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Патент USA US2117500

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May 17, 1938.
_
METHOD OF
N. E. RAMBUsH ET AL
2,117,500
KING JACKETED VESSELS, PARTICULARLY
AM-JACKETED BOILING -PANS
Filed April 1, 1935
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Patented May 17, 1938
2,117,500
UNITED STATES PATENT OFFICE
2,117,500
METHOD 0F MAKING JACKETED VESSELS,
PARTICULARLY STEAM-JACKETED BOIL
ING PAN S
Niels Edward Rambush and Philip Arthur An
drews, Stockton-on'Tees, England
Application April 1, 1935, Serial No. 14,174
In Great Britain June 6, 1934
4 Claims.
The present invention relates to improvements
in jacketed vessels, and is particularly adapted
to vessels having a steam jacket liable to external
pressure on the inner shell, such for instance as
5 steam-jacketed boiling pans.
Vessels of this type have usually been stayed
by stays riveted or bolted to the internal and
external shells, which has involved perforation
of the inner shell. Difficulty has been experienced
10 in obtaining iluid tightness with such stays un
less the plates have been made 'considerably
thicker than otherwise necessary.
According to the present invention the internal
and external Walls of a doubled Wall vessel are
1 Cl stayed together by meansl of tubular stub stays
Welded to the surface of one of said walls which
enables the stay to» be positioned and welded to
the inner Wall after the outer shell and inner
20
shell have been assembled and positioned.
These tubular stub stays may be of any desired
section. 'I'hey are however, preferably of such
size that they can be Welded first to the outer Wall
and then to the inner Wall if that be desired, or
vice Versa.
25
~»
The invention is more particularly described
with reference to the accompanying drawing in
Which:
Figure 1 is aside elevation of part of a steam
jacketed vessel.
30
Figure 2 is a detail.
Figures 3 and 4 show the invention applied to
modified forms of construction.
The internal Wall l of a vessel which may be
Welded or otherwise secured to the base 2 and
35 cover 3 has a steam jacket formed by an external
shell ¿i having holes or perforations Within it-at
suitably spaced points to receive hollow stays 5,
usually of circular cross-section, which are welded
as at S to the internal shell l, and may be riveted
40 or otherwise secured to the external shell 4, but
are preferably Welded thereto as shown at 1. By
this means it will be seen that a very strong struc
ture is obtained giving high resistance in the
shell against collapse due to the steam pressure
4Gl in the space between inner and outer shells, Whilst
the staying avoids leakage from the steam space
to the inner vessel, Whereas any leakage from the
outer shell is immediately visible. Moreover, as
yIt is obvious that the improvements of the
present invention are applicable to any doubled
wall vessel irrespective of its type or the form of
its base and covers or end surfaces. By Way of
example Figure 3 shows the application to a
jacketed vessel having a domed end and Figure 4
to a vessel having a flat end and double Walled
throughout.
We declare that what We claim isz--~
1. The method of securing a jacket to a vessel
having an imperforate Wall which consists in
mounting outside of said imperforate wall a shell
having perforations therein, thereafter disposing
tubular studs in said perforations in contact with
the exterior of said imperforate Wall, and welding
said tubular studs to said imperforate Wall
through the interiors of said tubularstuds and
securing said tubular studs to said shell.
2. The method of mounting a jacketing shell
upon a vessel having an imperforate Wall Which
consists in mounting said jacketing shell outside
of said vessel, disposing tubular studs in perfora
tions in said jacketing shell and in contact With
said imperforate Wall after said shell has been
positioned relative to said Wall, Welding said tubu
lar studs to said imperforate Wall through the
interiors of said tubular studs and securing said
studs to said jacketing shell.
3. 'I‘he method of mounting a jacketing shell
upon a vessel having an imperforate Wall which
consists in mounting said jacketing shell outside
of said Vessel, disposing tubular studs in perfora
tions in said jacketing shell and in contact with
said imperforate wall after said shell has been
positioned relative to said Wall, welding said tubu 35
lar studs to said imperforate wall by depositing
Welding material interiorly of said studs and se
curing said studs to said jacketing shell.
4. An assembly for a jacketed vessel comprising
a, receptacle having an imperforate liquid retain 40
ing Wall and a shell in jacketing relationship
with said imperforate Wall, said shell having per
forations therein and tubular studs disposed in
said perforations and adapted to be Welded to
the exterior of said imperforate Wall by means
of Welding material disposed interiorly of said
studs, said studs being adapted to be secured to
said jacketing shell.
there is no drilling or punching of the internal
5O shell, the difiiculty is avoided of exact register of
such holes in the outer and inner shells to re
ceive the strengthening stays.
NIELS EDWARD RAMBUSH.
PHILIP ARTHUR ANDREWS.
50
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