Improvements in Machines for Bending or Bevilling Angle and other Metal Bars.
Year: 1886

page_text: PROVISIONAL SPECIFICATION.
Improvements in Machines for Bending or Bevilling Angle
and other Metal Bars.
1, ROBERT ELLIOT DAVIS and JAMES PRIMROSE, both of Etna Iron Works, Bangor
Road, Leith in the County of Edinburgh, do hereby declare the nature of this
invention to be as follows:-
According to this invention L, T. Z and other metal bars are bevilled or bent to a
different angle to that originally given them by being passed between or over three
rollers, whereof two, at least, are adjustable. Two of the rollers are mounted on
horizontal or approximately horizontal axes and grasp a part of the bar, usually one of
its limbs or members. The axis of one or each of these rollers is adjustable vertically
and end wise to allow for different thicknesses and sections of bars and one of the
rollers is formed in sections, one or more of which can be removed to admit narrow
bars of Z section. These rollers are, by preference conical, and one is provided with
a collar or projection to press against the side, edge or angle of the bar.
It
The third roller presses against the bar by its end or face and is mounted on an axis
carried in an adjustable frame. This frame is hinged, pivotted or guided in such a
way that the third roller can be set at any angle within limits to the other two.
obtains a bearing near its periphery against one of the above mentioned pair of rollers.
By means of a curved rack and pinion, or equivalent device the adjustment can be
made while the machine is running, and the angle given to the bar be different at
different parts of its length. By means of a pointer and a graduated are, disc or scale
the workinan can know what angle he is giving to the bar, and by means of another
index, geared to the rollers, he can tell upon what part of the bar he is operating.
The bar is led in and out of the machine by feed rollers driven in any convenient
It is convenient to combine in one machine two sets of bending rollers, one set
arranged to open bars to a wider angle, than 90° and the other set to shut thein.
The machine is mounted upon wheels, and is driven by a motor fixed on it, or by
belt manual power or other means.
way.
LT100
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Bending or Bevelling Angle and
other Metal Bars.
We, ROBERT ELLIOT DAVIS, and JAMES PRIMROSE, both of Etna Iron Works,
Bangor Road, Leith, in the County of Edinburgh, 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:-
According to this invention LTZ and other metal bars are bevelled or bent to a
different angle which may be either greater or less than that originally given them by
being passed between or over three rollers, whereof two, at least, are adjustable. Two of
these rollers are mounted with their axes horizontal or approximately horizontal, and
grasp a part of the bar, usually one of its limbs or members. The axis of one-or each
of these rollers is adjustable vertically and end wise to allow of different thicknesses
and sections of bars, and one of the rollers is formed in sections, one or more of which
can be removed to admit narrow bars of Z section. These rollers are by preference
conical, and one is provided with a collar or projection to press against the side, edge,
or angle of the bar. The third roller presses against the bar by its end or face, and is
mounted on a shaft carried in an adjustable frame. This frame is hinged, pivotted,
or guided in such a way that the third roller can be set at any angle within limits
the
other two. It obtains a bearing near its periphery against one of the above mentioned
pair of rollers. By means of a curved rack and pinion, or equivalent device, the
adjustment can be made while the machine is running, and the angle given to the bar
be different at different parts of its length. By means of a pointer and a graduated
are, disc, or scale, the workman can know what angle he is giving to the bar; and, by
means of another index, geared to the rollers, he can tell upon what part of the bar
he is operating. The bar is led in and out of the machine by feed rollers driven in
any convenient way. It is convenient to combine in one machine two sets of bending
rollers, one set arranged to open bars to a wider angle than 90°, and the other set to
shut them. The machine is mounted upon wheels, and is driven by a motor fixed on
it, or by a belt, manual power, or other means.
Referring to the accompanying sheet of drawings on which there is illustrated a
machine according to our invention for bending or bevelling angle and other metal
bars;
Fig. 1 is an elevation of the delivery side of the machine.
Fig. 2 is a vertical section on the line 1-2 of Fig. 4.
Fig. 3 is an end view.
Fig. 4 is a plan in which certain parts are omitted for sake of clearness; and
Fig. 5 is a plan partly in section showing one of the adjustable rollers with its
quadrants and the adjacent frames in which the quadrants slide.
The machine contains two sets of bending or bevelling rollers, each set_having_its
own office. The set seen to the right in Fig. 1 is designed to open L, T, Z and other

