AN IMPROVED MACHINE OR APPARATUS FOR PUNCHING HOLES IN HOOP IRON, PUNCHING OUT OR STAMPING OUT THE TEETH IN STRIPS OF STEEL TO BE USED FOR BAND SAWS,' AND FOR OTHER PURPOSES TO WHICH THE SAID MACHINE OR APPARATUS IS APPLICABLE
Year: 1882

page_text: LETTERS PATENT to James Tushaw, of Osborn Place, London, E., Saw Mill
Engineer, for an Invention of "AN IMPROVED MACHINE OR APPARATUS FOR
PUNCHING HOLES IN HOOP IRON, PUNCHING OUT OR STAMPING OUT THE
TEETH IN STRIPS OF STEEL TO BE USED FOR BAND SAWS,' AND FOR OTHER
PURPOSES TO WHICH THE SAID MACHINE OR APPARATUS IS APPLICABLE."
PROVISIONAL SPECIFICATION left by the said James Tushaw at the Office
of the Commissioners of Patents on the 17th February 1882.
JAMES TUSHAW, of Osborn Place London E. Saw Mill Engineer. AN IMPROVED
MACHINE OR APPARATUS FOR PUNCHING HOLES IN HOOP IRON, PUNCHING
OUT OR STAMPING OUT THE TEETH IN STRIPS OF STEEL TO BE USED FOR
BAND SAWS" AND FOR OTHER PURPOSES TO WHICH THE SAID MACHINE OR
APPARATUS IS APPLICABLE.
My said Invention consists substantially in forming a compact, easily manipulated
machine or apparatus, in which by an arrangement and combination of geared
wheels, cans and rollers (or mechanical equivalents therefor) actuated from a main
or driving wheel, either by hand or steam power, as also in the form and
arrangement of the punching or stamping tools, and the dies in connection there-
with as also in the appliances I introduce for ". guiding" the material under
operation-I am thus enabled to produce a machine for the purposes herein before
indicated which shall be automatic and self-feeding in action so as to suit various
widths of the material to be operated upon, as also the gauges or distances
apart of the holes or indentations which it is desired to form in the material to
be operated upon; as also to allow of the said holes or indentations being of various
shapes or forms.
The arrangement, generally, of the apparatus according to my said Invention, as
adapted for punching hoop iron, is substantially as follows:-On a suitable hollow
solo plate I mount the body or main part of the machine consisting of a suitably
strong head piece, with a hollow cylindrical portion at the upper part, through
FD 073

page_text: which passes a shaft or spindle, to the one end of which (namely that at the
driving end of the machine) is attached the gearing for working the punching
apparatus, and actuated from a main or driving wheel and shaft. At the other,-
or punching, end, the shaft or spindle first named, is formed as a cam, working
in a suitable recess in the vertically sliding block or portion into which is fitted
the punching tool; and which, to ensure precision in action, is formed with
chamfered sides, and works up and down between corresponding fixed guide pieces.
To ensure the self-feeding, and automatic punching actions before referred to, I
connect the gearing at the driving end of the machine, with a toothed wheel
mounted on a horizontal spindle carried in suitable bearings formed on the top of
the hollow bed or sole plate; the other, or punching,-end of the said spindle, has
keyed upon it a roller or wheel, smooth or plain, on the periphery or face.
Underneath the sole plate is another spindle carried in suitable bearings, having a
toothed wheel which is in gear with that on the spindle above, and having also, at
the other end, a smooth or plain wheel or roller corresponding with that above.
On the machine being worked, the metal to be punched is gripped between and
drawn through, the last mentioned pair of smooth wheels or rollers, one of which
has a portion of the face or periphery cut away to an extent proportionate to the
desired amount of "feed." The guide through which the strip of metal is entered
into the machine is so arranged as to allow of different widths of metal being
operated upon by the same machine. The die plate which I use in the machine
according to my Invention, is a compound die plate and is secured to the top of the
sole plate, underneath the punching tool. The said die plate has in it several
holes, and I provide an arrangement for readily shifting the position of the said
die plate, so that, when one hole gets too much enlarged in the operation of
punching, another is brought into position, to correspond exactly with the punch.
