Improvements in Vertical-roll Metal Bending and Rolling Mills.
Year: 1892

page_text: Date of Application, 5th July, 1892
Complete Specification Left, 4th Apr., 1893-Accepted, 6th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Vertical-roll Metal Bending and Rolling Mills.,
We, AARON JOHN PARDON, of 5, Regent Place, Shawlands, in the County of
Renfrew, North Britain, Commercial Traveller, and ANDREW LAING, of Oswald
Gardens, Scotstounhill, in the County of Renfrew, North Britain, Engineer, do
hereby declare the nature of this invention to be as follows, that is to say :-
Our said invention has for its object to improve the construction of vertical-roll
metal bending and rolling mills, and to facilitate the introduction and removal of
articles operated on, and the removal or changing of the rolls themselves.
A mill as made with our improvements comprises the usual three vertical rolls,
but the gearing by which they are made to rotate is all arranged below them in a
suitable bed frame; and this gearing, which may consist of spur pinions and wheels,
or of bevil wheels, or of worms and wormwheels, may be arranged for driving all
three or only two of the rolls. Two of the rolls are, as usual arranged to act on
the convex side of the plate or article being bended or rolled, and the third roll to
act on the concave side.
Various parts of our improved mill are susceptible of modification but in all
modifications the top bearing of the third roll is fitted in an arm jointed to the
frame of the machine or to a movable block, so that by means of a worm and worm-
wheel or equivalent device, it can be turned up to be quite clear of the roll to
allow of the article operated on or of the roll itself being hoisted out of the
machine. The brasses of the top bearing of the roll remain on the journal, being
on their outer and inner sides curved concentrically with the joint of the arm.
For the operations of the mill it is necessary to provide means for varying the
space between the third roll and the other two rolls, and for this purpose the
mechanism may be such as to adjust the third roll the positions of the others being
unalterable, or such as to adjust the two rolls, the positions of the third roll being
unalterable, or both kinds of adjusting mechanism may be combined.
In one modification of mechanism for adjusting the third roll, the top arm is
jointed to a block movable in horizontal guides in the upper part of the framing,
and the lower bearing of the roll is fitted in a block similarly movable in the bed
frame. The upper and lower blocks extend sufficiently backwards to allow of their
being acted on by horizontal screw spindles arranged in front of their back parts,
and capable of being turned simultaneously by means of wormwheels and worms
provided with driving and clutch connections. In a second modification eccentrics
are arranged to act on the upper and lower blocks which move the third roll
inwards or outwards; and in a third modification levers are substituted for the
screws or eccentrics.
When the two rolls are made adjustable their upper and lower bearings are fitted
in blocks which are held by horizontal movable arms centered on a common vertical
axis so as to keep the pinions at the bottoms of the roll properly in gear with their
driver. The bearing blocks are within open blocks or small frames movable in
guides in the framing these frames having fixed to them, screw spindles which pass
through internally screwed sleeves held in the framing and turned by worm and
wormwheel gearing.
The gearing may be arranged to drive only the two rolls or to drive all three
rolls, the pinions of the two rolls being arranged to gear with a pinion on a separate
shaft or with a pinion on the driving shaft of the third roll. The driving gearing
is applied to short vertical shafts held in bearings in the bed frame, these shafts
being made with enlargements at their upper ends, and square or equivalent sockets
are formed in the enlargements to receive bottom journal ends or necks of the.rolls.

page_text: which necks are shaped to fit the sockets. The third roll may be made with a
long neck or shaft extending down through one or more wheels of the driving
gearing.
In cases in which the two rolls are not adjustable their top bearings are fitted in
a bracket or pair of brackets bolted or otherwise secured to the main framing and
easily removable when it is required to remove either or both rolls.
The rolls. may be plain. for simple bending operations; or they may be
.corrugated for rolling corrugated cylindrical shells for furnaces or for other
purposes.
Dated this Fourth day of July 1892.
EDMUND HUNT,
Applicants' Agent.
COMPLETE SPECIFICATION.
Improvements in Vertical-roll Metal Bending and Rolling Mills.
We, AARON JOHN PARDON, of 5, Regent Place, Shawlands, in the County of
Renfrew, North Britain, Commercial Traveller, and ANDREW LAING, of Oswald
Gardens, Scotstounhill, in the County of Renfrew, North Britain, Engineer, do
hereby declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement, that is to say :-
Our said invention has for its object to improve the construction of vertical-roll
metal bending and rolling mills,. and to facilitate the introduction and removal of
articles operated on, and the removal and changing of the rolls themselves.
