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Патент USA US2124669

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July 26, 1938.
T. FUYKl-:Rs _
2,124,669
DRYING DEVICE FOR TRAVELING WEBS
Filed May 23, 1934
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Patented July- 26, 19.38-
v
y UNITED VSTATES PAraNTfoFFicE
2,124,669 l
DRYING DEVICE FOR TRAVELING WEBS
Theodor ,Fuykem Dusseldorf,'Germany
'Application May 23, 1934, Serial No. '127,197
Germany May 24, 1933
1o claim. (c1 34-48)
-'I‘he invention relates to a device for drying
traveling webs of all kinds, during their manufacture or treatment, for example printed paper
one plane, by constructing the spindles of diifer"ent diameters, for example, the middle guide
spindle having the largest diameter, and the
or webs of other material, by means of a medium diameter of the spindles progressively diminish
in the form of gas or vapour, fory example air. ' ing towards each end of the series of spindles.
'I‘he object of the invention is to provide as comThe form of the drying devices disposed on
pact a construction as possible for such drying either side of the web guide may be as desired.
devices which, with the minimum requirements
of space, render possible a particularly advanl0 ,tageous utilization of the drying effect -of the
It is possible to employ for example drying de
vices according to the co-pending application,
Serial No. 523,578, ñled on the 18th March, 1931, l0
drying medium. For this purpose, according to
the invention, a web guide is provided which
guides the traveling web for a certain length
thereof in one direction, defleets it and returns it
15 in at least substantially the opposite direction,
now Patent No. 2,022,593 in which a plurality of
blowing and suction nozzles aî'e\arranged alter
nateiy transversely to the direction of travel of
the web.. It has been found to be particularly
advantageous to dispose parallel to each of the 15
and at two external sides of which are mounted
two web guide lengths a conducting wall for the
the drying devices acting over the two lengths drying medium, _for example air, to be passed
of web guide. The web guide co’mprises or is~ between the said wall and the traveling web.
constituted by a series of parallel, adjacently dis- 'I'he said guide walls may be adjustably mounted
20 posed guide spindles. The web is then first led so that their distance from the adjacent surface 20
along one side of the series of spindles, is de- of the traveling web may be varied in order to
flected round the last spindle and is returned secure the best drying effect. Itis advisable to
along the other side of the series of spindles. make the' distance 0f the guide Walls from the
The new arrangement according to the invention traveling web above each guide spindle less than
25 thus renders it possible to utilize a web guide, that between the guide SpindleS- The flowing 25
> such -as has been necessary heretofore for any ~dl`yin8 medium iS thereby bamed at these Places,
drying device, on both sides for association with and hence an increase in pressure is obtained,
two drying devices, so that the individual drying which is particularly advantageous in preventing devices do not require a separate rear wall and contact of the traveling web with the guide walls.
30 separate guiding spindles. .
‘
'I'he new arrangement requires much less space
and material as compared with apparatus using
large drying cylinders, and is therefore much
more economical and convenient.
35
The web guide (roller band, guide spindles or
the like) may be set into motion either by the
traveling web itself or it mayv be driven sepa-
rately. If individual guide spindles are employed,
a sprocket wheel may be mounted for example on
40 each -spindle shaft, and the said sprocket wheels
may be driven by a common chain drive.
In order, when the web guide is constituted by
guide spindles, to prevent sagging of the traveling
web between the said spindles, the gaps between
45 the spindles may be bridged by guide walls, above
the surface of which the spindles project but
slightly. The said guide Walls may be adjustably
mounted, so that their distance from the upper
edge of the guide spindles may be varied. If the
50 axes of the guide spindles all lie in one plane and
if the spindles all have the same diameter, two
plane web guide lengths are obtained. 1f it is
desired to guide the web in an arcuate manner,
this may be readily accomplished, even in the
55 case of the arrangementA of the spindle-axes in
'I‘he diminution in distance at the said points 30
may be Obtained by prûviding the guide vwalls with
a transverse rib, elevation or the like directed
towards the corresponding spindle.
,f
The drying medium flowing through the space
between the guide walls and the traveling web 35
may be injected at one end lof the guide Walls
into the said space and may be led olf freely or
aspirated at the Other end- It 1S also DOSSìble t0n
force the drying medium through the drying
length merely under the iniluence of suction. It '40
has been found to be a particularly advantageous
arrangement t0 provide, Opposite the defiecting
point of the traveling web, a drying air supply
container, from which the air flows into the dry
ing devices situated on either side of the web 45
guide. The said Container may be of any .desired
construction. If guide walls parallel to the web
are employed, the drying medium flowing from the
said container and passing between the web and
the guide walls may be led off, for example by 50
aspiration at the ends of the guide lengths, that
is to say,r at the points at which the web enters
and leaves the drying device.
