IMPROVEMENTS IN MACHINERY 66 OR APPARATUS FOR BENDING ANGLE IRON INTO CURVILINEAR FORMS SUITABLE FOR THE MANUFACTURE OF HORSE-SHOES AND OTHER PURPOSES
Year: 1877

page_text: LETTERS PATENT to Edward Griffith Brewer, of Chancery Lane, in the
County of Middlesex, for the Invention of IMPROVEMENTS IN MACHINERY
66
OR APPARATUS FOR BENDING ANGLE IRON INTO CURVILINEAR FORMS SUITABLE
FOR THE MANUFACTURE OF HORSE-SHOES AND OTHER PURPOSES." A communi-
cation from abroad by John Douglass Billings, of the City, County, and State
of New York, in the United States of America.
Sealed the 7th May 1878, and dated the 7th November 1877.
PROVISIONAL SPECIFICATION left by the said Edward Griffith Brewer
at the Office of the Commissioners of Patents on the 7th November 1877.
EDWARD GRIFFITH BREWER, of Chancery Lane, in the County of Middlesex.
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR BENDING ANGLE IRON INTO
CURVILINEAR FORMS SUITABLE FOR THE MANUFACTURE OF HORSE-SHOES AND OTHER
PURPOSES." (A communication from abroad by John Douglass Billings, of the City,
County, and State of New. York, in the United States of America.)
This Invention has reference to machinery for bending angle iron or steel bars
into any required curvilinear form by means of vertical drop dies or punches, forcing
the same down between antifriction rollers upon the inner curved edges of oscil-
lating jaws, and then raising the perfectly formed shoe out of the jaws and dropping
the same through an opening by means of arms and hinged plate finished for
punching the nail holes, all substantially as hereafter described.
The machine is composed of vertical back of solid iron plates, or otherwise pro-
vided with eccentric oscillating jaws working upon axes having springs below, of a
punch and antifriction rollers which receive and support the angle iron blanks or
bars preparatory to their being forced down into shape.
There is a swinging plate hinged at the back of the dropping die or punch; this
punch is kept in motion by means of the vertical shaft connected to the head of the
punch. The punch may also be provided on each side thereof with vertical
Price dl

page_text: standards to keep it in a perpendicular line when operated by the shaft worked by
any suitable gearing and power.
A flexible compensating spring secured to and operated by a roller at one end
thereof, whilst the upper end passes down into the machine and presses against the
outer face of the punch; this spring is not of very great importance, excepting as
a compensator, hence may be left off without deteriorating the other working parts
of this machine.
The mode of bending, according to this Invention, an angle iron or steel bar into
the curvilinear forms of a horse-shoe without wrinkling the same is as follows:-
First raise the punch sufficiently high to place the bar of angle iron to be bent upon
the top of the antifriction rollers; the punch or vertical die is set in motion under
sufficient pressure to force the bar or blank down between the antifriction rollers
upon the internal curved forming edges of the oscillating cam jaws in such a manner
that the inner lower points of the jaws are forced downward upon the bed plate of
the machine, so that the top of the jaws are forced inward (towards each other) as
they oscillate upon their eccentric axis, thereby compressing the ends of the bar
forming the heel of the shoe inward until the shoe assumes the proper form.
The forming die with the shoe is then raised, when the arm sets the shoe free.
The shoe being fashioned into its proper form falls by its own gravity down
through a hopper or flue ready for punching the nail holes.
The jaws are forced upward by the springs ready to receive another blank.
The machine is equally well adapted to bending angle iron for various purposes
by simply changing the die, or punch, and jaws, to suit the required curve."