The punch holder may be fitted with punching or stamping out tools of different
forms in section (corresponding dies being also provided) so as to allow of the holes
formed in the metal under operation being of various shapes, and forms; and, the
metal as it is punched, or stamped out, passes away from the apparatus between
suitable guides.
When the apparatus according to my Invention is employed for the purpose of
punching and setting saws and for similar applications, the following modifications,
(or suitable mechanical equivalents therefor) to ensure the proper foeding through
and delivery of the material to be operated upon, will have to be introduced, as
distinguished from the feeding and delivering arrangement last described, for
punching hoop iron; namely, the spindle carrying the lower of the first mentioned
toothed wheels, at the driving end of the machine, is continued through the sole
plate, and, has keyed upon it a mitre wheel gearing into another mitre wheel upon
a shaft carried in suitable bearings, at the driving end of the machine; the last
mentioned mitre wheel having provision for being put in and out of gear. The
cross shaft last mentioned has keyed upon it a disc fitted with a pin in suitable
dovetails, for the purpose of regulating the amount of throw; to the said pin is
attached a connecting rod with universal joint at each end, and attached at the
end furthest from the disc, to a "bell cranked" catch piece or detent, capable of
working either with a certain amount of radial play or vibration, or, in a horizontal,
direction, by means of the provision hereinafter described.
The said detent or catch piece is jointed towards the feeding (and gripping) end
to allow of its being turned over or reversed, as would be necessary for instance,
when having punched a saw blade, the operation of "setting" has to be performed.
The feeding (and gripping) end of the said detent or catch piece is also formed of
a shape to suit that of the serrations or punched out portions of the metal under
operation. The pin upon which the said catch piece pivots, passes through the catch
piece and fits into a horizontally working slide piece, with dovetailed edges, working
between corresponding fixed guide pieces. The end of the said slide piece nearest
the before mentioned bell cranked" catch piece, is attached to a connecting rod,
in connection with a spring for giving the slide piece (and the bell cranked

page_text: catch piece also) motion directly forward or backward. The end of the last
mentioned connecting rod nearest the driving end of the machine, abuts upon, or
is brought in contact with, a cam, carried upon the before mentioned cross shaft, in
such manner, that when the machine is working, the gripping end of the bell
cranked catch piece, retires or frees itself from the indentations or punched out
spaces formed in the metal being passed through the machine; the said "bell
cranked" catch pieco being again brought into position for feeding through, by
the operation of the first named connecting rod and attachments before described.
Suitable guides are provided, between which the punched out strips are passed
away from the machine.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Tushaw in the Great Seal Patent Office on the 17th August
1882.
JAMES TUSHAW of Osborn Place, London E. Saw Mill Engineer. "AN IMPROVED
MACHINE OR APPARATUS FOR PUNCHING HOLES IN HOOP IRON; PUNCHING
OUT OR STAMPING OUT THE TEETH IN STRIPS OF STEEL TO BE USED AS BAND
SAWS AND FOR OTHER PURPOSES TO WHICH THE SAID MACHINE OR APPARATUS
IS APPLICABLE."
My said Invention consists substantially, in forming a compact, easily manipu-
lated machine or apparatus in which, by an arrangement and combination of
geared wheels, cams and rollers (or mechanical equivalents therefor) actuated from
a main or driving wheel, either by hand or steam power; as also, in the form and
arrangement of the punching or stamping tools and the dies in connection therewith,
and likewise in the appliances I introduce for "guiding" the material under
operation; I am thus enabled to produce a machine for the purposes herein before
indicated which shall be automatic and self-feeding in action, so as to suit various
widths of the material to be operated upon, as also the gauges or distances apart
of the boles or indentations which it is desired to form in the material to be
operated upon. As well as to allow of the said holes or indentations being of
various shapes or forms.
.
