Improved Apparatus for Discharging Measured Quantities of Liquids from Bottles, Cans, and like Receptacles.
Year: 1897

page_text: Date of Application, 30th Apr., 1897-Accepted, 3rd July, 1897.
COMPLETE
SPECIFICATION.
Improved Apparatus for Discharging Measured Quantities of Liquids
from Bottles, Cans, and like Receptacles.
I, THOMAS M. RICHARDSON, Merchant, residing at Oklahoma City, in the
Territory of Oklahoma, United States of America, 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 apparatus embodying this invention is intended for delivering liquids in
any desired quantity by forcing air into the closed receptacles containing them.
Important objects sought are: To avoid all dripping of residual liquid from the
discharging passage; to prevent escape of volatile liquids; to have the devices
readily applicable to ordinary vessels and as readily detachable from them; to
make that portion of the apparatus that comes in contact with the liquids so cheap
that it may be duplicated and permanently combined with each vessel with which
the devices are to be used; and to make the remaining portion of the device such
as to be readily transferable from one vessel to another, for temporary use with
any one of the duplicate portions just mentioned.
When thus constructed, the apparatus is perfectly adapted for use with the large
cans ordinarily used for containing milk that is to be delivered in small quantities,
and is equally suitable for use in drug-stores, or in other situations where many
different liquids are handled and where time is important and dripping
objectionable.
In the accompanying drawings,
Fig. 1 shows the devices applied to an ordinary oil can for household use.
Fig. 2 shows the manner of applying the invention to bottles or the like.
Fig. 3 shows the screw-cap of Fig. 1, partly in section.
Fig. 4 shows a stopper-receiving threaded sleeve to be inserted in a threaded neck
cf certain vessels.
Fig. 5 shows a rubber cap that may replace a certain cap of Fig. 1.
Fig. 6 shows the stopper of Fig. 2 in position for insertion in a different vessel.
In Figs: 1 and 3, A is an ordinary spoutless can provided with a screw cap B
from which depend conical tubes C, C, in which, respectively, are inserted pre-
ferably elastic perforated stoppers D, D¹. Through the stopper D passes one arm
of a U-shaped discharge tube E the arm being long enough to reach the bottom of
the vessel and arranged to slide in the stopper while making a practically air-tight
jcint therewith. From the perforation in the other stopper, a pipe leads to an
air forcing device of any suitable form, an elastic bulb, F, provided with an air
valve F¹ being chosen for illustration. Above the closure, upon that arm
of the tube which passes through the stopper, is placed a sliding ring G, and to
this are attached, by means of chains H or the like, the air forcing device and a
metal cap I, for closing the outer end of the tube E. The air forcing device is
readily detachable from the ring G and from the closure, and hence if a series of
vessels be each provided with the other devices, the air forcing device may be used
with each of them.
Now when the parts are all properly formed and adjusted, if air be forced into

page_text: the vessels by the devices F, a corresponding quantity of liquid will be forced out
through the delivery tube E. As soon as the air ceases to enter, the liquid in the
outer arm of the tube runs out while that in the other arm falls to the level of the
liquid in the vessel. If then air be forced into the vessel suddenly, for an instant,
the rise of the liquid in the inner arm forces the air quickly outward in the outer
arm and thus blows out any adherent liquid that might otherwise drip from the
tube later.
Fig. 2 shows, instead of the screw-cap, a single elastic stopper J, having two
perforations to receive, respectively, the discharge and inlet tubes.
For vessels having an internally threaded neck, the externally threaded
sleeve K may be used to receive the stopper of Figs. 2, 6.
Where the liquid concerned is very volatile and not injurious to rubber, I employ
the elastic cap in place of the metal cap I, because the accurate fitting of a metal
cap is comparatively expensive. A cap is, in any case, preferred to a plug because
the residual liquid in the outer arm is not as perfectly blown out if the tube is
adapted to receive a plug.
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
1+
1. Th
laura of an air forcing device mounted thereon
and arranged to force air into a channel leading through the closure to the interio
of the vessel to which it may be applied, a tube bent to U-shape, having one arm
passed through the closure into said interior, and arranged for longitudinal
adjustment in the closure, a cap for closing the outer end of said tube, a ring sliding
upon the arm above the closure, and flexible connections attaching both said air
forcing device and the cap to said ring.
2. The combination with a vessel having a screw-threaded neck, of a threaded
cap, for closing said neck,provided with two conical openings leading to the interior
of the vessel, two perforated stoppers removably fitted in said openings respectively,
tube bent to U-shape and having an arm sliding in the perforation in one of the
stoppers, a ring sliding upon said arm above the stopper, an air forcing device
mounted upon the cap and having a delivery tube fitting the perforation in the
other stopper, a cap for closing the other arm of the U-shaped tube, and flexible
connections attaching both said air forcing device and said cap to the ring,
substantially as and for the purpose set forth
Dated this 30th day of Anril 1897