IMPROVEMENTS IN MILLS OR MACHINERY FOR GRINDING, REDUCING, AND PULVERIZING
Year: 1859

page_text: LETTERS PATENT to Gilbert Daniel Jones, of Clerkenwell, in the County
of Middlesex, Engineer, for the Invention of "IMPROVEMENTS IN MILLS
OR MACHINERY FOR GRINDING, REDUCING, AND PULVERIZING."
Sealed the 22nd November 1859, and dated the 24th May 1859.
PROVISIONAL SPECIFICATION left by the said Gilbert Daniel Jones at
the Office of the Commissioners of Patents, with his Petition, on the
24th May 1859.
I, GILBERT DANIEL JONES, of Clerkenwell, in the County of Middlesex,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN MILLS OR MACHINERY FOR GRINDING, REDUCING, AND PULVERIZING," to be
as follows:-
My Invention relates to grinding, reducing, and pulverizing, where those
operations are performed by runners free to revolve round their own axes, and
caused to revolve in and round a bed. And my Invention consists in forming
the bottom or grinding surfaces of the runners conical, in the form of an
inverted cone, and in forming the bed with corresponding conical surfaces.
My Invention also consists in surrounding the mill, constructed as above
described, with a cylinder of wire gauze or open cloth. The runners may be

page_text: of any desired number, but I find two or three to be the most advantageous.
The driving shaft carries a horizontal cross head, from which vertical arms
depend, and these arms form the axes round which the runners are free to
revolve, and whereby they are carried round the conical bed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Gilbert Daniel Jones in the Great Seal Patent Office on the
24th November 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GILBERT
DANIEL JONES, of Clerkenwell, in the County of Middlesex, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of May, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-second year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Gilbert Daniel Jones, Her special licence that I, the said Gilbert
Daniel Jones, my executors, administrators, and assigns, or such others as
I, the said Gilbert Daniel Jones, 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 " IM-
PROVEMENTS IN MILLS OR MACHINERY FOR GRINDING, REDUCING, AND PULVERIZING,"
upon the condition (amongst others) that I, the said Gilbert Daniel Jones,
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 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 Gilbert Daniel Jones, 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 thereof, reference being had to the Drawings hereunto
annexed, that is to say :-
My Invention relates to grinding, reducing, and pulverizing, where those

page_text: operations are performed by runners free to revolve round their own axes, and
caused to revolve in and round a bed. And my Invention consists in forming
the bottom or grinding surfaces of the runners conical, in the form of an
inverted cone, and in forming the bed with corresponding conical surfaces.
of
My Invention also consists in surrounding the mill, constructed as above
described, with a cylinder of wire gauze or open cloth. The runners may be
any desired number, but I find two or three to be the most advantageous.
Figure 1 of the accompanying Drawings is a sectional elevation; and
Figure 2, a plan of half of a mill constructed according to my Invention. A is
a platform supported by pillars B, B, which rest on a bed C. The platform
A carries a bed D, the surface of which is formed conical, to correspond with
the shape of the lower surface of the runners E, E, one of which is shewn
detached at Figure 3. F, F, are metal rods fixed in a hole formed in the
centre of each of the runners; G, G, are vertical sockets, into which the rods
F, F, fit loosely. These sockets are continuations of arms G', G¹, formed in a
piece with the cross head H, to which the driving shaft I is keyed; J is a pulley
fast. on the shaft I, round which a driving belt passes. Upon rotary motion
being communicated to the driving shaft, the runners are caused to revolve
round the mill, and at the same time each runner also revolves round its own
axis. K is a cylinder of wire gauze (part only of which is shewn at Figure 1)
that surrounds the apparatus, in order to prevent the materials being ground
from flying out of the mill; L, L, L, are scrapers (one set of which is shewn
separately at Figure 4) attached to a rod M fixed to the shaft I. These
scrapers are arranged to fit the conical surfaces of the bed B, and the rod
which carries them being attached to the shaft I, they follow the runners
E, E, in their course round the bed. Figure 5 is a view, in sectional eleva-
tion, of the mill just described fixed in a frame. N is a hopper fitted to the
upper part of the frame O; it communicates with a pipe P leading to a second
hopper N', which guides the materials to be ground to the bed D to be
operated on by the conical runners E, E; R is a case surrounding the bed D
and the lower part of the wire gauze K. All the other parts of this mill are
similar to those just described, the same letters of reference referring to like
parts in all the Figures.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim as my improve-
ments in mills or machinery for grinding, reducing, and pulverizing,-
First, constructing the bottom or grinding surfaces of the runners conical,
in the form of an inverted cone, and the bed in and around which they revolve

page_text: with corresponding conical surfaces, substantially in manner herein-before
described and illustrated in the accompanying Drawings.
Second, surrounding such mills with a cylinder of wire gauze or open cloth,
as herein-before described.
with corresponding conical surfaces, substantially in manner herein-before
described and illustrated in the accompanying Drawings.
Second, surrounding such mills with a cylinder of wire gauze or open cloth,
as herein-before described.
In witness whereof, I, the said Gilbert Daniel Jones, have hereunto set
my hand and seal, this Twenty-first day of November, One thousand
eight hundred and fifty-nine.
G. D. JONES. (L.S.)