Year: 1899

page_text: I, ULYSSES GRANT CHARLES, residing at 26, Fulton Street, in the City of
Oshkosh, in the State of Wisconsin, United States of America, Mechanical
Draftsman, 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 an improved machine for applying liquid glue to
veneer, boards, cardboard or other material in sheets or plates.
The invention consists of the machine, its parts and combinations of parts, as
herein described and claimed or their equivalents.
In the drawings,
Figure 1 is an end elevation of my improved machine, parts being broken
away and other parts shown in section for convenience of illustration.
Figure 2 is a side elevation of the upper operative parts of the machine, parts
being broken away and other parts being shown in section for convenience of
illustration.
Figure 3 is a top plan view of the machine, some parts being broken away
and omitted for convenience of illustration.
Figure 4 is an end view of the upper portion of the machine, the glue-applying
roll and the standards in which it is supported being tilted over to illustrate
a feature of the invention.
Figure 5 is an end view of the glue-applying roll, a part being broken away
showing interior construction in section."
Figures 6 and 7 are respectively an elevation and a top plan view of a plug
or key employed for securing the corners of the roll-covering screen in recesses
thereof in the rim of the roll.
Figure 8 illustrates the construction of the glue-applying roll, parts being
broken away and parts being shown in section for convenience of illustration
and to exhibit interior construction.
Figure 9 is a fragment of the roll-covering screen, in the form it is made for
being applied to the roll.
In the drawings, 10 is the frame made in suitable form and size for support-
[Price 8d1

page_text: ing the operative parts of the mechanism. In the top of the main frame there
is a shallow glue-holding tank 11, which is set in a receptacle 12 between
which receptacle and tank a steam chamber 13 is formed, the chamber being
adapted to hold a supply of steam and the condensed water therefrom for keeping
the glue hot in the tank 11 and preserving its liquid condition. The steam
chamber 13 is provided with steam through the supply pipe 14, which leads into
the chamber 13 and is provided with numerous apertures for discharging the
steam into the chamber. A discharge pipe 15 leading from the chamber 13
near its top is adapted to discharge the water of condensation from the chamber.
For taking up the glue from the tank 11 and applying it to a sheet or board,
a glue-applying roll 16 provided, which roll is provided with a shaft. 17 mounted
in the legs of any ancillary frame 18, the feet of which legs rest on the top
side edges of the tank 11 and are hinged thereto at one side whereby the
ancillary frame is adapted to be tilted over as shown in Figure 4, raising the
roll 16 out of the glue tank and carrying it substantially away from over the tank.
Just above the roll 16, and one at each side of the vertical plane of the axis
of the roll 16, are two bearing rolls 19, 19 parallel with the roll 16 and opposite
thereto, and mounted in head blocks 20, 20 movable vertically in the legs of
the frame 18. Screws 21, 21 mounted revolubly in the legs of the frame 18
turn by their threads through the head blocks 20, 20 and are adapted for raising
and lowering those blocks thereby adjusting the rolls 19 nearer to or farther
from the roll 16, as required for using the machine for applying glue either to
thin or thick material. A transverse shaft 22 mounted in the top cross piece
of the ancillary frame 18 and geared to the screws 21 is adapted, by means of a
crank to be applied thereto, for raising and lowering the rolls 19 by rotation of
the screws 21.
For rotating the roll 16, its shaft is provided with a gear wheel 23 that meshes
with a pinion 24 on an arbor 25 mounted on the frame and provided with a
belt pulley 26.
To adapt the roll 16 for taking up a suitable supply of liquid glue from the
tank 11, in which supply of glue the roll 16 is arranged to rotate, and for pro-
perly applying glue to the material, I provide a depression in the roll entirely
about the roll from near one end to near the other end, which depression is
filled with a liquid absorbing material 27, as felt, asbestos or some coarse fabric,
and over this glue-absorbing material and forming a covering for the entire
perimeter of the roll, is placed a wire screen cover 28. This construction of
the roll adapts it for holding a sufficient supply of the liquid glue, and for
applying it abundantly to the material, without any danger of pulling the glue
from the material as the roll rotates and separates from the article being supplied
with the glue. As a convenient and satisfactory means for securing the wire
screen cover 28 to the perimeter of the roll I cut a diagonal slit 29 in each of
the four corners of the screen, as cut and prepared to be fitted on the roll, and
then turn the thus prepared clips on the screen, along a line indicated by the
dotted lines, 30, 30 down into a recess 31, therefor in the chimes of the drum.
This recess 31 is preferably beveled inwardly from the outer surface on its
lateral walls, which are also so inclined as to make the recess dove-tailed in
cross section. I provide plugs or keys 32 (Figures 6 and 7) that fit into these
recesses against the downwardly turned clips of the screen, and hold the screen
cover in place on the roll. The keys are held in place detachably by screws 33
revoluble through bridges 34 and turning into the inner ends of the keys. The
feet of the bridges 34 rest against the inner surfaces of the chimes of the roll,
the roll being preferably of à drum-like construction.
From the foregoing description it will be understood that the material, as a
board A. can be covered with liquid glue on its under surface by running it
through the machine, being held to the surface of the rotating rolls 16 by the
rolls 19, and also that the passing of material through the machine and thus
coating it with liquid glue can be continued indefinitely. Also that the rolls 19

page_text: can be readily raised or lowered to adapt the machine for passing material of
different thicknesses through it and holding the material to the surface of the
glue-applying roll 16.
For some kinds of work, especially for coarse and heavy work, and particu-
larly if the glue to be applied is a stiff or thick composition, a roll may be used
in which the absorbing material 27 is omitted, and a screen is secured directly
to the non-depressed surface of the roll. Such a screen whether constructed of
reticulated material or of a perforated sheet of metal will serve the purpose of
taking up and applying the glue, under the conditions stated, and in such case
would be the equivalent of the preferable form of construction herein before
described. Also if a large glue-applying roll is required for any specific work,
it may be desirable to secure the screen cover to the roll otherwise than at the
corners of the sheet as herein before described, and in such case clips may be
formed by cutting the screen at different points in its margin, and these clips
may be turned down into recesses formed in the chimes therefor substantially
like those shown in the drawings, and the clips may be secured therein by
keys like those herein before described.
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:-
1. A roll provided with recesses in its chimes extending inwardly from its
exterior surface, a screen cover about the roll, clips formed of the cover turned
into said recesses, and plug keys inserted in the recesses against the clips therein,
and means for securing the keys in position detachably.
2. In a glue-applying machine the combination with a frame and a tank
thereon for holding liquid glue, of a glue-applying roll consisting of a cylinder
provided with an annular depression in its perimeter medially extending nearly
from end to end thereof, a felt or analogous liquid-absorbing material secured
to and filling the annular depression in the cylinder, and a wire screen cover
over the felt absorbing material secured to and closely covering the perimeter
of the cylinder.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.