AN IMPROVED MACHINE FOR ROLLING WROUGHT IRON OR STEEL CYLINDERS
Year: 1884

page_text: "
I, VITAL DAELEN, of No 21 Chausseestrasse, Berlin, Prussia Engineer, do hereby
declare the nature of said Invention for AN IMPROVED MACHINE FOR
ROLLING WROUGHT IRON OR STEEL CYLINDERS" 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 the manufacture of large seamless cylinders of
wrought iron or steel, for steam boilers and other vessels, by incan's of a rolling
process, and it substantially consists in a machine comprising a long roll adapted
to be passed through the cylinder and to carry or support it, and a short roll
acting from the outside on the cylinder and provided with means for being pressed
against the same and moved lengthwise to and fro during the rolling operation.
A machine of this kind is represented on the annexed three Sheets of Drawings.
Fig. 1 is a sectional front elevation with the cylinder to be rolled, in its place.
Fig. 2 is a plan corresponding to Fig. 1 except that the cylinder is omitted and the
long roll shifted to some extent from its working position. Fig. 3 is a sectional
end view partly on the line 1, 1 and partly on the line 2, 2 Fig. 1.-Fig. 4 is a
section on line 3, 3 Fig. 1. Fig. 5 shows the driving-gear in plan. Figs. 6, 7
and 8 show the carriage C with the short roll B and guiding rolls H respectively
in vertical transverse section, in horizontal section and in front elevation. Fig. 9
represents the carriage C with certain parts thereof in different position and a
portion of a roll A with conical part, Fig. 10 is a side view, Fig. 11 a sectional
plan and Fig. 12 a front view of the sliding carriage Y carrying the flanged guide-
rolls T. Fig. 13 shows in vertical sectional elevation a modified arrangement of
the rolling-machine. Fig. 14 is a sectional plan of the same, and Fig. 15 a top
view the latter Figure being turned at right angle relatively to Fig. 14.
The long roll A, Figs. 1, 2 and 4, is carried at one end in the two bearings b
and c having a common foot-plate arranged to slide on and to be guided by
ways M, and connected to a chain m, which runs over the sprocketwheels m', so
that, when one of the said wheels is rotted, the bearings b and c will be moved
along the ways M, and the roll A withdrawn from the space between the two
frames L, so that the cylinder to be rolled, inay then be brought into its place or
Pin G21

page_text: removed therefrom. At its other end the roll A is supported during the rolling
operation in the fixed bearing a. The journals running in this bearing projects
beyond the same with a conical part into the coupling-sleeve S formed on the end
of the driving-shaft W; and it is provided on the said part with grooves engaging
with feathers s¹ in the sleeve, for the purpose of being rotated by the shaft W.
X is the driving-pulley.
In order to prevent the roll A from being heated excessively, it may be made
with a central boring into which a pipe projects for conducting water into the
roll.
The short roll B co-operating with the roll A, is carried by bearings D (see
Figs. 6, 7, 8) having a common foot-plate, pivoted to a box E by means of a pin d.
This pin is vertical to the axis of the roll B, and it is placed in the transverse
central plane of the roll, but rearward of the latter, so that during the rolling
process the roll may swivel on d, while it has the tendency to return to its normal
position; i.e. the position in which its axis is parallel to the axis of the roll A. The
said box E is carried by its trunnions e in brasses F, mounted in the carriage C so
as to be vertically movable therein. These brasses are held in their place by
plates y, and they are supported by springs f, while they may be pressed down by
the wedges w, bearing with their upper side against the blocks, which, in their
turn, abut against and are movable upon the guiding-bars Y, fixed to the top
frame-part N. The wedges may be drawn towards each other to press the
bearings F down and the roller B against the cylinder G, by means of the screw-
spindle g working with right and left-hand screw-threads in the wedges.
In addition to the roll B and its bearings, the box E carries a frame I, to which
are connected by pivots h¹ the four plates h, carrying in bearings the guide-rolls H.
The pivots h¹ are arranged in respect to the rolls H in a similar manner as the
aforesaid pivot d is brought in relation to the roll B, so that the rolls H may
swivel on the frame I. The bearing surfaces for the plates h are preferably made
inclined, so as to be approximatively vertical to the radii of the cylinder G which
pass through the axles of the rolls H.
The frame I is suspended in the box E by the screws a¹ and springs k, and it
can be adjusted higher or lower in respect to E by means of the nuts on the four
screws d, bearing on projecting parts of the frame I, while the screws are
fastened with their ends to the pieces c¹ abutting against the guiding bar Y and
arranged to slide vertically between ledges d' on the carriage C. By the said
screws the rolls H may thus be adjusted up or down independently of the roll B so
that they may be in contact with the cylinder G when the roll B is.
The carriage C is supported by guiding-ledges el on either side of the top part N
of the main frame, and it is slowly moved to and fro during the rolling operation
by a mechanism consisting of the rack O attached to the carriage C, in the pinion o¹
gearing with O, in the bevel-wheel P fixed on the axle i of o' and gearing with the
two bevel-wheels p and p' placed loose on the vertical-shaft R, moreover in the
toothed coupling-sleeve sliding on a feather on the shaft R and arranged to be
brought in engagement with the coupling teeth of either of the two wheels p and
2 by means of the lever q, and finally in the worm-wheel r on shaft R with which
gears the worn on the driving-shaft W. It will be seen herefrom, that,
according as the sleeve Q is employed to connect the wheel p or the wheel p' with
the shaft R, the carriage C with the roll B will be moved lengthwise along the
cylinder G in one direction or the other.
For guiding the cylinder endwise, the flanged rolls T are provided for, two on
either side of the machine, carried by their axles t in arms of a slide U guided
vertically on a hanging bracket or carriage V that slides on the guiding-ledges c¹.
Either slide U may be moved up and down by turning the hand wheel f¹, and
thus rotating, by means of a worm-wheel and worm, the screw g¹, working in a
nut on U. The horizontal displacement of either carriage V is obtained by a
pinion gearing in the rack j, fixed to Y, the said pinion being connected through

