An Improved Machine for Straightening and Bending Angle and Tee Iron or Steel and other Sections after Manufacture.
Year: 1891

page_text: Date of Application, 21st Mar., 1891
Complete Specification Left, 12th Dec., 1891-Accepted, 16th Jan., 1892
PROVISIONAL SPECIFICATION.
An Improved Machine for Straightening and Bending Angle and
Tee Iron or Steel and other Sections after Manufacture.
I, WILLIAM PATTEN, of 130 Studley Road, Upton Lane, Forest Gate, in the
County of Essex, Mechanic, do hereby declare the nature of this invention to be as
follows: :-
This invention relates to improvements in the methods of straightening and
bending internal and external, of angle, tee, or other sections of iron or steel bars
plates or tyres, after manufacture, with or without furnacing. The machine
consists of 3 rolls, 2 of which are placed in the same horizontal plane, and parallel
to each other, with a slight space between to allow dust or dirt to fall out of the
way.
The third roll is placed exactly above the 2 lower ones, parallel to them and
having its vertical axis exactly between the 2 lower rolls; and in a similar position
as one barrel would be resting on two below it. These three rolls are mounted at
their bearings, at each end in suitable cast or wrot iron framing, and the top roll
working in guides is capable of being raised or lowered by a vertical screw at
each end, at the will of the workman in charge of machine; and by this means
any material passed between the top and bottom rolls when revolving, is bent to
any required curve according to the height of top roll above the 2 lower rolls.
The 2 bottom rolls revolve in the same direction, and the top roll in the opposite
direction to the bottom rolls, and this is effected by pulleys or belting from the
shop shafting, or by an independent engine connected to machine, as the case
may be.
It will now be seen that the machine above described is exactly that of an
ordinary plate bending machine, and is made of rolls of such a length, that it can
be used for bending plates of any ordinary commercial size, without interfering
with the parts used for straightening and bending angles, tees etc. Say rolls
6 or 8 feet long, by diameters suitable to work required.
Now in order to effect an internal bending of angle, or tee iron or steel, a
groove is turned in top roll of a similar depth to the web of the particular section
of angle or tee to be worked for instance, for an angle iron having a 3" inch
web, a groove is turned 34" inches deep in the top roll assuring the thickness of web
to be inch the groove is turned "inch full in width.
To make the internal bend, (viz. web inside) the angle iron is introduced to the
machine in such a manner, that the web enters the groove in top roll, which is
turned to admit it, and the flange or table of angle iron passes between the top and
bottom rolls (in the same manner as a plate or bar would do without a web) when
the machine is in motion, and the angle iron is bent while passing through the rolls
to and fro (which it is capable of doing) the top roll being depressed by the
screws, moved by the man in charge (as above described until the necessary curve
or bend is obtained.
For external bending, the exact opposite of above, as regards the turned grooves
in rolls is effected, by the grooves being turned in the 2 bottom rolls, exactly
opposite each other, so that taking the same section of angle iron as above, the
3 inch web would pass through the grooves in 2 bottom rolls, and the flange or
table between top and bottom rolls; and by depressing the top roll as far as
required, the bend is effected.
It will readily be seen that in rolls of 6 or 8 feet in length, several grooves
could be turned or cast in top and bottom rolls, to suit various commercial sections
of angle, tee, H and other iron or steel; and that so long as the grooves in top

