Construction of Chambers or Receptacles for Drying, Evaporating, Heating, or Cooling Substances.
Year: 1898

page_text: Date of Application, 24th Aug,
4000
Complete Specification Left, 23rd May, 1899-Accepted, 22nd July, 1899
Complete Specification Left, 23rd May, 1899-Accepted, 22nd July, 1899
PROVISIONAL SPECIFICATION.
Improved Construction of Chambers or Receptacles for Drying,
Evaporating, Heating, or Cooling Substances.
I, CARL HUBER, of Kriegstrasse 89, Karlsruhe, in the Grand Duchy of Baden,
in the Empire of Germany, Engineer, do hereby declare the nature of this
invention to be as folows:-
My invention relates to that construction of chambers or receptacles in which
flat horizontal coils of pipes have been employed, through which steam, hot air,
or other hot or cold fluid was made to circulate, for heating, drying, cooling, or
otherwise acting upon substances placed above or below such coils upon sliding
or pivotted trays, or otherwise.
According to my invention I replace such pipe coils by the following con-
struction of the chambers.
At the point or points where the coil or coiled passages is or are to be situated, I
divide the casing of the chamber and I provide in each part a closed partition,
such that when the two parts are fitted together, a certain space intervenes
between the two partitions. Assuming these partitions to be horizontal then
on the face of the lower partition I form or fix a spiral rib, extending from one
point of the inner surface of the casing to the centre and of a height corre-
sponding to the distance between the partitions, and on the face of the upper
partition I form a similar spiral rib in such a position that when the two parts
are fitted together, the spiral rib on the upper partition will fit in between the
spiral rib of the lower partition, thus forming between them two separate helical
passages, each extending from a point of the casing where it communicates
with a separate branch pipe to the centre, where the two channels are made to
communicate with each other. Thus on admitting steam or other fluid through
the one branch pipe into the one spiral channel, it will flow through this to the
centre, where it will pass into the second channel, and after flowing through it,
it will escape through the second branch pipe.
The spiral rib of the one partition may either merely fit with its edge more
or less accurately against the surface of the other partition, or, where a very
perfect separation of the two channels is required, the surfaces of the partitions
may be formed with spiral grooves for the reception of the edges of the ribs,
and these grooves may be filled with cement or packing material before fitting
the parts together, so as to insure a tight joint.
In some cases, instead of forming a spiral rib on each partition both ribs
may be formed or fixed on the one partition, while the other partition is only
provided with the spiral grooves for the reception of the edges of the ribs,
According to another modification, only a single spiral passage is formed
between the partitions in the above described manner, the fluid after flowing
from the periphery to the centre, being conducted thence through a radial
channel formed on the other side of the partition, back to the second branch
pipe on the casing.

page_text: When the chamber or casing requires similar channels to be formed at the
top and bottom surfaces thereof these are formed in the same manner as above
described, the one partition being replaced by the cover and bottom plate of the
chamber, on which the one spiral rib is formed.
It will be obvious that any required number of separate chambers may be
mounted one above the other with spiral passages formed between each two in
the above described manner.
In the above described construction the chamber has been assumed to be of
a cylindrical form; when the chamber is of rectangular form, the passages may
be made to extend in a zig zag form from one end to the other, for which
purpose the one partition may have a continuous zig zag rib extending from
one end to the other, while the other partition is formed with straight ribs
projecting alternately from opposite sides of the casing into the spaces between
the zig zag rib, thus forming two zig zag channels that communicate with each
other at one end, and with separate branch pipes at the other end.
Although in the above description I have spoken of the partitions and
channels being horizontal, it is obvious that they may also be arranged verti-
cally in the chamber.
Dated this 24th day of August 1898.
ABEL & IMRAY,
Agents for the Applicant.
Improved Construction of Chambers or Receptacles for Drying,
Evaporating, Heating, or Cooling Substances.
I, CARL HUBER, of Kriegstrasse 89, Karlsruhe, in the Grand Duchy of Baden,
in the Empire of Germany, Engineer, 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:—
My invention relates to that construction of chambers or receptacles in which
flat horizontal coils of pipes have been employed, through which steam, hot air,
or other hot or cold fluid was made to circulate, for heating, drying, cooling, or
otherwise acting up substances placed above or below such coils upon sliding
or pivotted trays, or otherwise.
According to my invention I replace such pipe coils by the following con-
struction of the chambers.
At the point or points where the coil or coiled passages is or are to be situated, I
divide the casing of the chamber and I provide in each part a closed partition,
such that when the two parts are fitted together, a certain space intervenes
between the two partitions. Assuming these partitions to be horizontal then
on the face of the lower partition I form or fix a spiral rib, extending from one
point of the inner surface of the casing to the centre and of a height corre-
sponding to the distance between the partitions, and on the face of the upper
partition I form a similar spiral rib in such a position that when the two parts
are fitted together, the spiral rib on the upper partition will fit in between the
spiral rib of the lower partition, thus forming between them two separate helical
passages, each extending from a point of the casing where it communicates
with a separate branch pipe to the centre, where the two channels are made to
communicate with each other. Thus on admitting steam or other fluid through
the one branch pipe into the one spiral channel, it will flow through this to the
centre, where it will pass into the second channel, and after flowing through it,
it will escape through the second branch pipe.

