IMPROVEMENTS IN GRINDING
Year: 1850

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ETIENNE
JOSEPH HANON VALCK, of the Kingdom of Belgium, Miller, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Thirty-first day of
January, One thousand eight hundred and fifty, in the thirteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Etienne Joseph Hanon Valck, my exors, admors, and assigns, Her
especial licence, full power, sole privilege and authority, that I, the said
Etienne Joseph Hanon Valck, my exors, admors, and assigns, and such others
as I, the said Etienne Joseph Hanon Valck, my exors, admors, or assigns,
should at any time agree with, and no others, from time to time and at all
times during the term of years therein expressed, should and lawfully might
make, use, exercise, and vend, within England, Wales, and the Town of
Berwick-upon-Tweed, my Invention of "IMPROVEMENTS IN GRINDING;" in
which said Letters Patent is contained a proviso that I, the said Etienne
Joseph Hanon Valck, should cause a particular description of the nature of
my said Invention, and in what manner the same is to be performed, by an
instrument in writing under my hand and seal, to be inrolled in Her said
Majesty's High Court of Chancery within six calendar months next and
immediately after the date of the said in part recited Letters Patent, as in
and by the same, reference being thereunto had, will more fully and at large
appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Etienne Joseph Hanon Valck, do hereby declare that the nature of my said

page_text: Invention, and the manner in which the same is to be performed, are fully
described and ascertained in and by the following statement thereof, refe-
rence being had to the Drawing hereunto annexed, and to the figures and
letters marked thereon, that is to say :-
DESCRIPTION OF THE DRAWING.
Figure 2 is the upper surface of a millstone, having perforations therein, as
shewn in section at Figure 3, and Figure 4 shews an under side view of the
stone, on which it will be seen are formed hollow channels, into which air
passes when the stone is rotating. The hollow channels have each two holes
through the stone, the one to receive a funnel A, shewn separately at Figure
1, the other hole to receive a tube D with a cock, Figure 8, or a hooded end,
Figure 7, or else a stopper, Figure 6. If the grain be very dry, the tubes D,
or some of them, are to be closed; but generally it is found desirable to have
a free passage, and to use the hooded end, Figure 7. The air in the rotation
of the stone is caught by the funnels, and descends down into the hollow
channels on the under surface of the stone.
I would remark that I am aware that funnels have been used as means of
.causing air to pass between millstones. I do not therefore claim the same,
the novelty of the Invention consisting of having combined therewith channels
and openings at their further ends, as explained.
In witness whereof, I, the said Etienne Joseph Hanon Valck, have
hereunto set my hand and seal, this Twenty-ninth day of July, in
the year of our Lord One thousand eight hundred and fifty.