Improved Apparatus for Pulping Fibrous Materials to be used in the Manufacture of Paper.
Year: 1896

page_text: Date of Application, 4th Nov., 1896
Complete Specification Left, 4th Aug., 1897-Accepted, 9th Oct., 1897
PROVISIONAL SPECIFICATION.
Improved Apparatus for Pulping Fibrous Materials to be used in
the Manufacture of Paper.
We, ANDREW MASSON, and ROBERT SCOTT, Engineers, both of York Place, New
Wandsworth, Surrey, do hereby declare the nature of this invention to be as
follows:-
This Invention relates to an improved arrangement of apparatus for pulping
fibrous materials to be used in the manufacture of paper, and has special reference
to an improvement on the Invention for improved machinery for pulping fibrous
materials used in the manufacture of paper, for which Letters Patent No. 7397
of 1892, were granted to Masson, Scott & Company, Limited, and to James Taylor.
The improved arrangement of apparatus comprises a mixing chest, a circulator,
and a duct serving to return the pulp from the circulator to the mixing chest or to
deliver it to the store chests, all as described in the Specification of said Patent,
but does not include the revolving mixing device, nor the cylindrical beater-roll
with its sectoral bed-plate and casing described in said Specification, but, in lieu
thereof, comprises a conical beater-roll and a surrounding beater-casing and a
superposed or attached box fitted with a regulating sluice or sluices, the box and
casing being so adapted and arranged in relation to the duct and to the mixing
chest as that the material under treatment delivered into the box through the duct
by the circulator from the mixing chest, may be either partly returned there-
from to the mixing chest and partly delivered into the conical beater-casing, in
any desired proportions, or may be wholly returned to the mixing chest, or may be
wholly delivered into the beater casing, and from which latter it may be partly
returned to the mixing chest and partly delivered to the stuff-chests, or may be
wholly returned to the mixing chest, or may be wholly delivered to the stuff-
chests, according to its condition, the duct leading from the circulator to the box
also enabling the contents of the vat to be discharged directly into the stuff-chests,
if so required.
The conical beater casing is mounted at the rear of the inlet-end of the mixing
chest, and the conical beater-roll is arranged, concentrically within its casing, on
a shaft which extends through the casing-ends and is mounted in bearings and
is provided with means of adjusting the roll on the shaft so as to regulate the
distance between the beater-bars of the roll and those of its surrounding casing.
At its smaller end, the beater-casing is surmounted by the box which com-
municates with the casing through an end or bottom opening and is provided
with an adjustable sluice or sluices and laterally extends externally and alongside
of the casing as a widely extending overflow the outlet of which is directed over
the adjacent end of the mixing chest.
The duct opens into the box at its bottom, and leads the pulp from the mixing
chest thereinto, and the proportion in which the pulp flows into the beater casing,
or overflows into the outlet into the mixing chest, is regulated, according to the

page_text: condition of the pulp, by the height to which the sluice or sluices is or are
adjusted.
At its larger end, the beater casing is provided with an outlet, provided with a
cock, leading to the mixing chest, and with an outlet, provided with a cock,
leading to the stuff-chests."
By such means, provision is made for continuously circulating the pulp through
the mixing chest, the circulator, the duct, the box, and the beater-casing, or for
returning any desired proportionate part thereof from the box or from the beater-
casing to the mixing chest, or for delivering the same wholly or in any desired
proportion from the box to the beater-casing and from the beater-casing to the
stuff-chests, or for discharging the contents of the mixing chest directly to the
stuff-chests, according to the condition of the pulp and as may be necessitated
by any prevailing circumstances.
Dated this 4th day of November 1896
DAY, DAVIES, & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicants.
Improved Apparatus for Pulping Fibrous Materials to be used in
the Manufacture of Paper.
We, ANDREW MASSON, and ROBERT SCOTT, both of York Place, New Wands-
worth, Engineers, 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 an improved arrangement of apparatus for pulping
fibrous materials to be used in the manufacture of paper, and has special reference
to an improvement on the Invention for improved machinery for pulping fibrous
materials used in the manufacture of paper, for which Letters Patent No. 7397
of 1892, were granted to Masson, Scott & Company, Limited, and to James Taylor.
On the accompanying drawings:-Fig. 1, represents a partial plan, partly in
section, and Fig. 2, represents a partial elevation.
The improved arrangement of apparatus comprises a mixing chest a, a
circulator b, and a duct c, serving to return the pulp from the circulator to the
mixing chest or to deliver it to the store chests through an offset c', all as
described in the Specification of said l'atent, but does not include the revolving
mixing device, nor the cylindrical beater-roll with its sectoral bed-plate and
casing described in said Specification, but in lieu thereof, comprises a conical
beater-roll d, and a surrounding beater-casing d, and a superposed or attached
box e, fitted with a regulating sluice or sluices e¹, the box e, and casing d', being
so adapted and arranged in relation to the duct c, and to the mixing chest a, as
that the material under treatment delivered into the box through the duct by the
circulator from the mixing chest, may be either partly returned therefrom to the
mixing chest and partly delivered into the conical beater-casing, in any desired
proportions, or may be wholly returned to the mixing chest, or may be wholly
delivered into the beater-casing, and from which latter it may be partly returned
to the mixing chest and partly delivered to the stuff-chests, or may be wholly
returned to the mixing chest, or may be wholly delivered to the stuff chests,
according to its condition, the duct leading from the circulator to the box also
enabling the contents of the vat to be discharged directly into the stuff-chests, if
so required..

