IMPROVEMENTS IN MACHINERY FOR BENDING IRON, COPPER, BRASS, OR OTHER METALS INTO COMPLETE OR PART CIRCLES."
Year: 1872

page_text: LETTERS PATENT to William Henry Berry and Fred Berry, of the
Firm of Berry Brothers, of Leeds, in the County of York, Tool
Makers and Engineers, for the Invention of "IMPROVEMENTS IN
MACHINERY FOR BENDING IRON, COPPER, BRASS, OR OTHER METALS INTO
COMPLETE OR PART CIRCLES."
PROVISIONAL SPECIFICATION left by the said William Henry Berry
and Fred Berry at the Office of the Commissioners of Patents,
with their Petition, on the 7th August 1872.
We, WILLIAM HENRY BERRY and FRED BERRY, of the Firm of Berry
Brothers, of Leeds, in the County of York, Tool Makers and Engineers,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN MACHINERY FOR BENDING IRON, COPPER, BRASS, OR OTHER METALS INTO
COMPLETE OR PART CIRCLES," to be as follows:-
We employ three rollers, which are placed two in front and one in the
centre at suitable distances; these rollers are driven at the same time by

page_text: other. The iron or metal to be bent is first placed on the sides of the
two first rollers, the third roller is then by means of the slides brought
up to the inner side of the iron or metal, and the machine is set in
motion and stopped according to the bend required, or left to work the
circle.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Henry Berry and Fred Berry in the Great
Seal Patent Office on the 6th February 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
HENRY BERRY and Fred Berry, of the Firm of Berry Brothers, of Leeds,
in the County of York, Tool Makers and Engineers, send greeting.
of
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of August, in the year
our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said William Henry Berry and Fred Berry,
Her special licence that we, the said William Henry Berry and Fred
Berry, our executors, administrators, and assigns, or such others as
we, the said William Henry Berry and Fred Berry, our executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
MACHINERY FOR BENDING IRON, COPPER, BRASS, OR OTHER METALS INTO COMPLETE
OR PART CIRCLES," upon the condition (amongst others) that we, the said
William Henry Berry and Fred Berry, our exccutors or administrators,
by an instrument in writing under our, or their, or one of their
bands and seals, should particularly describe and ascertain the nature of
the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that we, the said William Henry Berry and Fred
Berry, do hereby declare the nature of our said Invention, and in what

page_text: manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, reference being had to
the accompanying Drawing, and to the letters and figures marked
thereon, that is to say:-
The said Invention relates to the employment of three rollers, which
arc placed two in front and one in the centre, at suitable distances apart;
these rollers are driven at the same time by means of worm wheels,
which are actuated by worms driven by a shaft; this shaft receives its
motion from the driving pulley shaft by means of a spur wheel working
into a pinion. The driving pulley shaft is driven by cross and open 1
belts, on which are fixed two loose and one fast pulley to enable a
reverse motion to be given to the rollers, which is obtained by means of
a sliding double belt guide. The worm wheels give motion to two of
the roller spindles and rollers, and to a sliding shaft, which works by
means of mitre wheels and a conical friction clutch the third or bending
roller; the mitre wheel fixed to the roller spindle is turned out conical,.
and the spindle is turned to fit the same, having a nut fitted on the
spindle below the wheel; also an india-rubber washer or any other
suitable spring is fixed on the spindle between the under side of the
mitre wheel and the nut to prevent over pressure. This mitre wheel
drives the spindle by means of the conical friction clutch formed by the
spindle and the wheel, and can be screwed up to any friction pressure
required by means of the nut. This friction clutch gear enables us to
vary the speed between the two first rollers and the third or bending
roller, according to the thickness of iron or metal to bend into circles or
part circles. The third roller being inside the circle will requiro to
traverse slower than the two other rollers acting on the outside of the
iron or metal, just in proportion as the inner diameter is less than the
outer. The third or bending roller has its bearings in slides, which can
be drawn backwards or forwards by means of screws actuated by nuts, to
which are fitted worm wheels worked by worms fixed on two shafts for
the purpose of working the bending roller in and out quickly.
We also employ rollers fixed on the top frame of the machine to carry
the iron or metal to be bent, which are so arranged that they can be set
to any convenient height or position.
Should angle or T iron be required to be bent with the web outside thic
circle, the rollers placed on the two first spindles being in two parts have

