IMPROVEMENTS TUT DAD CRUSHING GRAIN
Year: 1855

page_text: LETTERS PATENT to William Wright and John Wright, both of Stamford,
in the County of Lincoln, Machinists, for the Invention of "IMPROVEMENTS
TUT
DAD CRUSHING GRAIN"
Sealed the 20th March 1856, and dated the 25th September 1855.
PROVISIONAL SPECIFICATION left by the said William Wright and John
Wright at the Office of the Commissioners of Patents, with their Petition,
on the 25th September 1855.
We, WILLIAM WRIGHT and JOHN WRIGHT, both of Stamford, in the County
of Lincoln, Machinists, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN MACHINERY FOR CRUSHING GRAIN " to be as follows:-
Our Invention consists in an improved machine, particularly applicable for
crushing barley, but which may be used for other grain. The grain to be
operated upon passes first between a fixed plate and a revolving roller, the
circumference of which has longitudinal and circular grooves to form teeth,
and then between a second fixed plate and another revolving roller, the teeth
of which are finer than those of the first roller. By this combination of
rollers and plates the grain to be operated upon in passing through the machine
is crushed to the required degree at one operation.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Wright and John Wright in the Great Seal Patent
Office on the 25th March 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
WRIGHT and JOHN WRIGHT, both of Stamford, in the County of Lincoln,
Machinists, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of September, in the year of our
Lord One thousand eight hundred and fifty-five, in the nineteenth year of
Iler reign, did, for Herself, Her heirs and successors, give and grant unto
us, the said William Wright and John Wright, Her special license that
we, the said William Wright and John Wright, our executors, administrators,
and assigns, or such others as we, the said William Wright and John
Wright, our 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, nse, 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 CRUSHING GRAIN," upon the condition (amongst others) that we,
the said William Wright and John Wright, our executors or administrators,
by an instrument in writing under our, 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 we, the said William Wright and John Wright,
do hereby declare the nature of our said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following Specification thereof, reference being had to the accompanying
Sheet of Drawings (that is to say):-
The nature of our said Invention consists in an improved combination of
revolving rollers and fixed plates, between which the grain to be crushed is
caused to pass for the purpose of crushing it to the required degree at one
operation. We have in the said Drawings given Figures for showing how our
improvements may be constructed, similar parts in both the views being
marked with similar letters of reference.
Fig. 1 is a sectional elevation of our improvements in machinery for crush-
ing grain; Fig. 2 is a side elevation of the same. a is the hopper, into which

page_text: 9,
the grain to be crushed is fed; b is the upper roller, between which and the
fixed plate c the grain is partially crushed; dis the lower roller, between which
and the fixed plate e the partially crushed grain passes. The circumferences
of the rollers and d are furnished with teeth, formed by making thereon
longitudinal and circular grooves, but the teeth of the roller d are smaller or
finer than those of the roller b; consequently the grain which had been par-.
tially crushed by passing between the upper roller and the plate c is com-
pletely crushed in passing between the roller d and the plate e. The plates c
and e are also furnished with teeth at the parts near the circumferences of the
rollers and d. The distance between the circumferences of the rollers b
and d, and the plates c and e, can be regulated by the set screws f and
which pass through the casing h. The rollers b and revolve in contrary
directions, as shown by the arrows in Fig. 1, and we prefer to make the lower
roller revolve faster than the upper one, in order that the same quantity of
grain may pass between each roller and its fixed plate. The brushes b¹ and d'
are for clearing the circumferences of the rollers and d. The mode of
communicating motion to the rollers is by means of the handle i on the
driving shaft j, bevel pinions k, wheel 1, and pinion m on the fly wheel shaft
n, to which is fixed the pinion o, gearing into the pinion p on the axle of the
upper roller b, the pinion p gearing into the pinion on the axle of the lower
roller d. A second handler fixed on the wheel 7 may also be used, but we
wish it to be understood that we do not limit ourselves to this mode of com-
municating motion to the rollers 6 and d, as any other convenient mode may
be adopted.
Having thus particularly described the nature of our Invention, and the
manner of performing the same, we declare that we claim the combination of
the revolving rollers 6 and d, and fixed plates c and e, when used in the manner
and for the purposes described.
In witness whereof, we, the said William Wright and John Wright,
have hereunto set our hands and seals, this Twenty-second day of
March, in the year of our Lord One thousand eight hundred and
fifty-six.
WILLIAM WRIGHT. (L.B.)
JOHN WRIGHT.
(L.S.)