Improvements in or connected with Punching and Shearing Machines.
Year: 1889

page_text: Date of Application, 26th Feb., 1889
Complete Specification Left, 26th Nov., 1889--Accepted, 1st Feb., 1890
PROVISIONAL SPECIFICATION.
Improvements in or connected with Punching and Shearing
Machines.
I, NICHOLAS BIRD, of William Street, Workington, in the County of Cumberland,
Blacksmith, do hereby declare the nature of this invention to be as follows:-
A bending press is added to the punching and shearing machine and worked, with
the same motive power and at the same time as the shears and punch are at work, by
an eccentric off the spur wheel driving the shaft which lifts the shears and punch. The
bending press stands perpendicular alongside and attached to the punching and shearing
machine and can be used with moveable dies of the various shapes required for horse shoes
chain links and other articles. These dies can be taken in and out of their socket or
foundation at pleasure. Into these dies a ram working in a slide descends once with
every revolution of the spur wheel being connected therewith as mentioned by an
eccentric connecting rod. The piece of straight bar iron or other metal is simply
taken direct from the shears or punch whilst still hot and laid across the top of the
die and the ram descends upon it immediately and presses it into the die giving it the
required shape. The head of the ram is moveable so that a ram head can be used to
fit the die required to be used.
COMPLETE SPECIFICATION.
Improvements in or connected with Punching and Shearing
Machines.
I, NICHOLAS BIRD, of William Street, Workington, in the County of Cumberland,
Blacksmith, 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 :--
The object of this invention is to combine with a certain class of punching and
shearing machines a bending press in which horse shoe blanks, chain links, may be
bent to shape, or in which bars of iron may be tested.
It consists essentially in the combination with punching and shearing machines of
that class which have the shear blades and punch dies at the same side of the
machine of a reciprocating plunger and a die block or mould so placed that at each
stroke the plunger will enter the die and bend to the required extent any bar of
metal carried down with it.
The invention will be fully described with reference to the accompanying
drawings.
Fig. 1, is a side elevation of apparatus constructed according to my invention.
Fig. 2, end view of same.
Fig. 3, elevation of die or mould (H) mounted on spring buffer.
Fig. 4, elevation of modified form of same.
The machine is of that class in which the shear blades and punching dies are placed
at the same side of the machine. The frame work A, the shear blades B, and the
punch dies Call being of ordinary construction and the latter actuated in the usual
way from the spur wheel D.
To the spur wheel D on the shaft d which lifts or operates the shears and punch,
I attach a connecting rod E which carries at its other end a plunger or ram F with a
projecting stud or arin f. The head of the plunger moves to and fro in slides G
erected perpendicularly at the side of the machine. Besides the plunger slide is

page_text: erected a die H into which stud or arm ƒ descends at each revolution of the
wheel D.
The connecting rod E is attached to the wheel 1 by means of a plate e bolted
thereto carrying a crank pin e¹ on which the head of the connecting rod turns, and it
is attached to the head of the plunger or ram F by the pin f..
The die H may be of any suitable shape necessary for the articles under operation
and may be readily removed and exchanged for another and may be provided with a
slot or groove to receive the bars of iron laid across it.
In order to reduce the rigidity of the die, or to render the pressure exerted more
elastic the die H may be mounted on a strong spring or springs I forming a buffer
as shown is Figs. 3 and 4, or for the same purpose a spring buffer may be inserted
between the connecting rod E and the head of the plunger or ram F.
It will be obvious that while the most convenient arrangement for the apparatus is
to have the plunger moving and the die stationary the plunger head may be made
with the internal or re-entering die working in conjunction with a fixed or rigid block
over which the bar of metal can be bent.
The bending press thus added to the punching and shearing machine is actuated
by the same motive power and at the same time as the shears and punch, the
plunger or ram Fusing and falling once for each revolution of the wheel D. The
bar of metal for the making of horse shoe blanks, chain links or other bent or curved
articles is taken whilst hot direct from the shears or punch and laid across the top of
the die H, and the ram or plunger F descending upon it presses it into the die
giving it the required shape.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I wish it to be understood
that I make no claim for any of the several parts of the apparatus shown or described
and taken separately but that what I claim is :-
1. A punching and shearing machine having added thereto or combined therewith
a bending or testing press constructed with a reciprocating arm and plunger attached
to a moving part of the machine and a stationary die substantially as described.
2. A combined punching, shearing, and bending machine constructed and arranged
substantially as described.
Dated this 25th day of November 1880
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.