IMPROVEMENTS IN MACHINERY FOR POUNDING, GRINDING, AND MIXING MOULDING SAND AND OTHER SUBSTANCES
Year: 1872

page_text: LETTERS PATENT to Jean Octave Hanctin, of No. 82, Boulevard
Sébastopol, Paris, in the Empire of France, Founder, for the
Invention of "IMPROVEMENTS IN MACHINERY FOR POUNDING, GRINDING,
AND MIXING MOULDING SAND AND OTHER SUBSTANCES."
Sealed the 20th September 1872, and dated the 4th April 1872.
I, JEAN OCTAVE HANCTIN, of No. 82, Boulevard Sébastopol, Paris,
in the Empire of France, Founder, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN MACHINERY FOR POUNDING, GRINDING,
AND MIXING MOULDING SAND AND OTHER SUBSTANCES," to be as follows:-
AND MIXING MOULDING SAND AND OTHER SUBSTANCES," to be as follows:
:-

page_text: made either of metal or granite, each crusher consisting of four or more
conical toothed stones or metal slabs, made in a single piece or united
by bolts and provided with grooves, the salient parts forming the conical
teeth, which in turning in the sand form furrows. The two crushers
are arranged loose on a vertical shaft in such a manner that in turning
the furrows made by one crusher are again divided by the second
whilst rotating. The object of this part of my Invention is to prevent
the sand forming into rolls (as is the case in the ordinary crushing
and mixing mills), and not getting properly reduced. As the crushers
are large the speed at their circumference is much greater than in
the centre, thereby producing a continual friction, the object being to
reduce the particles into paste without the necessity of first drying
the sand.
The second part of my Invention relates to the combination with the
above named crushers of two conical toothed scrapers mounted on the
vertical shaft bearing the crushers, the object being to keep the teeth of
the crushers clear of sand, and prevent the clogging of the grooves.
These scrapers are placed in front of each crusher and following the
direction they take in turning.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Jean Octave Hanctin in the Great Seal Patent 2
Office on the 27th September 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JEAN
OCTAVE HANCTIN, of No. 82, Boulevard Sébastopol, Paris, in the Empire
of France, Founder, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of April, in the year
of our Lord One thousand eight hundred and seventy-two, in the
thirty-fifth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Jean Octave Hanctin,
Her special licence that I, the said Jean Octave Hanctin, my
executors, administrators, and assigns, or such others as I, the said
Jean Octave Hanctin, my executors, administrators, and assigns, should

page_text: "'
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 FOR POUNDING,
GRINDING, AND MIXING MOULDING SAND AND OTHER SUBSTANCES,"
upon the
condition (amongst others) that I, the said Jean Octave Hanctin,
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 Jean Octave Hanctin, do hereby
3 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 Drawings, that
is to say :-
The first part of my Invention relates to the combination with the
ordinary crushing mills of two vertical grooved and multiple crushers
made either of metal or granite, each crusher consisting of four or
more conical toothed stones or metal slabs made in a single piece or
united by bolts and provided with grooves, the salient parts forming
the conical teeth, which in turning in the sand form furrows. The two
crushers are arranged loose on a vertical shaft in such a manner that
in turning the furrows made by one crusher are again divided by the
second whilst rotating. The object of this part of my Invention is
to prevent the sand forming into rolls (as is the case in the ordinary
crushing and mixing mills), and not getting properly reduced. As the
crushers are large the speed at their circumference is much greater
than in the centre, thereby producing a continual friction, the object
being to reduce the particles into paste without the necessity of first
drying the sand.
The second part of my Invention relates to the combination with the
above named crushers of two conical toothed scrapers mounted on the
vertical shaft bearing the crushers, the object being to keep the teeth of

page_text: the crushers clear of sand, and prevent the clogging of the grooves.
These scrapers are placed in front of each crusher and following the
direction they take in turning.
Fig. 1 is an elevation of a machine embodying my Invention; Fig. 2 is
a plan of the same.
A, A, are the two crushers in cast iron or granite, which rest on a
basin or circular trough B, also in cast iron, supported by wood or
masonry C. D is the horizontal iron shaft on which the crushers are
mounted loose, so as to turn independently of one another; this shaft D
is thicker than wide in the middle, and is engaged in a slide borne by
the vertical shaft E, the object being to admit of the crushers always
resting their natural weight on the sand, whether it is unequally placed
on one side or the other. The crushers are held in position by means of
keys. Motion is communicated to the horizontal shaft D, and thence to
the crushers by the vertical shaft E, at the end of which is placed an
88 toothed wheel G governed by a pinion H of 22 teeth keyed to the
small intermediary shaft i bearing the governing pullies J, one of which
is loose to stop the apparatus when the sand is prepared. The lower end
of the vertical shaft E is supported by the foot K, furnished with a hard
brass socket and a steel block. The upper part is sustained by an ordinary
bracket L fixed on a beam purposely arranged to receive it and the two
brackets of the governing shaft i. M, M, are the two scrapers above
mentioned. With the kind of bowl or trough B described it is desirable
to have a collector which leads the sand always to the middle, as in the
ordinary mills, as one of the crushers grazes the inside of the bowl and
the other the opposite side. On the vertical shaft E is also attached a
scraper, which is raised whilst the machine is working, and which is
lowered when the sand is sufficiently mixed, and whose object is to cause
its removal through the opening N made in the bottom of the trough or
bowl. When work is resumed this aperture is closed by the small
sheet iron door o. The speed of the shaft of the crushers is 25 turns a
minute
•

page_text: 2. The combination with the crushers A, A, of the conical toothed
scrapers M, M, substantially as and for the purposes herein set forth.
In witness whereof, I, the said Jean Octave Hanctin, have
hereunto set my hand and seal, this Twenty-fourth day of Sep-
tember, in the year of our Lord One thousand eight hundred and
seventy-two.
E. HÉBRE,
82, Boulevart Sebastopol,
Paris.
JEAN OCTAVE HANCTIN. (L.S.)