Improvements in Machines for Applying a Coating of Gum or other Mucilaginous Substance to Paper and the like.
Year: 1893

page_text: Date of Application, 27th June, 1893
Complete Specification Left, 27th Mar., 1894-Accepted, 23rd June, 1894
PROVISIONAL SPECIFICATION.
Improvements in Machines for Applying a Coating of Gum or other
Mucilaginous Substance to Paper and the like.
We CHARLES HUDSON and JOSEPH SPOOR HUDSON, 3 Langdale Terrace,
Stockton-on-Tees, Cardboard Box Makers, do hereby declare the nature of this
invention to be as follows:-
Our invention relates to a machine for spreading a coating of gum, paste, glue,
varnish or other mucilaginous substance, to the underneath side of paper, cardboard
and the like, and to the delivery and transit of the said coated article to the place
where it is required for use or placement.
Our machine is composed of two or more rollers, fixed in horizontal positions
and working in Buitable bearings fixed at each end of the tank containing the
mucilaginous substance for coating with.
The lower roller or rollers act as feed rollers in taking up on to their surfaces
the coating substance, and applying it to the surface of the upper one over which
the article passes to be coated.
To regulate the thickness of the coating applied to the paper, we provide a
strickle or scraper of metal or other suitable substance, or a small roller in suitable
bearings may be used if desired, such scraper is regulated by means of screws or
any other suitable means.
On the top of the mucilage tank, which may be of any shape or size, in front of
and in close proximity to the coating roller, we have two feed rollers, which take
One of these feed
in between them the paper as it passes to the coating roller.
rollers is self adjusting, preferable adjustable by elastic bands working on pulleys,
round each end of the two rollers, so that they will feed in any thickness of paper
required to be coated.
The coating roller is arranged to travel at a faster surface rate than the feed
rollers, thus producing a more even spread of paste on the under surface of the
paper.
Above or past the coating roller we have another roller, around which is an
endless band which has its reverse part around a roller fixed at a suitable distance
beyond where the article coated is required.
In transferring the paper from the coating roller to the endless carrying bands,
we have a number of semi-circular or other suitably shaped take off fingers, resting,
with their points on the coating roller, to turn the paper the coated side uppermost
on to the travelling bands. These take off fingers we fix on a bar which rests at
each end of the tank on eccentric spindles, thus causing the points of the fingers to
keep, and slightly press, on the coating roller. Or these finger points can be held
close to the coating roller by a spring or other pressure, but we prefer the bar with
eccentric spindles.
If necessary we have in addition to the take off fingers some revolving discs
which work in conjunction with the fingers, to insure the paper being turned on to
the endless band.
Many kinds of paper when being moistened at the underneath side will curl up
at the edges towards the uppermost. This is prevented by the turning over
process, as the weight of the coated paper prevents the edges turning inwards.
When it is not necessary to turn the paper the coated side uppermost we place
travelling band rollers past the coating roller, and the take off fingers are arranged
to pass the paper the conted side downwards on to the travelling bands.
Immediately under the mucilage tank we have a hot water tank, heated by a

