MACHINES OR INSTRUMENTS FOR THE PURPOSE OF MAKING LEADEN BULLETS AND OTHER SHOT
Year: 1806

page_text: TO ALL TO WHOM TO WHOM THESE PRESENTS SHALL
COME, I, WILLIAM BUNDY, of Pratt Place, Camden Town, in the
Parish of Saint Paneras, in the County of Middlesex, Mathematical
Instrument Maker, send grecting.
WHEREAS His most Excellent Majesty King George the Third
did, by His Letters Patent under the Great Seal of the United King-
dom of Great Britain and Ireland, bearing date at Westminster, the
First day of May, in the forty-sixth year of His reign, give and grant
unto me, the said William Bundy, my executors, administrators, and
assigns, His especial licence, that I, the said William Bundy, my
executors, administrators, and assigns, during the term of years therein
mentioned, should and lawfully might make, use, exercise, and vend,
within England, Wales, and the Town of Berwick-upon-Tweed, my
Invention of MACHINES OR INSTRUMENTS FOR THE PURPOSE OF MAKING
LEADEN BULLETS AND OTHER SHOT;" in which said Letters Patent there
is contained a proviso, obliging me, the said William Bundy, by an
instrument in writing under my hand and seal, to cause a particular
description of the nature of my said Invention, and in what manner the
same is to be performed, to be inrolled in His Majesty's High Court of
Chancery within six calendar months after the date of the said recited

page_text: Letters Patent, as in and by the same (relation being thereunto had)
may more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the
said William Bundy, do hereby declare that the nature of my said
Invention, and the manner in which the same is to be performed,
are particularly described and ascertained in the Drawings hereunto
annexed, and the following description thereof (that is to say):
Fig. 1, is the rolling machine. A, is a bar made of steel (or any
other substance fit for the same purpose) allowed to slide horizontally
in groves through the two uprights B, B, which are fixed upon the
immoveable bed C. D, D, are two pieces of steel, or any other proper
substance (which I will call moulds), of equal dimensions, one of which
is fixed to the bar A, and the other to the bed C, directly under, and
reversed to each other. The two moulds D, D, have a grove or flute
cut in each of them on the side facing the other, that is, upon the
lower side of that which is fixed to the bar A, and upon the upper side
of that upon the bed C, each being half a cylinder, and making, when
closed together at the two extremes F, F, a complete cylindrical hole,
the diameter of the ball intended to be made.
This hole is continued
regularly and equal from F to G, the edges of which then taper
gradually off to the extreme circumference of the cylinder, which ter-
minates at the ends of the moulds D. D, at H. H. Suppose then a
cylindrical piece of lead (or any other proper substance, the end of
which is seen at I) nearly of the same diameter (but not less) as the
cylindrical hole in the two moulds D, D), when closed together at the
two extremes F, F, is placed across and between the two moulds D, D.
at H, H; by drawing the bar A, A. A, horizontally by a parallel motion
to the right the cylindrical piece of lead will be rolled and gradu-
ally pressed and cut away by the sides of tho groves or flutes in the
two moulds D, D, which are made sufficiently sharp for that purpose;
by which means, being kept close to the extreme depths of the
groves or flutes, both at top and bottom, as marked at the dotted lines
K, by the time the same parallel motion is continued till the end
marked F. of the upper moulds, D is drawn forward, and reaches the
extreme end of the lower mould D, at F, a bullet comes out at this

page_text: end perfectly smooth and spherical, according as the two groves or
flutes in the two pieces of steel D. D, through which it rolls, are
correctly made. The bottoms of the groves or flutes, as shewn by the
dotted lines K, K, should be jagged at HI, H, and about two thirds the
distance from that to G, that the cylinder of lead may be rolled along
freely without slipping. L, L, are adjusting screws and nuts to keep the
bar A. to its proper situation. E, E, are adjusting screws to keep the
mould D, to its proper situation; there are two similar ones opposite
on the other side. N. N, are two pieces of hard brass, or any other
proper substance, upon which the adjusting screws L, L, press the har A.
Fig. 2, shews the end view of Fig. 1. C, is the bed upon which
the uprights B, B, are fixed, all of cast iron or any other proper sub-
stance. D, is the lower mould with the grove or flute which is hid
behind the upright, but here shewn by the dotted lines: D, the upper
moulds, similar and directly over it; A, the end of the bar A, A, A;
Ladjusting screw; N, the hard brass which the adjusting screws press
against the bar A: E, E. adjusting screws, which confine the lower
mould D.
Fig. 3, the ground plan of Fig. 1, supposing the bar A, to be
removed to shew the upper part of the lower mould D; C, the bed;
B, B, uprights; D. the steel with the grove or flute, the shaded part
shewing the grove or flute terminating in a point at H; E, E, E, E.
adjusting screws.
As it is rather difficult to describe the whole of this machine by the
above plans, I have added a perspective Drawing, Fig. 4. The the
different parts marked with letters corresponding with Fig. 1, which
will serve to point out more distinctly the nature of the two moulds
D. D.
The above descriptions. I conceive, will give a perfect explanation
of the fundimental principles of my Invention. The Figures 1, 2, 3.
are drawn to a scale, but it is not necessary to be confined exactly to
those dimensions.
Having explained the principles
machine, it will be obvious that
of my Invention of the foregoing
casting the lead or other proper
substance intended for the bullets in the first instance nearly to the