page_text: The spiral rib of the one partition may either merely fit with its edge more
or less accurately against the surface of the other partition, or, where a very
perfect separation of the two channels is required, the surfaces of the partitions
may be formed with spiral grocves for the reception of the edges of the ribs,
and these grooves may be filled with cement or packing material before fitting
the parts together, so as to insure a tight joint.
Fig. 1 shews a vertical section of a chamber for drying, &c. constructed
according to my above described invention.
Fig. 2 shews a sectional plan on line - Fig. 1; Fig. 3 shews a plan of the
top compartment with the cover plate removed.
The chamber is composed of the two separate compartments A. A¹, and the
top and bottom covers B B¹. Each compartment has formed on its top and
bottom plate CC a helical rib D¹ D, so arranged that when fitted together, the
rib D, fits between the rib D', the plates being provided with a spiral groove E
into which fits the edge of the rib of the other plate, thus forming two closed
spiral passages that communicate with each other at the inner end, while at
the outer end, each passage communicates with a separate branch pipe F F.
Thus assuming that steam or other heating or cooling fluid enters through F
it will flow first along the one spiral passage to the centre and thence back
through the other spiral passage to the periphery where it will escape through
the second branch F.
In some cases, instead of forming a spiral rib on each partition both ribs
may be formed or fixed on the one partition, while the other partition is only
provided with the spiral grooves for the reception of the edges of the ribs,
as indicated at Fig. 4.
According to another modification, only a single spiral passage D Figs. 5
and 6 is formed between the partitions in the above described manner, the fluid
after flowing from the periphery to the centre, being conducted thence through
a radial channel D formed on the underside of the partition C back to the
second branch pipe on the casing.
When the chamber or casing requires similar channels to be formed at the
top and bottom surfaces thereof these are formed in the same manner as above
described, the one partition being replaced by the cover and bottom plate of the
chamber, on which the one spiral rib is formed, as shewn at Figure 1.
It will be obvious that any required number of separate chambers may be
mounted one above the other with spiral passages formed between each two in
the above described manner.
In the above described construction the chamber has been assumed to be of
a cylindrical form; when the chamber is of rectangular form, the passages may
be made to extend in a zig-zag form from one end to the other, for which
purpose the one partition may have a continuous zig-zag rib extending from
one end to the other as shewn at D Fig. 7 while the other partition is formed
with straight ribs D¹ projecting alternately from opposite sides of the casing
into the spaces between the zig-zag rib, thus forming two zig-zag channels that
communicate with each other at one end, and with separate branch pipes at
the other end; or a single zig-zag channel may be formed with a number of
concentric ribs 1 Fig. 8, having openings alternately on opposite sides of the
radial partition D¹ the discharge passage D2 being arranged on the underside
of the partition, as in Figs. 5 and 6.
Although in the above description I have spoken of the partitions and
channels being horizontal, it is obvious that they may also be arranged verti-
cally in the chamber.
Having now particularly described and ascertained the nature of this
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. Chambers for drying, evaporating, heating or cooling substances, having

page_text: spiral channels for the passage of a heating or cooling fluid such channels
being produced by forming the chamber in sections having partitions on which
are spirally formed ribs so arranged that on fitting the sections together the
spiral rib of the one section fits between that of the other so as to produce two
separate spiral channels that communicate with each other at the inner end
and with separate branch pipes at the outer end substantially as described with
reference to Figs. 1, 2 and 3, of the drawings.
2. The modified form of the spiral channels for the passage of heating
or cooling fluid referred to in the first claim, wherein both spiral ribs are formed
on the one partition, substantially as described with reference to Fig. 4.
3. The modified form of the spiral channels referred to in the first claim
wherein only a single spiral rib is formed on the one partition the second one
being replaced by a radial discharge passage on the underside of the partition,
substantially as described with reference to Figures 5 and 6.
4. In chambers with channels for heating or cooling fluid such as are referred
to in the first claim, making the said passages of zig-zag form instead of spiral,
substantially as described with reference to Figures 7 and 8 of the drawings.
Dated this 23rd day of May 1899.
ABEL & IMRAY,
Agents for the Applicant.