page_text: gas jet, or by any other means when the glue or mucilage requires to be applied
warm.
The mucilage feed rollers are geared to travel at a much slower surface rate than
the coating roller.
The paper feed gripping rollers, the take off fingers, and the travelling band
rollers, are so arranged that the paper shall have a certain, but very slight contact
with the coating roller, as the paper passes over it.
Dated this 26th day of June 1893.
CHARLES HUDSON.
JOSEPH S. HUDSON.
Improvements in Machines for Applying a Coating of Gum or other
Mucilaginous Substance to Paper and the like.
We CHARLES HUDSON and JOSEPH SPOOR HUDSON 27 Russell Street
(formerly of 3 Langdale Terrace) Stockton-on-Tees Cardboard Box Makers
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:-
Our invention relates to a machine for spreading a coating of gum paste, glue,
varnish, or other mucilaginous substance to the underneath side of
paper, cardboard
and the like, and to the delivery and transit of the said coated article to the place
where it is required for use or placement.
Our machine is composed of two or more rollers fixed in horizontal positions and
working in suitable bearings at each end of the tank containing the mucilaginous
substance for coating with.
The lower roller acts as feed roller and is geared to travel at a much slower
surface rate than the coating roller, and takes up on its surface the coating
substance and applies it to the surface of the upper one, over which the article
passes to be coated.
On each end of the tank we fix a plate or frame which acts as bearings for the
gripping feed rollers, the carrying band roller, the disc bar and the bars for
supporting the cariying band.
To regulate the thickness of the coating applied to the paper we provide a
strickle or scraper of metal or other suitable substance or a small roller in suitable
bearings may be used if desired, such scraper is regulated by means of screws, or
any other suitable means.
On the top of the mucilage tank which may be of any shape or size in front of
and in close proximity to the coating roller we have two feed rollers which take in
between them the paper as it passes to the coating roller. One of these feed rollers
is self adjusting preferably by elastic bands working on pulleys round each end of
the two rollers, or other suitable springs, so that they will feed in paper of any
thickness required to be coated.
The coating roller is arranged to travel at a faster surface rate than the feed
rollers thus producing a more even spread of mucilage on the under surface of the
paper.
Above or past the coating roller we have another roller around which is an
endless band which has its reverse part around a roller fixed at a suitable distance
beyond where the article coated is required.
In transferring the paper from the coating roller to the endless carrying band
we have a number of suitable shaped take off fingers resting with their points on
the coating roller, to turn the paper the coated side uppermost on to the travelling
bands, these take off fingers we fix on a bar with eccentric bearings which
rest at each end of the tank, thus causing the points of the fingers to keep and

page_text: elightly press on the coating roller or the finger points can be held close to
the coating roller by a spring or other pressure, but we prefer the bar with
eccentric bearings.
When necessary we have in addition to the take off fingers some revolving discs
which work in conjunction with the fingers to insure the paper being turned on to
the endless bands.
Many kinds of paper when being moistened on the underneath side will
curl up at the edges towards the uppermost, this is prevented by the turning
over process as the weight of the coated paper prevents the edges turning
inwards.
When it is not necessary to turn the paper the coated side uppermost we
place the travelling band roller past the coating roller and the take off fingers
are arranged to pass the paper or cardboard the coated side downwards on to the
carrying band.
Immediately under the mucilage tank we have a hot water tank, heated by a
gas jet or by any other means, when the glue or mucilage requires to be applied
warm.
The feed gripping rollers, the take off fingers, and the travelling band roller are
50 arranged that the paper shall have a certain but very slight contact with the
coating roller without the aid of any direct pressure on the article coated as it
nesses swear it

page_text: 2nd. The combination of feed gripping rollers F and F', with suitably shaped
take off fingers L, and an arrangement for turning the paper the coated side upper-
most as described.
3rd. The feed gripping rollers F and F working as described, one being so
geared that the paper passes through much slower than the surface travelling speed
of the coating roller C.
4th. The combination of the coating roller C with one or more rollers D, working
in the mucilage tank for supplying the coating roller C with mucilage, and geared
for travelling at a much slower surface speed than the coating roller C.
5th. The combination of the endless carrying bands H with the take off fingers L,
and arrangement for turning the paper the coated side uppermost as described.
6th. The combination of a coating roller C. with a feed and take off apparatus,
so placed that the paper passing through the machine shall have a slight but
certain surface contact with the coating roller, without the aid of any direct
pressure on the article coated as it passes over the coating roller.
7th. The take off fingers so fixed that their points shall have a certain gentle
pressure on the surface of the coating roller, to lift the paper from the same, as
described.
Dated this the 22nd day of March 1894.
CHARLES HUDSON
JOSEPH SPOOR HUDSON.