IMPROVEMENTS IN MACHINERY OR APPARATUS FOR GRINDING CLAY AND SUCH LIKE SUBSTANCES
Year: 1866

page_text: LETTERS PATENT to Henry Goodfellow, of Madeley, in the County of
Stafford, Manager of Works, for the Invention of "IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR GRINDING CLAY AND SUCH LIKE SUBSTANCES."
Sealed the 18th June 1867, and dated the 22nd December 1866.
PROVISIONAL SPECIFICATION left by the said Henry Goodfellow at the
Office of the Commissioners of Patents, with his Petition, on the 22nd
December 1866.
I, HENRY GOODFELLOW, of Madeley, in the County of Stafford, Manager
of Works, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN MACHINERY OR APPARATUS FOR GRINDING CLAY AND SUCH LIKE SUBSTANCES,"
to be as follows:-
The object of this Invention is to grind clay and strong marls by the
means herein-after described, so that a great deal of labour now necessary
in the ordinary manner of preparing clay for the pugging mill may be
saved.
My object is also so to place the apparatus for grinding the clay that when
in a proper condition the material may fall into the pug mill beneath, and so
by the practical combination of the two the finished material may be prepared
at a very great reduction in cost.
The apparatus herein-after described is particularly designed to dispense
with the very expensive system of wheeling ground marl into large heaps to

page_text: be watered, sometimes turned over, afterwards tempered by the moulders, and
then wheeled back to be pugged. Upon an upright shaft is hung a conical
runner having cast upon it certain ribs or projections, which are placed in an
oblique direction. The said cone-shaped runner works within a strong metal
casing of suitable shape and size, which is provided internally with certain
other ribs or projections to correspond with those with which the runner is
furnished, except that these may be either placed obliquely or in a perpen-
dicular direction. The marl is supplied to the grinding apparatus from a
_platform fixed to the upper part of the cone-shaped casing, and it will be
obvious that as the runner revolves the clay will be ground and worked down-
wards to the bottom of the cone; from here it falls into the pug mill
underneath, but which is no part of my Invention, except so far as regards its
combination with the grinding mill and its position in respect of the said
grinding apparatus. Part of the metal casing within which the cone-shaped
runner revolves is made recessed, and set back from the runner; it is also
removable at pleasure, and by preference forms that part of the casing over
which the marl is supplied to the apparatus for grinding from the platform
herein-before described.
The object of this is to allow stones and other hard foreign. substances
which may be in the marl to remain in the said recessed space while the
clay is being ground until the casing being removed the stones may be taken
out.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Goodfellow in the Great Seal Patent Office on the
21st June 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
GOODFELLOW, of Madeley, in the County of Stafford, Manager of Works,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of December, in the year of our
Lord One thousand eight hundred and sixty-six, in the thirtieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Henry Goodfellow, Her special licence that I, the said Henry
Goodfellow, my executors, administrators, and assigns, or such others as I, 3
the said Henry Goodfellow, my executors, administrators, and assigns,

page_text: 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 "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR GRINDING CLAY AND SUCH
LIKE SUBSTANCES," upon the condition (amongst others) that I, the said Henry
Goodfellow, 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 Henry Goodfellow, 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 (that is to say) :-
The object of this Invention is to grind clay and strong marls by the
means herein-after described, so that a great deal of labour now necessary
in the ordinary manner of preparing clay for the pugging mill may be
saved.
. My object is also so to place the apparatus for grinding the clay that when
in a proper condition the material may fall into the pug mill beneath, and so
by the practical combination of the two the finished material may be prepared
at a very great reduction in cost.
The apparatus herein-after described is particularly designed to dispense
with the very expensive system of wheeling ground marl into large heaps to
be watered, sometimes turned over, afterwards tempered by the moulder, and
then wheeled back to be pugged. Upon an upright shaft is hung a conical
runner having cast upon it certain ribs or projections which are placed in an
oblique direction. The said cone-shaped runner works within a strong metal
casing of suitable shape and size, which is provided internally with certain
other ribs or projections to correspond with those with which the runner is
furnished, except that these may be either placed obliquely or in a perpen-
dicular direction. The marl is supplied to the grinding apparatus from n
platform fixed to the upper part of the cone-shaped casing, and it will be
obvious that as the runner revolves the clay will be ground and worked down-
wards to the bottom of the cone; from here it falls into the pug mill
underneath, but which is no part of my Invention, except so far as regards
its combination with the grinding mill and its position in respect of the said

page_text: grinding apparatus. Part of the metal casing within which the cone-shaped.
runner revolves is made recessed and set back from the runner; it is also..
removeable at pleasure, and by preference forms that part of the casing over
which the marl is supplied to the apparatus for grinding from the platform
herein-before described. The object of this is to allow stones and other hard
foreign substances which may be in the marl to remain in the said recessed
space while the clay is being ground until the casing being removed the stones
may be taken out. Motion may be given to the apparatus by any convenient
means.
That my Invention may be fully understood I have annexed Drawings
thereof which I now proceed to describe.
Fig. 1 is a vertical section, Fig. 2 an end elevation, and Fig. 3 shews a
horizontal section upon the line A, B, of my improved grinding mill in com-
bination with an ordinary pug mill.
(a) is the vertical shaft, carried at its upper end in a bearing (6) and at its
lower end in a step (c), adjustable for height by the wedge (d) and nut and.
screw (e); (f) is the conical runner, fixed upon the shaft (a), and having
cast upon it the ribs or projections (9) which are placed obliquely as shewn ;
(h) is the metal casing, within which the runner (f) revolves, and (i, i,) are
the ribs or projections cast within the casing (h), and which may be placed
either vertically or obliquely. A portion (k) of the casing (h) is removable
at pleasure, and forms a recess, or by means of the ribs (1) a series of recesses,
in which may remain the stones and other hard foreign substances which may
be in the marl when supplied from the platform (m); (n) is a door in the part
(k) through which the stones may be taken out, or the part (k) may be
removed for that purpose; after the clay has been ground by the runner (ƒ)
it falls into the pug mill (o) which is of the ordinary construction, and which
I need not further describe except to remark that its arms are fixed upon the
vertical shaft (a), so that both the grinding mill and the pug mill are driven
simultaneously and by the same gearing; the grinding mill being bolted to
the top of the pug mill by flanges (p) provided for that purpose; (r) is the
ordinary door through which the pugged clay is removed.
Having now described the nature of my said Invention, and the manner in
which the same is or may be performed, I desire it to be understood that what
I claim as the Invention to be protected by the herein-before in part recited
Letters Patent is,―
First, the improved machinery or apparatus for grinding clay and strong
marls, as herein-before described and illustrated in the Drawings hereunto
annexed.

page_text: Second, the combination of a machine or apparatus for grinding clay with
an ordinary pug mill, as herein-before described and set forth.
In witness whereof, I, the said Henry Goodfellow, have hereunto set
my band and seal, this Twentieth day of June, in the year of our
Lord One thousand eight hundred and sixty-seven.
Witness,
G. R. HOLLAND,
Patent Office,
Birmingham.
HENRY GOODFELLOW. (L.S.)