A mill as made with our improvements comprises the usual three vertical rolls,
but the gearing by which the rolls are made to rotate is all arranged below them in
a suitable bed frame; and this gearing, which may consist of spur pinions and
wheels, or of bevil wheels, or of worms and wormwheels may be arranged for
driving all three or only two of the rolls. Two of the rolls are, as usual arranged
to act on the convex side of the plate or article being bended or rolled, and the
third roll to act on the concave side.
Various parts of our improved mill are susceptible of modification, but in all
modifications the top bearing of the third roll is fitted in an arm jointed to the
frame of the machine or to a movable block, so that it can be turned up to be quite
clear of the roll to allow of the article operated on, or of the roll itself being
hoisted out of the machine.
And in order that our said invention and the manner of performing the same
may be properly understood we hereunto append four sheets of explanatory
drawings to be hereinafter referred to, and representing various modifications of our
improved machinery.
Figure, 1, Sheet, 1, of the drawings is a side elevation of one modification of our
improved mills, and Figure, 2, is a plan of the upper part of the same.
Figures, 3, and, 4, Sheet, 2, are a side elevation and plan of the upper part of a
second modification..
.
Figure, 5, Sheet, 3, is a side elevation of a third modification, and Figure, 6, is
a.plan of the upper part of the same.
Figure, 7, is a side elevation of a fourth modification and Figure, 8, is a plan of
the upper part of the same.
In these drawings the same reference letters and numerals are used to mark the
same or like parts wherever they are repeated..
In the modification shown in Figure, 1, there is a massive cast-iron standard, A,
of box-like horizontal, section, made in two (or it might be more) parts bolted
together and formed with a sole, A 1, which sole with a lower frame, A. 2, connected
to it by short vertical frame pieces, A 3, forms a bed frame within and upon which
is arranged the driving gearing. The two rolls, B, for acting on the convex side
1

page_text: of the plate or article being operated on and which are indicated by dotted circles
in Figure, 2, are placed near the standard, A, being held in upper bearings, B 1,
bolted to the standard, and easily removable for hoisting out or introducing the
rolls. The lower journals of the rolls, B, are held in bearings in the sole, A 1, and
are made with projecting and square parts entered into sockets in driving shafts, B 2,
below. The third roll, C, has its lower journal in a bearing in a block, C1 (indicated
by dotted lines in Figure 1) fitted to slide in horizontal guides in the sole, A 1, and
the upper journal is in a bearing, C 2, in the outer end of an arm, D, part of which
as seen in plan is in the shape of an open frame fitted between vertical flanges, A 4,
at the top of the standard, A. The back part of the arm or frame, D, has jointed
to it a block, D 1, on which it can be turned up so as to lift its front end off the top
bearing, C2, of the third roll, C, the bearing and the parts of the arm enclosing it
being shaped concentrically with the axis of turning movement of the arm, so that
when turning up the arm leaves the bearing on the roll journal. The turning up or
down of the arm, D, is effected by means of wormwheel teeth, D2, on the back of
the arm, these teeth having in gear with them a worm, E, at the upper end of a
shaft, E 1, having a handwheel, E 2, at its lower end. The arm, D, is balanced by
a weighted lever, D3, fixed to it through an opening in one of the flanges, A 4.
For the operations of the mill it is necessary to provide means for varying the
space between the third roll, C, and the other two rolls, B, and for this purpose the
mechanism may be such as to adjust the third roll, C, the positions of the others, B,
being unalterable, or such as to adjust the two rolls, B, the position of the third
roll, C, being unalterable, or both kinds of adjusting mechanism may be combined.
In the modification shown on Sheet, 1, of the drawings the third' roll, C, is
adjustable. The block, D 1, to which the arm, D, is jointed has tapped through it
a screw spindle, F, which has a front bearing in a bracket, F 1, formed on the
standard, A, and which has fixed on it a worm wheel, F 2, having in gear with it a
worm on a vertical shaft, F 3. This vertical shaft, F 3, has at its lower end a worm
gearing with a wormwheel, F 4, fast on a screw spindle, F 5, tapped through a block
or crosshead, F 6, which is connected by side rods, F 7, to the bearing block, C 1, of
the lower journal of the third roller, C. These parts, which are indicated by dotted
lines in Figure, I, are for moving the lower bearing, C 1, simultaneously and equally
with the arm, D, and upper bearing, C 2. The worm shaft, F 3, can be turned by
power from the first motion shaft, S, of the machine, there being on the worm shaft
reversed bevil pinions, F 8, capable of engagement by a clutch movable by a hand
lever, F 9, the bevil pinions gearing with a bevil pinion on a short horizontal shaft
driven by means of a pulley and belt, indicated by dotted lines.
