IMPROVEMENTS IN CORRUGATING MACHINES
Year: 1882

page_text: LETTERS PATENT to Vital Bernhard Daelen, Engineer and Manufacturer, in
the city of Berlin, kingdom of Prussia, for an invention of "IMPROVEMENTS
IN CORRUGATING MACHINES."
PROVISIONAL SPECIFICATION left by the said Vital Bernhard Daelen at
the Office of the Commissioners of Patents on the 27th February 1882.
VITAL BERNHARD DAELEN, Engineer and Manufacturer in the City of Berlin,
Kingdom of Prussia, IMPROVEMENTS IN CORRUGATING-MACHINES
My invention relates to machines by which corrugations are formed in plates
and tubes by means of a process of rolling, or in plates alone by pressing or
stamping, and the improvenients consist in making the projecting rings or annular
parts of the corrugating-rollers movable on such rollers, or the ledges or ribs of the
stamping or pressing-dies movable on the body of such dies, and in combining
with the said rings, or the said ledges, suitable devices by which they are caused
to approach each other while the rollers or the dies are gradually brought closer
together.
When rollers are used, one roller, say the lower one, may have one fixed ring,
placed, by preference, in the middle of its length, while the other rings of this
roller and all the rings of the other roller are movable lengthwise on the same.
order to cause the rings to rotate with the rollers, the latter are provided with
feathers.
In
The rings must be shifted in such a manner that the distance from any ring to
the next one, will always be equal for all the rings, while this distance itself
decreases as the formation of the corrugations progresses. On the other hand,
when the decrease of the said distance is uniform in respect to time, the speed with
which the rollers are brought closer together, must be greater at the beginning
than towards the end of the process. The proportion between the speed of the
two motions being properly calculated, the corrugations will be formed exclusively
by a bending of the plate, and without straining or stretching it.

page_text: The distance between the rings may be varied by a series of screws placed
parallel to the roller and acting with threads of appropriate pitch and direction on
the rings in which they work. These screws are put in rotation by suitable
gearing. To the bearings of the adjustable roller, which is, by preference, the
upper one, the requisite motion may be imparted by cam-disks of suitable form.
The said devices may, however, be varied in different manners. Thus, for
instance the rings may be guided by forked slide-blocks acted upon by screws or
by a combination of screws and levers, and the adjusting-mechanism of the
movable roller may consist of sliding wedges with curved face, or of screws
rotating with diminishing speed.
When the corrugations are to be formed by pressing, the movable ledges of the
dies may be shifted together by similar means as the aforesaid rings, the speed
with which such shifting is carried out, being always in due proportion to the
spoed with which the dies are brought nearer to each other. In case, the
corrugations are made one after the other, one die is provided with a single fixed
ledge, the other with two movable ledges, and the latter may be shifted together
by means of curved arms attached to the die with the fixed ledge and acting on
pins or rollers projecting from the ends of the movable ledges, or by suitably
arranged curved levers.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Vital Bernhard Daelen in the Great Seal Patent Office on the
25th August 1882.
VITAL BERNHARD DAELEN, Engineer and Manufacturer, in the City of Berlin,
kingdom of Prussia "IMPROVEMENTS IN CORRUGATING-MACHINES
My invention relates to machines for corrugating plates and tubes by means of
a process of rolling, or plates alone by pressing or stamping, and the improvements
consist in making the projecting rings or annular parts of the corrugating rollers
movable on such rollers, or the ledges or ribs of the stamping or pressing-dies
movable on the body of such dies, and in combining with the said rings or ledges
suitable devices by which they are caused to approach each other at such a rate
during the corrugating operation that simultaneously a number of corrugations
may be formed by exclusively bending the metal.
A rolling-machine comprising my improvements is represented on the annexed
sheet of drawings, Fig. 1 being a sectional front elevation, Fig. 2 an end view from
the left-hand side, Fig. 3 a vertical section on line X X, Fig. 1, looking towards
the standard N, Fig. 4 a sectional view of the rollers with the_corrugating-rings
close together, Fig. 5 a plan of part of the machine, and Fig. 6 a sectional
view of an arrangement for corrugating and at the same time bending plates.
