A MACHINE FOR CUTTING GROOVES ON ROLLERS FOR USE IN MILLS
Year: 1884

page_text: I, PEIRSON TURNER of Saint Peter's Ironworks, Ipswich in the County of Suffolk,
Engineer do hereby declare the nature of my invention for "A MACHINE FOR
CUTTING GROOVES ON ROLLERS FOR USE IN MILLS to be as follows:-
This Invention has for its object a machine for cutting spiral or straight grooves
on rollers of chilled iron or other metal for use in mills.
The machine consists of a frame or bed carrying a table which receives a to and
fro linear movement like the table of a planing machine; slow in one direction
whilst the tools are cutting and more rapid during the return movement in which
no work is done.
The rolls are mounted on their own spindles carried horizontally by standards
upon the table.
The table is adapted to receive two rolls and it also carries apparatus by which
these rolls are rotated to and fro during the corresponding movements of the table.
This apparatus consists of an axis which is coupled by gear with a wheel having
inclined teeth engaging with a rack having corresponding teeth fixed upon the
frame or bed. Hence as the table traverses along the bed the toothed wheel is
rotated and it imparts to the axis a corresponding motion at a speed varied by the
intermediate gear.
This axis and the spindles on which the rolls are carried are all
aligned and the spindles are clutched to the axis one at either end.
The tools by which the grooves are cut are carried upon bridges fixed to the
frame and the rolls are carried by the table under the bridges through and through.
Each bridge has three tools upon it mounted in tool carriers such as are used in a
planing machine.
The tool carriers are set upon the bridge at sixty degrees apart and they are
provided with adjusting screws by which the pointed tools which they carry may
be so set as simultaneously to trace lines upon the face of the roller with this
angular distance between them. Hence the three tools cooperate to complete one
half of the surface each tool completing its own are of sixty degrees. Then
afterwards the roller is turned round and the other half of the roller is similarly
operated upon by the tools.
The tool carriers might be set at angles of forty five degrees and worked in a
similar manner or other angles may be adopted but the angle of sixty degrees is
preferred.
CARPMAEL & Co.,
Agents for the Applicant.

page_text: I PEIRSON TURNER of Saint Peters Ironworks, Ipswich in the County of Suffolk
Engineer do hereby declare the nature of my invention for "A MACHINE FOR CUTTING
GROOVES ON ROLLERS FOR USE IN MILLS "and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:—
This Invention has for its object a machine for cutting spiral or straight grooves
on rollers of chilled iron or other metal for use in mills.
The machine consists of a frame or bed carrying a table which receives a to and
fro linear movement like the table of a planing machine; slow in one direction
whilst the tools are cutting and more rapid during the return movement in which
no work is done.
The rolls are mounted on their own spindles carried horizontally by standards
upon the table.
The table is adapted to receive two rolls and it also carries apparatus by which
these rolls are rotated to and fro during the corresponding movements of the table.
This apparatus consists of an axis which is coupled by gear with a wheel having
inclined teeth engaging with a rack having corresponding teeth fixed upon the
frame or bed. Hence as the table traverses along the bed the toothed wheel is
rotated and it imparts to the axis a corresponding motion at a speed varied by the
intermediate gear. This axis and the spindles on which the rolls are carried are
all aligned and the spindles are clutched to the axis one at either end.
The tools by which the grooves are cut are carried upon bridges fixed to the
frame and the rolls are carried by the table under the bridges through and through.
Each bridge has three tools upon it mounted in tool carriers such as are used in a
planing machine.
The tool carriers are set upon the bridge at sixty degrees apart and they are
provided with adjusting screws by which the pointed tools which they carry may
be so set as simultaneously to trace lines upon the face of the roller with the
angular distance between them. Hence the three tools cooperate to complete one
half of the surface each tool completing its own are of sixty degrees. Then
afterwards the roller is turned round and the other half of the roller is similarly
operated upon by the tools.
The tool carriers might be set at angles of forty five degrees and worked in a
similar manner or other angles may be adopted but the angle of sixty degrees is
preferred.
In order that my said Invention may be most fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of a machine constructed in accordance with my
Invention.

