Improved Machinery for Treating Fibrous Materials Employed in the Manufacture of Paper.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improved Machinery for Treating Fibrous Materials Employed in
the Manufacture of Paper.
We, ANDREW MASSON and ROBERT SCOTT, both of York Place, New Wands-
worth, Surrey, Engineers, do hereby declare the nature of this invention to be as
follows:
This invention relates to pulp beating machinery employed in the manufacture
of paper, and has special reference to that class of such machinery wherein
conical beater rolls are employed.
In such beating engines, as hitherto constructed, a single conical beater-roll
of a relatively long length and acute conicality is rotated within a corresponding
conical casing, a sufficient adjustable clearance being left between the beater-roll
and the casing, each of which is fitted with peripheral knives in a manner well
understood. This construction is practically disadvantageous, in that the treat-
ment of the paper stuff thereby cannot be sufficiently well regulated to meet the
practical requirements of the considerably different varieties of paper stuff,
as, for example, for some thereof, a single passage through the beater is sufficient
to finish the material, whereas other fibres require to be passed repeatedly through
the beater. Such construction is, moreover, disadvantageous in that the reaction.
due to the centrifugal action of the beater on the stuff passing through the casing
causes a violent end-thrust both on the casing and on the beater-shaft, necessitating
the application of thrust-bearings to offer the necessary resistance, but which
entail friction and greatly increase the power required to drive the beater-roll.
The object of this invention is to avoid these and other practical disadvantages
incidental to such shaped beater-rolls as hitherto employed.
To this end, the invention is characterized by the application, in combination, of
oppositely arranged conical beater-rolls, on a common driving-shaft, with their
axes coincident with that of the latter, and their respective conicalities tapering in
opposite directions, the beater rolls being located within corresponding conical
casings, which are, together, adjustable in relation to their respectively contained
conical rolls; by means of which arrangement we obtain the entirely novel action,
as applied to such machinery, of said end-thrust being avoided, that of the respec-
tive beater-rolls and respective casings respectively neutralizing each other, where-
by the necessity of thrust-blocks is avoided, and, while the beating capacity of
the engine is largely increased, the power necessary to drive it is largely reduced.
In such arrangement, we also prefer to make each of the beater-rolls of a
relatively short length and correspondingly more obtuse conicality, whereby the
paper-stuff will be caused to have a shorter course through the beater-casing at
each passage, enabling a better regulation of the treatment to be obtained.
In the above arrangement, we may apply two beater-rolls to the shaft, in a fixed
relation to each other, and apply the casings so that they may be together adjusted
in relation to their respective beater-rolls by worms and worm-gearing arranged
between the two, feeding, the stuff into the casing from the inner smaller ends, and

page_text: discharging the same therefrom from the outer larger ends. Or, the beater rolls
may be arranged with their larger ends in abutment or towards each other, in
which case, the feed would be at the outer smaller ends and the discharge at the
meeting or inner ends. Or, any larger number of oppositely-arranged beater-rolls
may be used when so arranged that the end-thrust of the one series shall be neutral-
ized by that of the oppositely arranged series.
This invention also comprises the use, in combination, of a container serving to
furnish the beating-engine with the paper-stuff under treatment, with a container
in which, simultaneously, the constituent materials of the paper-stuff are mixed,
and the contents of which latter, when those of the container furnishing the beater-
engine are sufficiently treated and discharged to the stuff-chests, can be instantly
discharged into such container, and itself be recharged with other materials to
be mixed; whereby the operation of the beating engine may be rendered con-
tinuous, in lieu of intermittent as when only one container is used for both mixing
and furnishing purposes as ordinarily.
In such arrangement, both the container furnishing the beating engine and the
mixing container are each supplied with a circulator, that of the former container
feeding the paper-stuff into the supply box from which the beater casings are
directly supplied by flexible connections, and that of the other container con-
tinuously returning the materials being mixed from the lower to the upper part
of the container, its return pipe having a pivotal shoot enabling the contents of the
mixing container either to be returned thereinto or discharged into the container
furnishing the beating engine.
The duplicate oppositely-arranged beater-rolls may, however, be used with a
single container of any suitable formation, and the duplicate arrangement of
containers may be used with an ordinary arrangement of beater-rolls.
DAY, DAVIES & HUNT,
Chartered Patent Agents. 321, High Holborn, London, W.C.,
Agents for the Applicants.
.
Improved Machinery for Treating Fibrous Materials Employed in
the Manufacture of Paper.
We, ANDREW MASSON and ROBERT SCOTT, both of York Place, New Wands-
worth, Surrey, Engineers, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer
tained in and by the following statement:-
This invention relates to pulp beating machinery employed in the manufacture
of, paper, and has special reference to that class of such machinery wherein
conical beater rolls are employed.
In such beating engines, as hitherto constructed, a single conical beater-roll
of a relatively long length and acute conicality is rotated within a corresponding
conical casing, a sufficient adjustable clearance being left between the beater-roll
and the casing, each of which is fitted with peripheral knives in a manner well
understood. This construction is practically disadvantageous, in that the treat-
ment of the paper-stuff thereby cannot be sufficiently well regulated to meet the
practical requirements of the considerably different varieties of paper-stuff
which require to be treated, as, for example, for some thereof, a single passage
through the beater is sufficient to finish the material, whereas other fibres require
to be passed repeatedly through the beater. Such construction is, moreover, dis-

