IMPROVEMENTS IN MACHINERY FOR MAKING METAL WASHERS AND SIMILAR ARTICLES."
Year: 1880

page_text: LETTERS PATENT to Robert Hay, of Motherwell, in the County of Lanark,
North Britain, Engineer, for an Invention of "IMPROVEMENTS IN MACHINERY
FOR MAKING METAL WASHERS AND SIMILAR ARTICLES."
PROVISIONAL SPECIFICATION left by the said Robert Hay at the Office
of the Commissioners of Patents on the 22nd March 1880.
i
ROBERT HAY, of Motherwell, in the County of Lanark, North Britain, Engineer.
"IMPROVEMENTS IN MACHINERY FOR MAKING METAL WASHERS AND SIMILAR
ARTICLES."
This Invention has for its object to improve the construction and action of
machinery for making metal washers and similar articles. The improved machinery
comprises a hollow or outer punch and a central solid punch, which two punchies
have imparted to them peculiar movements relatively to each other and to a
bolster, and work in connection with devices for detaching and delivering each
washer after it has been formed. The hollow punch has its face shaped the same
as the intended washer, which may be circular externally and internally, or of a
square or other convenient shape externally or internally. The central solid punch
has its face shaped the same as the aperture in the intended washer, and it is
moved in an opposite direction to the hollow punch, or otherwise, so as to act on
the opposite side of the metal sheet out of which the washer is formed, and so as
to enter into the hollow punch, the punchings out of the centres of the washers
being forced by it into the hollow punch through which they pass.
The sheet or plate out of which the washers are to be formed is entered between
the bolster and the hollow punch, and this punch moves so as to cut the washer
out of the sheet or plate and force it into the opening in the bolster.
The central
punch begins to operate on the washer, not at the moment that the hollow punch
does so, but immediately afterwards. When the punches separate after an operation
the sheet or plate if adhering to the hollow punch is detached by one or more fixed
prongs or stops, beyond which the punch is withdrawn. The washer is by the
central punch withdrawn through the bolster until it encounters a fixed stripping
plate, and then after the punch has been completely withdrawn through this
stripping plate the washer is pushed off or delivered through an opening by a lever;
Price 6d1

page_text: or if the parts are placed in some positions the washer may drop or slide off the
stripping plate by its own gravity, or it may be moved off by a jet of water, steam,
or nir.
The parts may be placed in various positions, and various known arrangements
for working and guiding them may be adopted; but in one convenient modification
the punches are held in blocks fitted to slide vertically in guidos, the hollow punch
being above and the central punch being below a table, on which the bolster is fixed.
Upper and lower parallel horizontal shafts, driven so as to make the same number
of revolutions, give motion to the punch blocks by means of eccentric pins and
connecting rods, whilst a cam projection on a wheel on one of the shafts serves for
actuating the delivering lever..
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Robert Hay in the Great Seal Patent Office on the 21st
September 1880.
ROBERT HAY, of Motherwell, in the County of Lanark, North Britain, Engineer.
"IMPROVEMENTS IN MACHINERY FOR MAKING METAL WASHERS AND SIMILAR
ARTICLES."
My said Invention has for its object to improve the construction and action of
machinery for making inetal washers and similar articles. My improved machinery
comprises a hollow or outer punch and a central solid punch, which two punches
have imparted to them peculiar movements relatively to cach other and to a bolster,
and work in connection with devices for detaching and delivering each washer
after it has been formed.
The hollow punch has its face shaped the same as the intended washer, which
may be circular externally and internally, or of a square or other convenient shape
externally or internally.
The central solid punch has its face shaped the same as the aperture in the
intended washer, and it is moved in an opposite direction to the hollow punch, or
otherwise, so as to act on the opposite side of the metal sheet out of which the
washer is formed, and so as to enter into the hollow punch, the punchings out of
the centres of the washers being forced by it into the hollow punch through which
they pass.
The sheet or plate out of which the washers are to be formed is entered between
the bolster and the hollow punch, and this punch moves so as to cut the washer
out of the sheet or plate and force it into the opening in the bolster. The central
punch begins to operate on the washer, not at the moment that the hollow punch
does so, but immediately afterwards. The washer is withdrawn by the central
punch through the bolster until it encounters a fixed stripping plate, and then
after the punch has been completely withdrawn through this stripping plate the
washer is pushed off or delivered through an opening; or if the parts are placed in

page_text: some positions the washer may drop or slide off the stripping plato by its own
gravity, or it may be moved off by a jet of water, steam, or air.
The parts may be placed in various positions, and various known arrangements
for working and guiding them may be adopted.
And in order that my said Invention and the manner of performing the same
may be properly understood I hereunto append two Slicets of explanatory
Drawings to be hereinafter referred to, and representing a washer making machine
constructed with my improvements. In these Drawings the same reference
numerals are used to mark the same or like parts wherever they are repeated.
Figures 1 and 2, on Sheet 1 of the accompanying Drawings, aro a plan and a
side elevation of the machine; Figure 3, on Sheet 2, is a front clevation; and
Figures 4 and 5 are vertical sections as at right to each other.
The framing of tho machine comprises two lower side plates G, which are boltod
down to a suitable foundation and a massive bracket-like body casting 7, which is
bolted by means of horizontal flanges 8 formed on each side of it down upon the
side plates 6, the lower part of the body casting 7 extending down between those
plates. The body casting 7 is mado with bearings for two horizontal shafts, an
upper one 9 and a lower one 10, which shafts extend from the front to the back
and have fixed on then at their back ends spur wheels 11, 12, which gear with a
pinion 13 on a first-motion shaft 14. The first-inotion shaft has its front end in n
bearing in the body casting 7, and its back end in a bearing in a bracket 15 fixed
on the sido plates 6; and it has on it a flywheel 16, a pulley 17 for a driving belt,
and a clutch 18 for disengaging or engaging the shaft with the pulley, this clutch
being moved by means of a foot lever 19, to which a spring 20 is applied to cause
the disengagement of the clutch whenever the foot is taken off the lever.
The front ends of the shafts 9, 10, have crank pins 21, 22, formed on them, which
pins are entered into eyes in connecting rods 23, 24. The upper connecting rod 23
extends upwards from its shaft 9, and its upper end is jointed on a pin 25 fixed in
the upper end of an upper slide block 26 fitted to work vertically in guides fixed to
the front end of the body casting 7 at its upper part, and in a similar way the
lower connecting rod 24 extending downwards from its shaft 10 is jointed on a
pin 27 at the lower end of a lower slide block 28, fitted to work vertically in
guides fixed to the lower part of the body casting 7. The upper slide block 26 has
a hollow punch 29 fixed to it, the acting end or face of this punch being made of
the shape of the intended washer; and when it descends it enters a very short
distance into a fixed bolster 30, which has formed down through it an opening
corresponding to the external contour of the washer. The bolster 30 is fixed down
on what may be termed the table 31 of the machine, this table being a projecting
ledge formed on the front of the body casting 7. The middle of the bottom of the
bolster 30 is cut out to form an opening from back to front for the discharge of
the washer, as hereinafter explained.
A solid central punch 32 having its acting end or face of the shape of the
opening in the intended washer is set in a holder 33 fixed to the top of the lower
slide block 28, and projects up through an opening in the table 31, and through an
opening in a check plate 34 fixed between the bolster 30 and the table 31. In
Figure 4 the upper and lower punches 29, 32, are shown in their lowest and
highest positions respectively in which they are when the punching action has
just been completed. When the upper punch 29 rises it is prevented from lifting
the sheet or plate out of which the washer has been punched by a forked check
piece 35 fixed to the body casting 7. As the lower punch 32 descends it carries
the washer down through the bolster 30 to the check plate 34, but the punch
continuing to descend until quite beneath the top surface of that plate the washer
is stripped off it. The washer is discharged from under the bolster 30 towards the
front of the machine by a pusher rod 30 which passes through a channel formed
for it in the body casting 7, its back end being acted on by a lever 37 on a short
vertical shaft 38, on which there is also fixed a bent lever 39 in a position to be
acted on by a block or antifriction roller 40 fitted on the lower spurwheel 12. A

page_text: spring 41 (indicated by dotted lines in Figure 1) is applied to the lever 39 to
return the parts after the passage of the roller 40.
Having thus particularly described my said Invention, and the manner of
performing the same, I have to state that I do not restrict myself to the preciso
details herein described or delineated, but that what I believe to be novel and
original, and claim as the Invention secured to me by and in terms of the herein-
before in part recited Letters Patent is,-
1. The arranging or combining together of the parts of machinery for making
metal washers and similar articles, substantially in the improved manner herein-
before described and shown in the accompanying Drawings.
2. The combination of a hollow punch operating in connection with a bolster
with a solid central punch which moves oppositely to the hollow punch, substantially
_in the manner and for the purposes herein before described.
3. The hereinbefore described arrangement of parts whereby the washer is taken
through the bolster on the return movement by the solid central punch, from which
it is subsequently stripped by a check plate through which the punch is withdrawn,
substantially as hereinbofore described.
In witness whereof, I, the said Robert Hay, have hereunto set my hand and
seal, this Seventeenth day of September, in the year of our Lord One
thousand eight hundred and eightv.
Witness,
EDMUND HUNT,
Patent Agent,
Glasgow.
ROBERT HAY. (LS.)