and Apparatus for the Purpose.
Year: 1887

page_text: and Apparatus for the Purpose.
We, JEAN SCHERBEL and TEODOR REMUS, both of Dresden, Kingdom of Saxony,
Empire of Germany, Merchants and Manufacturers 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 :—
The object of this invention is to mechanically cover the folding or creasing parts
and also to bind the edges of paper and like boxes with strips of paper or other
material.
At present card-board boxes are manufactured in which the corners and edges are
covered with strips of paper by hand. This method occupies a great amount of time
on account of the boxes having to be turned about in the hands several times. In
order to enable the work to be done in less time we have invented a mechanical
method of applying strips to the folding parts and also to apply other strips to
border or bind over the edges of the unformed boxes during their manufacture out of
the sheets of cardboard.
In order to carry out this invention, we employ a machine, which is shown on the
annexed drawings, Figure 1 being a front elevation, Figure 2 a vertical section
through A, B, and Figure 3 a plan view.
Over the horizontal feed roller w are arranged pressure rollers a a and b b with their
axles parallel to the said feed roller. These rollers are represented on the drawing
carried in horizontal adjustable fork shaped carriers, in which they rotate but are
capable of being held in place with regard to horizontal position upon their axles by
spiral or helical springs.
.
At the sides of a a are discs e e, not fixed thereto, but only held firmly against them
by the pressure of the springs d d, they are larger than the pressure rollers a a because
they serve as edges to them.
The holes for the spindles to pass through in these side discs are so large that the
pressure rollers can act upon the sheet of cardboard under operation, the side discs
giving way to allow them to come into action as represented in the drawing.

page_text: Above each of the pressure rollers a a is arranged a roller c upon which is wound
a long strip of paper or other material. This long strip is led from the roller c to the
pressure roller and supplied with adhesive matter from the roller g or in case the strip
is provided with an adhesive surface before being wound on the roller the adhesive
surface is wetted by contact with the roller g. The strips thus fed are pressed on to
adhere to the surface of the cardboard.
In front of the pressure rollers b bare grooved rollers h h (Figure 3) with projecting
In the drawing
rims or edges, arranged in position relative to the feed roller w.
these grooved rollers h h are shown arranged on adjustable angle pieces ii to take
other strips of paper from grooved rollers k k which also carry strips of paper or other
material, which on its way from the roller k to the grooved roller his supplied with
adhesive matter (or it may be with water) from rollers or hollow cylinders 11. The
rollers kk are arranged upon the angle pieces ii or in any other suitable manner.
For the purpose of putting strips on forming a border or a binding to the edges
the sheet of card or pasteboard (when it is cut to form the box and when the parts
which have to be bent are grooved) is driven in with its side edges between the angle
pieces until it is led to the feed roller w, by this it is moved through the apparatus
under the pressure rollers b b. By this means a strip or border is fixed on and over
the side edges of the sheet of card or pasteboard by the grooved rollers hh, said strip
being bent so much by the groove of the rollers, that the pressure rollers 66 have only
to press it down onto the margin of the pasteboard. The strip carried by the pressure
rollers a a and held between the discs, e e is laid over the groove or on any other desired
portion of the sheet of board, the rollers a a having previously been moved into the
proper position for the purpose.
If the sheet of card or pasteboard to be cut up into boxes be particularly strong or
the parts to be bent are slit on the outside, the strain on the dilatability of the strip
becomes very high on bending the edges. In such a case it is necessary to bend part
of the strips in the following manner :-
The strip, is not made to lie flat upon the pasteboard, but forms, a little. arch over
the slit or portion of the board to, be bent as in Figures 4 and 4a. When the part
of the board is, afterwards, bent over, the arch shaped part lays smoothly on the
corner of the box.
In order that the strip made by means of this process can be stuck on the paste-
board by the hereinbefore described machine, instead of using the pressure rollers a a
with flat pressing surfaces, the pressure rollers are channeled in the pressing surfaces
as shown at Figure 5. In front of each of the said channeled rollers is placed a
counter roller m which fits on its edge into the groove formed in a.
Between the
rollers a and m the gummed or adhesive strip is made to pass and thereby gets the
curved or channeled form, Figure 4, before it is, or simultaneously when,, stuck upon
the sheet of pasteboard.
Figure 6 of the annexed drawings show a sheet of paste-or-cardboard to which the
corner strips, and also the edging or border or the binding strips, have been applied,
by the above described means..
Out of the sheet of pasteboard so prepared, the box is made by cutting off the
corner pieces and by bending the sides and ends and attaching them together.
In working such materials as require warmth for binding them together, the pressure
rollers a a and b b could be heated by a jet of flame or otherwise.
By means of the before described method, not only is the sticking of the corners
and forming a border or binding to the edges done by a direct movement, but a saving
of time is effected as compared with the methods at present in use, all'edges and bends
which are parallel having strips applied to them by a single operation.
Having now, particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we claim is,:-
1. In the manufacture of pasteboard and like boxes mechanically sticking flat or
curved strips. of paper or other material on boards and also on border or edges while
the sheet of pasteboard is still in a flat state as hereinbefore described.

page_text: 2. The machine shown on the annexed drawing for carrying out this method in
which flat or grooved pressure rollers a a and b b are arranged with their axles parallel
to a feed roller w, said rollers, which attach the paper strips as shown, and the adjust-
able grooved rollers (which bend and apply the strips to the edging or borders)
parallel to the feed roller w, the pressure rollers a a held in position by springs d d
with automatically moveable rim forming discs e e, with or without the counter
rollers m in connection therewith as set forth.