IMPROVEMENTS IN PUNCHES & DIES
Year: 1854

page_text: LETTERS PATENT to Charles Frederick Stansbury, of the firm of Nourse
& Co., American & General Patent Agents, of 17, Cornhill, London,
for the Invention of "IMPROVEMENTS IN PUNCHES & DIES."- A com-
munication.
Sealed the 2nd March 1855, and dated the 14th September 1854.
PROVISIONAL SPECIFICATION left by the said Charles Frederick Stans-
bury at the Office of the Commissioners of Patents, with his Petition,
on the 14th September 1854.
I, CHARLES FREDERICK STANSBURY, of the firm of Nourse & Co., American
& General Patent Agents, of 17, Cornhill, London, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN PONCHES & DIES," being
a communication, to be as follows:-
My Invention consists in a new method of constructing punches and dies,
my principal object being the production of superior accuracy, by reducing as
far as possible the amount of metallic contraction and expansion.
My Invention is applicable to punches and dies of various descriptions, but
especially to compound punches and dies, by means of which a number of
holes of various sizes and shapes are to be made at one and the same time. I
make my punches of steel of proper size, of the same diameter as the face of
the punch required, and these steel punches, when hardened and tempered, I
fit into stocks or holders of steel or other metal, the punches being held in
their places by binding screws or other similar contrivances. These stocks or
holders I fix on or into a solid bed piece or plate of steel or iron.

page_text: I make my dies also of pieces of steel of small size, so as to have as small
a quantity of metal in them as possible. Sometimes I make these dies by
drilling or piercing through the solid steel; at other times I make them in two
or more parts or sections, according to the shape of the holes or appertures
required. When these dies have been hardened and tempered, I place them
in a bed plate or stock of steel or other metal prepared to receive them; upon
this plate I mark with the greatest possible accuracy the several places I
intend the steel dies to occupy; in some case I fix the dies in the plate or
bed by making one end of the dies smaller than the other, and placing them
in holes in the plate tempered to fit them; in other cases I leave a narrow rim
or collar around the hole in the plate, and allow the lower edge of the die to
rest upon such collar or rim. By these means I reduce I reduce the metal to
be hardened to the smallest possible quantity, and thereby greatly diminish the
causes of disturbance and inaccuracy in and amongst the various parts of the
punches and dies. I also make use of certain spring guides attached to the die
plate to hold the discs or plates of metal to be pierced in their places, but
which permit the expansion of the said metal plates or discs, when struck or
pressed by the punches, to take place without producing disturbance or injury
to the work.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Frederick Stansbury in the Great Seal Patent Office
on the 18th March 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
FREDERICK STANSBURY, of the firm of Nourse & Co., American and General
Patent Agents, of No. 17, Cornhill, London, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of September, in the year of our Lord
One thousand eight hundred and fifty-four, in the eighteenth year of Her reign,
did; for Herself, Her heirs and successors, give and grant unto me, the said
Charles Frederick Stansbury, Her special licence that I, the said Charles
Frederick Stansbury, my executors, administrators, and assigns, or such others
as 1, the said Charles Frederick Stansbury, my executors, administrators, 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

page_text: "IMPROVEMENTS IN PUNCHES AND DIES," a communication, upon the condition
(amongst others) that I, the said Charles Frederick Stansbury, by an instru-
ment 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 Charles Frederick Stansbury, do hereby
declare the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Sheet of
Drawings; in which Figure 1 is a perspective view of my improved punches;
Figure 2 is a top view of my improved dies; Figure 3 is a longitudinal section
through the line a, a, of Figure 2; and Figure 4 is an end view of the die bed.
My Invention consists in a new method of constructing punches and dies;
my principal object being the attainment of superior accuracy, by reducing as
much as possible the amount of metallic contraction and expansion, which in
the hardening process so seriously interferes with precision of workmanship.
The Invention is applicable to punches and dies of various descriptions, but
especially to compound punches and dies, such as are represented in the
accompanying Drawings, which are intended to make a number of holes of
various sizes and shapes at one and the same time.
In Figure 1, A represents the block of metal into which the puch
stocks B, B, B, &c. are fixed; C, C, C, &c. represent the punches; and
D, D, D, &c. the binding screws, which confine them in their places. I make
my punches of rods of steel of proper size, and of the diameter of the punch
required, and these steel punches, when hardened and tempered, I fit into
stocks or holders B, B, of steel or other metal, the punches being held in
their places by binding screws D, D, or other similar means. These stocks
or holders I fix on or into a solid block or bed piece of metal, either steel
or iron.
In Figure 2, E, E, E, &c. represent the dies in position in the bed plate;
Fand G represent divided dies. H, Figures 2, 3, and 4, represents the solid
bed plate into which the dies are inserted. In Figure 3, I, J, and K, repre-
sent tapered dies inserted in the bed plate; L is a cylindrical die resting on
a shoulder or collar in the bed plate. In Figures 2, 3, and 4, M, M, &c.
represent spring guides; and N, the springs which actuate them.
I make my dies of pieces of steel of small size, so as to have as small a
quantity of metal in them as possible. Sometimes I make the dies by drilling

page_text: or piercing through the solid steel; at other times I make them as at F and G,
Figure 2, in two or more parts or sections, according to the shape of the
holes or apertures required. When these dies have been hardened and
tempered, I place them in a bed plate or stock of steel (H) or other metal
prepared to receive them. Upon this plate I mark with the greatest accuracy
the several places I intend the steel dies to occupy. In some cases I fix the
dies in the plate or bed by making one end of the dies smaller than the
other, and placing them in holes in the plato tapered to fit them, as shewn
at I, J, and K, Figure 3; in other cases I leave a narrow rim or collar around
the hole in the plate, and allow the lower edge of the die to rest upon such
collar or rim, in the manner shewn at L, Figure 3. By these means I reduco
the metal to be hardened to the smallest possible quantity, and thereby
greatly diminish the causes of disturbance and inaccuracy in and amongst the
various parts of the punches and dies. I also make use of spring guides M, M,
Figs. 2, 3, and 4, attached to the die bed, to hold the discs or plates of metal
to be pierced in their places, but which permit the expansion of said metal
plates or discs, when struck or pressed by the punchies, to take place without
occasioning disturbance or injury to the work. N, N, Figs. 2, 3, and 4,
represent the springs which actuate the spring guides. It is an incidental
advantage of my plan, that if any one of the punches or dies becomes injured,
it may be removed and replaced without disturbance to the rest of the series.
Having now described my Invention, what I claim under the above in part
recited Letters Patent is, the method of making punches and dies, substantially
such as above described; and particularly I claim the spring guides M, M,
and their springs N, N, constructed and operating substantially as described,
for the purpose specified.
In witness whereof, I, the said Charles Frederick Stansbury, have here-
unto set my hand and seal, this Twelfth day of March, in the year of
our Lord One thousand eight hundred and fifty-five.
CHARLES FREDERICK STANSBURY. (L.S.)