The arrangement, generally, of the apparatus according to my said Invention as
adapted for punching holes in hoop iron is substantially as follows; videlicet, on a
suitable hollow bed or sole plate I mount the body or main part of the punching
apparatus, consisting of a suitably strong head piece with a hollow cylindrical
portion at the upper part, through which passes a shaft or spindle to one end of
which (namely at the driving end of the machine) is attached the gearing for
working the punching apparatus, and actuated from a main or driving wheel and
shaft. At the other, or punching end, the first named shaft or spindle is formed as
a cam, working in a suitable recess in the vertical sliding portion into which is
fitted the punching tool holder and which, (namely the said portion into which is
fitted the punching tool-holder) to ensure precision in action, is formed with
chamfered sides, and works up and down between corresponding fixed guide pieces.
To ensure the self feeding and automatic punching action before referred to, I
connect the gearing at the driving end of the machine with a toothed wheel
mounted on the horizontal spindle carried in suitable bearings formed on the top
of the hollow bed or sole plate; the other, or punching end, of the said spindle has
keyed upon it a roller or wheel smooth, or plain, on the periphery or face. Under-
neath the sole plate is another spindle carried in suitable bearings having a toothed
wheel which is in gear with that on the spindle above and having also, at the other
end, a smooth or plain wheel or roller corresponding with that above. On the
machine being worked, the metal to be punched, is gripped between, and drawn
through, the last mentioned pair of smooth wheels or rollers; one of which has a
portion of the face or periphery cut away to an extent proportionate to the desired
amount of feed. The guides through which the strip of metal leaves the machine
are so arranged as to allow of different widths of metal being operated upon by
the same machine. The die plate which I use in connection with the said machine
is a compound die plate and is secured on the top of the sole plate, underneath the
punch; the said die plate has in it several holes, and I provide an arrangement for
readily shifting the position of the said die plate, so that, when one hole gets too
inuch enlarged, in the process of punching, another is brought into position to
correspond exactly with the punch.

page_text: The punch holder may be fitted with punching or stamping out tools of
different forms in section (corresponding dies being also provided) so as to
allow of the holes formed in the inetal under operation being of various shapes
and forms.
When the apparatus according to my Invention is employed for the purpose of
punching and setting saws and for similar applications, the following modifications
or suitable mechanism equivalent therefor, to ensure the proper feeding through
and delivery of the material to be operated upon will have to be introduced as
distinguished from the feeding arrangement last described for punching hoop iron;
videlicet; the spindle carrying the lower of the first mentioned toothed wheels at
the driving end of the machine is continued through the sole plate; and has keyed
upon it a mitre wheel gearing into another mitre wheel upon a shaft carried in
suitable bearings; at the driving end of the bed of the machine; the last
mentioned mitre wheel having provision for being put in and out of gear. The
cross shaft last mentioned has keyed upon it a disc fitted with a pin in suitable
dovetails, for the purpose of regulating the amount of throw; to the said pin is
attached a connecting rod jointed at each end and attached at the end furthest
from the disc to a bell crank catch piece capable of working either with a certain
amount of radial play, or, in a direct horizontal direction, by means of the arrange-
ment hereinafter described.
For the purpose of more clearly defining the nature and objects of my said
Invention, I have appended the accompanying Sheet of Drawings in which the
same letters of reference are employed to denote like or corresponding parts in
each. Figure 1 being a plan view of an arrangement of apparatus according to
my Invention; Figure 2 is a side elevational view Figure 1. Figure 3 shews a front
elevational view at the punching end of the machine, and Figure 4 an elevational
view at the back or driving end of the machine, the fly wheel A and driving
pulleys B B being removed in this view. Figures 5, 6 and 7 and 8 are detailed
detached views to be hereinafter referred to. Referring to Figures 1, 2, 3 and 4, A is
the fly wheel; B B' fast and loose driving pulleys; C the body part; C¹ hollow
portion through which passes the main spindle c; c¹ the cam shaped end of same
working in the recess formed in a (Figure 3); E E F gearing at driving end of the
machine; G wheel gearing into F and carried on the horizontal shaft g carried in
bearings g; H the top feeding roller with part h¹ cut away as herein before
described when the machine is employed for punching hoop iron; G₁ the wheel
on the spindle h below the bed plate gearing at the driving end of the machine
into wheel G and carrying at the punching end the roller J. a¹, a¹ are the side
guide pieces to a. i, i, the guides between which the punched metal is passed from
the machine. The parts lettered respectively K, L, M, J', K', L', I, N, O, Q l, m,
ml m n o p in Figures 2, 3, and 4 more particularly, refer to the several parts
hereinbefore described in reference to the application of my apparatus according
to my Invention when used for saw punching and setting all as hereinbefore lust
described; and, following up which is the adjustable point of the bell crank
piece m working on a fixed stud or pin 8; t is a stud or pin which may be
tightened up when necessary and is adapted into a slot in such manner as to
enable the point to assume different angles according to the nature of the
indentations to be formed or to the different distances apart at which the teeth
are spaced, as for saw setting, and the point is formed of a shape to suit that of
the indentations required to be formed; the bell crank piece m is fulcrumed at n
where the pin passes through m and the sole plate D and the horizontally
working slide piece 7 (with dovetailed edges and working between guides on the
top of the bed D) and fits into the horizontally working piece o beneath the bed D
and the end of which abuts upon the cam Q. Suitable provision is made to allow
of the direction of motion of the machine being reversed, as would be necessary for
instance when having punched a saw, the operation of setting has to be performed
And, I wish it to be understood however that in the application of the apparatus
according to my Invention for saw punching and setting I may substitute the

page_text: following arrangement of parts in lieu of that last described that is to say referring
to views Figures 1, 2, and 4.
The disc m may be attached to the short shaft q and at the part of the sole plate
marked P a pedestal may be mounted with journal at the top, through which is
passed a short spindle carrying 2 lever arms connected respectively with the
before mentioned pin in the disc m, the connecting rod m¹ and the bell crank
piece m Referring to the detailed views in the accompanying Drawings,
Figure 5 is an enlarged sectional view showing the adjustable guide pieces i before
mentioned. Figuros 6, 7 and 8 are detailed views as specimens of different kinds
of punching work for which the machine is adapted.
When the apparatus according to my Invention is used for the purpose of
punching and setting web saws, I adapt and secure to the sole plate a projecting
table piece as shown more particularly in Figures 1 and 2 and partly in Figure 3,
having on the top thereof V shaped recesses into which take corresponding V pro-
jections on the horizontally working and gripping piece on top with parallel motion
arrangement J, J1, K₁ to allow of the saw blade being caused to travel underneath
the punching tool when the machine is at work.
It will be readily understood as will be apparent to any practical engineer, that
when the apparatus according to my Invention is used for punching and setting
saws, the top feeding roller H (used when punching hoop iron or for similar
purposes,) will be removed and the mitre wheel L will be put in gear with K by
a clutch or suitable disengaging gear provided for the purpose; and vice versá
on the machine requiring to be re-used for ordinary punching operations the
wheel L will be thrown out of gear and the roller H will be refitted. Or the
machine may be made intact in each case for the separate purposes mentioned.
Although I have only referred to some of the purposes to which the apparatus
according to my Invention may be applied, there are a variety of other appli-
cations in connection with metal work for which it is adaptable; thus for instance
for stamping out or cutting out certain portions of the metal work used in the
construction of piano-fortes as shown in the detailed detached view Figure 6.
Though also I have shown the machine constructed for working by steam power
it is also arranged for working by hand as will be readily understood. Also when
required for heavier work than that herein specified, the several parts of the
machine would be made of proportionately increased strength and it may also bo
geared to drive as a single purchase machine or as by double purchase.
Having now described and illustrated my said Invention I wish it to be
understood that I do not claim as novel the separate parts by themselves of which
my said apparatus is made up or composed but what I do claim is the arrangement
and combination of parts generally and substantially as and for the purposes herein
specified and as shewn in the accompanying Sheet of Drawings.
In witness whereof I the said James Tushaw have hereunto set my hand
and seal this Fifteenth day of August in the year of our Lord One
thousand eight hundred and eighty two.