The machine shown by Figs. 1 to 5, consists in the first place of the roller A

page_text: mounted in fixed bearings, and of the roller B rotating in bearings L L, which are
vertically adjustable. The former carries the corrugating-ring C, keyed on the
roller, and the like rings C¹ C', CC, CC, which, while being free to slide
thereon, are caused to rotate with the roller by means of feathers. The distance
of the movable rings from each other and from the fixed ring C is regulated by the
screws c¹ c¹, cc, cc, which are mounted with their ends in the disks m m attached
to the roller. The said screws are rotated by a combination of wheels to be
described hereafter. The screws c¹ belonging to the rings C¹ C¹, and of which
there are two, one on either side of the roller, work with right-hand and left-hand
threads in the corresponding holes of the said rings, whereas they pass with a
certain play through holes in the rings C, C and C³. In a similar manner the
screws care put in relation to the rings C, while they pass freely through the
rings C, C and Cs, but the threads of these screws have double the pitch of the
threads of c². The third pair of screws, c³, acts on the rings C³, but with threads
of treble the pitch of c¹. It is evident herefrom that, when all the screws c¹, c
and c³ are rotated uniformly, the distance between any two neighbouring rings
will be diminished or increased by the same amount.
The corrugating-rings D D, D¹ D1, D2 D3 are arranged on the roller B and
combined with the screws dd, a d¹, d³ ³ in the like manner, but there is no fixed
ring, as all the rings, except C, must be adjusted towards or away from the centre
of the whole system, which is the vertical central plane of the ring C. Tho
rings D D must, however, be shifted on the roller with but one half the speed of
the rings C¹ C¹ so that either ring D may always remain opposite to or in the
niddle of the space between C and C₁; consequently the pitch of the threads of
the screws d d belonging to the rings D D must be equal to but one half the pitch
of the threads on c c. For similar reasons the pitch of the threads on d¹ d¹
and must respectively be in proportion to the pitch of the threads on c² c¹
as 1. These proportions of pitch necessarily require an equal rotative
speed for all the screws.
:
The lower roller A is driven by a pinion (not shown in the drawing) which
gears with the spur-wheel E Keyed on the prolongation of the roller-journal. On
the same journal is, moreover, fixed the wheel F, from which rotative motion is
transferred by means of the intermediate wheels F and F to the wheel F³ fixed
on the journal of roller B. The wheel F turns on a pivot terminating in a
slideblock which is free to slide horizontally in a slit in the bracket P; besides,
the said pivot is connected by a coupling-bar n to the journal of roller B. This
arrangement causes F to remain in proper gear with F³ as well as with F' when
the roller B is raised or lowered.
The vertical adjustment of the roller B is produced by two cam-disks R, R,
keyed on the shafts J J of the worm wheels J¹ J', which are driven by the
worms H'H' carried by a common shaft E. The said cam-disks have on either
side a rib forming a spiral curve and engaging with a slit cut into the end of either
of the two pins or rotative blocks k k mounted in the upper part of the adjustable
bearing L. The cam-disks being turned, the ribs of the same will slide in
the pins k, and, by the medium of the latter, depress or raise the bearings L.
The said bearings must be provided with an oblong hole for the shaft J to pass
through, as otherwise this shaft would prevent them from being moved.
I will now proceed to describe the manner in which the screws c, c', c², c³,
d, d, d², and the can-disks R R are driven, without however at present taking
into account the reversing of motion of the machine. On the end of one of the
journals of the roller A is fixed the pinion a which gears with the wheel b on the
countershaft o (see Fig. 5), while the wheel b' keyed on the same shaft, is in gear
with the pinion a placed loose on the roller A. The wheels b and b¹ being of
different diameter, as also the pinions a and a¹, the said pinion a¹ will rotate on
the roller when the latter turns, and will consequently cause the rotation of the
pinion a³ made in one piece with a¹. The pinion a²* gears with the pinions e fixed
on the ends of the screws c, c¹, c², c³, and thus puts all these screws in uniforma

page_text: rotation. The mechanism serving to drive the screws of the roller B is like the
one described, (the same has therefore been omitted in Fig. 1); it may, however be
observed that the countershaft thereof is mounted in arms projecting from the
movable bearing L.
The rotation of the shaft H, which drives the cam disks R by means of the
worms Hand the worm-wheels J¹, is caused by the wheel G placed on the said
shaft and gearing with the wheel E.
