Improvements relating to the Coating and Drying of Paper, and the like.
Year: 1896

page_text: Date of Application, 5th Oct., 1896
Complete Specification Left 5th July 1897-Accepted 18th Sept. 1897
PROVISIONAL SPECIFICATION.
Improvements relating to the Coating and Drying of Paper, and
the like.
I, ANDREW MASSON, of Drumearn, Earlsfield Road, Wandsworth Common,
Surrey, Engineer, do hereby declare the nature of this invention to be as
follows:-
This Invention relates to the coating of and to the drying of coated paper and the
like whether for paperhangings or other uses, and consists more particularly of
a novel method and means of drying the paper, which permit of the drying
being more regularly, uniformly and expeditiously effected than is the case with
the existing method and means of effecting said object, and also of the coating of
both sides of the paper being successively effected and dried at the one operation
Existing coating and drying apparatus only enables one side of the paper to
be coated at each operation, and necessitates the festooning or hanging of the same
in a drying chamber until it is uniformly dried throughout its entire width. This
is a tedious operation, as the air circulates past the pendant edges of the festooned
hanging paper, and dries said edges long before the middle width of the paper
is appreciably dried, resulting in the paper buckling, which prevents it from
being reeled or from being coated on its other side until the paper has hung
sufficiently long to be uniformly dried throughout its width and length, when,
of the paper has to be coated on the other side, the same tedious waiting has to
be again endured.
The main object of this Invention is, as aforesaid, to expedite the treatment
and to enable the coating of both sides of the paper, if required, to be successively
effected and dried in one continuous operation, and to enable the dried paper
being reeled directly from the coating and drying apparatus and in immediate
succession to or continuation of said operation."
In carrying the Invention into effect, I effect the drying of the paper immediately
after it has been coated on the one side by causing it to pass slowly through a
drying chamber and by causing hot dry air to be blown thereonto for its full
width and at successive intervals in such a manner that the coated side of the
paper, while travelling through the drying chamber, is successively impinged
upon by fresh warmer and warmer air, and is so gradually dried equably throughout
its full width until it emerges from the apparatus, when, if required to be coated
only on the one side, it can be directly reeled, or, if it is required to be coated
on the both sides, it is guided to a second coating machine and is there coated on
its other side and passed through a second hot air drying chamber with its freshly
coated side now exposed to successive impingements of hot air as above referred to.
Thus, by this improved method and means, the paper, while travelling through
the apparatus, is successively subjected across its full width to successive warmer
and warmer draughts of hot air, and so is gradually dried uniformly across its
full width, and emerges from the machine in a,condition for immediate reeling.
The second coating and drying apparatus may be arranged ahead of the first

page_text: coating and drying apparatus, so that the paper to be coated may pass straight
ahead, or the two coating apparatus may be arranged adjacent to each other
and intermediate of the two drying apparatus, in which event, the paper coated
and dried on the one side, would require to be returned from the first apparatus
to the second apparatus. The coated paper is guided with its coated side upper-
most by a travelling web or the like supported by rollers, and the hot air duct is
arranged longitudinally of the drying chamber above the paper, with its outlets
directed thereonto against the direction of travel of the paper. The air may
be heated by any suitable stove, and impelled through the duct by a fan or the
like.
.
1000
COMPLETE SPECIFICATION.
Improvements relating to the Coating and Drying of Paper, and
the like.
I, ANDREW MASSON, of Drumearn, Earlsfield Road, Wandsworth Common,
Surrey, 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:>
This Invention relates to the coating of paper and the like and to the drying
of coated paper and the like. whether for paperhangings or other use, and consists
more particularly, in the hereinafter described improved means of drying the
paper, which permits of the drying being more regularly, uniformly and
expeditiously effected than is the case with the existing means of effecting such
object, and also of the coating of the both sides of the paper being successively
effected and dried at the one operation, and also of the dried paper being reeled
directly from the coating and drying apparatus and in immediate succession
to or continuation of said operation.
On the accompanying drawings:-
Fig. 1, represents a side broken elevation of the improved apparatus, while
Fig. 2, represents a broken plan thereof.
In carrying out the Invention, I use a duplicate arrangement of coating and
of drying apparatus, arranging the second coating and drying apparatus ahead
of the first coating and drying apparatus, so that the paper to be coated may pass
straight ahead from the first coating and drying apparatus to the second like
apparatus, or, as represented, the two coating apparatus may be arranged adjacent
to each other, and intermediate of the two drying apparatus, in which event,
the paper, after being coated and dried on the one side, would require to be
returned from the first apparatus to the second said apparatus,, as hereinafter
more particularly described. The coating apparatus may be of an ordinary
construction.
A, represents the first coating apparatus, B, the first drying apparatus, C, the
second coating apparatus, D, the second drying apparatus, E, the roll of paper
to be coated, and F, the roll of coated and dried paper.
The web of paper e, after passing between the coated rolls a, is guided, with its
coated side uppermost, by a travelling web or the like b, supported by rollers 61,
through the drying apparatus B, and, is then either carried on ahead to the

page_text: second coating apparatus if that be arranged ahead of the first drying apparatus,
or, vide the drawings, is returned through the drying apparatus B, by a travelling
web or the like b, supported by rollers 63, to the second coating apparatus C,
with its uncoated side adjacent to the coating rolls c, and is then guided, with
its freshly coated side uppermost, by a travelling web or the like d, supported
by rollers d', through the second drying apparatus D, from which it emerges
in a condition for immediate reeling onto the reel E.
Each drying apparatus is fitted with a hot air duct f, arranged longitudinally
of the apparatus just above the travelling paper web, and which is formed with
a series of transversely arranged outlets f, adapted to direct the hot air traversing
the duct onto the paper-web against the direction of traverse of the latter. The
drying air, previously to being led to the duct f, is heated by any suitable stove g,
and impelled through the duct by a fan or the like h.
The drying of the paper is effected immediately after it has been coated on
the one side by causing hot dry air to be blown thereonto for its full width and at
the successive intervals of the outlets f', in such a manner that the coated side
of the paper, while travelling through the drying apparatus, is successively
impinged upon by fresh warmer and warmer, air, and so is gradually dried equally
throughout its full width until it emerges from the apparatus, when, if required
to be coated only on the one side, it can be directly reeled, or, if it is required to
be coated on the both sides, it is guided to the second coating machine and is
there coated on its other side and then passed through the second hot air drying
apparatus with its freshly coated side now exposed to successive impingements of
hot air as above referred to.
Thus, by these improved means, the paper, while travelling through the
apparatus, is successively subjected, across its full width, to successive warmer
and warmer draughts of hot air, and so is gradually dried uniformly across its
full width, and emerges from the drying apparatus in a condition for immediate
reeling.
Having now particularly described and ascertained the nature of the said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is.
1. In apparatus for coating and drying paper, the improved means, consisting
of the improved combination of parts hereinbefore described with reference to
the accompanying drawings, of drying the paper.
2. The improved combination and arrangement of coating and drying
apparatus hereinbefore described with reference to the accompanying drawings,
whereby both sides of the paper are successively coated and dried and the dried
paper is reeled directly from the coating and drying apparatus, in one continuous
operation.
Dated this 5th day of July, 1897.
DAY, DAVIES, & HUNT,
Chartered Patent Agents,.
321, High Holborn, London, W.C., Agents for the Applicant.