page_text: its shaft with a ratchet wheel u, and operated by a pall on the lever v. The lever
has on its end a weight by which the rolls T are continually pressed against the
cylinder-ends.
The cylinder to be rolled having been heated, the roll A is drawn back by means
of the chain m, the cylinder is brought into the proper position, and the roll pushed
forward again through the same, until its conical end is properly in engagement
with the socket S. Hereafter the carriage V on the right-hand side of the
machine is moved to the left so that the flanges of the rolls T will push the
cylinder against the collar on the roll A. The carriage C having then been so
adjusted as that the roll B will be over the left-hand end of the cylinder, the
rolls T at the other end are pressed down to create between the roll A and the
cylinder the friction required to rotate the latter. Subsequently the machine is
started, while the roll B and the rolls H are pressed against the cylinder, and the
carriage C with these rolls is slowly moved to the right by an appropriato
adjustment of the coupling-sleeve Q. The rolls B and H will then automatically
assume an oblique position corresponding to the particular relative motion of the
rolls and the cylinder, the swivelling bearings D and h allowing the rolls to be so
displaced. The rolling operation will thus be carried out in streaks running in
screw-lines around the cylinder.
After the carriage C has advanced a certain distance to the right, the left-hand
carriage Y is pressed with its rolls T against the corresponding edge of the
cylinder, so as to afford additional security against any shifting of the same in
this direction. Subsequently, the carriage C on coming in contact with the right-
hand carriage Y, pushes it back until the roll B has arrived opposite to the
right-hand edge of the cylinder. Thereupon the motion of the carriage C is
reversed by shifting the coupling-sleeve Q, and in due time the right-hand rolls
are again brought to bear against the cylinder. Thus the rolling operation
continues until the cylinder has attained the required size, the roll B being pressed
further down after every pass from the left to the right, or vice-versa.
The chief advantage which the described machine possesses over other machines
serving for the same purpose, but having rolls of equal length, consists in this that
the roll A may be made of much smaller diameter without its being liable to bend
as the pressure with which the short roll B is required to act, is but a fraction
of the pressure necessary when both rolls are of the saine length. The machine is
therefore adapted for rolling cylinders or tubes of less width, and, besides, the raw
cylinders to be rolled may be made with a hollow of smaller diameter.
In the process of rolling plain cylinders having equal width throughout their
whole length, the box E remains stationary in respect to the carriage C, that is to
say no angular displacement of the said box takes place. If, however, the cylinders
are to be wider at one end than at the other, or to have portions of conical or
curved form, an automatic adjustment of the box E is required, so that the rolls B
and H may always act vertically against the surface of the roll A, which in such
case has, of course, to correspond to the form to be given to the cylinder. For this
purpose the machine is provided with a mechanism consisting of an arm u¹ fixed
to one of the trunnions e, of the lever v¹ pivoted at w¹ to the carriage C and of the
bars and y¹, connecting the ends of the lever respectively with the arm u¹ and
the top of the slide-block being on the same side of the carriage as the said
trunnion e. Both blocks are movable in rotative sense on a semi-cylindrical
projection of either wedge w, and the guiding-bars Y are shaped in accordance
with the form of the roll A, a portion whereof is shown in Fig. 9. Thus in the said
Figure the bar Y is represented with the inclined part a² 6² corresponding to the
conical part a³ 63 of the roll whereas the other parts of the bar are parallel to the
cylindrical parts of the roll.
When the carriage provided with this mechanism arrives opposite to the inclined
portions ab of the guiding bars Y, the slide-blocks will assume an oblique
position as in Fig. 9, and thus act through the lever v', the bars y¹ and x¹, and the

