Improvements in Means or Apparatus for Gumming, Glueing, or Coating Sheets of Paper or other Material.
Year: 1899

page_text: Date of Application, 14th Mar., 1899
Complete Specification Left, 11th Jan., 1900-Accepted, 17th Feb., 1900
Improvements in Means or Apparatus for Gumming, Glueing, or
Coating Sheets of Paper or other Material.
A communication from abroad by MARK DEAN KNOWLTON and FRED HOSMER
BEACH, of 29-35, Elizabeth Street, Rochester, in the State of New York,
United States of America, Paper Box Machinery Engineers.
I, ALFRED GEORGE BROOKES, of 55 and 56, Chancery Lane, in the County of
London, Chartered Patent Agent, do hereby declare the nature of this invention
to be as follows: -
This invention relates to certain improvements in means or apparatus. for
gumming, or glueing sheets of paper, or other material, and has for its object to
ensure that the gum or glue employed shall be kept clean and free from dirt and
particles of paper, scum or other matter that would interfere with the proper
working of the materials.
The improved gum, or glue strainer apparatus consists of a glue or gum pot
which is kept replenished by any suitable means. This strainer portion of the
pot" has solid sides and a lip and a bottom or strainer of fine wire gauze or
suitable reticulate work. The lip rests on or against the glue roll acting as a
scraper to remove all the liquid from the roll and make it pass through the
strainer, thereby affording a constant flow of clean gum or glue next to the roll.
The quantity of gum, or glue applied can be so controlled by the operator that
a thin or thick coating of such matter can be applied alternatively to successive
strips of paper.
In the improved strainer apparatus the gum, or glue, passes into the strainer
and therefrom onto and along a plate preferably inclined towards the roller.
This plate is preferably of metal underlying the straining bottom and therefrom
the glue or gum flows to the bottom of the pot, and then under and over the
plate to the glueing roller and the strips; and then the roller again comes into
contact with the lip to be stripped of the glue, not removed onto the paper, and
the same cycle of movements is repeated. By these means constant circulation
of the glue (or gum) is maintained, and consequently any foaming, or frothing
thereof is prevented as is also the formation of any skin on the adhesive matter.
Such a gumming, glueing or coating apparatus may be used for coating any
paper, or like material, for use by box makers, or others requiring strips coated
with adhesive matter and it may be used in conjunction with suitable known
delivery apparatus of the apron or other type.
1000

page_text: improvements in means or apparatus for Gumming, Glueing, or
Coating Sheets of Paper or other Material.
A communication from abroad by MARK DEAN KNOWLTON and FRED HOSMER
BEACH, of 2935, Elizabeth Street, Rochester, in the State of New York,
United States of America, Paper Box Machinery Engineers.
I, ALFRED GEORGE BROOKES, of 55 and 56, Chancery Lane, in the County of
London, Chartered Patent Agent, 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 that class of machines adapted for applying an adhesive
substance, such as paste or glue, to sheets of paper or other material.
In the class of machines, in which the tank or receptacle for containing the
glue or other adhesive substance discharges its contents by gravity directly upon
the surface of a revolving pasting or glueing roller, the action of the roller
causes a revolving motion of the glue at the point of its discharge from the tank,
which motion of the glue produces a framing of the same at such point which
prevents even and. uniform coating of the roller by the same. Furthermore,
the movement or agitation of the glue being confined to one point, permits the
formation of a coating or skin on the top of the glue, pieces of which, if not
carefully removed from time to time, get lodged between the roller and the
adjacent edge of the tank bottom or so called scraper and clogs the flow of the
glue at such points, thus causing the roller to become coated in streaks. To avoid
such objectionable features, and in accordance with the. present.invention, I have
supported a wall or partition within the tank adjacent to its point of discharge,
which partition serves, to direct the flow of the glue under. the action of the
roller, causing the same to flow backward under said partition toward the rear
of the tank and then return over the top of the partition to the roll. A perfect
circulation of the contents of the tank is thus secured, which tends to prevent
foaming, allows any foam bubbles to burst before returning to. the roller that
might have formed, and also prevents the formation of any coating or skin on
the top of the glue.
The above features, and others forming part of the present invention, will be
hereinafter set forth in detail and pointed out in the claims.
Referring to the drawings.
Fig. 1 is a longitudinal vertical section through a machine embodying this
invention.
Fig. 2 is a plan view of the machine with certain of the parts broken away.
Fig. 3 is an enlarged side elevation of a portion of the machine.
Fig. 4 is a side elevation of a portion of the machine, showing a heating
apparatus connecting with the glue tank for keeping the glue or other adhesive
substance in a fluid or semi-fluid condition.
Fig. 5 is a plan view of a portion of the construction shown in Fig. 4, and
Figs. 6 and 7 are enlarged detail views of a portion of the heating apparatus
to be hereinafter referred to.
To explain in detail, the revolving pasting or glueing roller 1, to the surface
of which the glue or other adhesive substance is applied and from which said
glue or adhesive substance is transferred to the paper sheets brought into contact
with said roller: the opposing feed rolls 2, 2 for carrying the paper or other
sheets (indicated at a in dotted lines) from the table 3 toward or into contact