page_text: a washer placed between them, the thickness of the washer varying
according to the thickness of the angle or T iron, and a single roller,
double width, is placed on the third spindle; but should the machine be
required to bend rings with web inside the circle, two broad rollers are
placed on the two first spindles, and two narrow bending rollers on the
third spindle, with washer between; all the spindle ends are made
exactly of one size, so that the rollers can be changed from one to the
other. The iron or metal to be bent is first placed on the sides of the
two first rollers, the third roller is then by means of the slides brought
up to the inner side of the iron or metal and the machine set in
motion and stopped according to the bend required, or left to work the
circle.
But in order to enable our improvements to be better understood, wo
will proceed to describe the same by reference to the accompanying
Drawing, in which Figure 1 represents a sectional side view; Figure 2
a front elevation; and Figure 3 a plan of the bending machine.
Similar letters of reference are used in all the Figures to represent
similar parts.
A are rollers made in two parts for the purpose of bending angle
or iron, having a washer B placed between them; the thickness of
this washer B varies according to the thickness of the angle or T iron.
The rollers A are driven at the same time by means of worm wheels C,
which are actuated. by worms D driven by a shaft E; this shaft receives
its motion through the spur wheel F working in the pinion G; this
pinion is actuated by the driving pulley shaft H, which is driven by
cross and open belts by means of the fast pulley I; on the said shaft H
are fixed two loose pullies K to enable a reverse motion to be given to
the rollers A and A', which is obtained by means of the sliding double
belt guide J. The worm wheel C gives motion to the spindles L and L',
and rollers A; and the worm D' gives motion to the worm wheel M and
drives the sliding shaft M', working by means of the mitre wheels N
and N' the conical friction clutch O and spindle O', and consequently
the third bending roller A'; the mitre wheel N¹ is turned out conical to
fit the spindle O' at O, forming the conical friction clutch O, and having
a nut P fitted on the spindle below the wheel N', and also an india-
rubber washer P¹ or any other suitable spring is fitted on the spindle
between the under side of the wheel N and nut P; the wheel N drives
the spindle O' by means of the conical friction clutch O, formed by the

page_text: spindle O' and wheel N¹ turned to fit each other, and can be screwed up
to any friction pressure by means of the nut P. This friction clutch
gear enables the varying of the speed between the two first rollers A and
the third or bending roller A', according to the thickness of iron or metal
to bend into circles or part circles; the third roller A' being inside the
circle requires to travel slower than the two rollers A acting on the
outside of the iron or metal, in proportion as the inner diameter is less
than the outer; or the same friction clutch may be formed on any of
the rollers, or at the top end of the spindles, or on the sliding shaft and
worm wheel. The spindle O¹ of the bending roller A' has its bearings in
the slides Q, which can be drawn backwards or set forward by means of
the screws R actuated by the nut T, to which motion is given by means
of the worm wheels S and shafts S¹. The spur wheel U is for moving
the bending roller in or out quickly, which is done by removing the
handle V on to the spindle V¹.
The rollers W¹, W, Ws, and W', carry the iron to be bent, and are so
arranged that they can be set to any convenient height or position by
means of the set screws X, and the carrying rollers W and W³ are
fastened by lever set screws Y.
When angle or T iron is required to be bent with the web outside the
circle two rollers A are placed on the spindles Land L' and a single
broad roller A¹ on the spindle O'; but should the machine be required
to bend rings with the web inside the circle the rollers are reversed,
that is to say, the rollers A are placed on the spindle O¹, and the roller A¹
on the spindle L, and another broad roller on the spindle L'; all the
spindle ends are made exactly one size, so that the rollers can be
|ა changed from one to the other. The iron or metal to be bent is first
placed on the side of the rollers A, the roller A³ is then brought up to
the inner side of the iron or metal, and the machine set in motion and
stopped according to the required bend, or left to work the circle.
Having thus described our improvements, and the best means we are
acquainted with for carrying the same into effect, we would have it
understood that we do not confine ourselves to the precise details
shown and described, as these may be varied without departing from
the peculiar character of the Invention, but what we claim is,―
Firstly. The bending of angle or T iron, or any other section of iron
or other metal bars by means of three rollers into complete or part
circles, substantially as described.

page_text: Secondly. The conical friction clutch gear for varying the speed
between the two first rollers and the third roller, substantially as
described.
In witness whereof, we, the said William Henry Berry and
Fred Berry, have hereunto set our hands and seals, this Fourth
day of February, in the year of our Lord One thousand eight
hundred and seventy-three.
10 Witness,
WILLIAM HENRY BERRY. (L.S.)
FRED BERRY.
(L.S.)
WALTER JAMES TURNER, O.E.,
Patent Agent,
Bradford.