IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR SUPPORTING AND REGULATING THE BEARINGS OF ADJUSTABLE ROLLERS OF CRUSHING AND KIBBLING MILLS."
Year: 1880

page_text: LETTERS PATENT to Henry Chandler and James Gadsby Richmond, both of
Salford, in the County of Lancaster, Agricultural Implement Makers, for an
Invention of "IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR
SUPPORTING AND REGULATING THE BEARINGS OF ADJUSTABLE ROLLERS OF
CRUSHING AND KIBBLING MILLS."
PROVISIONAL SPECIFICATION left by the said Henry Chandler and James
Gadsby Richmond at the Office of the Commissioners of Patents on the 26th
June 1880..
HENRY CHANDLER and JAMES GADSBY RICHMOND, both of Salford, in the County
of Lancaster, Agricultural Implement Makers. "IMPROVEMENTS IN THE METHOD
OF AND APPARATUS FOR SUPPORTING AND REGULATING THE BEARINGS OF
ADJUSTABLE ROLLERS OF CRUSHING AND KIBBLING MILLS."
In performing our Invention we make use of a bracket, which carries the
bearings of the adjustable roller; this bracket is placed inside the framing of the
mill, and the two sides of the bracket below the bearings are prolonged downwards,
and into a hole in one side near the bottom a stud or projection fits, which is fixed
on the mill frame, and a movable stud held in a slot in the frame fits into a hole
in the other side of the bracket. The bracket swings radially on these studs, and
by the movable stud the bracket carrying the roller is adjusted, when the roller is
worn, to keep it parallel with the roller that revolves in fixed bearings. The front
horizontal portion of the bracket which connects the sides is provided with a
projection in which is an open slot; through this slot a rod screwed at each end
and carrying a spiral spring is passed. The upper portion of this rod passes
this
through the front of the mill frame, and is adjusted by a screwed hand wheel;
hand wheel is tightened when it is desired to bring the rollers closer together, and
the spring (which gives the requisite pressure for crushing or kibbling) comes into
action when the grain or other substance passes between the rollers. On the rod
below the mill frame is a fixed collar, against which a small set screw in the frame
comes to prevent the rollers from being brought into contact with each other, which

page_text: would occur if the rod and spring were raised too high by the hand wheel; the
rod above the hand wheel is provided with a lock nut; on the portion of the rod
below the slot in the bracket a strong spiral spring is held between two loose
collars by a nut on the bottoin of the rod. The slot in the projection on the front
of the bracket rests between the fixed collar and the loose collar on the top of the
spring, and any pressure required to crush or kibble the grain or other substance
passing between the rollers is given by compressing or slackening the spring by
means of the nut on the bottom of the rod; the grain or other substance tends to
force the adjustable roller away from the fixed roller, thus depressing the front
horizontal portion of the bracket so that it bears on the loose collar on top of the
spring, and the resistance of the spring gives the pressure for crushing or kibbling,
and the spring also allows any hard substance to pass through the rollers without
injury to them or to the working parts of the mill. The rod is square where it
passes through the frame and the bracket, and the square shoulder keeps the loose
collar on top of the spring from rising too high when the nut at the bottom is
tightened.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Chandler and James Gadsby Richmond in the Great Seal
Patent Office on the 23rd December 1880.
HENRY CHANDLER and JAMES GADSBY RICHMOND, both of Salford, in the County
of Lancaster, Agricultural Implement Makers. "IMPROVEMENTS IN THE METHOD
OF AND APPARATUS FOR SUPPORTING AND REGULATING THE BEARINGS OF
ADJUSTABLE ROLLERS OF CRUSHING AND KIBBLING MILLS."
In performing our Invention we make use of a bracket, which carries the bearings
of the adjustable roller; this bracket is placed inside the framing of the mill, and
the two sides of the bracket below the bearings are prolonged downwards, and into
a hole in one side near the bottom a stud or projection fits, which is fixed on the
mill frame, and a moveable stud held in a slot in the frame fits into a hole in the
other side of the bracket. The bracket swings radially' on these studs, and by
the moveable stud the bracket carrying the roller is adjusted when the roller is
worn to keep it parellel with the roller that revolves in fixed bearings.. The front
horizontal portion of the bracket which connects the sides is provided with a
projection in which is an open slot; through this slot a rod screwed at each end
and carrying a spiral spring is passed. The upper portion of this rod passes
through the front of the mill frame, and is adjusted by a screwed hand wheel; this
hand wheel is tightened when it is desired to bring the rollers closer together, and
the spring (which gives the requisite pressure for crushing or kibbling) comes
into action when the grain or other substance passes between the rollers. On the
rod below the mill frame is a fixed collar, against which a small set screw in the
frame bears to prevent the rollers from being brought into contact with each other,
which would occur if the rod and spring were raised too high for the hand wheel;
the rod above the hand wheel is provided with a lock nut; on the portion of the
rod below the slot in the bracket a strong spiral spring is held between two loose
collars by a nut on the bottom of the rod. The slot in the projection on the front
of the bracket rests between the fixed collars and the loose collar on top of the
spring, and any pressure required to crush or kibble the grain or other substance
passing between the rolls is given by compressing or slackening the spring by
means of the nut on the bottom of the rod; the grain or other substance tends to
force the adjustable roller away from the fixed roller, thus depressing the front
horizontal portion of the bracket so that it bears on the loose collar on top of the
spring, and the resistance of the spring gives the pressure for crushing or kibbling,
and the spring also allows any hard substance to pass through the rollers without
injury to them or to the working parts of the mill. The rod is square where it
passes through the frame, and the bracket and the square shoulder keeps the loose
collar on top of the spring from rising too high when the nut at the bottom is
tightened; and in order that our Invention may be fully understood and readily
carried into effect, we will describe the accompanying Sheet of Drawings, reference
being had to the figures and letters marked thereon.
Figure 1 is an elevation in section of part of a crushing or kibbling mill, to
which our Invention is applied, and
Figure 2 is a plan of the same.
a is the frame of the mill.
.b' is a roller on the shaft b, which rotates in the fixed bearings c.
dis the adjustable roller on the shaft d, which rotates in the bearings c¹ on the
bracket e; this bracket swings on the fixed stud fl and on the adjustable stud f;
both these studs are held by the frame a, in which is a slot for the stud f.

page_text: g is the rod (screwed at each end) which passes through the slot in the front
portion of the bracket e and through the top of the frame a.
is a spiral spring on the rod g,.and
i, i, are two loose collars on g.
jis a nut which is screwed or unscrewed to tighten or slacken the spring h.
k is a fixed collar on the rod g.
is a hand wheel, the boss of which forms a nut on the rod g.
m is a winged lock nut.
n is a set screw which passes through the top of the frame a, and bears against
the fixed collar k to prevent the rod g and the front of the bracket e being raised
too high, which would bring the rollers b and d¹ into contact with each other.
Having stated the nature of our Invention, and described the manner of
performing the same, we would have it understood that we do not limit ourselves
to the exact details given, as the same may be varied or modified, and we declare
that we claim,-
The bracket c, the rod g, and the spring h for regulating the pressure of the
adjustable roller, substantially as shewn and described.
In witness whereof, I, the said Henry Chandler, for myself and on behalf of
the said James Gadsby Richmond, have hereunto set my hand and seal,
this Twenty second day of December, One thousand eight hundred and
eighty.
HENRY CHANDLER. (L.S.)