Improvements in or connected with Paper-making.
Year: 1891

page_text: Date of Application, 19th June, 1891
Complete Specification Left, 18th Mar., 1892-Accepted 23rd Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Paper-making.
I, JOHN JARDINE, of Esk Mills, Penicuik, in the County of Mid Lothian, North
Britain, Manager, do hereby declare the nature of this invention to be as
follows, that is to say :-
The said invention has for its object to save paper making fibre or material
ordinarily lost or not advantageously utilised and at the same time to purify the
water employed:
The water passing from the pulp on the wire of a paper-making machine
ordinarily carries with it a proportion of fibres and other matters. In existing
machines a part of this escaping fibre is saved in consequence of the water
passing through the wire at the entrance end of the machine being caught by a
These
tray whilst other portions pass through the vacuum box or boxes.
portions are often returned to the pulp to render it sufficiently dilute and fluid;;
but obviously all the water cannot be utilised in this way, and ordinarily a
large quantity passing through the wires is led into the drains.
By the present invention trays are arranged so as to catch in an uncon-
taminated condition all the water which would otherwise go into the drains;
and this water with the fibres or paper-making materials in it is led into tanks
whence it is pumped into filter presses. Or the water and suspended matters may
be allowed to settle, the settling being assisted if thought desirable by any
suitable known reagent; and after more or less of supernatant clear water has
been run off the residue may be pumped into filter presses.
In the filter presses
the fibre or material is left with very little water in it, and is transferred
thence to the beating engine in which it is incorporated with the main body
of pulp. The water from the filter press is sufficiently purified for being used
over again; or when more convenient it may be discharged into a river.
Any other used waters containing fibres or paper-making materials may be treated
in the same way.
Dated this Eighteenth day of June 1891.
EDMUND HUNT,
Applicant's Agent.
COMPLETE SPECIFICATION.
Improvements in or connected with Paper-making.
I, John Jardine, of Esk Mills, Penicuik, in the County of Mid Lothian, North
Britain, Manager, 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 to save paper making fihre or material
ordinarily lost, or not advantageously utilised, and at the same time to purify the
water employed.
The water passing from the pulp on the wire of a paper-making machine
ordinarily carries with it a proportion of fibres and other matters. In existing
machines a part of this escaping fibre is saved in consequence of the water passing
through the wire at the entrance end of the machine being caught by a tray, whilst
other portions pass through the vacuum box or boxes. These portions are often
returned to the pulp to render it sufficiently dilute, but obviously all the water
cannot be utilised in this way, and, ordinarily, a large quantity passing through the
wire is led into the drains.

page_text: According to my present invention trays are arranged so as to catch in an uncon-
taminated condition all the water which would otherwise go into the drains; and
this water with the fibres or paper-making materials in it is led into tanks, whence
it is pumped into filter presses. Or the water and suspended matters may be
allowed to settle, the settling being assisted if thought desirable by any suitable
known reagent, and after more or less of supernatant clear water has been run off
the residue may be pumped into filter presses. The well known precipitating agent
alumino-ferric-sulphate is conveniently and satisfactorily applicable for promoting
the settling of the matters suspended in the water, this agent being added and
renewed as it becomes dissolved and exhausted.
In the filter presses, which may be of any suitable known construction, the fibre
or material is left with very little water in it, and it is transferred thence to the
beating engine in which it is incorporated with the main body of pulp. The water
from the filter press is sufficiently purified for being used over again, or when more
convenient it may be discharged into a river.
Any other used waters containing fibres or paper-making materials may be
treated in the same way.
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:
The recovering and utilising of fibres or paper-making materials from used waters
by means of filter presses and otherwise substantially as hereinbefore described:
Dated this Seventeenth day of March 1892.
EDMUND HUNT,
Applicant's Agent.