A NEW TCOL OR MOULD FOR MOULDING OR CASTING DISCS OR WHEELS REQUIRING TO HAVE LETTERS, CHARACTERS, NUMERALS, OR OTHER DEVICES OR DESIGNS FORMED
Year: 1869

page_text: LETTERS PATENT to Louis Hannart, of King Street, Clerkenwell,
in the County of Middlesex, for the Invention of "A NEW TCOL
OR MOULD FOR MOULDING OR CASTING DISCS OR WHEELS REQUIRING TO HAVE
LETTERS, CHARACTERS, NUMERALS, OR OTHER DEVICES OR DESIGNS FORMED
"
Sealed the 9th July 1800, and dated the 13th January 1869.
PROVISIONAL SPECIFICATION left by the said Louis Hannart at the
Office of the Commissioners of Patents, with his Petition, on the
13th January, 1869.
'1, LOUIS HANNART, of King Street, Clerkenwell, in the County of
Middlesex, do hereby declare the nature of the said Invention for "A
NEW. TooL OR MOULD FOR MOULDING OR CASTING DISCS OR WHEELS REQUIRING TO
HAVE LETTERS, CHARACTERS, NUMERALS, OR OTHER DEVICES OR DESIGNS FORMED
AROUND OR ABOUT THEIR CIRCUMFERENCES IN METAL OR OTHER MATERIALS," to
be as follows:-
The novelty of this Invention consists in so constructing a tool or
mould for the above purpose as that discs or wheels of metal or other

page_text: materials requiring to have letters, characters, numerals, or devices or
designs cast upon and around their peripheries may have the same
formed by casting from an engraved pattern in any quantities, instead
of having to engrave the circumference of each disc or wheel separately
by hand as heretofore practised. I propose to effect this by constructing
the aforesaid tool or mould in the following manner :-
The bottom of the tool consists of a circular flat plate of metal, upon
which rests loosely another circular plate of metal of smaller diameter
than the former plate. This smaller plate is formed with a fillet about
its upper edge to serve as a shoulder for the engraved dies to be forced
against, and thereby to bring the segmental dies close together so as to
form them into an entire circular die or mould. These segmental dies
are each connected by a screw to the bottom plate of the mould, the
heads of the said screws each taking into an oblique slot or groove
formed in the said plate. Grooves or slots are also formed in the filleted
plate above mentioned, radiating from the centre thereof, and into each
of these radial slots a pin takes, one of such said pins being fixed into
the under side of each segmental die. There is a handle or lever fixed
to each of the aforesaid plates for túrning such said plates partly round
on their axis of motion, the said axis consisting of a handle, the upper
end of which is formed with a shoulder and a screw pin, the top of
which is formed conical or pointed, and the barrel of the said screw is
formed plain or smooth, and such part passes through a hole of corre-
sponding size formed in the bottom plate. The upper plate has a screw
hole formed therein, into which is screwed the aforesaid pin. The outer
edges of the aforesaid dies are formed bevilling, and over and around
such part (when the dies are drawn inwards) a circular bevilled ring of
metal fits. The top of the tool or mould consists of a plate of metal
screwed to the aforesaid ring, and this plate of metal has a boss formed
on the top side thereof, having a hole through it of the size of the boss
of the disc or wheel that is to be cast. Space is also left between the
cover of the mould and the upper plate thereof corresponding to the
required thickness of the disc or wheel to be cast. A lever with a
smaller hole therein covers this hole, through which the molten metal
or other material is poured or run, and finally a screw clamp holds the
Soveral plates firmly together. The mould having been filled and the
casting made the operator then removes the clamp and also the top of
the mould; he then takes the two aforesaid horizontal handles, one in

