Improvements in Roller Mills for Reducing Grain, Seeds, Wheat, Semolina, Middlings, Dunst, and the like in Flour Milling and other analogous Processes.
Year: 1892

page_text: Date of Application, 9th Mar., 1892
Complete Specification Left, 9th Jan., 1893—Accepted, 9th June, 1893
PROVISIONAL SPECIFICATION..
Improvements in Roller Mills for Reducing Grain, Seeds, Wheat,
Semolina, Middlings, Dunst, and the like in Flour Milling and
other analogous Processes.
I, JAMES HIGGINBOTTOM of 32 Seel Street, Liverpool in the County of
Lancaster, Milling Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention has for its object mainly the lessening of the care and attention
required from the operative miller in adjusting the rolls to do a definite work upon
the material passing through the rolls.
When my invention is applied to roller mills, I make the journals of a pair of
rolls to touch and. roll upon each other, also I make the added diameters of the
touching journals to be greater than the added diameters of the pair of rolls on
their working faces. In other words, when the journals are in contact, then there
is a space between the acting surfaces of the pair of rolls, and such space is made
larger or smaller according to the work required from the rolls. This invention is
applicable to either smooth or grooved rolls and to the journals of any number of
rolls placed parallel to each other.
By means of this invention the rolls can be made so that their working faces
cannot approach each other nearer than is required to accomplish the desired
work.
In carrying out this invention, I make the bearings with flanges and shoulders
on the journals, or projections on the bearings and grooves in the journals, also
spaces in the bearings arranged so that the journals are securely held and so that
the journals of a pair of rolls are in rolling contact with each other.
Dated this 8th day of March 1892.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Roller Mills for Reducing Grain, Seeds, Wheat,
Semolina, Middlings, Dunst, and the like in Flour Milling and
other analogous Processes.
I, JAMES HIGGINBOTTOM of 32, Seel Street, Liverpool in the County of
Lancaster, Milling Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
This invention has for its main object the lessening of the care and attention
required from the operative miller in adjusting the rolls to do a definite work upon
the material passing through the rolls, and also to make the work of such rolls
more uniform.
When my invention is applied to roller mills, I make the journals or some part
thereof of a pair of rolls to touch and roll upon each other, also I make the added
diameters of the touching journals greater than the added diameters of the rolls on
their working faces, consequently, when the journals are in contact, there is a space
between the acting surfaces of the rolls, and such space is made larger or smaller
according to the work required from the rolls. The invention is applicable to
either smooth or grooved rolls, to the journals of any number of rolls placed

page_text: verticaly
and in whatever plane they be arranged whether horizontal, vertical or inclined.
The invention is best described by aid of the accompanying drawings, in which,
Figure 1 is a transverse section through the bearings carrying the journals of the
rolls;
Figure 2 a longitudinal section through the bearings carrying the journals of the
rolls;
Figure 3 a plan of the rolls showing the journals and the bearings, the latter
in section; and
Figure 4 a longitudinal section through the bearing carrying one end journal of
a roll, showing an alternative arrangement for securely holding the journal for the
purpose of preventing end play.
Like letters relate to like parts on all the drawings.
Referring to these―
AA are spaces between the bearings of the rolls, B B' the bearings of two rolls
working together, C_end bearings to receive the thrust of the material passing
through the rolls, D D springs to permit the rolls to separate if any hard material
should pass through the rolls, E adjusting screw to press the rolls together and
adjust the pressure of these springs, H H framework carrying the rolls with their
bearings. In this framework the bearings are free to slide or move so as to allow
Baid bearings to adjust themselves to the journals. J and J1 are journals at the
ends of the rolls RR, K K ends of the rolls arranged to receive motion by means
of pulleys and belts, or by gearing in the ordinary manner, L outer casing or
hopper surmounting the rolls, R R a single pair of rolls working together, S space
between the working faces of the rolls R and R' exaggerated for convenience and
clearness of drawing, and W and W₁ working faces of the two rolls.
It is well known that in the operation of breaking wheat or other grain or
reducing semolina, middlings or the like upon rolls, that it is of importance to have
a means of setting the contiguous faces of surfaces of a pair of rolls at a given
distance apart for the purpose of obtaining a definite amount of breaking or
reduction upon the material passing through the rolls.
By this invention, the rolls can be turned or ground so as to have a pre-determined
distance apart, the screws E and springs D exerting sufficient pressure upon the
end bearings CC and through them upon the journals J, so as to cause these
journals to continue in rolling contact with each other.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improvements in roller mills for reducing grain, seeds, wheat, semolina'
middlings, dunst and the like, which consist in so constructing the journals of a
pair of rolls, that they shall be unitedly of slightly larger diameter than the united
diameters of the two working faces of the rolls, and shall run in actual contact,
whereby the rolls are kept an exact uniform distance apart, corresponding to the
difference between the united diameters of the two journals, and the united
diameters of the rolls.
2. The general arrangement and construction of a roller mill, substantially as and
for the purposes herein described.
D
T
1000
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham, and London, Patent Agents.