The spirals according to which the ribs of the cam disks R are arranged, must
be so formed that for a given angle between two radii the difference of these radii
is greatest at the outer end of the curve, while it gradually decreases towards the
inner end. The reason herefor is the following: When the speed of rotation of
the rollers is uniform, the screws of the same will also rotate uniformly; conse-
quently the corrugating-rings will be shifted together in equal periods of time by
the same amount. For a given unit of this shifting motion, the amount by which
the corrugating-rings D, D', D2 penetrate into the spaces between the rings
C, C, C, C³, must at the beginning be greater than towards the end of the
operation, because at the onset of the forming of a corrugation the increase of
depth of the inflection is greater than towards its completion, provided always that
the corrugations are to be produced by bending only. The form of the curve of
the cain-disk may be determined by calculation or by drawing.
Considering that the adjustment of the upper roller and of the corrugating-rings
must take place while the machine is in operation, the corrugations will at first
become tapered, .e. they will be deeper and narrower at the end of the plate last
exposed to the action of the rollers. It is therefore advantageous to let the plate
pass alternately forward and backward between the rollers until the corrugations
have attained the desired depth. For this purpose the machine requires to be
provided with a reversing-gear, which is, however, omitted in the drawing, as it
presents no novelty. But, though the motion of the rollers be reversed, the
adjusting-mechanisms must always work forward while a plate is operated upon;
it is therefore necessary to reverse these mechanisms in their turn, after the whole
machine has been reversed, so that in consequence of such double reversion they
will continue to work in the same sense.
For attaining this object, the wheel G driving the worms H', is fixed on a
aleeve G2, the ends whereof form coupling-boxes which can engage with the
coupling-boxes and 11 respectively, fixed on the shaft H. Moreover, a wheel G¹
rotating loose on an axle G and gearing with the wheel E, is provided for, which
may be shifted simultaneously with the sleeve G and the wheel G, but in the
contrary sense, by means of a double-armed forked lever 12, as shown by Fig. 1.
The parts being in the position represented by drawing, E actuates the shaft H in
one direction by means of the wheel G and coupling-box , while the wheel G¹
gearing at the edge with E turns loose on its axle. When the lever 3 is put into
its other end-position, G¹ is shifted to the right, while G being shifted to the left,
comes out of gear with E and into gear with G, so that G will now rotate in a
sense contrary to its previous rotation, provided E continues to turn in the same
direction. The left-hand teeth of the sleeve G2 having finally been put into
engagement with the teeth of the coupling-box ɩ, the shaft H will also rotate again
with the wheel G. While this reversal is being carried out, the three wheels E, G
and G will at a certain moment all be in gear with each other. The reversal is
therefore possible only while the machine is at rest; but this causes no incon-
venience, as the reversal need only be carried out during the stoppage occuring
when the plate has arrived with either of its ends near to the rollers, and the
direction of motion of the latter has to be changed.
The mechanism for reversing the motion of the screw-spindles is similar to the
described arrangement. The wheels a, b and g correspond respectively to the
wheels E, G and G, the lever i to the lever 1, and the sleeve b to the sleeve G².
In the like mechanism for the roller B (which has not been shown in Fig. 1) the
wheel g rotates on a pin carried by an arm cast together with the cover of the

page_text: bearing L. The levers of the different reversing-arrangements are by preference
so connected with each other, that they may be moved simultaneously by a single
hand-lever.
As has already been stated, the decrease of distance between the corrugating-
rings and between the rollers during the rolling-process, causes the corrugations to
become to a certain degree tapering at first. But when they have attained the
desired shape at one end of the plate, they are rolled parallel, which is done by
passing the plate to and fro soveral times between the rullers, while the adjusting
mechanisms are stopped from operating, so that the position of the corrugating-
rings and of the upper roller remains unaltered. For the purpose of rendering
possible such stoppage, the wheels G, G¹ and E are arranged in such a manner
that G, when being driven by E, will not immediately come into gear with GL
after the sleeve G² has been disengaged from 1, nor that, when being driven by G',
it will immediately come into gear with E, after C has been disengaged from L.
The sleeve may thus be put into two positions in which it will rotate without
causing a rotation of the shaft H. In an analogous manner the transferring-wheels
a, b, gand the teeth of the sleeve 6' as well as of the coupling-boxes on the
shaft o aro brought in relation to each other, (of course in respect to both rollers
A and B.) Thus the cam-disks R as well as the regulating-screws of all the
corrugating-rings may simultaneously be put out of operation, while the rollers
rotate.
