Improvements in Machines for Gumming, Varnishing, or otherwise Coating Paper.
Year: 1893

page_text: Date of Application, 10th Feb., 1893
Complete Specification Left, 18th Oct., 1893-Accepted, 18th Nov., 1893
PROVISIONAL SPECIFICATION.
Improvements in Machines for Gumming, Varnishing, or otherwise
Coating Paper.
I, GEORGE RICHARD EDWARD OVERETT, of 55 Brougham Road, Dalston,
London, Factory Overseer, do hereby declare the nature of this invention to be
as follows:-
The object of my invention is to construct an apparatus for gumming, varnishing,
or otherwise coating paper, so that it can be fitted to an ordinary bench or table,
the machine being operated and the sheets of paper fed between the rolls of the
machine by one operator.
According to my invention, the machine is composed of two end plates, or
brackets (with or without tie rods or plates), two rollers, and a trough. One of
the rollers .e. the bottom one, dips into the trough, and is turned by hand, or
treadle motion for conveying the gum, or other material to the paper, which is
being fed into between this roller and another, this second roller acting as a
pressure roll for keeping back superfluous gum, or surfacing material.
Each end plate or bracket is made with a slot for the two rollers to ride in, and
may have a projecting portion for the trough to rest on, an extension being on one
side of each bracket to enable it to be clamped to the bench, or table.
The end plates, or brackets may be connected by tie rods, and these be so
arranged as to hold the trough in position, or the end plates, or brackets may be
connected by a plate, and this can be screwed, or be otherwise secured to the
paper between
table, and act as a lip, or guide for feeding the sheets of
the rolls.
A suitable warming apparatus can be applied to the trough for keeping the
contents warm, and consequently of a fluid character.
The surfacing roller is preferably covered with felt to better distribute the
material.
In feeding the sheets of paper, I slightly overlap the edges, so as to keep the top,
or pressure roller clean.
H. GARDNER,
Patent Agent, 166, Fleet Street, London,
Agent for the said George Richard Edward Overett.
COMPLETE SPECIFICATION..
Improvements in Machines for Gumming, Varnishing, or otherwise
Coating Paper.
I, GEORGE RICHARD EDWARD OVERETT, of 55 Brougham Road, Dalston,
in the County of London, Factory 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 :-
My invention relates to improvements in machines for gumming, varnishing or
otherwise coating paper.
The object of my said invention is to construct for such purposes an improved
machine, capable of applying a uniform coating of liquid material to paper fed
therethrough in sheets in rapid succession, or delivered thereto in long lengths from
a roll. A table, fitted with suitable guides for the paper, preferably forms part of
the said apparatus but it is an advantageous feature of my said invention that the

page_text: convenient support, such as a work-bench or an ordinary table. The machine is so
constructed that a single operator can feed the paper therethrough and simultaneously
operate the coating-devices.
In order that my said invention may be clearly understood I will now proceed
to describe the same with reference, by way of example, to the accompanying
drawings, wherein
Figure is a side elevation of an improved gumming-machine constructed according
to my invention,
Figure 2 is an end elevation of the same,
Figure 3 is a transverse section on the line xx of Figure 2, and
Figure 4 is a view, at right angles to Figure 3, in section on the line У у
latter.
of the
Each
Like reference-letters indicate corresponding parts throughout the drawings.
A is a frame which supports a table B on which adjustable "fences" such as C
are secured to form guides for the paper. DD are cheek plates bolted to the
table by bolts F and serving to support a bath F to contain water or other fluid;
the said bath supports the coating-apparatus as hereinafter explained.
cheek-plate is slotted as at D¹ for a purpose hereinafter specified; by unscrewing
the bolts E the cheek-plates and all that they support can be readily removed from
the table B, and equally easily attached to any other suitable support. The cheek-
plates can be connected if desired, by a transverse plate which will forn a lip or guide
over which the paper can pass on its way to the bath.
G is a perforated plate which depends from the bath F around its bottom edge
as shown, to form a chamber for a burner H which is preferably supplied with
air and gas by any suitable device such as that shown; the said burner is
employed to heat the contents of the bath. II are parallel tie-rods which extend
across the machine between the two cheek-plates D. J is a trough the edges J'
of which are turned outward to rest upon the tie-rods I; the said trough
contains gum.
B' is a bracket upon the table, upon which the grooved hand-wheel K is journalled.
A portion of the boss of the hand-wheel is provided with a square socket K'
for a purpose hereinafter explained. L is a roller, encircled by a coating L'
of felt or other suitable material which dips into the gum in the trough J.
LL' are the journals of the said roller which are received in the slots D¹. One
of the said journals is provided with a grooved pulley L, and also with a squared
end L to receive the hand wheel K, which, when the coating devices are removed
from the table B and attached to any other support, is used to operate the roller L
directly.
M is a smaller roller, encircled by a coating M¹ of rubber or other suitable
material and provided with journals M' which are received in the slots D' and
ride therein freely, so that the said roller M will be kept in place by its
weight, and will bear upon the roller L or upon paper fed between the two
rollers. D D are notches in the cheek-plates D, in which the journals of the
rollers can be placed, when it is desired to remove the rollers from the slots D'
temporarily.
N is a reservoir for gum, supported upon a portion of the table B and provided
with a draw-off tap N₁ which delivers a reserve supply of gum into the trough J.
O is a band which connects the hand-wheel K and pulley L³ so that the latter can
be driven by the former.
In the operation of the said improved machine the edge of the paper to be
coated is introduced between the rollers L and M, and the roller L is rotated.
The paper passes over it, being coated in transit, by the gum brought up from
the trough upon the coating L₁. The weight of the upper roller M keeps the
paper in close contact with the roller L, and prevents any superfluity of gum
from getting under the paper, consequently a thin and uniform coating is received
thereby. The heat applied to the water in the bath F is transmitted by the

page_text: liquid contents thereof to the trough J, to keep the gum in a liquid condition.
The use of a bath such as F prevents, in a well-understood manner the possibility
of the temperature of the gum in the trough being raised beyond a definite degree.
In feeding separate sheets of paper between the rollers, each sheet is made
to overlap, very slightly, the end of the sheet which preceded it; thus the gumming
surface of the lower roller is prevented from coming into contact with the upper
roller.
The said upper roller may be raised by hand, when necessary.
In certain cases
I may fit to the apparatus a lifting-lever operated by a treadle, for raising one or
both ends of the upper roller. I may also provide means if desired for operating
the wheel K by foot-power. Also I may make the apparatus on a small scale for
gumming address-labels and other small articles.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
The apparatus, substantially as hereinbefore described with reference to the
accompanying drawings, with or without a table, for the purposes specified.
Dated this 18th day of October 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.