page_text: sections of bars, while the set to the left is designed to shut bars of similar sections
or to reduce the angle between the members or flanges.
The rollers of each set are three in number; those of the first or right hand set aro
marked A, B, and C. These are seen to the left in Fig. 2. The two rollers B, C,
are conical in shape, and are mounted on horizontal and parallel shafts, which are both
driven from the first motion shaft of the machine. As illustrated, the first motion
shaft 1 forms the crank-shaft of a steam engine, and conveys its motion to the shafts
of the rolls through the pinion 2, the wheel on the second motion shaft 4, and the
pinion 5. This pinion gears with the spur wheel 6 on the shaft of the roller C, and
its motion is transmitted to the shaft of the roller B by the spur wheel 7. The third
roller of the set is marked A, and runs loose; its axis is capable of being moved bodily
in a circular arc, the centre of which is at a (Fig. 2.). The roller C is made in two
parts, of which one can be removed when it is desired to bevel narrow bars of
Z section; this roller has likewise a collar or shoulder which forms a hearing or
guiding edge for the angle of the bar under treatment. This roller can be adjusted
both vertically and laterally to accommodate it to different widths of bars. The vertical
adjustment is effected by raising or lowering the bearings 8, 8 of its shaft by means
of the screws 9, 9, worm-wheels 10, 10, worms 11, 11, and hand-wheel G. The lateral
adjustment is effected by moving the roller end wise of its shaft by means of the screw
and band-wheel 12.
The two rollers B and C firmly grasp one member or flange of the bar under
treatment, while the third roller A bends another member or flange outward to the
required angle. To enable the attendant to place the roller A in the position to give
the desired angle to the bar, its shaft is carried in a bearing in a cross-piece A¹ secured
to two toothed quadrants F, F, which are guided in slides in the framing (Fig. 5.).
These quadrants are adjusted by the pinions E, E on the shaft 13 which can he
rotated by the hand-wheel D through the intermediary of the wheel and pinion 14, 14.
In order that the workman may know to what extent he is altering the original angle
of the bar, there is a dial plate I on the shaft 13 graduated on its face, and moving
past a fixed pointer 13*. A second graduated wheel or index H shows the progress
of the bar between the rollers. The finger of this dial is driven from the shaft of the
roller B by a worm 15 gearing with a worm wheel on a vertical shaft 16; this shaft
drives a horizontal shaft 17 which through bevel gear drives the hand on the dial H.
The two dials I and H indicate to the workman the amount by which the angle is
altered at different parts of a bar.
The bar is presented to and forced into the grip of the rollers B and C by the
feed rollers and V and passes through the machine in the direction of the arrows.
The former of these rollers (U) is driven through the train of wheels 7, 18, 19,
the first of which is on the shaft of B. The upper roller V is not driven by gearing
in the example shown in the drawings, and can be raised to admit the bar. To this
end the shafts on which the upper rollers at the feeding side of the machine are
fixed are independently carried in bifurcated sliding bearings 20, 20, which can be
raised and lowered by means of the levers 21, 21. These levers 21 may each be
provided with a screw to force down the bearings if required. The bar is delivered
from the machine through another pair of rollers X and Z, both of which run idly.
The upper delivery rollers X, X, are fixed on shafts carried in bifurcated sliding
bearings that are adjustable vertically by means of screws 22, 22, as clearly shown in
Fig. 1. Each pair of lower rollers, at the feed and delivery sides of the machine, is
carried by a common shaft. The lower feeding rollers U, U¹, are positively driven
through the wheel 19 and their common shaft.
Bars requiring to be "shut" are treated in the left-hand set of rollers K, L, M,
(Fig. 1.) With the exception of these three rollers and of the gear wheels which
drive them, the mechanism on this side of the machine is practically the same as on the
side hereinabove described. Corresponding parts are correspondingly lettered and
figured, E being the counterpart of E, l' of 1, H2 of HI, and so on. It will be noticed
that the rollers Land K are more conical than B, C, to permit of the bar being shut
to an acute angle, and that the roller M is shown with a rounded or beaded edge

page_text: running in a groove or path in the roller L. This arrangement prevents the roller M
springing away from its work.
The roller may be made in two parts as indicated by dotted lines (Fig. 2), one of
such parts being removable for rolling bars of Z section.
The machine is shown driven by a steam engine. This engine may be made to
reverse, so as to pass the bar in either direction, and it may also be constructed to
propel the machine along the rails if desired.
Having now particularly described and ascertained the nature of the said invention,
and in what manner it is to be performed, we declare that what we claim is
In a machine for bending or bevelling angle and other metal bars:-
1. The three rollers A, B, and C, arranged as described, two being mounted with
their axes parallel, and the third being capable of adjustment in relation to the others
in the manner set forth for the purpose specified, whether the roller C be made with
a removable part or not.
2. The three rollers K, L, and M, arranged as described, two being mounted with
their axes parallel, and the third being capable of adjustment in relation to the others,
and being supported by one of them in the manner set forth for the purpose specified,
whether the roller L be made with a removable part or not.
3. The combination and arrangement as described of three rollers such as A, B,
and C, or K, L, and M, with feed rollers such as U and V, or U¹ and V, and means
for imparting positive driving motion to one such feeling roller as set forth.
4. We also claim our improved machine as hereinabove described with reference to
the drawings for the purposes specified.
Dotad this 5th day of Mondd 1007