A particularly
compact arrangement is provided when the dry
ing air is deflected at these points to the rear side 55
2
8,124,009
of the guide walls and is led along the latter into
a suction air collecting container, which may be
constructed conjointly with the drying air supply
container. It has been found to be advantageous
Forms of construction of the invention are
shown by way of example in the drawing, in
whichr-
_
»»
.
-
'
to form the drying air supply container of a
Figure 1 is a side-view of a printing machine
with two drying devices connected to a common Ul
longitudinally slotted, preferably conical'tubular
blowing and suction container:
member closed on one side, the two guide walls
adjoining the edges of the slit in the said tubular
member, so that the drying medium flows out of
10 the longitudinal slit between the two guide walls,
and to construct the suction air collecting con
’
Figure 2 a `partial longitudinal section alongline E-F of Figure l;
,
Figure 3 a transverse section along line A-B of
10
Figure 1;
Figure 4 a section along line C-D of Figure l;
Figure 5 a detail view, partly in section, show
tainer in the form of a concentric tubular mem
ber, the edge of which hasv a longitudinal aper
ing one of the baule surfaces arranged near the t
ture of a sufficient sise to allow of the passage
inlet end of the machine.
15 of the guide walls and of the admission of the
suction air, the external walls of the suction air
channels being connected to the edges of the said
aperture.
A
'
In the first form of construction, the web guide 15
consists of ten spindles I to ID, the shafts of which
lie parallel and adjacent to one another in one
plane, and are journalled in two stationary side .
_
Advantageously, it is also possible to bring the walls II and I2 of the drying device. The shafts
end edges of the guide walls close to the surface are extended outwardly on one side to project be- 20
of the traveling web, and then to bend them over yond the wall I2 and carry sprocket wheels I3,
rearwardly in the direction of the suction air cur
which are driven by a chain Il' as indicated in
rent. Since the deñecting points of the drying Figure 2. The middle spindles I and 6 have the
medium are situated in the vicinity of the inlet largest diameter, and the diameter of the spindlesand outlet of the web- in the drying apparatus, diminishes progressively towards each end of the 25
special measures are preferably taken to prevent drying lengths. Mounted between the guide
the escape of drying medium through the inlet spindles are guide walls I5 and I6 as shown in
and outlet slits. For this purpose, the walls Figures 1, 3 and 4, secured by angle pieces Il and
which effect the deflection of the drying medium
I8 (Figure-3) to the side walls II and I2. The
30 may be extended so far towards the central plane
attachment by means of screws enables the ver- 30
of the drying device that the inlet and outlet slit - tical position ofthe guide walls with respectv to.V
of the web does not lie in the direction of flow of the upper edges -of the corresponding guidethe current of drying medium. Furthermore. .spindle to be selected according to requirements.
special baille surfaces for the drying air to be 'I'he traveling web I9 first passes onto the spindle
35 deflected may be provided at the ends of the
I, and thence over all the spindles as far as
guide lengths. Preferably, these surfaces also
may be extended towards the centre of the drying
'device so far that the deflected current of drying
air does not strike their end edges. 'I'he passage
of drying air through the gaps between the baille
surfaces and the traveling web cannot of course
be prevented completely. . ' A portion of the dry
ing medium will therefore be deilected already
by the baille surfaces, while a further portion“
only deflected by the external walls, will flow on
the rear of the baille surfaces and into the suction
channel. This phenomenon, _however, may be
utilized for regulating the suction, the baille sur
faces being extended inthe direction of the suc
tion air current and carrying adjusting means,
so that thereby the cross-sections of flow may be
adjusted. It is thus possible to arrange for the
main portion of the suction to be effective on the
spindle I0, is deñected round the latter and passes
back again along the other side of the guide
spindles to the spindle l, whereupon it can b_e
given any desired direction bymeans of the guide
roller 20.
The direction in which the web runs 40
onto and on the spindles is so selected that the
initial and final lpoints of contact of ~the web
with the guide spindle I Vare not disposed dia
metrically, but nearer to the central plane of the
drying device.
'
Opposite the last guide spindle Iii is mounted
the joint drying air supply and suction air col
lecting container. It comprises the conical tubu
lar member 2|, into which the vdrying air enters
in the direction of the arrows 22.