page_text: with the roller 1; the guide 4 located between the feed rolls 2, 2 and the roller. 1
for directing the sheets passing from said feed rolls toward and against the
surface of the roller 1 approximately at right angles with said surface at the
point of contact; the fingers 5 resting in contact with the roller 1 and acting
to deflect or throw outwardly from the surface of the roller the sheets adhering
thereto; and the carrier belt or apron 6 arranged in position to receive the paper
sheets as the latter are removed from the roller 1 by the action of the fingers 5;
all being supported and sustained upon a suitable frame 7, are or may be of
substantially known or other convenient construction, arrangement and mode of
operation.
The tank or receptacle 8 for containing the glue or other adhesive substance,
as herein shown, is supported between two vertically arranged plates 9, 9, which
latter are located at opposite sides of the frame 7 and each provided with a
flange 10 which rests upon the supporting frame and is secured thereon by bolts
or screws 11, 11. One end of these plates 9, 9 are constructed to conform to the
surface of the roller 1 and the plates are supported with such end in close
contact with said roller, as shown in Fig. 3. The glue tank S is supported
between the plates 9, 9 by means of pins or studs 12, 12 at each end thereof
which project through elongated slots, 13 in the opposite plates 9 and are secured
at their outer threaded ends by means of nuts 14. The sides of this tank at
the rear or open end of the same are also constructed to conform to the surface
of the roller 1 and rest against the latter as a partial support to the tank, the
latter being held in proper horizontal position against undue tilting on the
pins 12, 12 by means of two plates 15, 15 which are secured on the upper edge
of the supporting plates 9, 9 by means of screws 16 with one side projecting
over the upper edge of the tank, as shown in Fig. 2.
As a means for adjusting the tank so that the edge of its bottom may be a
greater or less distance from the pasting roller 1, as may be necessary for feeding
a desired quantity of glue to the said roller, 1 have supported an eccentric
shaft 17 in suitable bearings in the plates 9, 9 at the rear end of the glue tank,
which shaft is operatively connected with the projecting ends of the pins 12, 12
on the tank. By turning this shaft 17 in the proper direction by means of a
hand wheel 19 thereon, the operator may thereby readily adjust the position of
the tank back and forth relative to the roller.
The connections between the shaft 17 and the tank, as herein shown, consist
of two screws 20, 20 each having an end collar 21 fitting over the end of the,
pins 12, 12 on the tank, two screws 22, 22 having an end collar 23 embracing
the shaft 17, and internally threaded sleeve 24, 24 uniting the opposite screws 20
and 22, which latter are provided with right and left hand screw threads respec-
tively. By this construction, turning of the sleeves 24 in the proper direction
will cause either a forward or backward movement of the tank relative to the
pasting roller and enable the opposite ends of the same to be adjusted to different
legrecs of nearness to the said roller, whereby the thickness of the coating on
the latter may be varied towards its opposite ends for different kinds of work.
The lower or bottom wall 25 of the tank is preferably inclined downwardly
toward the roller as shown, and above such bottom is suitably supported the wall
or partition 26 for causing a circulation of the glue or other adhesive substance
throughout the tank. This partition 26, as shown, consists of, a plate which
extends across the tank with a relatively small space between the same and the
bottom of the tank and with a space between its rear edge and the adjacent
roller and between its opposite or forward edge and the adjacent wall of the
tank, thus permitting the passage or flow of the glue entirely around the same.
By such arrangement of the partition 26, the glue, under the action of the
revolving pasting roller 1, is forced back constantly beneath said partition and
caused to How in the direction indicated by the arrows and return to the roller
cver the top of the partition. Such circulation of the glue, as before mentioned,
prevents the formation of any coating or skin on the top of the same, tends to

