Improved Stopper or Means of Closing Bottles, Jars, and other Vessels
Year: 1891

page_text: Date of Application, 26th May, 1891
Complete Specification Left. 26th Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
Improved Stopper or Means of Closing Bottles, Jars, and other
Vessels.
GEORGE BATHGATE 7 Bolton Studios Redcliffe Road London, S.W. Artist do
hereby declare the nature of this invention to be as follows:-
The object of this invention is to combine with a stopper the means of exhausting
the air within the vessel which it closes.
For this purpose the head of the stopper is made cylindrical in form of any
suitable size or diameter in which a piston is inserted which operates as an exhaust
pump. The opening from the cylinder to the interior of the vessel is provided with
a suction valve, and the external opening from the cylinder with a discharge valve..
This apparatus or stopper may be affixed to the mouth of the vessel in any suitable
manner but preferably in the form of a screw stopper. The piston is depressed by
hand and raised preferably by suitable springs.
Dated this 25th day of May 1891
GEORGE BATHGATE.
COMPLETE SPECIFICATION.
Improved Stopper or Means of Closing Bottles, Jars, and other
Vessels.
I GEORGE BATHGATE of No. 7 Bolton Studios, Redcliffe Road, London in the
County of Middlesex Artist 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 object of this invention is to combine with a stopper the means of exhausting
the air within the vessel which it closes.
For this purpose 1 make the stopper as hereinafter described reference being
made to the accompanying drawing in all the figures of which the same part is
indicated by like reference letters.
Figure 1 is a sectional elevation of the stopper with the exhausting device.
Figure 2 is an elevation of the same viewed at right angles to the position
represented by Figure 1.
Figure 3 is a plan of the upper side of Figure 1 and
Figure 4 is a section taken upon the line ab in Figure 1.
A is the cylindrical part of the stopper in which the piston B is inserted to
operate as the piston of a vacuum pump. The opening from the cylinder A to the
interior of the vessel is provided with a suction valve C fitted in a plug D provided
with lateral passages a a¹ and an elastic washer E to bear upon a suitable seating b.
when the plug is screwed into position after the exhausting operation as hereinafter
described. The external opening from the cylinder A is provided with a discharge
valve controlling the passage conveniently made through the piston rod G com-
municating with the atmosphere by the lateral hole c. The piston B is depressed
by hand and raised by the spring Ĥ.
In order not to depend upon the suction valve remaining quite sound for a length
of time after the exhausting operation as may be required I provide upon the lower
side of the piston a projecting key J having a hexagonal opening d to engage
with the hexagonal part of the plug D. By this means the plug D may by partly
rotating the piston rod G when the piston B is at the bottom of the cylinder A, be
screwed up to its seating band so hermetically seal the contents of the stoppered
гр.

page_text: into
vessel independently of the suction valve C. For this purpose provide the
extension button upon the piston rod G and I form an annular groove
which the button K may enter by a vertical opening communicating with the
annular groove e. By this arrangement the piston is carried down in the correct
position for the key J to fit over the plug D and is held thereon while the plug D
remains screwed up to its seating so that the exhausting operation cannot be
resumed without first screwing the plug Daway from its seating to the proper
point to leave the passages a al free at which point alone the piston rod G becomes
released by way of the vertical opening f from the annular groove e.
In the accompanying drawing the vacuum pump is shown as a single acting pump,
the gland nut L consequently performing simply the function of a guide for the
piston rod G and a vent hole being provided to allow free action to the piston.
It is however obvious that the passages of the pump may be arranged to use the
vacuum pump in the form of a double acting air pump in which case the gland
mut L would be provided with suitable packing and the vent holey would be
dispensed with.
1
Through the walls of the stopper provide the passages controlled by jamb
screws to serve in cases where small quantities of liquid such as liquid in drops
are required to be withdrawn without necessitating the removal of the stopper from
the vessel. One of the passages in that case serves as the liquid outlet and the
other as the air inlet. To this air inlet a filter case may be attached if desired so
as to admit to the vessel from which the liquid is poured a supply of filtered air to
take the place of the liquid withdrawn or a supply of air impregnated with any
desired antiseptic material with which the filter case may be charged.
I have described the stopper as one applied to the mouth of a bottle or other
vessel by means of a screw thread but it is obvious that the form of the stopper
may be suitably modified for application in any well known way of applying a
stopper to a. bottle or jar and when the orifice of the bottle or jar is inconveniently
small to admit a piston within the diameter of the said orifice as shown in the
accompanying drawings the part of the stopper employed for making the joint upon
the neck of the bottle or jar may be dependent from the pump cylinder of larger
diameter a passage through the stoppering portion being made to communicate
with the passages of the pumping device as will be readily understood.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is -
1. The combination with a stopper for bottles jars and other vessels of a vacuum
pump device substantially as and for the purpose described.
2. In a combined stopper for bottles jars and other vessels and vacuum pump
device the arrangement of the suction valve fitted within a plug serving to
permanently close the air way from within the bottle jar or other vessel to the said
suction valve substantially as and for the purpose described.
3. The combination of the extension button K the annular groove e with a
vertical opening and the key J upon the piston B whereby after closing the air
passage to the suction valve C the pumping operation cannot be continued until the
said air passages have been again freed substantially as described.
Dated this 25th day of February 1892.
AYRTON & THOMAS,
Agents for the Applicant.