The main driving gearing comprises a first-motion shaft, S, having on it fast and
loose pulleys, G, for open and crossed driving belts, and a bevil pinion, G.1, which
gears with a bevil wheel, G 2, on a vertical shaft having on it a pinion, G 3, gearing
with a spurwheel, G4, on a second vertical shaft, G 5. The shaft, G 5, has on it a
pinion, G 6, gearing with a spurwheel, G 7, on a third vertical shaft, G 8, which has
on it a long pinion, G 9, gearing with pinions, B 3, on the shafts, B2, which drive
the two rolls, B.
In the second modification, shown on Sheet, 2, the top arm, D, is moved inwards
and outwards by means of an eccentric, H, fitted in a large cylindrical eye formed
at the back of the arm, D, the eccentric also serving as the centre on which the arm
is turned up. The eccentric, H, is fixed on a shaft, H 1, carried in blocks fitted to
slide in vertical slots in the flanges, A 4, at the top of the standard, A, and having
fixed on one end of it a sector, H 2, made with wormwheel teeth with which there
gears a worm on the vertical shaft, F 3. Similar parts (H, H1, H2) are provided
below for shifting the lower bearing block of the roll, C, but are not shown. The
main driving gearing of this modification may be the same as that of the first
modification; or it may be varied if desired provided that it is arranged to act on
the lower ends of the rolls.
In the third modification, shown on Sheet, 3, cranked levers, J, are arranged for
moving the third roll, C, towards or from the rolls, B. The upper levers, J, have

page_text: fulcrum pins, J 1, turning in blocks capable of sufficient vertical movement in guide
slots in the standard, A, to allow the eye, J 2, of the short arm which is jointed on
trunnions fixed in the arm, D, to move horizontally with that arm. The lower
levers, J, are arranged in a similar manner, but so as to act on links, F 7, connected
to the lower bearing, C 1, of the third roll, C. The upper levers, J, are inverted
as compared with the lower ones, and both pairs of levers are acted on by a vertical
shaft, J3, having right-hand and left-hand screw threads at its upper and lower
parts to act on swivelling crossheads, J 4, jointed to the levers, J, the screwed parts
of the shaft working through internally screwed eyes in the crossheads. The
vertical shaft, J 3, is itself turned by means of a wormwheel, J 5, on it, acted on by
a worm J 6, driven through reversible gearing. The main driving gearing shown
in Figure, 5, is the same as that shown in Figure, 1, and hereinbefore described, but
placed relatively to other parts of the machine as though shifted through a right
angle.
In the fourth modification, shown on Sheet, 4, the third roll, C, is held in a
stationary position, the two other rolls, B, being made movable towards or from the
third roll. The upper and lower bearings of the rolls, B, are fitted in blocks, K,
which are held by horizontally movable arms, L (indicated by dotted lines in
Figure, 8) centered on a common vertical axis, so as to keep the pinions, B 3, at the
bottoms of the rolls properly in gear with their driver, G 9. The bearing blocks, K,
are within open blocks or small frames, K1, movable in guides formed in the
framing, these frames, K 1, having fixed to them screw spindles, M, which pass
through internally screwed sleeves held in the framing and turned by means of
wormwheels, N, fixed on them and acted on by worms on two vertical worm
shafts, E 3, which are driven as in the modifications previously described.
The main gearing, may be arranged to drive only the two rolls, B, as in the
modifications shown in the drawings or to drive all three rolls. The rolls may be
plain for simple bending operations; or they may be corrugated for rolling corru-
gated cylindrical shells for furnaces or for other purposes.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The combinations of parts constituting the improved vertical-roll metal bending
and rolling mills substantially as the same are herein before described and shown in
the acccompanying drawings.
2. In vertical roll mills fitting the top bearing of the third roll in an arm arranged
for being turned up clear of the roll substantially as and for the purposes hereinbefore
described.
3. In vertical-roll mills making the top bearing of the third roll removable in
combination with the arrangement of the gearing for driving the rolls below them
substantially as hereinbefore described.
Dated this First day of April 1893.
EDMUND HUNT,
Applicants' Agent.