page_text: prevent foaming, and insures the glue becoming thoroughly settled by the
ume it returns to the pasting roller 1.
The partion 26, in the present instance shown, is supported in a removable
position in the tank by means of a suitable frame composed of two plates 27, 27
with which the partition is connected at its opposite ends, and a rod 28 extending
through said frame plates 27, 27 with its ends projecting beyond the outer sides
of the latter. Such frame is removably supported in position within the glue
tank with the ends of the rod 25 resting upon the retainer plates 15, 15 and the
forward upper ends of the plates 27, 27 resting directly upon the roller 1, as more
clearly shown in Fig. 1. The frame is held in its proper position relative to
the roller by means of two bracket fingers 29, 29 secured on the plates 15, 15,
beneath which the ends of the rod 28 are inserted when the frame is placed
into the glue tank.
The means for scraping the surplus glue or other adhesive substance from
the roller, together with any particles of paper which may adhere thereto, and
subsequently straining the same before the glue is returned to the tank, is or
may be similar to those in present use, or be of any convenient form. In this
instance, I provide a plate 30 which is supported at one side by a cross rod 28
and at its opposite side is formed with a sharp or thin edge adapted to rest
directly against the surface of the roller 1, the plate being inclined downwardly
or away from the roller and toward the tank, as clearly shown in Fig. 1.
The central portion of this plate 30 is cut away so as to form an opening
therein which opening is covered with wire cloth or other suitable perforated
material 31 which receives the material scraped from the roller and strains the
glue before the latter returns to the tank, the passage of the glue over the
scraper and through the strainer being indicated by arrows in Fig. 1.
In keeping the glue or other adhesive material in the tank properly heated,
it has been found that the use of steam of the proper temperature when brought
into contact with the glue tank, will cause the latter to unduly expand and so
warp the same as to render it useless. For such reason it is found desirable to
use hot water as a means for heating the glue, and the apparatus employed for
such purpose according to this invention is as follows:-The glue tank is provided
with a chamber 32 extending across its under side and terminating adjacent to
the opposite ends of the tank at the rear side thereof. Pipes or other suitable
conduits 33 and 34 connect the opposite ends of said chamber 32 with a water
tank 35 so as to provide a circulation between the same, the said water tank
being supported upon a suitable platform 36 which is carried by the main sup-
porting frame through the medium of suitable intermediate supports not shown
in the drawings. The pipe 33, through which the water passes from the tank 35
to the chamber 32, extends through a heating chamber 87 in which the water
passing through the pipe is heated to the proper temperature before entering the
glue tank chamber 32, the said pipe 33 being formed with a coil 39 in the heating
chamber 37 so as to provide an increased heating surface.
The heating chamber 37 is formed in a frame or casting 40 which, as shown,
is located beneath the feeding table of the machine and secured to the frame 7
by means of bolts or screws 41, 41. This heating chamber 37 is adapted to be
heated either by the introduction of steam therein, or by gas, as may be desired.
When used for steam, the chamber is made air tight and the steam is introduced
therein through a pipe 42 which opens into the chamber through a removable
plate 43 having a screw threaded connection with the lower end of the casting 40,
which latter is also provided with a pet cock 44 removably connected therewith
for the exhaust steam.
To adapt the chamber 37 for gas heating, the plate 43 is first removed from
the casting 40, the pet cock 44 then detached from said plate 43 to permit of
the insertion of a gas burner attachment 45 in the opening from which said pet
cock-is removed, the plate 43 with the supported gas burner attachment then
again screwed into connection with the casting 40, and a removable plate or

page_text: ring 46 at the top of the chamber then removed to permit of the entry of air
therein, as shown in Fig. 7.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is, in means or apparatus for gumming, glueing or coating sheets of
paper or other material:-
1. In a machine of the class described, the combination, with a revolving roller
and means for feeding and carrying sheets to be operated upon against the
surface of said roller, of a glue tank or receptacle discharging by gravity upon
the surface of said roller, and having means located therein adjacent to the point
of discharge of the tank for directing the flow of the glue at such point, for the
purpose set forth.
2. In a machine of the class described, the combination, with a revolving
roller and means for feeding and carrying sheets to be operated upon against
the surface of said roller, of a glue tank or receptacle discharging by gravity
directly upon the surface of said roller, and having a wall or partition located
therein with a space or passage around the same between the tank and the roller,
for the purpose set forth.
3. A glue tank or receptacle having an open side through which it is adapted
to discharge by gravity, and a wall or partition located therein adjacent to its
point of discharge with a space between the tank and said partition to form a
continuous passage around the latter, for the purpose set forth.
4. In a machine of the class described, the combination, of a glue receptacle
having a chamber on its under side, a water tank, inlet and outlet connections
between said water tank and glue receptacle for form a circulation between
the same, one of said connections being formed with a coil, and a chamber
enclosing said coil having means for the introduction of heat therein, for the
purpose set forth.
5. In a machine of the class described. the combination. of a glue receptacle
having a chamber on its underside. a water tank, inlet and outlet connections
between said water tank and glue receptacle to form a circulation between the
same. one of said connections being formed with a coil. and a heating chamber,
enclosing said coil having a removable plate for the support of a heating or heat
introducing device, and a second removable plate or device for admitting or
closing off the air from said chamber. for the purpose set forth.
6. The means and apparatus for straining the glue or like coating matter
and preventing the production of foaming or frothing or the formation of a skin
or coating in the application of glue or the like upon the sheets, substantially
as hereinbefore described and illustrated by the drawings.
7. The construction and use of the means or apparatus for heating the glue
or other matter and for straining and preventing the production of foaming or
frothing or the formation of a skin or coating in the application of glue or the
like upon the sheets, substantially as hereinbefore described and illustrated by
the drawings.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.