page_text: and bottom rolls do not come exactly opposite one another, they will not deter the
bending of the flanges.
For straightening angle sections, concave, and convex, right angle grooves, are
turned in one end of the 3 rolls, that is to say a concave V is turned in top
roll, and a convex V is turned in the 2 bottom rolls exactly under the top V, so
that on the top roll being depressed on angle bar when rolls are in motion, a
bending takes place; and to effect the opposite bending, a convex Vris turned in
top roll and a concave ✓ is turned in 2 bottom rolls; so that to straighten an
angle bar it is simply run through the 2 sets of grooves, and all the lumps or
bends are taken out as required.
I, William Patten, especially claim the various turned grooves, to be my own
invention, for bending angle, tee, and other sections of iron or steel, also
straightening same after manufacture.
Dated this 21st day of March 1801
WILLIAM PATTEN.
COMPLETE SPECIFICATION.
An Improved Machine for Straightening and Bending Angle and
Tee Iron or Steel and other Sections after Manufacture.
1, WILLIAM PATTEN, of 130 Studley Road, Upton Lane, Forest Gate, in the
County of Essex, Mechanic, 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 :-
This invention relates to improvements, in the methods of straightening, and
bending internal and external of angle, tee, or other sections of iron or steel bars,
plates, or tyres after manufacture, with or without furnacing; accompanying
drawings lettered A, B, C, D.
The machine consists of 3 rolls, 2 of which are placed in the same horizontal
plane, and parallel to each other, with a suitable space between to allow them to
revolve freely; the third roll is placed exactly above the 2 lower ones, parallel
to them and having its axis exactly between the 2 lower rolls; and in a similar
position to 1 barrel resting on 2 below it.
These 3 rolls are mounted at their bearings, at each end in suitable cast or wrot
iron framing, and the top roll working in guides, is capable of being raised or
lowered by a vertical screw at each end, at the will of the workman in charge of
machine and by this means any material passed between the top and bottom rolls
when revolving, is bent to any required curve according to the height of top roll
above the 2 lower rolls.
:
The 2 bottom rolls revolve in the same direction, and the top roll in the opposite
direction to the bottom rolls, and this is effected by pulleys or belting from the
shop shafting, or by an independent engine connected to machine, as most
convenient.
It will now be seen that the machine above described is similar to an ordinary
plate bending machine, and is made of rolls of such a length that it can be used
for bending plates of any ordinary commercial size, without interfering with the
parts used for straightening and bending angles, tees, etc., viz. rolls 6 or 8 feet long,
by diameters suitable for work required.
Now in order to effect an internal bending of angle or tee iron or steel, a
groove A as in drawing, is turned in top roll, of a similar depth to the web of the
particular section of angle or tee to be worked; for instance for an angle iron
having a 3" inch web, a groove A is turned 28 inches deep in the top roll, assuming
the thickness of web to be inch, the groove is turned inch full in width.
To make the internal bend, (viz. web inside) the angle or tee is introduced into
the rolls in such a manner that the web enters the groove A in top roll, and the
flange or table of angle or tee passes between the top and 2 bottom rolls (in the

page_text: same manner as a plate or bar would without a web) when the machine is in motion,
and the angle or tee iron is bent while passing through the rolls to & fro (which it
is capable of doing) the top roll being depressed by the screws moved by the man
in charge (as above described) until the necessary curve or bend is obtained.
For external bending, the exact opposite of above, as regards the grooves in rolls
is effected by the grooves B being turned in the 2 bottom rolls, exactly opposite
each other, so that taking the same section of angle or tee as above, the 3" inch
web would pass through the grooves B B in 2 bottom rolls, and the flange or table
of angle or tee between 2 bottom and top rolls; and by depressing the top roll as
far as required, the external bend is effected.
It will readily be seen that in rolls of 6 or 8 feet long, several grooves could be
turned or cast in rolls to suit various commercial sections of angle, tee, H, and
other iron or steel; and that as long as the grooves in top and bottom rolls do not
come exactly opposite one another (viz. A and B grooves) they will not deter the
bending of the flanges.
For straightening angle sections, concave and convex, right angle grooves are
turned or cast in one end of the 3 rolls, that is to say a concave groove V is turned
in top roll, and a convex V is turned on 2 bottom rolls, and exactly opposite or
under top roll, so that on the top roll being depressed on angle bar when rolls are
in motion, a bending takes place; and to effect the opposite bending, a convex
V groove is turned on top roll, and a concave V groove is turned in 2 bottom rolls, so
that to straighten an angle bar, it is simply run through the 2 sets of grooves C
and D, and all the lumps or bends are taken out as required. Plates may be bent
in the usual way without interfering with grooves.
Having now particularly described, and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is,
1. A number of grooves in top roll of improved machine for internal bending of
angle, tee, or other sections of iron or steel after manufacture; the grooves
lettered A in drawing.
2. A number of grooves in the two bottom rolls of machine for external bending
of angle, tee, or other sections of iron or steel after manufacture the grooves
lettered B in drawing.
3. Two turned or cast convex, and concave grooves in top and bottom rolls, as
shewn in drawing and lettered C and D, for straightening angle iron or steel after
manufacture.
Dated this 10th dox of Danamban 1901
WILLIAM PATTEN.