page_text: arm u¹ on the box E, so as to cause it to turn by the same angle as the blocks z,
the two arms of the lever v¹ bearing to each other the proportion required for
this purpose. The rolls B and H will, in consequence, also be brought into an
oblique position and thus act vertically against the conical portion a³ ³ of the
roll A. In similar manner other forms, deviating from the plain cylinder, may be
produced..
In the modified construction of machine, shown by Figs. 13 to 15, the roll A is
placed vertically, and the carriage C containing the rolls B and H slides on vertical
guides e¹ formed upon a standard L', while it is actuated by a screw-spindle O¹.
The journalled box E and mechanism for automatic angular adjustment have in
this case been omitted, although they may also be employed as in the machine
with horizontal rolls. The roll A is arranged to be withdrawn from the machine
by means of any suitable lifting-gear. For this purpose the upper bearing fis
made conical so that it will lift out of the frame L' together with the roll and thus
leave an opening for tho roll to pass through. is a ring to which the chain of
the lifting-gear is to be attached. The lower journal of the roll which is con-
structed as in the first-described arrangement, projects with its conical part into
the hollow boss of the driving-pulley X, which rotates on a vertical ping. From X
motion is transmitted to the screw-spindle O' by means of the bevel-wheels n'
and q', the shaft and the friction-disks and or 2, the latter two disks
forming part of a sleeve m² that may be shifted on the shaft by the lever q, so
as to bring either disk jor k³ into contact with the disk 1, and to cause rotation
of the spindle O¹ in one direction or the other. The arrangement as shown in the
Drawing also allows the speed of rotation of O₁ to be varied. The pressure
between the rolls A and B is obtained by means of two wedges n² and o² acting on
the frames p² and q containing the bearings of the roll A, the wedges, which are
connected together, being adjustable by the screw-spindle 72, arranged to be
actuated by a hand-wheel and worm-wheel gearing. For allowing the pulley X to
follow the roll A when it is shifted, the pin g on which the pulley rotates, is fixed
to a piece 2 sliding on the plate 82. This piece also carries the bearings for the
shaft. The cylinder to be rolled is supported by rollers T¹, shown in the
Drawing as being placed radially to a cylinder of medium diameter. The
carriages V with the flanged rolls T are similar to those of the machine described
first.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. In a machine for rolling seamless cylinders, the long roll A adapted to be
shifted lengthwise to the extent required for introducing the cylinder G into the
machine and removing it therefrom, the short roll B mounted by means of
swivelling bearings in a carriage C, sliding on ways el parallel to the roll A, and
mechanisms for rotating the roll A, for shifting it lengthwise, for imparting to the
carriage Ca reciprocating motion, and for adjusting the rolls A and B closer
together or further apart, all combined together substantially as and for the purpose
described.
2. The long roll A carried at one end in bearings b and c movable on ways M,
parallel to the roll, the short roll B mounted in bearings pivoted to the box E,
which is adjustable towards and away from the roll A in a carriage C, sliding on
ways e' also parallel to the roll A, and mechanisms for rotating the said roll A, for
shifting its bearings b and c on the ways M, for moving to and fro the carriage C
on the ways e¹, and for adjusting the box E in respect to the carriage C, all
combined together, substantially as and for the purpose described.
3. The combination with the long roll A, short roll B, carriage C and box E of
the guiding rolls H, rotating in bearings h, pivoted to a frame I which is supported
by springs and adjustable in respect to the carriage C, and means for carrying out
the adjustment of I, substantially as and for the purpose described.

page_text: 4. The combination with the rolls A and B reciprocating carriage C and box E,
of the flanged guiding-rolls T, mounted in a slide U, adjustable on a carriage V
movable on ways el parallel to A, and mechanisms for adjusting U, and for shifting V
on the ways e, substantially as hereinbefore set forth.
5. The combination, with a long roll A deviating partly or wholly from the
cylindrical form, tho short roll B, the box E mounted by trunnions in tho
carriage C, of the slide-blocks bearing on semi-cylindrical parts of the wedges w
and abutting against the bars Y having a form corresponding to the roll A, and of
the arm u' fixed to one of the trunnions e, lever vand connecting bars x and y',
substantially as and for the purpose described.
Dated this Fighth dow of Avant 1001.