IMPROVEMENTS IN THE MEANS AND APPARATUS POR PULVERIZING SUBSTANCES, MORE PARTICULARLY APPLICABLE TO THE PULVERIZATION OF MATERIALS FOR PORCELAIN PASTE
Year: 1874

page_text: ETTERS PATENT to Johan Robert Alsing, Proprietor of Mines, of
Stockholm, in the Kingdom of Sweden, but at present residing at
Finsbury Square, in the County of Middlesex, for the Invention of
"IMPROVEMENTS IN THE MEANS AND APPARATUS POR PULVERIZING SUBSTANCES,
MORE PARTICULARLY APPLICABLE TO THE PULVERIZATION OF MATERIALS FOR
PORCELAIN PASTE."-Partly a communication from abroad by William
Edwards, of Copenhagen, in the Kingdom of Denmark.
ealed the 19th January 1875, and dated the 20th July 1874.
PROVISIONAL SPECIFICATION left by the said Johan Robert Alsing
at the Office of the Commissioners of Patents, with his Petition,
on the 20th July 1874.
I, JOHAN ROBERT ALSING, Proprietor of Mines, of Stockholm, in the
Kingdom of Sweden, but at present residing at Finsbury Square, in the
County of Middlesex, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN THE MEANS AND APPARATUS FOR PULVERIZING Substances,
MORE PARTICULARLY APPLICABLE TO THE PULVERIZATION OF MATERIALS FOR PORCELAIN
PASTE," partly my own and partly the result of a communication to me
from abroad by William Edwards, of Copenhagen, in the Kingdom of
Denmark, to be as follows :-
This Invention relates to certain improvements on a former Invention,

page_text: for which Letters Patent were applied for on the 23rd October 1867,
Numbered 2975, for "Improvements in the Means and Apparatus for
Pulverizing Substances, more Particularly Applicable to the Pulveriza-
tion of Materials for Porcelain Paste." And the features of novelty
which constitute this present Invention consist in constructing the drum
or cylinder in which are placed the materials to be pulverized in the
following manner: An outside casing or cylinder of sheet iron is made,
to which is screwed a lining of wood, care being taken that the screws
shall not pass entirely through the wood. Against the said lining of
wood are suitably cemented (by preference with a mixture of glue and
plaster of Paris) small slabs of porcelain, glass, or earthenware, the said
slabs being made of a suitably curved shape in order that they shall
exactly fit the circumference of the aforesaid drum or cylinder and
present a smooth surface. The cylinder is furnished with one or more
apertures, by which the material to be pulverized is introduced with a
suitable quantity of shingles or pebbles about the size of a pigeon's egg.
Rotary motion is then applied for, say, about 5 hours, when the material
will be found to be reduced to a fine powder, the door which closes the
aperture is taken away and a grating composed of longitudinal bars is
put in its place; the cylinder is then caused to revolve, and the pul-
verized material will fall out through the said grating, leaving the
shingles or pebbles behind. The cylinder rotates inside an outer casing
furnished with a-hopper, underneath which is placed a small waggon or
tram car, which is conveyed to a tank containing water, into which the
pulverized material is allowed to fall by opening the car, the water at
once catching the fine powder and preventing waste.
By the above construction of the drum or cylinder the materials
cannot come in contact with the iron, as was frequently the case with
the cylinder constructed according to the Specification of the aforesaid
former Patent:.
SPECIFICATION in pursuance of the conditions of the Letters Patent,:
filed by the said Johan Robert Alsing in the Great Seal Patent:
Office on the 20th January 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHAN-
ROBERT ALSING, Proprietor of Mines, of Stockholm, in the Kingdom of 35

page_text: Sweden, but at present residing at Finsbury Square, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent bearing date the Twentieth day of July, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs, and successors,-
give and grant unto me, the said Johan Robert Alsing, Her special
licence that I, the said Johan Robert Alsing, my executors, admini-
_strators, and assigns, or such others as I, the said Johan Robert Alsing,
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
"IMPROVEMENTS IN THE MEANS AND APPARATUS FOR PULVERIZING SUBSTANCES,
MORE PARTICULARLY APPLICABLE TO THE PULVERIZATION OF MATERIALS FOR -
PORCELAIN PASTE," partly my own and partly the result of a communi-
cation to me from abroad by William Edwards, of Copenhagen, in the
Kingdom of Denmark, upon the condition (amongst others) that I,'
the said Johan Robert Alsing, 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 Johan Robert Alsing, 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 :-
This Invention relates to certain Improvements on a former Invention,
for which Letters Patent were applied for on the 23rd October 1867,
Numbered 2975, for "Improvements in the Means and Apparatus for
Pulverizing Substances, more Particularly Applicable to the Pulveriza-
tion of Materials for Porcelain Paste." And the features of novelty
which constitute this present Invention consist in constructing the drum.
or cylinder in which are placed the materials to be pulverized in the
following manner:-An outside casing or cylinder of sheet iron is made,.
:

page_text: suitable bearings F, F¹; G is an aperture closed by a door H, and
through which the material to be pulverized is introduced with a suitable
quantity of small flint stones or pebbles. Rotary motion is applied for
from 3 to 5 hours, when the material will be found to be reduced to a
fine powder. The door His removed and a grating composed of longi-
tudinal bars, Figure 3, is put in its place, the cylinder is then caused to
revolve, and the pulverized material will fall out through the grating
aforesaid, leaving the flint stones or pebbles behind; K, -is an outer
casing furnished with a hopper L, underneath which is placed a small
waggon M, which is conveyed to a tank containing water, into which
the pulverized material is allowed to fall by opening the waggon M.
Having now described and set forth the nature and object of my said
Invention for " Improvements in the Means and Apparatus for Pul-
verizing Substances, more Particularly Applicable to the Pulverization
of Materials for Porcelain Paste," I would remark in conclusion that
what I claim as this Invention, and desire to secure by the herein-before
in part recited Letters Patent is, the means and apparatus for pul-
verizing materials, substantially as described and represented.
In witness whereof, I, the said Johan Robert Alsing, have here-
unto set my hand and seal, this Fourth day of December, in the
year of our Lord One thousand eight hundred and seventy-
four
5
Witness,
H. W. KONORO,
65, Fbg. Poissonnière,
Paris.
A. CATILLON,
Same Address.
J. R. ALSING. (L.s.)