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Edward Griffith Brewer in the Great Seal Patent Office on the 7th
May 1878.
EDWARD GRIFFITH BREWER, of Chancery Lane, in the County of Middlesex.
"IMPROVEMENTS IN MACHINERY OR APPARATUS FOR BENDING ANGLE IRON INTO
CURVILINEAR FORMS SUITABLE FOR THE MANUFACTURE OF HORSE-SHOES AND OTHER
PURPOSES." (A communication from abroad by John Douglass Billings, of the City,
County, and State of New York, in the United States of America.)
This Invention has reference to machinery for bending angle iron or steel bars
into any required curvilinear form by means of vertical drop dies or punches forcing
the same down between antifriction rollers upon the inner curved edges of oscil-
lating jaws, and then raising the perfectly formed shoe out of the jaws and dropping
the same through an opening by means of arms and hinged plate finished for
punching the nail holes, all substantially as hereafter described.
The Invention will be best understood by reference to the accompanying
Drawings, of which Figure 1 is an internal vertical view showing the working
parts of the machine for bending angle iron or steel bars in the form of a horse-
shoe; A, A is the vertical back of the machine, composed of solid iron plates or
otherwise; C, C, are eccentric oscillating jaws operating upon their axes r,r; these
cam jaws are also provided with springs at the bottom thereof; D is the punch;
e, e, are antifriction rollers which receive and support the angle iron blanks or bars
preparatory to their being forced down into shape, shown at S, S, which represents
one of my improved horse-shoes in the bending machine.
F, F, is a swinging plate hinged at the back of the dropping die or punch D, as
shown at H, H; this punch is kept in motion by means of the vertical shaft con-
nected to the head of the punch D, as shown at P, which represents a short section
of the same. The punch may also be provided on each side thereof with vertical
standards to keep it in a perpendicular line when operated by the shaft P, worked
by any suitable gearing and motor power.
Figure 2 is an exterior front view of the machine, showing the punch or die D
elevated above the machine in the position where the shoe S is dropped down
through the machine, coming out at the bottom thereof at A¹, by means of the arms
or springs O; O, upon the shaft m, operated by the lever or other power n, pressing
the shoe S and binged back plate F free from the punch D, which allows the shoe
to fall by its own gravity through the opening A'; 1 and 2 are bolts to hold the
machine together.
Figure 3 is a transverse vertical section of the bending machine through the centre
thereof at x, x, Figure 4, the punch D being raised up in a similar position to that
of Figure 2, and having the swinging back plate F pressed back by the armis or
springs O, O, and the shoe S, in the act of dropping down through the hopper or
flue A', after which operation the arms are thrown back to the front of the
machine, and the hinged plate F falls by its own gravity in position against the
back of the punch D ready to be forced down into the flue A', with the falling
punch to press the angle bar into shape.
O' is a flexible compensating spring secured to and operated by the shaft m at
one end thereof, while the upper end passes down into the machine and presses
against the outer face of the punch D; this spring is not of very great importance
excepting as a compensator; hence may be left off without deteriorating the other
working parts of the machine.
Figure 4 is a plan view of the machine; the letters of reference represent similar
parts to those indicated by the same letters in the other Drawings.
Having thus set forth the individual parts of this Invention I will now describe
the operation of the mode of bending an angle iron or steel bar into the curve-
linear forms of a horse-shoe without wrinkling the same. First raise the punch D
sufficiently high to place the bar of angle iron (to be bent) upon the top of the anti-

page_text: friction rollers e, e, as shown at V, Figure 3; the punch or vertical die D is set in
motion under sufficient pressure to force the bar or blank V down between the anti-
friction rollers e; e, upon the internal curved. forming edges of the oscillating cam
jaws C, C, as shown at S, S, Figure 1, in such a manner that the inner lower points
of the jaws C are forced downward upon the bed plate of the inachine at A¹, so, that
the top of the jaws C are forced inward towards each other as they oscillate
upon their eccentric axis r, r, thereby compressing the ends of the bar forming the
heel of the shoe S inward until the shoe assumes the proper form, as shown at
Figure 1. The forming die D with the shoe S is then raised in the position shown
at Figure 2, when the arm O sets the shoe S free by pressing it and the swinging
plate F in the position shown at Fig. 3.
The shoe S being fashioned into its proper form falls by its own gravity down
through the hopper or flue A' ready for punching the nail holes.
The jaws C, C, are forced upward by the springs S¹, S¹, into the position shown
in dotted lines at Fig. 2, ready to receive another blank.
I would here state that the machine is equally well adapted to bending angle iron
for various purposes by simply changing the die or punch D and jaws C to suit
the required curve, but the present form of die or punch and compressing jaws are
expressly for horse-shoe blanks, such as produced by the Patent forming machine.
Having now described the nature of the said Invention, and in what manner the
same is to be performed, I declare that I claim the construction of a machine for
bending angle iron or steel bars into the required curvilinear form by means of a
vertical drop die or punch D forcing the same down between two anti-friction
rollers e, e, upon the inner curved edges of the oscillating jaws C, C, and then raising
the perfectly formed shoe out of the jaws C, and dropping the same through the
opening A¹, by means of the arms O, O, and hinged plate F, finished for punching
the nail holes in a perfect manner, substantially as shown and described.
.1.
In witness whereof, I, the said Edward Griffith Brewer, have hereunto' sét
my hand and seal, this Sixth day of May, in the year of our Lord' One
thousand eight hundred and seventy-eight.
ERREWER
T EC BREWED-
(L.S.)