page_text: advantageous in that the reaction due to the centrifugal action of the beater on
the stuff passing through the casing causes a violent end-thrust both on the casing
and on the beater-shaft, necessitating the application of thrust-bearings to offer
the necessary resistance, but which entail friction and greatly increase the power
required to drive the beater-roll.
The object of this invention is to avoid these and other practical disadvantages
incidental to such shaped beater-rolls as hitherto employed.
On the accompanying drawings, in which like reference letters indicate like
parts wherever repeated;
Fig. 1, represents an elevation partly in section; and
Fig. 2, represents a plan.
To the end aforesaid, the invention is characterized by the application, in com-
ination, of oppositely arranged conical beater-rolls, a, on a common driving-
shaft, b, with their axes coincident with that of the latter, and their respective
conicalities tapering in opposite directions, the beater-rolls being located within
corresponding conical casings, c, which are together adjustable in relation to their
respectively contained conical rolls; by means of which arrangement we obtain
the entirely novel action, as applied to such machinery, of said end-thrust being
avoided, that of the respective beater-rolls and respective casings respectively
neutralizing each other, whereby the necessity of thrust-blocks is avoided, and,
while the beating capacity of the engine is largely increased, the power necessary
to drive it is largely reduced.
In such arrangement, we also prefer to make each of the beater-rolls of a
relatively short length and correspondingly more obtuse conicality, whereby the
paper-stuff will be caused to have a shorter course through the beater-casing at
each passage, enabling a better regulation of the treatment to be obtained.
In the improved arrangement, we may apply two beater-rolls to the shaft, in a
fixed relation to each other, and apply the casings so that they may be together
adjusted in relation to their respective beater-rolls by any suitable arrangement
of worms and worm-gearing, d, or the like arranged between the two casings, feed-
ing the stuff into the casings from the inner smaller ends by pipes, e, and dis-
charging the same therefrom from the outer larger ends by pipes, f. Or, the
beater-rolls may be arranged with their larger ends in abutment or towards each
other, in which case, the feed would be at the outer smaller ends and the discharge
at the meeting or inner ends. Or, any larger number of oppositely arranged
beater-rolls may be used when so arranged that the end-thrust of the one set or
series shall be neutralized by that of the oppositely arranged set or series.
The invention also comprises the use, in combination, of a container, g, serving
to furnish the beating-engine with the paper-stuff under treatment, with a con-
tainer, h, in which, simultaneously, the constituent materials of the paper-stuff are
mixed, and the contents of which latter container, when those of the container, g,
furnishing the beating-engine are sufficiently treated and discharged to the stuff-
chest, i, can be instantly discharged into such container, g, while the container, h,
can itself be recharged with other materials to be mixed, whereby the operation of
the beating engine may he rendered continuous, in lieu of intermittent as when
only one container is used for both mixing and furnishing purposes as ordinarily.
In such arrangement, both the container, g, furnishing the beating engine, and
the mixing container, h, are each supplied with a circulator, j. The circulator
of the container, g, serves to feed the paper-stuff into the supply box, k, from which
the beater casings, c, are directly supplied by the flexible connections, e, and also
to feed the paper-stuff, when sufficiently beaten, to the stuff-chest, i, the pipe, m,
through which the paper stuff is returned by the circulator, being fitted with a
wo-way cock, n, enabling the paper stuff returned by the circulator to be directed
either to the supply box, k, or through a pipe, o, to the stuff-chest, i, as may be
required. The paper-stuff while undergoing the beating treatment is returned
from the beater casings to the container, g, by the said pipes, f, which preferably
lischarge over the centre of a suitably supported conical deflector, 2, which serves

page_text: to distribute the paper-stuff evenly around within the container. The circulator of
the container, h, serves to continuously return the materials being mixed from the
lower to the upper part of such container, its return pipe, q, having a pivotal
shoot, r, enabling the contents of the container to be either returned thereinto or
discharged into the container, g, furnishing the beating engine, as may be required.
The above described improvements may be used either conjunctively, as repre-
sented on the drawings, or separately, and, in such latter event, the oppositely-
arranged beater-rolls may be used with a single mixing and furnishing container
of any suitable formation, or the duplicate arrangement of containers may be used
with an ordinary arrangement of beater-rolls. The additional container, h, may
also be used to supply two or more chambers, g, each of which latter furnishing its
own beating engine.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, we declare that what we
claim is: :-
In pulp beating machinery employed in the manufacture of paper;
1. In combination, a pair or series of conical beater-rolls mounted on a common
driving-shaft with their respective conicalities tapering in opposite directions, the
one set or series operating to neutralize the end-thrust of the other set or series,
corresponding conical casings fitted with means of receiving and discharging the
inflow and outflow of the paper-stuff, and means of adjusting the casings and
beater-rolls in the desired relation to each other, as set forth.
2. In combination, a beating-engine, a furnishing container fitted with a circu-
lator and with means of delivering the paper-stuff being beaten repeatedly to the
beating engine and finally to the stuff-chest, and a mixing container fitted with a
circulator and with means of delivering the paper stuff being mixed repeatedly to
the mixing container and finally to the furnishing container, such containers
operating to render the operation of the beating engine continuous, as set forth.
3. The modifications hereinbefore referred to.
Dated
MS Jo day
DAY, DAVIES & HUNT,
Chartered Patent Agents. 321, High Holborn, London, W.C.,
Agents for the Applicants.