Improvements in Safety Hydraulic Bearings for Sugar-cane Mills.
Year: 1892

page_text: Date of Application, 16th Nov., 1892
Complete Specification Left, 10th Aug., 1893-Accepted, 16th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Safety Hydraulic Bearings for Sugar-cane Mills.
I, DUNCAN STEWART, of The London Road Iron Works, Glasgow in the County
of Lanark, North Britain, Engineer, do hereby declare the nature of this invention
to be as follows, that is to say :-
.
My said invention relates to bearings for sugar-cane mills of the kind described
in the Specification of my Patent No. 4306 of 1884 and comprises further improve-
ments in the details by means of which pressure is applied to the bearings, and
through the bearings to the rolls, such pressure being limited to a suitable amount,
and the rams of the cylinders yielding whenever from an excess of canes being
passed through the rolls or other cause, the resistance increases beyond what is
desirable such yielding saving the machine from breaking. My present invention
has for its object to adjust and limit the movement of the ram and to provide for
compensating for the wearing of the iron or steel plate which bears directly on the
bearing brass and of the end of the ram which bears on that plate.
In carrying out my invention I make the piston which works in the hydraulic
cylinder with a rod or rods extending in both directions the outer rod or part
passing out through a stuffing box or packing in the cover of the cylinder. The
outer end of the rod, which projects beyond the cylinder cover has screwed on it
a jam nut which can be adjusted so as by bearing on the cylinder cover to limit
the movement of the piston and rod or ram and prevent it from pressing the bearing
brass too far inwards. When wear takes place the jam nut can be easily adjusted
so as to allow the end of the ram to project further inwards and thus compensate
for the wear, the cylinder being made of such a size as to allow of the further
movement required towards the bearing.
Dated this Fifteenth day of November 1892.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in Safety Hydraulic Bearings for Sugar-cane Mills.
I, DUNCAN STEWART, of The London Road Iron Works, Glasgow, in the County
of Lanark, North Britain, 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, that is to say:-
My said invention relates to bearings for sugar-cane mills of the kind described
in the Specification of my Patent No. 4306 of 1884 and comprises further improve-
ments in the details by means of which pressure is applied to the bearings, and
through the bearings to the rolls, such pressure being limited to a suitable amount,
and the rams of the cylinders yielding whenever from an excess of canes being
passed through the rolls or other cause, the resistance increases beyond what is
desirable such yielding saving the machine from breaking. My present invention
has for its object to adjust and limit the movement of the ram and to provide for
compensating for the wearing of the iron or steel plate which bears directly on the
bearing brass and of the end of the ram which bears on that plate.
In carrying out my invention I make the piston which works in the hydraulic
cylinder with a rod or rods extending in both directions the outer rod or part
passing out through a stuffing box or packing in the cover of the cylinder. The
outer end of the rod, which projects beyond the cylinder cover has screwed on it
[P1

page_text: a jam nut which can be adjusted so as by bearing on the cylinder cover to limit
the movement of the piston and rod or rain and prevent it from pressing the bearing
brass too far inwards. When wear takes place the jam nut can be easily adjusted
so as to allow the end of the ram to project further inwards and thus compensate
for the wear, the cylinder being made of such a size as to allow of the further
movement required towards the bearing.
And in order that my said invention and the manner of performing the same may
be properly understood I hereunto append a sheet of explanatory drawings, to be
hereinafter referred to, and showing in vertical section an example of my improved
safety hydraulic bearings for sugar-cane mills.
The hydraulic cylinder, A, is fixed to the mill cheek, B, by long bolts, C, and
I make the piston, D, which works in the hydraulic cylinder with two rods, E,
and, F, the former extending so as to press inwards the bearing brass, G, of the
mill roll, and the latter passing in an opposite direction out through a stuffing
box, H, in the cover, J, of the cylinder. The rod, F, works through a brass
bush, K, fitted into the cover, J, and through a cup leather packing, M, of the
cylinder, A, and the outer end of the rod which projects beyond the cylinder
cover has screwed on it a jam nut, L, which can be adjusted so as by bearing on the
cylinder cover to limit the movement of the piston, D, towards the inner end of
the cylinder and prevent it frem pressing the bearing brass, G, too far inwards.
A pipe, N, fixed in the cylinder cover, J, admits the motive or pressing liquid to
the cylinder, A. When wear takes place the jam nut, L, can be easily adjusted
and locked by a pinching pin, P, provided for the purpose, so as to allow the end
of the rod or ram, E, to project further inwards and thus compensate for the
wear, the cylinder, A, being made of such a size as to allow of the further movement
required towards the bearing brass, G.
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 :-
—
In safety hydraulic bearings for sugar-cane mills, constructing the hydraulic
piston with an additional rod extending out through the cylinder cover, and
fitted with a jam nut acting as a stop substantially as and for the purposes
hereinbefore described.
Dated this Ninth day of August 1893.
EDMUND HUNT,
Applicant's Agent.