page_text: form in which it is intended to be finished there will be no necessity
for rolling the whole length of the two moulds D, D, but that a ball may
be equally as well formed by commencing at M, Fig. 1, or a little
either to the right or left, according as the ball is prepared, as by
beginning at the extreme. end H, H, Fig. 1. In this case I cast a
convenient number of balls together, as Fig. 5; the diameter of cach
must be the full size of the balls intended to be made, leaving a
convenient distance from each other. If the balls are to be made in
this manner the groves in D, D, should not terminate in points as
at II, Fig. 3, but those ends of the moulds should commence with the
shape, as shown at M, Fig. 1. As the process I have now described
will not be suflicient of itself to afford an adequate degree of pressure
to make the balls perfectly solid, which by the ordinary mode of casting
cannot be, and spherical, I press each of those balls, Fig. 5, previous to
rolling them in the machine, Fig. 1, with a fly or other powerful press
in dies suited to the size of the balls intended to be made. These dies
are best made of steel and hardened, being divided into two half
spheres, each of which is countersunk to receive the fin caused by the
first pressure, and prevent its being too thin or acute. This is clearly
pointed out in Fig. 6, which shows the upright section of the dies
closed together. A second pressure is then to be given upon those two
fins in the same dies, which is sufficient to answer the intended purpose
of making the bullets completely solid. Room must, of course, be left
in the dies to receive the axis connecting the balls together, as Fig. 5.
Hitherto I have only described a machine for working a single pair of
moulds, being the basis of my Invention; however, two or more moulds
may be worked abreast of each other, and a number of moulds likewise.
in length. Fig. 7, 8, 9, will shew a combination of those moulds, when
a number may be worked together in one machine, and a number of
those machines worked together by the same parallel motion. The
parallel motion which I use for this purpose I claim as my Invention,
and describe it as follows:-A, is a cog wheel hung upon the first shaft,
which gives motion to the wheel B, upon the second shaft; the wheel
B, gives motion to the wheel C, upon the third shaft: 1), F, are two
wheels with as many cogs in each as will be sufficient to work the rack

page_text: F, the distance required; F, is a rack with cogs at top and bottom;
G, H, are the ends of the shafts or axis upon which the wheels A, E,
and G, D, are hung. When the wheel A. is put in motion, it moves
the wheel E, and turns up the cogs in E, to the rack F, by which
means the rack F is moved forward until the cogs leave it; the wheel
A, at the same time moving the wheels B, C, the wheel D is moved
round, and engaging the cogs on the upper side of the rack moves the
rack back to its former position. Fig. 8, A is a bar sufficiently long to
contain four moulds, similar to those in Fig. 1; B, uprights; C, the
bed; a, a, b, b, c, c, d, d, moulds similar to those marked D, Fig. 1. lt
will be seen by the description given of the parallel motion, that it is
intended to work both to the right and left; begin with the two moulds
a, a, and b, b, if first worked to the right, and return with the two
moulds c, c, and d, d, the workman applying the lead, when properly
prepared, with each hand. Fig. 9, similar to Fig. 8, and worked at
the same time.
In witness whereof, I, the said William Bundy, have hereunto
set my hand and seal, the Thirtieth day of October, in the
year of our Lord One thousand eight hundred and six
WILLIAM BUNDY. (L.S.)
AND BE IT REMEMBERED, that on the Thirtieth day of October,
in the forty-seventh year of the reign of His Majesty King George
the Third, the said William Bundy came before our said Lord the
King in His Chancery, and acknowledged the Instrument aforesaid,
and all and every thing therein contained and specified, in form above
written
And also the Instrument aforesaid was stamped according
WILLIAM BUNDY. (L.S.)
AND BE IT REMEMBERED, that on the Thirtieth day of October,
in the forty-seventh year of the reign of His Majesty King George
the Third, the said William Bundy came before our said Lord the
King in His Chancery, and acknowledged the Instrument aforesaid,
and all and every thing therein contained and specified, in form above
And also the Instrument aforesaid was stamped according to
the tenor of the Statute made in the forty-fourth year of His said
Majesty's reign.
written
Inrolled the Thirtieth day of October, in the year of our Lord One
thousand eight hundred and six.