Improvements Applicable to Long Rollers Working under Heavy Pressure.
Year: 1889

page_text: Date of Application, 14th Jan., 1889
Complete Specification Left, 12th Oct., 1889-Accepted, 16th Nov., 1889
PROVISIONAL, SPECIFICATION.
Improvements Applicable to Long Rollers Working under Heavy
Pressure.
I, CHARLES HERBERT, of Polwarth House, Edinburgh, in the County of Mid
Lothian, North Britain, Engineer, do hereby declare the nature of this Invention to
he as follows that is to say —
My said Invention has for its object. by an improved construction, to greatly
diminish the liability of long rollers to yield at their external surfaces when working
under heavy pressures applied to their end journals or shoulders.
In carrying out my Invention in the case of a roller which with its end
journals consists of a single casting, I make each journal part to extend some
distance inwards into the interior of the shell or cylindrical part without touching
the extreme end of the shell. The part thus extending inwards is shaped with a
gradually increasing diameter and joins or merges into the shell, the middle of the
merging part being at about one fourth of the entire length of the roller from
the end.
In the case of a roller provided with journals of steel or wrought iron, I form the
journals on spindles which extend inwards and are formed with bosses to fit contracted
parts of the inside of the shell or cylinder, the middles of the bosses being at abont
one fourth of the entire length of the roller from each end. Instead of separate
spindles being fitted at each end of a roller, a single spindle or shaft may extend from
journal to journal such spindle or shaft being made with bosses to carry the shell in
the same positions as the bosses of the separate spindles.
With the improved construction the bending moment will operate with only about
half the leverage and consequent effect of that to which rollers of ordinary construction
are subjected.
Dated this Twelfth day of January 1884
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements Applicable to Long Rollers Working under Heavy
Pressure.
I, CHARLES HERBERT, of Polwarth House, Edinburgh, in the County of Mid
Lothian, 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 has for its object, by an improved construction to greatly
deminish the liability of long rollers to yield at their external surfaces when working
under heavy pressures applied to their end journals or shoulders.
On the accompanying sheet of explanatory drawings the figures are longitudinal
sections of rollers as made with my improvements.
In carrying out my Invention in the case of a roller which with its end journals
consists of a single casting, as shown in figure, 1, I make each journal part, A, to
extend some distance inwards into the interior of the shell or cylindrical part, B,
without touching the extreme end of the shell. The part, A, thus extending inwards
is shaped with a gradually increasing diameter and joins or merges into the shell, B,
the middle of the merging part being at about one fourth of the entire length of
the roller from the end.

page_text: In the case of a roller provided with journals of steel or wrought iron, I form the
journals on spindles, C, which extend inwards and are formed with bosses, D, as
shown in figure, 2, to fit contracted parts of the inside of the shell or cylinder, B., the
middles of the bosses being at about one fourth of the entire length of the roller from
each end. Instead of separate spindles being fitted at each end of a roller, a single
spindle or shaft may extend from journal to journal as indicated by the dotted lines, E,
such spindle or shaft being made with hosses, D, to carry the shell in the same
positions as the bosses of the separate spindles.
In figure, 1, the roller is shown as having an outer shell, F, which may be of
brass or rubber or other suitable material according to the use to which the roller is to
he put.
Figure, 3, reprosents a roller the shell, B, of which is of brass, the journals
being of steel or wrought iron and made on spindles, C, having bosses, D, formed
on them.
Figure, 4, represents a roller like that shown in figure, 3, but as provided with
sleeves or caps, G, to protect the spindles, C, from corrosion or injury to which
they are liable when the rollor is used in some liquids.
With my improved construction the bending moment will operate with only about
half the leverage and consequent strain of that to which rollers of ordinary con-
struction are subjected.
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 :-
-
Constructing a roller so that the shell or cylinder is supported from the journals or
spindles at two parts about one fourth of the length of the roller from the ends,
substantially as and for the purposes herein before described.
Dated this Eleventh day of October 1889.
EDMUND HUNT,
Applicant's Agent.