İmprovements in Apparatus for Drying Yarn, Wool, Vegetable and other Material.
Year: 1892

page_text: Date of Application, 15th Jan., 1892-Accepted, 12th Mar., 1892
İmprovements in Apparatus for Drying Yarn, Wool, Vegetable
and other Material.
I, JOHN HEWETSON LORIMER, of 1326 Chestnut Street, Philadelphia, State
of Pennsylvania, United States of America, Manufacturer, do hereby solemnly
declare the nature of my invention, and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:-
The object of my invention is to provide suitable apparatus for quickly drying
yarns, wools, and any material of a textile character, and accomplish the result in
a most effectual manner and without excessive handling of the material. While
the invention is particularly adapted for drying textile materials, it is also adapted
for drying materials such as pulp and all vegetable substances.
In carrying out my invention I provide perforated aprons, preferably formed of
slats connected at the sides by chains, and cause them to travel in a predetermined
manner through an enclosed chamber in which air currents, preferably heated, are
caused to circulate, whereby the said air currents are caused to pass through the
material being treated during its conveyance through the enclosed chamber by the
aprons. The said aprons are caused to pass from the outside to the inside of
the chamber so as to carry the material into the said chamber, and thence through
it, and again deliver it to the outside. The operator is thus not required to enter
the chamber during the process of drying. The endless aprons or conveyors are
supported at the sides of the compartment through which they travel by means of
angle irons or wind guards to prevent the free passage of air around the sides of
the aprons and thereby avoid passing through the material carried by the aprons.
By my improved construction all of the air is caused to pass directly through the
material to be treated, and the greatest advantage is thus taken of the drying
medium. It is evident that in place of air, gases of any suitable composition may be
caused to circulate within the chamber, though ordinarily air in a heated condition
is the medium employed.
Referring to the drawings
Fig. 1 is a longitudinal sectional elevation of a drying apparatus of small size
embodying my invention, the section being taken on line of Fig. 2 ;
Fig. 2 is a cross section of same;
Fig. 3 is an enlarged cross sectional view on line yy of Fig. 1 showing the
construction of the wind guards, and
Fig. 4 is a longitudinal sectional elevation similar to Fig. 1 but of a larger
apparatus.
A is the enclosed chamber and is divided into two compartments B and C by a
vertical partition D. The compartments B and C are open at the top above the
division partition D. In the compartment B the endless aprons are caused to
travel, while in the compartment C the heating apparatus I is placed. This heating
apparatus is preferably formed of radiators or steam pipes. E and F are two
endless aprons adapted to travel in juxtaposition over a portion of their length
within the chamber A.
Referring to Figs. 1 and 2 the apron E extends between the two guide rollersee,
one of which is within the chamber A. and the other of which is outside thereof.
The roller H is arranged at the outlet of the chamber where the material is carried
out upon the apron E, to insure the passage of the material out of the chamber
and to prevent it catching at the opening. The apron F is arranged about the
rollers G and f and embraces the lower part of the apron E and a portion of the
upper part thereof. The material is fed at h between the two aprons and is
carried in the direction of the arrows between the two aprons and remains between
TD 17
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page_text: It is delivered
them until it passes from under the roller within the chamber A.
below the roller H which is arranged at the outlet of the chamber. It is evident
that the two right hand guide rollers might be arranged within the chamber A
if so desired. By this construction the machine may be fed and the dried material
delivered at the same end of the machine, and thereby the operation of the machine
may be controlled by a single operator. The aprons E and F are preferably
formed of slats connected to chains at each side, which latter rest upon angle
irons L forming wind guards as clearly shown in the several figures, and
particularly Fig. 3. In this manner all of the air is caused to pass through the
slatted or open part of the aprons or that portion thereof supporting the material
to be dried.
K are fans or exhausters which are arranged between the lower parts of the
compartments B and C and cause the circulation of the air as indicated by the
arrows in Fig. 2. By this means the air is caused to circulate through and through
the material to be dried as well as the heating apparatus I.
If desired a valve J
may be employed to let in fresh air or allow the escape of moist air as desired.
It is evident that the circulation of the air may be in the reverse direction if so
desired.
If desired the direction of travel of the aprons may be reversed and the material
may be fed under the roller H and delivered at h.
Referring to Fig. 4 we have the same general construction as above described
but in a machine having greater capacity. In this drying apparatus the material
to be dried is fed into the machine at one end at h, and is delivered at the opposite
end under the roller H, requiring two operators. In addition to this, the aprons F
and E are caused to travel in juxtaposition to a greater extent within the chamber
than in the former case, and require additional guide rollers as indicated.
Otherwise, the apparatus is the same.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. In a drying apparatus, a closed compartment, two endless aprons travelling
through the said closed compartment in juxtaposition, wind guards arranged
between the edges of the aprons and the walls of the chamber or compartment, and
a fan or exhauster for circulating the air or drying medium within the chamber to
cause it to pass through the aprons.
2nd. In a drying apparatus, a closed compartment, two endless aprons travelling
through the said closed compartment in juxtaposition, wind guards arranged
between the edges of the aprons and the walls of the chamber or compartment, a
fan or exhauster for circulating the air or drying medium within the chamber to
cause it to pass through the aprons, and a heating apparatus contained within the
chamber through which the air or drying medium is caused to circulate, the air or
drying medium passing alternately through the aprons and the heater.
3rd. In a drying apparatus, an enclosed chamber, an endless apron E one end of
which extends to the outside of the chamber and the other end of which remains
within the chamber and is guided by suitable guide rollers, and a second apron
adapted to run in juxtaposition for a portion of its length with a portion of the
first mentioned endless apron and also extending from without the chamber to
within the same, and fans or exhausters to circulate a drying medium through the
said aprons while travelling within the enclosed compartment.
Dated this 26th day of December 1891.
JOHN HEWETSON LORIMER.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.