page_text: The conical beater-casing d¹, is mounted at the rear of the inlet-end of the
mixing chest, and the conical beater-roll d, is arranged, concentrically within its
casing, on a shaft d, which extends through the casing-ends and is mounted in
bearings, and is provided with any suitable means , of adjusting the roll on
the shaft so as to regulate the distance between the beater-bars of the roll and
those of its surrounding casing.
At its smaller end, the beater-casing is surmounted by the box c, which com-
municates with the casing through an end or bottom opening e, and is provided
with an adjustable sluice or sluices or a regulating cock e', and laterally extends
externally and alongside of the casing as a widely extended overflow e³, the outlet
of which is directed over the adjacent end of the mixing chest.
The duct c, opens into the box e, at its bottom, and leads the pulp from the
mixing chest thereinto, and the proportion in which the pulp flows into the
beater casing d', or overflows into the outlet 3, into the mixing chest, is regulated,
according to the condition of the pulp, by the height to which the sluice or sluices
is or are adjusted or the regulating cock e¹ is opened.
At its larger end, the beater casing is provided with an outlet &, provided with
a cock or sluice do, leading to the mixing chest, and with an outlet d, provided
with a cock or sluice d, leading to the stuff-chests.
By such combined means, provision is made for continuously circulating the
pulp through the mixing chest, the circulator, the duct c, the box e, and the beater-
casing d', or for returning any desired proportionate part thereof from the box or
from the beater-casing to the mixing chest, or for delivering the same wholly or
in any desired proportion from the box to the beater-casing and from the beater-
casing to the stuff-chests, or for discharging the contents of the mixing chest
directly to the stuff-chests, according to the condition of the pulp and as may be
necessitated by any prevailing circumstances.
The operation is thus similar to what is commonly known as refining pulp in
refining engines of various constructions and which are ordinarily used in addition
to beating engines, but, in the case of such refining engines, the position of the
roll having been determined in the cone, the pulp is caused to pass once through
on its way to the stuff-chests of the paper making machine, with the object of
equalizing the fibres of the pulp, which may have been irregularly beaten in the
beating engines; whereas, by the means we employ, as herein described, combining
the conical heater roll and casing and the special arrangement of pipes and valves
in connection with a vat or mixing chest and circulator, the pulp can undergo the
operation of beating as well as refining, as, at the option of attendant, the pulp
can be passed between the bars of the conical roll and its casing as many times
as may be found necessary to finish it to any degree of fineness, or it may be
passed direct into the stuff-chests of the machine.
By such improved arrangement, the manipulation of the pulp becomes much
simpler, the time required for the operation of beating and refining is greatly
reduced, and the quality of the pulp produced can be made more equal throughout.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. The hereinbefore described improved apparatus for pulping fibrous materials
to be used in the manufacture of paper, the same consisting in the combination of
a mixing chest, a circulator, a duct serving to return the pulp from the circulator
to the mixing chest or to deliver it to the store chests, and a conical beater and
surrounding beater casing and a superposed box and regulating sluice or cock
arranged intermediate of the return end of the duct leading from the circulator
and the adjacent end of the mixing chest and adapted with controllable means
serving to enable the pulp to undergo the operation of heating and refining, as
set forth.
2. In pulping apparatus of the nature aforesaid, the application of a conical

page_text: beater and surrounding beater casing serving both to beat and to refine the pulp,
as set forth.
Dated this 30th day of July 1897.
DAY, DAVIES, & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicants.