Improvements in or relating to Dry Houses for Lumber and other Materials.
Year: 1897

page_text: Date of Application, 20th Aug., 1897
Complete Specification Left, 29th Apr., 1898-Accepted, 4th June, 1898
PROVISIONAL SPECIFICATION.
Improvements in or relating to Dry Houses for Lumber and
other Materials.
I, CARL JOHAN BERGSTRÖM, of Finshyttan, in the Kingdom of Sweden, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to some improvements in such dry-houses as consist of
several drying-rooms that can be put in communication with one another as well as
with a room containing a heating apparatus the heating-room, whence the air is
conducted into the drying rooms, and a room containing a condenser arrangement,
into which room the moist air from the drying rooms is introduced and from which
said air, after the moisture contained in it has been condensed and removed is intro-
duced into the heating room to be subsequently returned to and conducted through
the drying rooms. The air is conducted from the top downwards through each drying
room and, if desired from one room to an adjacent one. In such dry-houses the
drying rooms are arranged in a circle around a central room and the corners at the
periphery of the rooms being unsuited for the piling of lumber are cut off by means
of walls so as to form triangular chambers between the drying rooms which chambers
serve as passages of communication between adjacent drying rooms. A disadvantage
of this arrangement is that the air in its course through the passages mentioned,
which become excessively large, loses much of its heat and that, as a result, the
efficiency of the dry house is reduced. For conducting the air from the drying rooms
to the condenser room, which adjoins the heating room, the latter is surrounded by
or there is arranged underneath it, a passage connecting with the condenser room and
communicating with the drying rooms by means of apertures that can be closed up.
The object of the present invention is to increase the efficiency of the dryhouse above
referred to and to simplify its construction.
The drying rooms according to this invention, are arranged on each side of an
oblong central hot room and can be placed in communication with the latter by
means of upper adjustable openings. The condenser room lies underneath the central
hot room, and consequently the drying rooms can be put in direct communication
with it (the condenser room) without the aid of passages by means of adjustable lower
apertures in the wall between the drying rooms and the condenser room. The.
apparatus for heating the air is located at one end of the hot room (or hot air passage).
The air of the condenser room is, as usual driven through the heating apparatus by
means of a fan. In order to allow of conducting the air from one drying room, I for
instance, to the adjacent room II an adjustable opening is made, as usual at the
lower part of the partition between said rooms. In order to conduct the air to the
upper portion of the room II, all that is required, according to this invention, is to
arrange in the latter room, near the partition mentioned, a screen or wall which does
not reach up to the ceiling of said room.
Such a screen or wall is located at each
partition between two adjacent drying rooms.
For the conduction of the air from
one of the rooms at the ends of the central room to the other passages are provided.
The passages between the partitions and the screens may be made very narrow, so
that their bounding wall at the outside of the dryhouse will be very small the result
of which is that the radiation of heat through said wall will be very small.
The air,

page_text: therefore, in flowing from one room to an adjacent one will retain nearly all its heat
and the efficiency of the dry house is hereby materially increased. The lumber is
introduced into the drying rooms through side doors for instance, and is placed on
horses.
The drying or seasoning operation is carried on in the same manner as in the older
dry-houses. The air may either be conducted directly from the hot room into each
of the drying rooms and then out to the condenser room, or it may be led into one
of the drying rooms, then through one or more of the adjacent rooms and finally to
the condenser-room. The condensation may be accomplished by means of water
issuing from sprinkler-pipe or by means of a surface condenser. In order to prevent
the air from passing from the drying rooms, adjoining the heating apparatus directly
to a fan a screen, of corrugated iron plate or the like is provided, which causes the air
to flow under the sprinkler pipes.
By locating the condenser room underneath the hot room it is possible to lead the
air directly from the drying rooms to the condenser room without the aid of inter-
posed passages, as used in the dry-houses of this kind previously employed. By
arranging the hot and condenser rooms as described above and by grouping the drying
rooms on each side of them, the dry house is materially simplified, and consequently
it will be cheaper to construct than those heretofore used. The latter arrangement
also allows of adding more rooms to the dry-house when desired by building
on an addition or of reducing the number of drying rooms of a dry house,
when necessary this not being possible in dryhouses having their drying room
arranged in a circle.
Dated this 20th day of August 1897
BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to Dry Houses for Lumber and
other. Materials.
I, CARL JOHAN BERGSTRÖM, of Finshyttan, in the Kingdom of Sweden, 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:-
This invention relates to improvements in such dry-houses as consist of several
drying-rooms that can be put in communication with one another as well as with a
room containing a heating-apparatus, the heating-room, whence the air is conducted
into the drying rooms, and a room containing a condenser-arrangement, into which
room the moist air from the drying-rooms is introduced and from which said air,
after the moisture contained in it has been condensed and removed, is introduced into
the heating-room to be subsequently returned to and conducted through the drying-
rooms. The air is conducted from the top downwards through each drying-room
and, if desired, from one room to an adjacent one. In such dry-houses the
drying-rooms are arranged in a circle around a central room, and the corners at
the periphery of the rooms being unsuited for the piling of lumber are cut off by
means of walls so as to form triangular chambers between the drying-rooms, which
chambers serve as passages of communication between adjacent drying-rooms. A
disadvantage of this arrangement is that the air in its course through the passages
mentioned, which become excessively large, looses much of its heat and that, as a
result, the efficiency of the dry-house is reduced. For conducting air from the
drying-rooms to the condenser-room, which adjoins the beating-room, the latter is

