IMPROVEMENTS IN APPARATUS FOR DRAWING OFF AND MEASURING FLUIDS
Year: 1863

page_text: LETTERS PATENT to Henry Philip Forrest, of Worksop, in the County
of Nottingham, Ironmonger, for the Invention of "IMPROVEMENTS IN
APPARATUS FOR DRAWING OFF AND MEASURING FLUIDS."
Sealed the 27th May 1864, and dated the 24th December 1863.
PROVISIONAL SPECIFICATION left by the said Henry Philip Forrest
at the Office of the Commissioners of Patents, with his Petition, on the
24th December 1863.
I, HENRY PHILIP FORREST, of Worksop, in the County of Nottingham,
Ironmonger, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN APPARATUS FOR DRAWING OFF AND MEASURING FLUIDS," to be as
follows:-
This apparatus, which is more particularly applicable to drawing off and
measuring paraffin and other volatile fluids, consists of a measuring vessel (of
one gallon or other definite capacity) to be attached by a communicating pipe
and cock to the cistern or reservoir containing the fluid. In front of and
communicating with this measuring vessel there is a graduated guage glass
which indicates any fractional quantity of fluid contained in the measuring
vessel from which it can be drawn by opening a cock at its lower end, thus
avoiding the use of loose measures or funnels. At the upper part of the
measuring vessel there is a small opening for the entrance or exit of the air,
which entrance is closed by a floating valve when the measuring vessel is

page_text: gauze to
filled with fluid. This orifice has a cap or covering of fine wire
prevent the ignition and explosion of the vapour of any volatile fluid within
the measuring vessel.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Philip Forrest in the Great Seal Patent Office on
the 22nd June 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
PHILIP FORREST, of Worksop, in the County of Nottingham, Ironmonger, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of December, in the year of our
Lord One thousand eight hundred and sixty-three, in the twenty-seventh year
of Her reign, did, for Herself, Her heirs and successors, give and grant unto
.me, the said Henry Philip Forrest, Her special licence that I, the said Henry
Philip Forrest, my executors, administrators, and assigns, or such others as J,
the said Henry Philip Forrest, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
IMPROVEMENTS IN APPARATUS FOR DRAWING OFF AND MEASURING FLUIDS,"
upon the condition (amongst others) that I, the said Henry Philip Forrest,
my executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date of
the said Letters Patent.
NOW KNOW YE, that I, the said Henry Philip Forrest, do hereby
declare the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say:-
This apparatus, which is applicable to drawing off and measuring of all
kinds of liquids, but more particularly of paraffin and other volatile fluids,
consists of a measuring vessel of one gallon, one quart, or other definite
capacity, to be attached to the cistern or reservoir containing the fluid. In

page_text: front of and communicating with this measuring vessel there is a graduated
gauge glass which indicates any fractional quantities of fluid contained in the
measuring vessel, from which it can be drawn by opening a cock at its lower
end, thus avoiding the necessity for loose measures and funnels.
At the upper
part of the measuring vessel there is a small opening for the entrance and exit
of the air, which entrance may be closed by a floating valve when the
measuring vessel is filled with fluid. This orifice has a covering of fine wire
gauze to prevent the ignition of any explosive vapor that may be formed
within the measuring vessel.
And in order that the nature of this my Invention may be clearly under-
stood reference is had to the Drawings hereunto annexed, and to the letters
and figures marked thereon, that is to say:
Figure is a sectional elevation of the apparatus. A is a cistern or
reservoir containing the stock of paraffin or other liquid; B is the measuring
vessel (in this case of the capacity of one quart); C, C, are circular discs of
metal, earthenware, or glass, of nearly the same diameter as the containing
vessel B, supported in their places by the central stem ; D is the supply
pipe for conveying the liquid from the reservoir A to the measuring vessel
B furnished with a stop cock at d; E is an outlet spout with a stop cock e for
drawing off the fluid from the measuring vessel B; F is a graduated glass
tube in free communication with the vessel B, and marked with the fractional
parts of a quart; G is an opening at the upper part of the vessel B for the
entrance and exit of air, protected by finely perforated metal or fine wire gauze
to prevent the ignition of any explosive vapour that may be formed within the
vessel B. When any quantity of the liquid is to be drawn off, the cock e
being closed the cock d is opened, when the liquid flows into the vessel B and
to a corresponding level in the graduated glass tube F; as soon as the required
quantity is indicated by the height of the liquid in the tube F, the cock dis
closed and the liquid may be drawn off into the can or bottle placed to receive
it by opening the cock e. The object of the circular discs C, C, fixed at the
several measuring points is to occupy the space and ensure accuracy in the
measurement, a small quantity over or under the required quantity being
perceptibly indicated by the level of the fluid in the graduated tube F.
Figure 2 shows another modification of the apparatus, in which the discs
are dispensed with. A is the reservoir; D, the supply pipe leading to the
measuring vessel B, which is formed of a series of chambers c², c², connected
by a contracted passage; F is the graduated glass tube; E, the outlet.
And having clearly described the nature of my said Invention, and the
manner of performing the same, I desire it to be understood that I claim the

page_text: improvements in apparatus for drawing off and measuring fluids substantially as
herein-before described and shown in the accompanying Drawings; especially
the method of contracting the capacity of the measuring vessel at the several
measuring points by discs or otherwise.
In witness whereof, I, the said Henry Philip Forrest, have hereunto
set my hand and seal, this Twentieth day of June, in the year of our
Lord One thousand eight hundred and sixty-four.
HENRY PHILIP FORREST. (L.S.)