page_text: Figure 6 is a front elevation of one of the bridges upon which the tool holders
are carried, together with the apparatus which is employed for the purpose of lifting
the tools at the end of the cut and holding them off the work whilst the table
returns; and then again returning the tools to their working positions. This
Figure is drawn to a larger scale.
Figure 7 shows the same parts in elevation, and Figure 8 in plan.
Figure 9 is a side elevation full size, of a tool box, and Figure 10 is a plan of
the same.
A. A. is the bed frame and B is the table thereon. The table receives
longitudinal movement upon the bed by means of a screw C passing through a nut.
beneath the table. The screw C is formed upon a shaft on which is the pinion C¹;
this gears with a wheel D on the same axis with the belt pulleys E. There is also
upon the shaft Ca wheel C with internal gear teeth, a pinion on the same axis
with the belt pulleys and the wheel D gear into them.
C3 is a clutch which, by
means of a fork F can be slidden along the shaft C, the clutch can then be made
to engage either with the pinion C¹ or the wheel C, so as to render either one or
the other fast with the shaft C.
The wheel C when in use gives the slow forward movement which is employed.
whilst the tools are cutting, and the pinion C₁ when fast on the shaft gives the
rapid return motion which takes place when the cutters are raised from the work.,
The fork F is operated by tappets or projections upon the table and the sliding
bar F connected with the clutch fork which come in contact as the table approaches;
the end of its movement in either direction. GG are the rollers to be operated
upon their spindles are carried in bearings B¹ B₁ upon the table, and the ends of
the spindles are also securely held in sockets H H which are fixed upon an axis
passing through a sleeve I, which is carried in the bearings B2 B2 upon the table.
The sleeve I has upon it arms I¹ I¹. These carry the bearings of the worm K on
the axis of which is a wheel K¹ and by this the worm can be moved a short
distance, either by hand or a simple mechanism after each cut in order to move the
roller the short distance which separates one groove from the next. The worm K
gears with a worm wheel L which is fast upon the axis connecting the sockets H H.
On the sleeve I also is fixed a spur wheel M gearing with a pinion M¹ on an axis
which is carried in bearings B B upon the carriage, and on which is also fixed the
wheel N. The teeth of the wheel N are skew teeth, and they engage with the
corresponding teeth of the skew rack O fixed upon the frame or bed. Consequently
as the table moves to and fro a partial rotary motion is imparted to the sleeve I and
the sockets HH, and to the spindles of the rolls which are held in these sockets.
The amount of angular motion imparted can be varied by changing the gear wheels
between the rack O and the sleeve I. P P are the bridges for carrying the tool
holders, Dovetailed guides P¹ P¹ are fixed upon the bridges. These are more
clearly seen in Figures 9 and 10.
QQ are blocks which can be adjusted along the guides P' P¹ radially nearer to
or further from the centre by means of a screw P³.
R is the tool carrier; it is connected with the block Q by an axis Q¹ on which it
is able to rock. This mounting resembles the mounting of the tool holder in a
planing machine.
In the special work for which this machine is intended finely pointed tools are
required, and it is undesirable that these points should be allowed to drag upon
the work during the return movement of the table.
To raise the tool out of the way when the cut is completed, and to restore it to
the working position when the return movement is completed I apply a lever S
with which as the travel of the table is completed one of the adjustable stems T. T. T,
fixed for the purpose on the bearings B¹ comes into contact.
When on the completion of the slow movement of the table A lever S comes
against a stem it causes the tool carrier R, to turn about the axis Q1 compressing
the coil spring U until presently the shoulder V on the tool holder passes the nose
of the locking pawl W. The spring U which operates against the pawl as well as
against the tool holder causes the pawl to drop in behind the shoulder V to sustain

page_text: the tool holder. The pawl remains in position and holds the tool clear of the work
during the return movement of the table. On the completion of this movement
another stem T comes against the lever S and the lever is moved by it in a direction
contrary to that of the previous motion. The lever now presses the pawl W
Then the coiled
outwards until it clears the shoulder V upon the tool holder.
spring U moves the tool holder and returns the tool to its former position where it
remains throughout the next forward movement of the table.
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) A machine for cutting grooves on rollers for use in mills in which the roller
to be operated on is spanned by a bridge carrying two or more tool boxes each with
its tool capable of independent adjustment and of being set to groove accurately
one arc of the circumference of the roller substantially as described.
(2) The mechanism for rotating the roller to and fro consisting of a fixed rack
operating gear wheels and axes carried upon the traversing table substantially as
described.
(3) A machine substantially as described and shown by the annexed drawings for
cutting grooves on rollers for use in mills, and either with or without the mechanism
which lifts the tool at the end of the cut and replaces it after the return of the
table.