page_text: urrounded by, or there is arranged underneath it, a passage connecting with the
condenser-room and communicating with the drying-rooms by means of apertures
hat can be closed up. The object of the present invention is to increase the
efficiency of the dry-house above referred to and to simplify its construction.
Fig. 1 represents a longitudinal vertical section of a dry-house arranged in
accordance with this invention.
Figs. 2 and 3 show respectively a horizontal and a transverse section of the
dry-house.
The drying-rooms 1, 2, 3 etc. according to this invention are arranged on each side
of an oblong central hot room B and can be placed in communication with the latter
by means of adjustable openings d. The condenser room A lies underneath the
central room, and consequently the drying-rooms 1, 2, 3 etc. can be put in direct
communication with 'it (the condenser-room), without the aid of passages, by means
of adjustable apertures e in the wall between the drying-rooms and the condenser-room.
The apparatus C for heating the air is located at one end of the room B (or hot air
passage). The air of the condenser-room is, as usual, driven through the heating-
apparatus by means of a fan c. In order to allow the air to be conducted from one
drying-room 1 for instance, to the adjacent room 2, an adjustable opening f is made,
In order to conduct
as usual, at the lower part of the partition between said rooms.
the air to the upper portion of the room 2, all that is required, according to this
invention, is to arrange in the latter room near the partition mentioned, a screen or
Such a screen
wall g, which does not reach up to the ceiling of said room.
For
or wall g is located at each partition between two adjacent drying rooms.
conducting the air from one of the rooms at the end of the central room to the other,
passages K5 K10 are provided. The passages K-K and K-K9 between the
partitions and the screens g may be made very narrow, so that their bounding wall at
the outside of the dry-house will be very small the result of which is that the
radiation of heat through said wall will be very small. The air, therefore, in flowing
from one room to an adjacent one will retain nearly all its heat, and the efficiency of
the dry-house is thereby materially increased. The lumber is introduced into the
drying rooms through side doors h, for instance, and is placed on horses.
The drying or seasoning operation is carried on in the same manner as in the older
dry-houses. The air may either be conducted directly from the room B into each of
the drying-rooms and then out to the condenser-room A, or it may be led into one
of the drying-rooms, then through one or more of the adjacent rooms and finally to
the condenser-room. The condensation may be accomplished by means of water
In order to prevent
issuing from sprinkler pipes or by means of a surface condenser.
the air from passing from the drying-rooms, adjoining the heating-apparatus C, directly
to the fan c, a screen ȧ of corrugated iron plate or the like is provided, which causes
the air to flow under the sprinkler-pipes.
By locating the condenser-room underneath the hot room B it is possible to lead
the air directly from the drying rooms to the condenser room without the aid of
interposed passages, as used in the dry-houses of this kind previously employed. By
arranging the rooms A and B as described above and by grouping the drying-rooms
on each side of them, the dry-house is materially simplified, and consequently it will
be cheaper to construct than those heretofore used. The latter arrangement also
allows of adding more rooms to the dry-house, when desired by building on an
addition, or of reducing the number of drying-rooms of a dry-house, when necessary,
this not being possible in dry-houses having their drying rooms arranged in a
circle.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
1. In dry-houses for lumber and other material, consisting of one or more drying
LL
or nessage which serves for sunnlving

page_text: communication with the said room as well as with one another and with a room for
effecting the condensation of the moisture contained in the air coming from the
drying room, the arrangement that the condenser-room is located at the side of the
drying-rooms and that the wall between the drying-rooms and the condenser room is
provided with apertures which can be closed, in order that the drying rooms may be
put in direct communication with the condenser-room.
2. In dry-houses arranged as specified in Claim 1 such an arrangement of the
communicating passages between the drying-rooms that the passages will be bounded
for the greater part by the walls of said rooms, for the purpose of retaining all, or
nearly all, the heat in the air flowing from one room to an adjacent one.
3. The construction of dry houses for lumber and other material substantially as
described or illustrated in the accompanying drawings.
Dated this 29th day of Anril 1898.
BOULT & WADE,
Agents for the Applicant.