Fig. 6 shows an arrangement for corrugating and, at the same time, bending
plates transversely to the corrugations. The same consists, as in other machines
of this kind, of a combination of two adjustable auxiliary rollers A' and A² with
the rollers A and B; but the rollers A¹ and A² are provided with movable
corrugating-rings in the same manner as the roller A.
The devices for adjusting the upper roller B and the corrugating-rings may be
modified in various ways. In the Erst place, the corrugating-rings may be guided
on both sides by forked slide-blocks, which, in their turn, are guided parallel to the
rollers, and through which the regulating-screws pass in a similar manner as has
been described in respect to the corrugating-rings shown in the drawing. More-
over, these slide-blocks may be connected together by a system of crossed levers,
called lazy-tongs, the common pivot of each pair of crossed levers being fixed in a
slide-block, while the joints at the ends of the levers are in the vertical centre-line
of the space between two blocks. In this case but one screw on either side is
required for shifting the slide-blocks together with the corrugating-rings. Also
two-armed levers might be used, having arms of different length, each of these
levers acting with one end on a slide-block, while their other ends are moved
uniformly by a screw. To the arms of these levers such proportions would have to
be given as is necessary for imparting to the slide-blocks the requisite motion. In
Boine cases the regulating-screws of the arrangement represented by drawing may
be placed inside of the rollers, provided these be made hollow.
Instead of the described cam-disks by which the vertical adjustment of the
upper roller is caused, cam-plates having a rectilinear motion may be employed,
which act analogously to the former on the bearings L L, and the operating face of
which is inclined at a greater angle upon the part which first comes into action,
than upon the part which acts last. These cam-plates are indeed the equivalents
of the cain-disks inasmuch as they cause the saine kind of vertical notion as the
latter, with the sole difference that their own motion is horizontal and rectilinear,
whereas the cam-disks have a rotary motion. Another arrangement for the adjust-
ment of the upper roller consists in the use of screws which are driven with
decreasing speed by means of a combination of wheels of special shape.
The rolling-machine represented by drawing may also be used for pressing
corrugations into tubes. For this purpose the front standard N together with its
appurtenances must be so arranged that the front end of the roller B may be made
free, in order to allow the tube to be brought on the roller and to be taken off
again, and, besides, the roller must, during this manipulation, be prevented from

page_text: dropping at its forward end by means of a suitable support, which does not interfere
with the tube to be corrugated.
When the corrugations are to be formed by presses, straight or curved dies with
projecting ribs or ledges are required instead of the rollers and the rings of the
machine herein before described. For the rest the arrangement does not substantially
differ from the foregoing. The said ribs or ledges are made movable on the body
of the dies in a similar manner as the corrugating-rings on the rollers, and they
are provided with screws or other devices, such as described, for causing them to
approach each other while the dies are being pressed together; besides, the
mechanisms by which the ledges on one hand, and the dies on the other hand, are
moved, are again so constructed and combined that the corrugating-operation is
carried out solely by bending the plate, all in a like manner as has herein before
been specified in respect to the rolling-machine.
Having thus described the nature and object of this invention, and the manner
in which it is to be carried out in practice, I hereby claim as new and important
features of the same :
1., In machines for the manufacture of corrugated plates and tubes the com-
bination with a base consisting in a roller or a die, of movable corrugating-rings or
ledges, and of a suitable mechanism by which the said rings or ledges are shifted
together during the formation of the corrugations transversely to the latter,
substantially as and for the purpose described.
2., The combination with the movable corrugating-rings or ledges C, C¹, C², C³,
D, D, D², &c., of the rotating screws c, c', c², c, d, d', d², &c., having different pitch
and operating on the said rings or ledges, substantially as specified.
3., The combination with the roller B provided with the movable rings D, D', D²,
&c., and the screws d, d¹, d², &c., of the cam-disks R R, or the described equivalent
cain-plates, acting on the bearings L L of the roller B, as herein before set forth.
In Witness whereof I, the said Vital Bernhard Daclen have hereunto set my
hand and seal this eighteenth day of August in the year of our Lord one
thousand eight hundred and eighty two.
THE
TAATENA 15
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