IMPROVED METHOD OF STAMPING PANS AND SCALES
Year: 1818

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
PERSHOUSE, of Birmingham, in the County of Warwick, Factor, send
greeting.
WHEREAS I, the said Henry Pershouse, have invented an "IMPROVED
METHOD OF STAMPING PANS AND SCALES," and whereas His Majesty King
George the Third, by Letters Patent, bearing date at Westminster, the Tenth
day, of December, in the fifty-ninth year of His reign, after reciting my
said Invention and my Petition for the said Letters Patent for it for the term
of fourteen years, hath given and granted unto me, the said Henry Pershouse,
my exors, admors, and assigns, especial licence, full power, sole privilege and
authority, that I, the said Henry Pershouse, my exors, admiors, or assigns,
and every of them, by myself or themselves, or by my and their deputy or
deputies, servants or agents, or such others as I, the said Henry Pershouse,
my exors, admors, or assigns, should at any time agree with, and no others,
from time to time and at all times thereafter, during the term of years
therein, should and lawfully might use, exercise, and vend my said Invention
within that part of the United Kingdom of Great Britain and Ireland called

page_text: England, the Dominion of Wales, and Town of Berwick-upon-Tweed, in such
manner as to me, the said Henry Pershouse, my exors, adñors, and assigns, or
any of them, should in my or their discretion seem. meet; and it is by the
said Letters Patent provided that if I, the said Henry Pershouse, should not
particularly describe and ascertain the nature of my said Invention, and in
what manner the same was to be performed, by an instrument in writing
under my hand and seal, and cause the same to be inrolled in the High
Court of Chancery within two calendar months next and immediately after
the date of the said Letters Patent, that then the said Letters Patent and
all liberties and advantages thereby granted, should utterly cease, determine,
and become void, anything. therein..contained to the contrary in anywise not-
withstanding, as in and by the said Letters Patent, inrolled in the High
Court of Chancery, may more fully appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Henry Pershouse, do hereby declare that the nature of my said Invention
or improvement, and the manner in which the same is to be performed, are
particularly described in the Diagrams and words following:-
I take a piece of copper, brass, or mixture of metals rolled, which I cut
into a circular shape by means of a press or shears, and which is then called
a blank. This blank is annealed, and put into a die called a raising die No. 3,
and a section of it, No. 1, in the annexed Diagram. This blank is gradually
taken down to the bottom of the die 3, by a succession of forces made and
affixed to the stamp hammer in manner hereafter described, of which one
is shewn, No. 13, gradually increasing in depth according to the quality
of the blank and nature of the pan or scale required. The blank is
annealed during the process of stamping whenever by the blows of the
stamp it is become less malleable: upon leaving this die the blank is somewhat
in the shape of the pan No. 7. I then take the die No. 4, which I call a ball
die, No. 2 a section of it, and having placed, as is usual, a ring of clay around
the top edge of it for the height of one inch or thereabouts, I pour melted
force metal into it until the die is filled up to the top of the clay. The force
metal which I prefer is called tin; this force metal is affixed to the stamp
hammer, which is of a circular form, adapted to the die with bars or
across the face of it by letting the hammer fall upon it, then the bars or jags
in the hammer penetrating the metal hold it fast. This force is like No. 11;
No. 5 a section of it. I then place the pan or scale No. 7 upon the ball die 4;
and strike it. with the force No. 11, which causes the pan or scale to assume
the shape of No. 8, having a rim projecting horizontally around it. Having
struck the pan or scale with this force I take another force, No. 12, which I
jags

page_text: make by filling the die 4 with clay to within about half an inch of the top of
the ball, and pouring into the die the melted force metal, and letting the
stamp hammer fall on it as before described; with this force No. 12, of which
No. 6 is a section, and which I call a half force, I strike the pan or scale a
number of blows to harden the bottom of it. These blows vary from 3 to 8,
according to the quality of metal of which the pan or scale is made. Should
the blows with this half force No. 12 alter the shape of the pan or scale, it
is struck with the whole force No. 11 from 2 to 6 blows; this process leaves.
it like No. 8, with a rim projecting in a horizontal direction around it. The
pan is not annealed during the process of striking it upon the ball die No. 4,
but it is turned round between every blow with the forces 11 and 12, that
these forces may have a proper bearing all around the pan. The horizontal rim
may be cut entirely off at a lathe or press, or may be in part cut off if a round
edge is wanted, and the round edge may be turned at a lathe either hollow or
with wire in it. The raising die and what I call the ball die are all the
descriptions of dies I use in stamping pans or scales, but I do not mean to
state that all the dies I use are of the shapes depicted; they may either be
shallower or deeper, and of different shapes, but I always use as a finishing die
one upon the principle of the ball die, in order to obtain a clear and smooth
inside, and a horizontal projecting rim to the pan or scale; and by means of
cutting off eitber all or part of the horizontal rim I obtain the pans or scales
from one pair of dies all of the same depth and width, and as nearly alike in
weight as possible: the pans or scales may be burnished or polished in the way
that copper, brass, or mixture of metals usually are, and which needs no
description.
In witness whereof, I, the said Henry Pershouse, have hereunto set my
hand and seal, the First day of February, in the year of our Lord
One thousand eight hundred and nineteen.
Signed and sealed, by the within-
named Henry Pershouse, in the
presence of
HENRY PERSHOUSE. (L.S.)
JOHN SIMION,
Att',

page_text: AND BE IT REMEMBERED, that on the First day of February, in the
year of our Lord 1819, the aforesaid Henry Pershouse came before our said
Lord the King in His Chancery, and acknowledged the Indenture aforesaid,
and all and every thing therein contained and specified, in form above written.
And also the Indenture aforesaid was stamped according to the tenor of the
Statutes made for that purpose.
Inrolled the Third day of February, in the year of our Lord One
thousand eight hundred and nineteen.