An Improvement in Roller Mills for Crushing Malt, Grain, and the like.
Year: 1889

page_text: Date of Application, 19th Oct., 1889
Complete Specification Left, 19th July, 1890-Accepted, 23rd Aug.. 1×90
PROVISIONAL SPECIFICATION.
An Improvement in Roller Mills for Crushing Malt, Grain, and
the like.
I, HENRY JOHN WORSSAM of Wenlock Road, City Road London, N. Engineer do
hereby declare the nature of this invention to be as follows:-
The rollers used for crushing malt grain and the like, if they are adjusted at such
distance apart that they crush sufficiently the larger grains, fail to crush sufficiently
the smaller grains, or if they are adjusted so closely together as to crush the smaller
grains, they have 100 much crushing effect on the larger grains. It is therefore usual
in the first place to separate the grains into sizes by means of a grader, and then to
treat the smaller grains in a separate roller mill. As the smaller grains constitute
only a small fraction of the whole quantity, the cost of such a separate mill and of
working it is objectionable.
My invention relates to means of making a single roller mill serve for crushing
grains of two sizes, a considerable quantity being of the larger size and a much less
quantity of the smaller size.
For this purpose, I make one of the pair of rolls in two parts, a long part which is
fixed on the shaft, and a short part at one end, which is not fixed on the shaft but is
connected to the fixed part by studs entering holes in which they have such freedom
as to allow of the short part being set a little eccentric to the shaft. The short part
is fitted to revolve on a stationary bush within it and between this bush and the shaft
which passes through it there is a brass which on its one side is rounded out to fit the
shaft and on its other side is inclined a little to the axis. By means of an external setting
screw this brass can be shifted longitudinally, acting as a wedge to move more or less
out of the centre of the bush on which the short part of the roll revolves.
Thus while the rolls, throughout the greater part of their length, are set at such a
distance apart as to crush properly the larger grains supplied to them from a broad
hopper or shoot a small part of the rolls at the one end, can by making the short
part of the one roll more or less eccentric, be adjusted to crush the smaller grains
supplied to this part from a separate narrow hopper or shoot.
Dated this 19th day of October 1889.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in Roller Mills for Crushing Malt, Grain, and
the like.
I, HENRY JOHN WORSSAM of Wenlock Road, City Road, London, N. 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:
The rollers used for crushing malt, grain and the like, if they are adjusted at such
distance apart that they crush sufficiently the larger grains, fail to crush sufficiently
the smaller grains, or if they are adjusted so closely together as to crush the smaller
grains, they have too much crushing effect on the larger grains. It is therefore usual
in the first place to separate the grains into sizes by means of a grader, and then to
treat the smaller grains in a separate roller mill. As the smaller grains constitute
only a small fraction of the whole quantity, the cost of such a separate mill and of
working it is objectionable.
My invention relates to means of making a single roller mill serve for crushing
Price 6d.

page_text: grains of two sizes, a considerable quantity being of the larger size and a much less
quantity of the smaller size.
For this purpose, I make one of the pair of rolls in two parts, a long part which is
fixed on the shaft, and a short part at one end which is not fixed on the shaft but is
connected to the fixed part by studs entering holes in which they have such freedom
as to allow of the short part being set a little eccentric to the shaft. The short part
is fitted to revolve on a stationary bush within it and between this bush and the shaft
which passes through it there is a brass which on its one sidie is rounded out to fit
the shaft and on its other side is inclined a little to the axis. By means of an external
setting screw this brass can be shifted longitudinally, acting as a wedge to move more
or less out of the centre the bush on which the short part of the roll revolves.
Thus while the rolls, throughout the greater part of their length, are set at such a
distance apart as to crush properly the larger grains supplied to them from a broad
hopper or shoot a small part of the rolls at the one end can, by making the short part
of the one roll more or less eccentric, be adjusted to crush the smaller grain supplied
to this part from a separate narrow hopper or shoot.
Fig.
of the accompanying drawings is a plan of a pair of rollers arranged according
to this invention.
Fig. 2 is a transverse section of the one roller on the line X X of Fig. 1.
One of the rollers A is an ordinary roller made in one piece, the other roller is made
in two parts B and C, of which B is fixed on the shaft, but C is a ring fitted
on a central bush 1) which has within it on one side a wedge shaped brass E.
By means of an external screw F this brass can be set more or less deep into the bush D
and can thus move the bush to the one side making it somewhat eccentric to the
shaft G. The ring (which fits on the bush D is thus made somewhat eccentric to
the part B of the roller, and in order to allow for this while it is driven by B, a pair
of driving pins II which are screwed into B, enter holes in C so much larger than
themselves as to permit the maximum eccentricity of C. The part B and the portion
of A facing it serve to crush the larger grains, while the ring C and the portion
of A facing it serve as a pair of rollers set closer together to crush the smaller
grains.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is
In a roller mill for crushing malt, grain and the like, constructing one of the pair
of rollers in two parts one of which by means of an internal bush and wedge brass
can be set somewhat eccentric to the shaft, substantially as and for the purpose
set forth.
Dafad this 19th day of July 1890
ABEL & IMRAY,
Agents for the Applicant.