IMPROVEMENTS IN ROLLER MILLS OR MACHINERY FOR CRUSHING ORES, SEEDS, GRAIN OR OTHER SUBSTANCES
Year: 1884

page_text: We, THOMAS WILLIAM BASSETT MUMFORD Manager to Mess James Gibbs and
Company of Victoria Docks in the County of Essex Chemical Manufacturers and
ROBERT MOODIE Engineer to the said firm do hereby declare the nature of said
Invention for "IMPROVEMENTS IN ROLLER MILLS OR MACHINERY FOR CRUSHING
ORES, SEEDS, GRAIN OR OTHER SUBSTANCES."
Our Invention consists in providing roller machinery for crushing ores seeds
grain or other substances with an arrangement whereby equal feeding and crushing
of the substances being treated is ensured and whereby the wear upon the rollers
may be equalized and the necessity for frequent renewal or refacing of the rollers
be obviated.
According to our Invention the material to be crushed is fed from the outlet of
the hopper or receptacle to the rollers by means of an inclined feeding plate or
surface which is provided with strips or ribs which radiate from a point behind the
outlet from the hopper which outlet is of a width less than the length of the
rollers. The series of strips or ribs extends at the end next the outlet from the
hopper through a space equal or about equal to the width of the said outlet and
the said strips or ribs radiate or diverge so that the series at the discharge ends
next the rollers extends through a space equal or about equal to the length of the
rollers so that the said ribs or strips (which stand at or about right angles to the
plate or surface) form separate channels extending throughout the length of
the plate and widening out as they approach the rollers. The said ribs or strips
are made of soft iron or steel or are so connected with the plate or surface that
they can be bent or turned to one side or the other so as to give an equalized or
regulated feed of the material to all parts of the peripheries of the rollers and thus
the wear of the rollers can be equalized and a much more perfect crushing effect of
the rollers upon the material be obtained. An equalized feed will also be ensured
notwithstanding considerable variation in the size of the pieces or particles of the
substance under treatment as the apertures at the outlet from the receptacle or
hopper are made much deeper than usual and are of a size to admit of the passage
CD 031

page_text: of the largest pieces or particles which are likely to present themselves and which
would with the arrangement cause an obstruction of the feed.
The Invention is applicable generally for feeding matters to the rollers by which
they are to be crushed.
Dated this 25th day of April 1884.
We THOMAS WILLIAM BASSETT MUMFORD Manager to Messieurs James Gibbs
and Company of Victoria Docks in the County of Essex Chemical Manufacturers
and ROBERT MOODIE Engineer to the said firm do hereby declare the nature of
said Invention for "IMPROVEMENTS IN ROLLER MILLS OR MACHINERY FOR
CRUSHING ORES SEEDS GRAIN OR OTHER SUBSTANCES," and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
Our Invention consists in providing roller machinery for crushing.ores seeds
grain or other substances with an arrangement whereby equal feeding and crushing
of the substances being treated is ensured and whereby the wear upon the rollers
may be equalised and the necessity for frequent renewal or refacing of the rollers
be obviated.
According to our Invention the material to be crushed is fed from the outlet of
the hopper or receptacle to the rollers by means of an inclined plate or surface
which is provided with strips or ribs which radiate from a point behind the outlet
from the hopper which outlet is of a width less than the width of the rollers. The
series of strips or ribs extends at the end next the outlet from the hopper through
a space equal or about equal to the width of the said outlet and the said strips or
ribs radiate or diverge so that the series at the discharge ends next the rollers
extends through a space equal or about equal to the width or length of the rollers
so that the said ribs or strips (which stand at or about right angles to the plate or
surface) for separate channels extending throughout the length of the plate and
widening out as they approach the rollers. The said ribs or strips are preferably
made of soft iron or steel and are so connected with the plate or surface that they
can be bent or turned to one side or the other so as to give an equalised or regulated
feed of the material to all parts of the peripheries of the rollers and thus the wear
of the rollers cau be equalised and a much more perfect crushing effect of the rollers
upon the material be obtained. An equalised feed will also be ensured not-
withstanding considerable variation in the size of the pieces or particles of the
substance under treatment as the apertures at the outlet from the receptacle or
hopper are made much deeper than usual and are of a size to admit of the passage
of the largest pieces or particles which are likely to present themselves and which
would with the ordinary arrangement cause an obstruction of the feed.
The Invention is applicable generally for feeding matters to the rollers by which
they are to be crushed.

page_text: Figure 1 of the accompanying Drawing represents in front elevation and
Figure 2 in transverse section an apparatus constructed according to our Invention
but we do not limit ourselves to the precise details shown."
A is the hopper from which the substance to be crushed is delivered and B are
the crushing rollers. C is a plate extending from the outlet of the hopper to the
rollers. The said outlet is of a width less than the length of the rollers. The
strips D divide the plate C into a series of channels which radiate or widen
out as they approach the crushing rollers-E E represent filling or distance pieces
upon a bolt for securing the strips in position and F is a bar which can be raised
and lowered and is provided with notches f into one or other of which the strips
can be placed to equalise the feed as required.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is :-
In roller mills or machinery for crushing ores seeds grain or other substances
the employment for feeding the substances from the hopper or receptacle to the
rollers of a plate or surface provided with radiating ribs strips or projections
arranged substantially as and for the purpose herein before described.
Dated this Fourth day of Santambor 1001
THOMAS WILLIAM BASSETT MUMFORD.
ROBERT MOODIE.