Improvements in Apparatus for Treating Paper Pulp.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Treating Paper Pulp.
I, LOUIS DE NAEYER, of the Firm of De Naeyer & Cie., of Willebroeck, in
the Kingdom of Belgium, Engineers, do hereby declare the nature of this invention
to be as follows:-
This invention consists in certain improvements in machinery or apparatus for
treating paper pulp with the object of purifying and cleansing same.
The apparatus comprises a vertical, rectangular receiver or vat, made of metal
plates or castings suitably stiffened by rails, girders, or ties, bolted or rivetted in
suitable manner to the plates. This receiver is provided with two internal
perforated partitions arranged parallel to its longer sides and at convenient
distance therefrom so as to form three longitudinal internal chambers. In the
two side chambers vertical vibrating spring plates or blades are arranged and
adapted to force the paper pulp, to be freed from impurities, through the said
perforated partitions into the central chamber. To the side walls brackets are
bolted which support the bearings of motion shafts at each side; these shafts are
cranked at suitable parts and the cranks are connected by rods or links to
vibrating arms pivotted at the base of the receiver and carrying the agitating or
stirring plates or blades employed to force the pulp inwardly towards the said
perforated plates. Driving pulleys are mounted upon one of the shafts, and motion
is transmitted from one of the said shafts to the other by means of a belt passing
over pulleys arranged in convenient positions, or by gearing or otherwise suitably.
Fly wheels may be employed serving to render the operation of the machine
smooth and even, in spite of the shocks or vibration caused by the stirring plates.
The liquid pulp to be treated is admitted into the side chambers of the vat or
receiver through inlet apertures, and after being forced by the stirrers through
the perforated internal partitions issues from the central chamber through an
outlet orifice. A door or doors is or are arranged at the lower part of the vessel
to enable any part of it to be cleaned.
Dated this 27th day of June 1895.
1, LOUIS DE NAEYER, of the Firm of De Nacyer & Cie., of Willebroeck, in
the Kingdom of Belgium, 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 consists in certain improvements in machinery or apparatus for
treating paper pulp with the object of purifying or cleansing same, and the
apparatus comprises a vertical rectangular receiver or vat suitably constructed and
divided by two internal perforated partitions into three longitudinal chambers;
Price 8dl

page_text: the two side chambers into which the pulp to be purified is fed are provided with
stirring plates or blades suitably operated and adapted and arranged to force the
pulp through the perforated partitions into the central chamber, from which it is
delivered from a suitable opening.
I will now describe my invention in reference to the accompanying drawings in
which Fig. 1 is a front and Fig. 2 an end elevation.
A is the vertical rectangular receiver or vat made of metal plates or
castings A, B, A2, B2, A³, B³, suitably stiffened by rails, girders, or ties, such
as R, R', T, T¹, bolted or rivetted in suitable manner to the plates. This receiver
is provided with two internal perforated partitions OO' arranged parallel to its
longer sides and at convenient distance therefrom so as to form three longitudinal
internal chambers C, C, and C₁. In the two side chambers CC vertical vibrating
stirring plates or blades N N' of solid material are arranged and adapted to force
the paper pulp, to be freed from impurities, through the perforations in the said
partitions into the central chamber C¹. These perforations are of such area
as only to let pass the smaller particles of the pulp which is in a fine state of
subdivision. To the side walls of the vat brackets E E' are bolted which support
the bearings G G' of rotary motion shafts H H at each side; these shafts are
cranked at suitable parts such as I I', and the cranks are connected by rods or
links J J to vibrating arms L L' pivotted at M M at the base of the receiver
and carrying the before mentioned agitating or stirring plates or blades N N¹
employed to force the pulp inwardly towards and through the said perforated
plates 01. Driving pulleys S are mounted upon one of the shafts HH, and
motion is transmitted from one of the said shafts to the other by means of a belt h
passing over pulleys U U₁ arranged in convenient positions, or by gearing, or
otherwise suitably. Fly wheels such as V V' may be employed serving to render
the operation of the machine smooth and even, in spite of the shocks or vibration
caused by and during the operation of the stirring plates N N¹.
In operation the liquid pulp to be treated is admitted into the side chambers CC
of the vat or receiver through inlet apertures PP', and after being forced by the
stirrers or blades N N through the perforated internal partitions OO¹ into the
central chamber C³, issues from the central chamber through an outlet orifice Q.
A door or doors W is or are arranged at the lower part of the vessel to enable any
part of it to be cleaned.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The improved apparatus for treating paper pulp consisting of a rectangular
receiver or vat such as A suitably strengthened and provided with two internal
perforated partitions forming three longitudinal chambers, in the two side chambers
of which are arranged vertical vibrating stirring plates or blades arranged and
adapted to be operated by power-driven coupled cranked shafts and links, and to
force the pulp through the perforated partitions to the central chamber from
which it is delivered, substantially as described and illustrated in the drawings.
2. The improved arrangement of apparatus hereinbefore described and illustrated
in the drawings for the purpose specified.
Dated this 28th day of February 1896.