On the side 50
facing the spindle I 0 the tubular member has a
longitudinal slit 23, from which the drying air
flows in the direction of the arrows 2l towards the
spindle III and, from the latter, away on either
course, a plurality ofthe latter may be provided., side of the web guide in two streams along the
Another form of construction of the drying traveling web. At the same time, the air is main
device is obtained if the two guide walls at the tained in contact with the surface of the web by
detlecting point of the web are allowed to merge " two guide walls 25 and 26, which adjoin the edges
into one another, and the drying medium is in
of the slit 23. The two guide walls are respec
troduced at the inlet or outlet of the web and tively provided above each guide spindle with a 60
front orA on the rear of the bame surfaces.
is led away at the outlet or inlet.
Of
The- more pref
erable construction will be to- allow the drying
medium to ñow ina direction contrary to that
of the web travel. Finally, it is possible to intro
duce -the drying medium both at the inlet and
at the outlet of the web, to deflect both drying
medium currents outwardly 'at the deiiecting
point of the web, to return them back to the points
of introduction and from thence to lead them
70
away.
,
.
»
All of the constructional forms of the present
device are preferably such that the parts cover
ing the web can be removed or at least hingedly
opened on one side for convenience in drawing
75 in the web and for inspection purposes.
transversely-extending elevation 21, 28. At the
bottom ends. they are likewise first bent towards
the paper web and then back into the suction
direction, as shown at 28 and 30. Extending
parallel to the guide walls 25 and 26 are the two
external walls 3i and 32 of the device, which con
stitute with the guide walls the suction channels
in which the drying medium, deflected round the
ends 29 and Ill of the guide walls, returns to the
starting point. 'I'he external walls are connect 70
ed to the semi-circular tubular member 33, which
forms the suction air collecting container and
from which the air is aspirated in the direction
of the arrows 34. 'I'he external walls 3i and I2
are bent inwardly at one of their endsrnameiy, 76
9,124,669
35 and 36 respectively, which ends extend close
medium traveling webs printed on one side there- `
to the surface of the traveling web at its points _ of, said device comprising a casing, guide-walls
of contact with the guide spindle I. The drying
medium flowing against the wall-ends 35, 33 is`
deflected by them into the suction direction.
This deflection is also effected by the two baille
surfaces 31 and 33 which are also provided. Fig
ure 5 shows how both the end of the external
wall 36 and that of the corresponding baile sur
10 'face 38 may be shifted from the highest point
of the guide spindle I towards the central plane
of the web 'guide such a distaance that the dry- '
ing air current flowing inthe direction of the'ar
row 33 does not reach the gap between the baille
15 and the web. Nevertheless, of course, all the air
will not be deñected in the directionof the ar
row 40 by the baille surface 33, but a portion will
flow under the edge thereof and back in the di
rection of the arrow 4|. 'I'he angle members 42,
20 43, 44, 45 (Figure 3) serve as supports for the
guide walls 25 and 26, the external walls 3| and
32 and the baille surfaces 31 and 38. The said
members lie loosely on the walls || and I2, with
theinterposition of packings. The lower por
25 tions 35 and 36 -of the outer walls 3| and 32 are
fixed and form the bearings for the hinges 43
and 4l, about which the parts of the drying de
vices described can be swung open.
At the ends
43 and 49, the guide walls 25 and 26 are applied
30 with packings against the drying air supply pipe
2|. The collecting pipe 33 is hinged as at 50 to
the external wall 32 and may be swung there
about, while the pipe 2| is fixed. The guide walls
25 and 26 are secured to lateral angle members
35 5| and 52, which can be screwed fast to the angle
members 42 to 45 by means of screws 53, 54.
The screws 55, 56 which'pass through the ex
ternal walls 3| and 32 at the edges of the device
serve for fine adjustment. The ends 31' and 38'
40 of the two baille surfaces 31 and 38, which are ex
tended rearwardly in the suction direction, may
likewise be adjusted by means of screws 51 (Fig
ures 1 and 4). It is thereby possible to vary the
width of the passage between the ends 29 and 30
of the guide` walls and the baille surfaces, and
also between the external walls and the baiiie sur
faces and thus to regulate the suction.
I claim:
1. A device for drying by means of a gaseous
medium traveling webs printed on one side there
in said casing, said guide-walls forming a rela
tively long and narrow channel embracing said
web, guide-means for feeding said web into and
out of said ycasing through said channel, a con
tainer arranged midway with respect to ysaid
channel for supplying said medium to the -print
ed side of said web when passingsaid container,
and suction means for withdrawing said medium
vat the ends of said channel.
4. A device for drying by means of a gaseous
medium traveling webs -printed on one side there
of, said device comprising a casing, guide-walls
in said casing, said walls forming a channel pass
ing from one end of said casing round a re
versing point back to the other end of said cas-~
ing and closely embracing the web, a web-guide
for feeding said. w'eb through said channel 'from
the one to the other end thereof, a container
arranged midway with respect to said channel
for supplying said medium under pressure to
the printed side of said web when being fed
through said channel by said web-guide, and
suction means provided at one end of said cas
ing and near both ends of said channel for With
25
drawing said medium from the latter.
5. A device for drying by means of a gaseous
medium traveling webs printed on one side there
of, said device comprising a casing, guide-walls 30
in said casing, said walls forming a channel pass
ing from one end of said casing round a revers
ing point back to the other end of said casing
and closely embracing said web, a web-guide for
feeding said web through said channel from the 35
one to the other end thereof, means for supply
ing said medium to the printed side of said web
at the reversing point of said channel, and suc
tion means arranged at'the ends of said channel
for withdrawing said medium after passage 40
through said channel.
6. A device for drying by means of a gaseous
medium traveling webs printed on one side there
of, said device comprising a web-guide adapted
to feed a web in forward and backward direction
through said device, guide-walls forming a nar
row channel closely embracing said web when
being fed through said device, means for supply
of, said device comprising a casing, guide-walls
ing said gaseous medium to said channel at one
end thereof to move alongside the printed side 50
of said web, and suction means at the other end
in said casing, said walls forming a narrow chan
nel along the printed side of said web, a web
medium therefrom.
guide for feeding said web through said chan
nel, means for blowing said gaseous drying me
dium into said channel at one end thereof along
said printed side of said web, and suction means
for withdrawing said medium at the other end
of said channel.
s
2. A device for drying by means of a gaseous
medium traveling Webs printed on one side there
of, said device comprising a casing, guide-Walls
of said channel for withdrawing said gaseous
`
'7. A device for drying by means of a gaseous
medium traveling webs printed on one side there
of, said device comprising a casing, guide-walls
in said casing, said walls forming a relatively
narrow channel adapted for the reception of the
web, a web-guide for carrying said web through
said channel, pressure-means for supplying said 60
medium to said channel at one end thereof, suc
tion means for withdrawing said medium at the
casing through said channel along said guide
other end of said channel, and means for varying
the cross-section of the latter.
8. A device for drying by means of a gaseous
medium traveling webs printed on one side there
Walls round a reversing point and back to said
one end of said casing, means for blowing said
in said casing, said walls forming a narrow chan
gaseous medium into said channel at one end
nel closely embracing said web and passing
in said casing, said walls forming a narrow chan
nel along the. printed side of said web, a web
guide for feeding said web from one end of said
thereof along said web when being fed there
through by said Web-guide, and suction means
provided at the other end of said channel for
of, said device comprising a casing, guide-walls
through said casing from one end round a re 70
versing point back to the other end, a web
guide for feeding said web through said chan
withdrawing said medium from said printed side ' nel from the one to the other end thereof, a
container arranged midway with respect to said
of said web.
3. A device for drying by means of a gaseous channel for supplying said medium under pres 75
75
4
aisance
-
"
.
sure to the printed side oi said we_b when- being
medium trom the ends of said channel after pas- `
ied through said channel by said web-guide, suc
sage along the printed side oi said web.
. tion means provided at one end of said casing
and near both ends oi said channel i'or discharg
ing said medium from the latter, and means for
varying the cross-section oi’ said channel.
9. A device i'or drying by means of a gaseous
medium traveling webs printed on one side there#
oi. said device comprising a casing, guide-walls
10 in said casing. said walls forming a relatively
long and narrow channel extending in forward
and backward direction round a reversing point.
an inlet at the one and an `outlet at the other
end of said channel, a series of rollers disposed
15 one behind the other and arranged within said
casing to guide said web through said channel
from said inlet past said reversing point back`
l0. A device for drying by means oi a gaseous
medium traveling webs printed on one side there
oi’. said device comprising a casing, guide-walls
in said casing, said walls'formi?g a relatively
long and narrow channel extending in forward
and backward direction round a reversing point
and enclosing the traveling web, an inlet and
an outlet for the _web von said channel, a series
of rollers disposed onev behind the .other and
arranged within said casing to guide said web
through the whole of said channel from said inlet
over said rollers to said reversing point and back
to said outlet, means for supplying said gaseous 15
medium to the printedside oi both traveling web
runs on said rollers, suction means for withdraw
towards said outlet, a.' container near said re
ing said medium after passage along the printed
versing point for supplying said gaseous medium
side of said web. and means for varying the cross
section of said channel.
THEODOR FUYKERS.
to the printed side of both web runs on said
rollers, and suction means for withdrawing said
20
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