Improvements in or connected with Syphons for Containing Aerated Liquids.
Year: 1891

page_text: Date of Application, 16th Mar., 1891-Accepted, 18th Apr., 1891
Improvements in or connected with Syphons for Containing
Aerated Liquids.
I. WILLIAM HOLME DAVIS, of 64. St. Paul's Road, Thornton Heath, Surrey,
Gentleman, 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 has for object, the filling of aerated liquid bottles, termed syphons
from the head or upper part and to so arrange the inside fittings that a valve has
free play in a tubular aperture, said valve being forced against a seating in the
head when the syphon is charged, and to rest upon a perforated diaphragm when
the syphon is empty, or the gas discharged.
The perforated diaphragm rests on an opening, or on a short tube leading to the
interior of the syphon as a continuation of the filling passage, at which part I
arrange the packing of rubber, or other material for making a liquid and gas tight
joint between the bottle and the head thereof, which head is preferably of metal
and held in close contact with the neck ring of the bottle by screw ferrules.
The exit tube within the bottle is attached to a socket screwed into an upper
neck ring and leads to a passage forming part of the outlet to the nozzle.
Above
the socket and within a chamber in the head is a valve kept on its seat by a
spring, the pressure of which can be overcome by pressure on a hand lever, this
having a knuckle in a slot of a plunger, the lower end of which has the valve last
referred to.
The exit tube within the bottle may be straight throughout its length, or
be kinked, or contracted at any desired part to prevent a too sudden rush of gas
through it when the syphon is opened for the passage of the contents.
The invention will be clearly understood by the annexed drawings.
Figure 1 is a part sectional elevation of a syphon with one arrangement of parts
in the head, the bottle having a parallel exit tube within it.
Figure 2, a section of the head on the line a, b, of Figure 1.
Figure 3, a detached view of an exit tube with a contracted part.
Figure 4 is a part sectional elevation of a syphon with a slightly different
arrangement of packing and ferrule fastener and the packing portion having a
short tube between the filling aperture and the interior of the bottle.
Figure 5 part sectional elevation of aerated liquid syphon in which the usual
plunger lever and valve are dispensed with and a tap on the outlet spout
substituted.
Figure 6 part sectional elevation of a syphon in which the outlet valve can be
operated for opening purposes by a push down button.
All the letters of reference in the several figures refer to the same parts as
far as permissible.
A. The bottle of which I have adopted the well known shape for convenience.
B. Lower neck ring preferably in two halves to encircle the neck and provided
with a screw thread on the exterior.
C. Upper neck ring to partly cover mouth of bottle and provided with internal
screw thread to engage the thread of the lower ring and making a tight joint, which
joint may have a rubber ring, or a small quantity of cement as a packing, if
desired.
D. Ferrule, screw threaded internally and having internal flange for engaging
under shoulder of upper neck ring.

page_text: draw it into close contact with
F, the intermediate packing, this having two holes, one to correspond with the
filling passage, and one with the exit passage.
G. Filling passage in head E, the exterior top of which is shaped for the ready
application of the nozzle of the reservoir, in which the main supply of aerated
liquid is stored.
H. Drop valve of triangular shape at body part only.
1. Enlarged chamber forming a continuation of filling passage to interior of
bottle A.
The drop valve when up, as shown at Figure 1, is forced against its seating by the
internal pressure but when the bottle is reversed for filling, the inflowing pressure
lifts it from the seat and the aerated liquid flows past the wings formed by the
triangle portion until the supply is turned off, the internal pressure then closing
the valve again.
J. Perforated diaphragm, on which the drop valve H rests when the bottle is
empty.
K. Exit tube with lower end just above internal bottom of bottle A..
L. Socket tube affixed to upper neck ring F and having the upper end of exit
tube cemented therein.
M. Valve, covering the exit passage of K.
N. Plunger with valve M affixed at lower end.
P. Spring exerting pressure on plunger N to keep valve M on its seat.
Q. Hand lever by which plunger N can be lifted and spring P compressed when
the valve M has to be lifted for outflow of aerated liquid, said lever being loosely
pivotted on a pin passed through lugs in the usual manner.
R. Chamber (see Figure 2) in which plunger N works.
S. Passage in head E, this commences just above the seating of valve M in the
wall of the chamber R and rises upwards to a height about level with the upper
part of the outlet
T, it then runs at right angles, as at T, and terminates with
U, the spout.
V, Figure 3, is a contracted part of the exit tube K, this, if used, checks the
outflow of the aerated liquid from the bottle A and prevents unnecessary agitation
of liquid and a consequent rapid escape of gas after leaving the spont U, as is
usual, the liquid becoming thereby flat and tasteless in a very short time. The
liquid by this method retains the gas for a long period after being drawn. The
flavour of the liquid is kept more uniform and consequently the liquid more palatable
as a drink.
The packing at Figure 1 is indicated by a single washer of tastelessly cured
india rubber but at Figure 4, I show two of such washers with an intervening metal
dise W, this enables a peg X to be employed in conjunction with a projecting end
of a short tube Y for the proper placing of the head E and of the upper neck
ring C of Figure 1 to be dispensed with. The ferrule D by acting against a
shoulder of the head enables the packing to be compressed to make a tight joint
when the ferrule D is screwed down upon the lower neck ring B.
This arrangement of ferrule D can be readily affixed to the head E by first
making its internal diameter to pass over the lower end of the head E and then by
squeezing the upper end of the ferrule into close contact upon the tapered portion Z
of the head.
I may dispense with the plunger N, spring P, and lever Q and provide the spout
with a tap M to enable the aerated liquid to be drawn off when the tap is operated
in the proper manner, as will be understood by referring to Figure 5, the separate
filling aperture being retained.
I purpose also to arrange a push down button Z' and valve M in the draw off
portion of a syphon head E, as indicated at Figure 6.
1

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what 1
claim is :-
1. The construction of heads of aerated liquid syphons with an aperture separate
from that of the outlet to enable said syphons to be filled, or charged direct from
a reservoir, or storage tank, as described, and substantially by the arrangements
shown on the drawings.
2. In combination with a separate aperture in the head of a syphon for filling
purposes, a valve in such filling aperture, or passage, as and for the purposes
described.
3. The particular arrangement of parts and their passages in a head of a
syphon, as shown at Figures 1 and 2 of the annexed drawings, whereby the
filling can be effected through one part and the emptying through another part, as
set forth.
4. The arrangement or method of securing heads on syphon bottles with screw
rings and intermediate packing shown at Figures 1 and 4, as set forth.
5. The arrangement of appliances and passages in the head of a syphon,
substantially as shown at Figure 4 of the annexed drawings for the purposes
described.
6. The arrangement of appliances and passages with tap in nozzle of syphon
head, as described with reference to Figure 5 of the annexed drawings.
7. The arrangement of parts of the head, and the method of fitting them in
position in or to a syphon bottle, said head having a push down button, as
described with reference to Figure 6 of the annexed drawings.
1001
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said W. H. Davis.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said W. H. Davis.