IMPROVEMENTS IN OR RELATING TO THE BENDING OF ANGLE IRONS AND THE LIKE AND APPARATUS THEREFOR to be as follows:-
Year: 1884

page_text: I CHARLES WICKSTEED of Kettering Engineer do hereby declare the nature
of the said invention for. "IMPROVEMENTS IN OR RELATING TO THE BENDING
OF ANGLE IRONS AND THE LIKE AND APPARATUS THEREFOR to be as follows:-
"
This invention relates to improvements upon the invention described in my
former patent N° 2791 of 1883.
I found difficulties in practice with the former rolls first in keeping the angle
iron quite square and second in keeping the one flange in the same plane with the
ring and the other at right angles to the plane.
To overcome the first difficulty in bending an internal ring I prefer to make the
angle of the inside roll more acute (say about 25° more or less) and in addition to
add another adjustable working flange or face to the roll which will press upon
the inside face of the angle iron, which when properly set keeps the angle iron
square.
To overcome second difficulty I employ means for applying what may be termed
end pressure to the rolls (side pressure to the ring) in addition to the ordinary
pressure by which means I get over the difficulty and produce the true ring if
desired, or where an alteration of the angle is required I can effect that also.
In carrying my invention into practice when bending an external ring I place
upon the extended boss of the roll (with a nut to secure and adjust it) an additional
working face bearing upon the inside face of the angle iron which is so set as to
keep the angle iron square. If set up too much this roll would make the angle
too obtuse, and if withdrawn too far the angle would be acute.
I form the inside roll in such a manner that I can regulate its position on the shaft.
A set screw can be inserted through the closed end of the extended boss of the roll
so as to bear against or enter the end of the shaft, by screwing which in or out the
position of the roll can be adjusted and thus regulate the end pressure.
The production of the true ring therefore depends upon the proper relative
positions of the two portions of the two portions of the inside roll with each other,
and also with, the other or outside rolls, so that the same result could be obtained
if the outside rolls were adjustable and the inside rolls relatively fixed.
In bending outside rings the same means are employed with the requisite
modifications.
It is evident that the details of this invention can be considerably modified
without departing from the spirit of it.
0011
L T
100

page_text: "
I CHARLES WICKSTEED of Kettering, Engineer, do hereby declare the nature
of this invention for "IMPROVEMENTS IN OR RELATING TO THE BENDING OF
ANGLE IRONS AND THE LIKE AND APPARATUS THEREFOR 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 improvements upon the invention described in my
former patent N° 27918s.
I found difficulties in practice with the former rolls first in keeping the angle
iron quite square and second in keeping the one flange in the same plane with the
ring and the other at right angles to that plane.
To overcome the first difficulty in bending an internal ring, I prefer to make the
angle of the inside roll more acute (say about 25° more or less) and in addition to
add another and adjustable working flange or face to the roll which will press upon
the inside face of the angle iron, which when properly set keeps the angle iron
square.
To overcome the second difficulty I employ means for applying what may be
termed end pressure to the rolls (side pressure to the ring) in addition to the
ordinary pressure by which means I get over the difficulty and produce the
true ring if desired, or where an alteration of the angle is required I can effect
that also.
In carrying my invention into practice when bending an internal ring I place
upon the extended boss of the roll (with a nut to secure and adjust it) an additional
working face bearing upon the inside face of the angle iron which is so set as to
keep the angle iron square-If set up too much this roll would make the angle too
obtuse and if withdrawn too far the angle would be acute I form the inside roll in
such a manner that I can regulate its position on the shaft. A set screw can be
inserted through the closed end of the extended boss of the roll so as to bear against
or enter the end of the shaft by screwing which in or out the position of the roll
can be adjusted and thus regulate the end pressure.
The production of the true ring therefore depends upon the proper relative
positions of the two portions of the inside roll with each other, and also with the
other or outside rolls; so that the same result could be obtained if the outside rolls
were adjustable and the inside rolls relatively fixed.
In bending outside rings the same means are employed with the requisite
modifications.
In the accompanying drawings which represents the rolling of an inside ring or
curve A is the single roll and B one of the double rolls the former A is free to
revolve upon its shaft D while the latter B is driven by its own shaft.
It will be observed that the roll A has an extended Boss A' screw-threaded
outside for a portion of its length upon which screws the cap E the position of
which upon the boss is adjustable but can be fixed by the set screw F.
The cap E is turned down for a portion of its length to receive the supplemental
roll or collar G which should be a nice fit upon the cap but by preference is not
quite tight upon it, in order that it may adapt itself to the requirements of the
rolling the dimensions at G¹ being larger than that of the roll A. it is desirable
that some slip should be provided for.
Through the cap E passes the regulating screw H which screws into the cap and
bears with its end H upon the end of the shaft D it therefore follows that by
screwing in this screw H the roll A with all its fittings will be drawn towards the
end of the shaft.

page_text: The flange or projecting portion G¹ of the collar G bears upon the interior of the
web C of the angle iron and is bevelled to a convenient angle for this purpose as
shown.
It will thus be seen that the movement of the angle iron is practically controlled
on all sides, the main faces of the rolls A and B controlling any outward tendency
of the webs C. C¹ the return faces A and B controlling the edges of the webs;
and the flange G¹ controlling the inside of web C¹.
The ring or curve being formed in the direction shown in dotted lines.
By adjusting the collar G the web C¹ may either be forced to an obtuse angle
with the web C or allowed to make an acute angle as is its natural tendency, or
be kept quite square.
By putting on end pressure through screw H, web C, which has a natural
tendency to rise at its edge out of the plane as shown in dotted lines I. I. I. may
be kept perfectly flush or even be pushed in, in neither of which operations is it
found to alter its relative position to web C¹.
In setting the rolls for a certain size of angle iron roll A is first screwed down
on the angle iron, then collar G. is set up till it touches the web C¹. The bar is
then rolled in the ordinary way the end pressure being put on by screw H. during
the process as required.
No adjustment is necessary for a second angle of the same size and sweep.
In bending outside rings the same means are employed with the requisite
modifications; the supplemental roll or collar G being of course placed upon or in
connection with one or more of the double rolls B, so as still to bear upon the
inside face of the web.
I have herein described a form of the apparatus which I have constructed and
found to work satisfactorily and believe to be most suitable for my purpose but
I do not wish it to be understood as confining myself to these exact details as it is
manifest that they may be considerably modified while the same result may still
be attained.
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 or apparatus for bending angle iron the combination with roll A
of the supplemental roll or collar G which controls one web of the angle iron upon
its inner face substantially as set forth.
2. In a machine or apparatus for bending angle iron, the combination, with roll A.
of the double purpose regulating cap E whereby the position of roll A upon its
shaft may be adjusted and the relative positions of roll A and collar G regulated
substantially as set forth.
3. In a machine or apparatus for bending angle iron the combination with fixed
double rolls B of a single roll A capable of adjustment endwise of its shaft and
relatively to the said double rolls substantially as set forth.
4. In a machine or apparatus for bending angle iron rings or bends with outside
webs the combination with a single fixed roll A of double rolls B one or more of
which is adjustable upon its shaft and provided with a supplemental roll or collar G
substantially as specified.
Dated this 28th day of October 1884.