page_text: cach hand, and pushing them in opposite directions effects the forcing
back of the segmental dies, and thus disengages them from the circum.
ference of the casting, the conical point before mentioned holding the
casting steady in the centre of the mould while the dies are being drawn
back. The upper plate aforesaid moving on its screwed axis rises
slighty and pushes the casting out of the mould. The parts of the
mould are then placed in their normal position and the operations
repeated as before, and so on in succession. I propose to force the
molten metal into the mould by a pump instead of pouring the metal
thereinto,
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Louis Hannart in the Great Seal Patent Office on
the 13th July 1869..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LOUIS
HANNART, of King Street, Clerkenwell, in the County of Middlesex,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of January, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Louis Hannart, Her special licence
that I, the said Louis Hannart, my executors, administrators, and
assigns, or such others as I, the said Lonis Hannart, 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 "A NEW TOOL OR
MOULD FOR MOULDING OR CASTING DISCS OR WHEELS REQUIRING TO HAVE LETTERS,
CHARACTERS, NUMERALS, OR OTHER DEVICES OR DESIGNS FORMED AROUND OR ABOUT
THEIR CIRCUMFERENCES IN METAL OR OTHER MATERIALS," upon the condition
(amongst others) that I, the said Louis Hannart, my executors or
administrators, by an instrument in writing under my, or their, or
one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was

page_text: 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 Louis Hannart, 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 and accompanying Drawing, that is to say :-
The novelty of this Invention consists in so constructing a tool
or mould for the above purpose as that discs or wheels of metal or
other materials requiring to have letters, characters, numerals, or
devices or designs cast upon and around their peripheries may have
the same formed by casting from an engraved pattern in any quantities,
instead of having to engrave the circumference of each disc or wheel
seperately by hand as heretofore practised. I propose to effect this
by constructing the aforesaid tool or mould in the following manner :-
The bottom of the tool consists of a circular flat plate of metal a,
upon which rests loosely another circular plate of metal b of
smaller diameter than the former plate. This smaller plate is formed
with a fillet c about its upper edge to serve as a shoulder for the
engraved dies to be forced against and thereby to bring the segmental
dies d, d, d, et cetera close together so as to form them into an entire
circular die or mould. These segmental dies d, d, are each connected
by a screw e to the bottom plate of the mould, the heads of the said
screws each taking into an oblique slot for groove formed in the
said plate, Grooves or slots g are also formed in the filletted plate
above mentioned radiating from the centre thereof, and into each of
these radial slots a pin h takes, one of such said pins being fixed
into the under side of each segmental die. There is a handle or lever i
fixed to each of the aforesaid plates for turning such said plates partly
round on their axis of motion, the said axis consisting of a handle j,
the upper end of which is formed with a shoulder and a screw pin k,
the top of which is formed conical or pointed, and the barrel of the said
screw is formed plain or smooth, and such part passes through a hole
of corresponding size formed in the bottom plate a. The upper plate b
has a screw hole formed therein, into which is screwed the aforesaid
pin k. The outer edges of the aforesaid dies are formed bevelling, and
over and around such part (when the dies are drawn inwards) a
circular bevilled ring of metal fits. The top of the tool or mould

page_text: consists of a plate of metal screwed to the aforesaid ring, and this plato
of metal has a boss m formed on the top side thereof, having a holo
through it of the size of the boss of the disc or wheel that is to be cast,
Space is also left between the cover of the mould and the upper
plate thereof corresponding to the required thickness of the disc or
wheel to be cast. A lever n with a smaller hole therein covers this hole,
through which the molten metal or other material is poured or run,
and finally a screw clamp holds the several plates firmly together.
The mould having been filled and the casting made, the operator then
removes the clamp and also the top of the mould; he then takes the
two aforesaid horizontal handles, one in cach hand, and pushing them in
opposite directions effects the forcing back of the segmental dies, and
thus disengages them from the circumference of the casting, the
conical point before mentioned holding the casting steady in the centre
of the mould while the dies are being drawn back. The upper plate
aforesaid moving on its screwed axis rises slightly and pushes the
casting out of the mould. The parts of the mould are then placed in
their normal position and the operations repeated as before and so on in
succession. I propose to force the molten metal into the mould by a
pump instead of pouring the metal thereinto.
Having now described the nature of my said Invention, and the
manner in which the same is to be performed, I would have it
understood that what I claim as my Invention is, the tool or mould
constructed with segmental dies operated by oblique slots substantially
in the manner and for the purposo herein-before shown and described.
In witness whereof, I, the said Louis Hannart, have herounto
set my land and seal, this First day of July, A.D. One thousand
eight hundred and sixty-nine.