Improved Apparatus for Facilitating the Measuring Out of Liquids.
Year: 1890

page_text: Date of Application, 10th Jan., 1890
Complete Specification Left, 8th Oct., 1890-Accepted, 20th Dec., 1890
PROVISIONAL SPECIFICATION.
Improved Apparatus for Facilitating the Measuring Out of Liquids.
I VICTOR CHARLES MONETTE, Pharmaceutical Chemist, of 23 Boulevard de
Strasbourg, Paris in the Republic of France, do hereby declare the nature of this
invention to be as follows:-
The present invention relates to an arrangement of apparatus by the use of which
the quantity of liquid allowed to fall drop by drop from a bottle may be regulated.
The arrangement which permits of this regulation is put in action by the pressure
of the finger; it is arranged within the metallic stopper, and it controls the passage
by which the liquid issues from the bottle, and the tube by which the air enters.
The arrangement and action of my drop counting apparatus will be well under-
stood by the following description.
The stopper is composed of a metallic piece terminating at top in a cone, and
having at the part which enters the neck of the bottle, a cylindrical portion, on
which is placed a packing of india rubber, which forms a close joint in the neck of
the bottle.
The stopper is pierced in the line of its axis to form a passage for the liquid, and a
parallel passage is likewise provided in which is fixed the tube extending to near the
bottom of the bottle, which serves as an air inlet. At the upper part of the stopper,
and transversely to these passages, is formed a cylindrical opening, wherein is a
small piston provided with an exterior push button. A flat spring presses against
the inner end of the piston.
When in its normal position the inmost part of the piston closes the liquid passage,
and another part of the piston likewise closes the air passage. The piston between
these two parts is of less of diameter, so that if the thumb be pressed upon the push
button, and the piston thereby advanced against the pressure of the spring, the
narrow part of the piston will be brought opposite the liquid passage, and the liquid
can then pass out, if the bottle be inclined. At the same time, the air inlet passage
will be opened, and the exterior air entering the hole through which the connecting
rod between the piston and the button passes, will be allowed to enter the bottle.
It will thus be seen, that if the exit passage of the bottle, when open, permits
only a drop by drop discharge of the liquid contained therein, it will be easy, with
the aid of the push piston just described, to count off any number of drops that
may be required, and to stop the flow of liquid at any instant with perfect accuracy.
Dated this 10th day of January 1890.
"
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Apparatus for Facilitating the Measuring Out of Liquids.
I, VICTOR CHARLES MONETTE, Pharmaceutical Chemist of 23, Boulevard de
Strasbourg, Paris in the Republic of France, 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 :-
The present invention relates to an arrangement of apparatus by the use of which
bottle may be
the quantity of liquid allowed to fall drop by drop from a
regulated.
The arrangement which permits of this regulation is put in action by the pressure
of the finger; it is arranged within the metallic stopper, and it controls the passage
by which the liquid issues from the bottle, and the tube by which the air enters.

page_text: The arrangement and action of my drop-counting apparatus will be well under-
stood by the following description, reference being made to the accompanying
drawing, in which :-
Fig. 1 shows the stopper in vertical section ;
Fig. 2 is a front view of the same; and,
Fig. 3 a horizontal section of the stopper, taken on the line M, N of Fig. 1.
The stopper is composed of a metallic piece A, terminating at top in a cone C, and
having, at the part which enters the neck of the bottle, a cylindrical portion a, on
which is placed a packing of india rubber b, which forms a close joint in the neck of
the bottle.
The stopper is pierced in the line of its axis to form a passage o for the liquid,
and a parallel passage d is likewise provided, in which is fixed the tube e, extending
to near the bottom of the bottle, which serves as an air inlet. At the upper part of
the stopper, and transversely to these passages, is formed a cylindrical opening f
wherein is a small piston p, provided with an exterior push button g. A flat spring h
presses against the inner end of the piston.
The piston is round, and of full size at p, to close the passage o; at p¹ it is half
cut away, as shewn in the detached sectional view Fig. 4. At p² it is round, and
of full size, and its stem or rod p³ is square, to work in the guide or slot i, Figure 2,
formed in a piece k let into the flange of the stopper, and serving also to retain the
piston in place against the pressure of the spring h.
When in its normal position, the inmost part of the piston closes the liquid
passage o, and another part p² of the piston likewise closes the air passage. The
piston between these parts is of smaller diameter, as shewn at ₁, so that if the
thumb be pressed upon the push button g, as shewn in Fig. 5, and the piston thereby
advanced against the pressure of the spring h, the narrow part p₁ of the piston will
be brought opposite the liquid passage o, and the liquid can then pass out, if the
bottle be inclined. At the same time, the air inlet passage d will be opened, and
the exterior air, entering the hole through which the rod p³ passes, will enter the
bottle.
It will thus be seen, that if the exit passage of the bottle, when open, permits
only a drop by drop discharge of the liquid contained therein, it will be easy,
with the aid of the push button just described, to count off any number of drops
that may be required, and to stop the flow of liquid at any instant, with perfect
accuracy.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
The apparatus for measuring liquids drop by drop as shewn and described.
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