Improvements in the Construction of Syphon Bottles.
Year: 1891

page_text: Date of Application, 29th Oct., 1891-Accepted, 22nd Oct., 1392
COMPLETE SPECIFICATION.
Improvements in the Construction of Syphon Bottles.
THOMAS HOWELL WILLIAMS of 10 Ascham Street Kentish Town in the
County of Middlesex Manufacturing Chemist and WILLIAM HENRY SYMONS of
130 Fellows Road South Hampstead in the same County Consulting Chemist 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:-
Our invention is for improvements in the construction of syphon bottles.
Our invention consists in having the lower part of the piston rod encased in an
outer casing or tube of glass or earthenware such casing or tube being in one piece
with the valve plug which is constructed of the same material. The method by
which we prefer to do this is by having a small bulb blown or moulded at the end
of a piece of glass tube or a piece of earthenware or other suitable material
moulded in the same form. The size and shape which answers all necessary
purposes is shown in Figure 1 but the bulb may be in any desired form. A small
quantity of tin or other easily fusible substance is inserted in the bulbous ended
tube and the tube and bulb are then heated until the tin or other material is fused.
The piston rod which may be of brass or other suitable material having been
heated and if necessary coated by dipping same in hydrochloric acid and then in tin
is pressed into the tube and fused metal therein but not necessarily down to the
bottom of the bulb and as the metal cools becomes firmly attached to the glass or
earthenware covering. Sulphur or other suitable metal or cement which sets
easily may be used for the same purpose. It is desirable that the bulb and such
portion of the tube as is not occupied. by the piston rod should be filled with the
fused metal or other cement as strength is thereby imparted to the whole. The
piston rod may if necessary be threaded. The drawings annexed which are merely
for the purpose of illustration shew the syphon head with the lever and spring
omitted. If it is desired to prevent oxidisation where metals are used for joining
together the piston rod and tube it is advisable to let the fusion take place in an
atmosphere or a medium free from oxygen. The bulbous portion of the valve
plug can if preferred be wholly or partly covered with india rubber but if this is
done it is desirable to have a small flange on the glass or earthenware tube just
above the bulb as shewn in Figure 3 where the valve plug is represented covered
with rubber. The object of this flange is to keep the rubber in position.
When thus prepared the covered piston rod can be inserted into the syphon head
from beneath and the rubber covered bulb brought into contact with a suitable bed
or seating to form an ordinary gastight valve. A rubber washer can then be slipped
over the piston rod from above and a thin metal washer superimposed to carry the
spring of the syphon in the usual manner. The upper portion of the piston rod
is allowed to project a short distance from the tube or casing and such projection is
conveniently threaded for the purpose of attaching the tighe or head on which the
lever which operates the valve works such tighe or head containing a corresponding
female screw Fig. 3. Or such tighe or head can be attached in any other
convenient manner. If desired a thin tube or coil of metal or other suitable
substance can by way of protection be put round the covered piston rod and between
it and the spring to prevent contact between the two.
Or the tube or casing need not be carried so high up the piston rod as shewn in
Figure 5 but only so high as to stand above the rubber washer before mentioned
when the valve is open as shewn in Fig. 6 with a small flange to strengthen its edge
if desired. The tube may be continued by a metal tube of the same or nearly the
same size up to or nearly up to the place where the tighe or head is attached or

page_text: such metal rod may unite the two as in Fig. 5 or the piston rod itself may be
enlarged above the glass or earthenware tube and preferably to the same thickness.
The other portions of the syphon head are in the usual form.
Another convenient method of using the covered piston rod is to leave the valve
plug uncovered and omit the flange and to construct the valve seating as shewn in
Fig. 7 of a thick rubber washer having a hole in its centre about twice the
diameter of rather less of the covered piston rod. This is inserted between the
syphon head and the vase or the head of the tube through which the waters pass up
from the vase to the head. Through this hole in the thick rubber washer the
covered piston rod is passed into the syphon head this washer forming a convenient
seating for the valve plug. The rubber covering of the valve plug and the flange
above can be dispensed with if desired.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :
The improvement in syplion bottles by having the lower part of the piston rod
to the extent above indicated enclosed in an outer casing or tube of glass or
earthenware or other suitable material and having the valve plug of the same
material and in one piece with such casing or tube constructed substantially as
herein before described.
Dated this 28th day of October 1891
CHAS. R. TAYLOR,
63 & 64, New Broad Street, E.C., Agent for the Applicants.