is the plug of the tap
which, as shewn in the drawing, is formed in one with the measuring chamber the
said plug having in it passages, g which communicate through passages f', g' with
ports f, g at the two ends of the said chamber.
is the piston which fits the said chamber and is adapted to slide therein by
gravity.
The operation of the measuring apparatus hereinbefore described is as follows:-
Assume the meastiring chamber to be in the position shewn in the drawing and the
piston h to be at the upper end of the said chamber, as the piston drops the liquid
from the cask flows through the passages 1, 7 and 7' and the port f into the space
above the piston and fills the same, the air beneath the piston passing out through
the port and the passages gl and g and the spout c.
When the chamber d is
reversed, in order to again bring the piston to the top, the said piston in falling
forces out the liquid beneath it whilst at the same time a fresh supply of liquid
flows into the chamber d from the supply vessel.
It will be understood that each time the chamber dis reversed a quantity
of liquid is delivered corresponding to the capacity of the said chamber above the
piston.
In order to be able to more or less adjust this capacity we find it advantageous
to arrange screws such as i, i in the ends of the piston whereby the length of the.
stroke of the same can be regulated.
With the arrangement herein before described it is unnecessary to make provision
for the escape of air, as when the piston falls to deliver one measured quantity
of liquid the space above the piston is filled so that at all times the apparatus is
ready for the delivery of a measured quantity of liquid.
We usually find it advantageous to arrange in conjunction with our measuring
apparatus an ordinary cock for cutting off the supply of liquid when desired.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what
we claim is :-.
1. A measuring tap or apparatus wherein a measuring chamber having a free
piston within it is combined with the rotating plug of a tap having in it passages
communicating with the two ends of the said measuring chamber the said passages
being so arranged that one communicates with the supply passage and the other
with the discharge passage in the shell of the cock, and that each passage can be,
alternately placed in communication with the said supply passage and the discharge
passage, substantially as described.

page_text: 2. The manufacture and use of the improved measuring tap or apparatus herein--
before described and illustrated in the accompanying drawing.
Dated this 18th day of March 1897.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants..