A MACHINE FOR STAMPING METALS AND FORGING IRON AND STEEL
Year: 1852

page_text: LETTERS PATENT to Joseph Hill, of Birmingham, in the County
of Warwick, Stamper, &c., for the Invention of "A MACHINE FOR
STAMPING METALS AND FORGING IRON AND STEEL."
- Sealed the 12th January 1853, and dated the 6th October 1852.
PROVISIONAL SPECIFICATION left by the said Joseph Hill at
the Office of the Commissioners of Patents, with his Petition, on
the 6th October 1852.
I, JOSEPH HILL, of Birmingham, in the County of Warwick,
Stamper, &c., do hereby declare the nature of the said Invention for
"A MACHINE FOR STAMPING METALS AND FORGING IRON AND STEEL," to be
as follows:
This Invention consists of giving motion to a ram or hammer by
means of a piston, working by atmospheric pressure in a cylinder,
within which cylinder a vacuum is obtained to raise the piston, and
with it the ram or hammer, and the distance through which the ram or
hammer is raised, and consequently the distance through which it
falls on admitting air to the cylinder is regulated by suitable valves and
gearing.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Hill in the Great Seal Patent Office,
on the 6th April 1853..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
JOSEPH HILL, of Birmingham, in the County of Warwick, Stamper,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of October, in the year
of our Lord. One thousand eight hundred and fifty-two, in the six-
teenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Joseph Hill, Her special license
that I, the said Joseph Hill, my executors, administrators, and assigns,.
or such others as I, the said Joseph Hill, my executors, adminis-
trators, 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 "A MACHINE FOR STAMPING
METALS, AND FORGING IRON AND STEEL," upon the condition (amongst
others) that I, the said Joseph Hill, by an instrument in writing under
my hand and seal, 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 I, the said Joseph Hill, do hereby declare
the nature of the said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by
the following statement thereof (that is to say):
My Invention consists of giving motion to a ram or hammer, by
means of a piston working by atmospheric pressure in a cylinder, within
which cylinder a vacuum is obtained to raise the piston, and with it
the ram or hammer, and through which the ram or hammer is raised,
and consequently through which it falls on admitting air to the cylin-
ders is regulated by suitable valves and gearing.

page_text: And in order that my said Invention may be most fully understood,
and readily carried into effect, I will proceed to describe the means
pursued by me......
DESCRIPTION OF THE DRAWING
which represents a section of the machine. a, is the cylinder, which
is fixed in a suitable frame as shown. b, is the ram, which at its upper
end is provided with packing to keepitair-tight, and yet allow it to slide
freely within the cylinder a. At.the lower end of the ram there are
projections 6, 61, which have grooves formed in them by which these
projections slide on the guides j,j, of the side framing. The hammer
or tool c, suitable for stamping metals, or for forging iron or steel, is to
be fixed on the lower end of the ram b, in like manner to that pursued
in steam hammers, and which is well understood. d, is the pipe
leading to a vacuum apparatus, which may be kept free from air by
means of air pumps, or by condensing steam therein, as is well under-
stood. e, is a valve which is shown in a position to obtain a vacuum
in the cylinder a; but on the ram b, rising the valve will be moved, and
the atmosphere admitted, when the ram will immediately descend by its
gravity. And in order to regulate the length of spoke to suit any par-
ticular work, the valve e, is caused to be acted on by the rising the ram
b, in the following manner: f, is a rod having a weight, or it may be a
spring g, at its end, tending at all times to remain down, and to keep
the valve e, open to the atmosphere. The rod f, is connected by means
of a bell crank and connecting rod h, to the valve, and the rod f, is
kept parallel by the arms l, and i, which are attached by pin joints to
the rod f, and to the framing. On the pin joints or axis of the arm i,
there is fixed an arm i, which rests on the lever or trigger is, which
moves on an axis fixed to the framing, all which is clearly shown in the
Drawing. h, is a tappet fixed on the rod h', which moves up and down
with the ram; hence, when the tappet comes against the tail of the
lever or trigger it, the weight g, will be released, and the valve will be
moved, and will open a way for the atmosphere to enter the cylinder,
when the ramb, will descend, and in its descent it will, at the completion
of the stroke, by coming against the tail end of the lever n, again

page_text: move the valve to open the cylinder to the vacuum. It will therefore
be evident that according to the position of the tappet 7, which may
be fixed to any part of the rod h', so will be the length of stroke before
the ram is set free.
Having thus described the nature of my Invention, and the manner
of performing the same, I would have it understood that I do not
confine myself to the details herein described, so long as the peculiar
character of my Invention is retained; but what I claim is the mode of
combining the parts herein described in such manner that the ram or
hammer may be worked as herein described.
In witness whereof, I, the said Joseph Hill, have hereunto
set my hand and seal, this Fifth day of April, in the year
of our Lord One thousand eight hundred and fifty-three.
Witness,
WM SUNDERLAND,
2, Waterloo St.,
Birmingham.
JOSEPH HILL. (L.S.)