Year: 1887

page_text: Date of Application, 16th May, 1887
Complete Left, 20th Aug:, 1887
Complete Accepted, 25th Oct., 1887
We THOMAS DIXON Junior and JAMES DYKES both of 25, Mosley Street,
Newcastle on Tyne do hereby declare the nature of this invention to be as follows :-
This invention relates to stoppers for use when the tube of a steam boiler gives
way so as to enable the boiler to be continued in use without the necessity for
inserting a new tube or drawing the fires.
Two conical plugs are employed connected by a rod screwed at both ends which
passes through the tube and may be screwed into one of the plugs and pass through
the other and the whole tightened with a nut screwed onto the rod. The rod can
however pass through both plugs and have a head at one end or nuts at both ends;
one or both ends may be flattened or squared if desired to hold the rod by while the
nut is being tightened up.
At one or both ends a short piece of tube of softer material such as lead copper
asbestos or other material may be placed between the plug and the tube to be stopped
a wrought iron or other collar being provided upon the rod if necessary to support
the inner end.
When desired a small tube may be placed upon the rod equal to the length
between the collars for the purpose of keeping then in place.
The conical plugs may also be made of comparatively soft material either in
addition to the soft tube or if used without it, but otherwise they may be made of
cast iron.
W. P. THOMPSON & BOULT,
Agents.

page_text: We, THOMAS DIXON junior, Ship Owner and JAMES DYKES both of 25 Mosley
Street, Newcastle-on-Tyne, 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 relates to stoppers for use when the tube of a steam boiler gives
way so as to enable the uso of the boiler to be continued without necessitating the
insertion of a new tube or the withdrawal of the fires.
The stopper consists of two conical plugs connected by a rod screwed at both ends
which rod passes through the tube and may be screwed into or otherwise secured to
one of the plugs and pass through the other and the whole tightened by a nut screwed
onto the rod. The rod can however pass through both plugs and have a head at one
end or nuts at both ends, one or both ends may be flattened or squared if desired to
hold the rod by while the nut is being tightened up.
At one or both ends a short piece of tube of softer material such as lead, copper,
asbestos or other material may be placed between the plug and the tube to be stopped
a wrought iron or other collar being provided upon the rod if necessary to support
the inner end. When desired a small tube may be placed over the rod equal in
length to the space between the collars for the purpose of keeping the latter in place.
The accompanying drawing represents a section of the ends of a boiler tube with
our apparatus applied. A is the boiler tube and B are the tube plates in which it is
fixed. C and Care conical metal plugs the former of which is shown as fixed by
screwing or otherwise to one end of the rod D. The other end of the rod is threaded
and the plug C¹ passed over it and when placed in position in the tube the necessary
pressure for drawing the plugs together may be applied by means of a nut E. To
prevent the rod from turning round during the process of tightening the nut it
may be squared or flattened at the end shown at D for the application of a key or
spanner.
In combination with the conical plug a short tube F of softer material such as
lead, copper asbestos or other substance may be placed in the end of the tube A.
This short tube will by reason of its compressibility more readily adapt itself to any
inequalities in the tube and so secure the necessary_tightness of fit with less pressure
than if two hard metal surfaces were in contact. To prevent the tube F from being
forced into the tube it is supported inwardly by means of a collar F1 which in its
turn is supported by a tube F which fits over the rod D and abuts against a similar
collar or against the plug at the opposite end of the tube.
If used without the tubes F the conical plugs may be composed of or peripherally
covered with comparatively soft material so as to fit readily to the end of the boiler
tube but if the tubes F are used they may be of cast iron.

page_text: Having now particularly described and ascertained the nature of our invention and
in what manner the same is to be performed we declare that what we claim is :—
1. In a tube stopper the combination with a rod such as D of two conical plugs
such as C and C¹ composed of having a peripheral covering of soft metal or material
and capable of being forced or drawn into the ends of a boiler tube by a nut or other
means substantially as described.
2. In a tube stopper the combination with a conical plug such as C of a tube such
as F of soft metal or material placed between the plug and the boiler tube and
retained in position by means of a collar F¹ substantially as described.
3. In a tube stopper in which a short tube of soft material is placed between the
conical plug and the boiler tube the combination with the said soft tube of a tube F'
passing over the rod D and abutting against a similar collar or against the conical
plug at the other end of the tube substantially as described and illustrated in the
accompanying drawings.
L 1
1000