Improvements in Roller Mills for Grinding Grain and other Substances.
Year: 1890

page_text: Date of Application, 13th Nov., 1890
Complete Specification Left, 10th Aug., 1891-Accepted, 12th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in Roller Mills for Grinding Grain and other
Substances.
I PATRICK GILLEN, of 36 Portland Place, Leamington, in the County of
Warwick, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in roller mills for grinding grain and
other substances; it has for object to provide a very sensitive and effective
adjustment of the rolls; also to prevent the rolls coming together and being
thereby injured, as now often occurs from nuts, hand wheels, or other adjustments
being left or becoming loose; and it consists in combining with the ordinary
spring adjustment by which the rolls are permitted to yield for the passage of any
hard substance, a second spring adjustinent, in connection with the first by a vertical
rod, as I will proceed to explain by reference to the accompanying drawing, which
is an end elevation of a machine embodying my invention.
A is the upper roll spindle; B the lower roll spindle; C a vertical rod
screwed at its upper part and passing up through the top plate L of the machine.
A hand wheel D similarly screwed is fitted upon the upper portion of the vertical
rod in such a way that upon turning this hand wheel the vertical rod is caused to
rise or fall, and with it the bearing supporting the lower roll. Immediately
beneath this top plate and around the vertical rod is a helical spring F, suitable
lock nuts G upon the rod serving to regulate the amount of compression as required.
The lower end of the vertical rod C is connected in a similar way to the lower
roll bearing, and a fixed collar K upon the rod serves to regulate the amount of
compression given by the nuts I to the spring H. M is a rod with eccentric
for compressing spring H and throwing rolls apart without interfering with the
spring F.
The lower spring H is arranged in the ordinary way for permitting the rolls to
yield for the passage of any hard substance and it is the combination therewith of
my arrangement of spring F which gives the sensitive adjustment above mentioned
and constitutes the main feature of my invention.
Dated this Thirteenth day of November 1890.
COMPLETE SPECIFICATION.
Improvements in Roller Mills for Grinding Grain and other
Substances.
I PATRICK GILLEN, of 36 Portland Place, Leamington, in the County of
Warwick, 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 relates to improvements in roller mills for grinding grain and
other substances; it has for object to provide a very sensitive and effective adjust-
ment of the rolls; also to prevent the rolls coming together and being thereby
injured, as now often occurs from nuts, hand wheels, or other adjustments being left
or becoming loose; and it consists in combining with the ordinary spring adjustment
by which the rolls are permitted to yield for the passage of any hard substance, a
Price 6d1

page_text: second spring adjustment, in connection with the first by a vertical rod, or its
equivalent, as I will proceed to explain by reference to the drawing left with the
Provisional Specification, which is an end elevation of a machine embodying my
invention.
A is the upper roll spindle; B the lower roll spindle; C a vertical rod screwed
at its upper part and passing up through the top plate L of the machine. A
hand wheel D similarly screwed is fitted upon the upper portion of the vertical
rod in such a way that upon turning this hand wheel the vertical rod is caused to
rise or fall, and with it the bearing supporting the lower roll. The strain of the
spring F, between the lock nuts G and the plate L on the hand wheel D is sufficient
to lock this latter in position without the aid of the ordinary nuts or ratchets.
Immediately beneath this top plate and around the vertical rod is a helical spring F,
suitable lock nuts G upon the rod serving to regulate the amount of compression
as required. The lower end of the vertical rod C is connected in a similar way to
the lower roll bearing, and a fixed collar K upon the rod serves to regulate the
amount of compression given by the nuts I to the spring H. M is a rod with
eccentric for compressing spring H and throwing rolls apart without interfering
with the spring F.
The lower spring H is arranged in the ordinary way for permitting the rolls
to yield for the passage of any hard substance and it is the combination therewith
of my arrangement of spring F which gives the sensitive adjustment above
mentioned and constitutes the main feature of my invention.
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. In roller mills for grinding grain and other substances, the application to the
rolls of two combined spring adjustments substantially as described.
2. In a roller mill for grinding grain and other substances, the vertical rod C
having the helical spring F and supporting the bearing of the lower roll, in
combination with the spring H, the whole constructed and arranged to operate
substantially as hereinbefore described by reference to the drawings.
3. The rod M with eccentric in combination with the spring H as and for the
purpose specified.
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