Improvements in Vessels for Containing Sulphur Dioxide.
Year: 1892

page_text: Date of Application, 3rd Nov., 1892
Complete Specification Left, 4th July, 1593-Accepted, 26th Aug., 1893
PROVISIONAL SPECIFICATION.
Improvements in Vessels for Containing Sulphur Dioxide.
We, ARTHUR BOAKE and FREDERICK GEORGE ADAIR ROBERTS, of
Warton Road, Stratford, in the County of Essex, Manufacturing Chemists do
hereby declare the nature of this invention to be as follows:-
The nature of our invention consists in improvements in vessels for the storage
of sulphur dioxide, otherwise known as liquefied anhydrous sulphurous acid.
Heretofore, the only vessels in use for this purpose have been of glass, copper or
welded steel or iron, the first of which is heavy, & fragile, and the others heavy,
cumbrous and expensive in proportion to the value of the contents of sulphur
dioxide when in small quantities, and such vessels further necessitate the use of
expensive metallic valves of special construction.
It is well known that sulphurous acid has a very corrosive action upon tin,
solder etc., but we have discovered that the liquefied gas when practically free from
water has no action upon tin or solder, and we have applied this discovery in the
preparation of vessels made of tin-plate, commonly called tin, joined with solder, by
which we obtain vessels of great lightness and portability at a very cheap rate and
of sufficient strength to resist the pressure exercised by the liquefied gas, or of
vessels made up of copper or brass sheeting jointed with ordinary solder used with
such metals.
We do not claim any particular form of vessel, but we have found that one of
cylindrical shape with a soldered longitudinal seam, and the ends lapped, jointed
and soldered, to be suitable.
We also claim an improved and economical contrivance in lieu of a valve or tap
for filling and emptying the tin-plate vessel, viz., a lead or other soft metal tube
fixed securely with solder in the vessel, preferably in one of the ends, and projecting,
say, inch from the vessel. The vessel is filled through this tube, and the orifice
is then closed by squeezing the tube with a pliers or other suitable means, and the
joint hermetically sealed with solder.
When for the purposes of disinfection or other objects it is desired to release the
contents of the vessel, it is done by the simple operation of severing the lead tube
with a cutting pliers or other suitable instrument, thus doing away with the costly
valve fittings beforementioned.
Dated this 2nd day of November 1892
ARTHUR BOAKE.
FREDK. GEORGE ADAIR ROBERTS.
COMPLETE SPECIFICATION.
Improvements in Vessels for Containing Sulphur Dioxide.
We, ARTHUR BOAKE and FREDERICK GEORGE ADAIR ROBERTS of
Warton Road, Stratford in the County of Essex, Manufacturing Chemists 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 relates to vessels for the storage of sulphur dioxide, otherwise
known as liquefied anhydrous sulphurous acid.
Heretofore, the only vessels in use for this purpose have been of glass which are
heavy and fragile or of copper or welded steel or iron which are heavy, cumbrous
and expensive, as compared with the value of their contents. Such vessels further
[Price Bd.

page_text: necessitate the use of expensive metallic valves of special construction, especially
when the discharge of only portions of the contents of the vessel has to be
provided for.
such action.
Although sulphurous acid is known to have a very corrosive action upon tin,
solder and other metals, the liquefied gas, when practically free from water, has no
We take advantage of this fact by manufacturing and using for
holding the liquefied gas, vessels made of tin plate joined with solder, these vessels
being very light and portable, very cheaply made and of sufficient strength to resist
the internal pressure.
Instead of tin plate, sheet copper or brass joined with ordinary solder can also
be used.
Such vessels may be of various forms, one of cylindrical shape as shewn in the
accompanying drawing with a soldered longitudinal hooked seam S and with ends
lapped, jointed and soldered, is very suitable.
Also, instead of employing a valve or tap for filling and emptying the vessel, we
solder to it a lead or other soft metal tube T, preferably at one of the ends, this
tube projecting half an inch to an inch. The vessel is filled through this tube
which is then closed by squeezing the end of the tube with a pliers or other
Suitable tool. For greater security, the end of the squeezed tube may be sealed
with solder.
When, for disinfecting or other purpose, it is desired to emit vapour or liquid
from the vessel, it is only necessary to cut off the squeezed part of the lead tube
with a cutting pliers or other suitable tool, thus dispensing with any costly valve or
like fitting.
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:
For containing sulphur dioxide, a vessel made of tin plate or such like sheet
metal, solder jointed, and provided with a soft metal pipe for filling and emptying,
substantially as described.
Dated this 4th of T... 1902
ABEL & IMRAY,
Agents for the Applicants.

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