Improvements in Scoring and Grooving Machines for Cardboard and like Material.
Year: 1896

page_text: Date of Application, 10th Oct., 1896-Accepted, 14th Nov., 1896
COMPLETE SPECIFICATION.
Improvements in Scoring and Grooving Machines for Cardboard
and like Material.
We, OTTO SCHUBERT, Engineer, and MAX SCHUBERT, Manufacturer, both of
64a Reinickendorfer Strasse, Berlin, in the German Empire, 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 present invention relates to a scoring and grooving apparatus which differs
from the apparatus of this kind known hitherto, in that a circular scoring knife is
no longer used in the same, but that in place of the said knife there is employed a
roller which is provided with a groove of the same width as that of the chip to be
grooved out. The chip knife or lifter lies within the groove of the roller upon the
underside and raises the material to be grooved out, and presses it against the
sharp edges of the groove in the roller, whereby the said material is cut off after
the manner of scissors, as the cardboard is moved forward. In this manner there
is obtained a chip cut out with constant uniformity, whilst all breaking off of the
material being grooved is rendered impossible.
The accompanying drawings illustrate by way of example a form of construction
of a grooving apparatus of this kind, in which-
Figure 1 is a side elevation of the complete grooving apparatus, and
Figure 2 is a plan thereof.
Figure 3 illustrates a roller with groove and axle.
Figure 4 illustrates the chip-knife or chip lifter.
Figure 5 illustrates the chip-lifter with chip-guiding tongues.
As shown in Figure 1 the apparatus consists of the holder a, the roller, c, the
chip-lifter r, the chip-lifter holder h, and of a chip-guiding tongue e, which is
preferably fixed to the holder .
The roller c, (see Figure 3) has a groove u and two journals d. The roller is
supported by means of these journals d in the holder a. As the chip to be cut
from the cardboard must frequently be of different thicknesses, consequently it is
clear that the groove u in the roller must also be of various dimensions, whilst also
its width must correspond with that of the chip to be cut, therefore it is necessary
for this purpose that the roller c shall be adapted to be readily exchanged. This
is best done by making the holes d¹ for the reception of the journals d open at the
bottom; a spring p pivoted on a screw being provided to prevent the roller from
falling out. The chip knife r is inserted dovetail fashion in the holder h and is
secured by means of a screw o, which allows of the knife moving forward and
backward so that the chip-knife can be set up or adjusted. The chip-guiding
tongue e is preferably connected with the holder in any suitable manner.
holder / may be fixed in the part a by means of a screw i as usual; a screw k
serving to allow of adjusting the vertical position of the chip-knife as required.
The chip is grooved or cut out in the following manner-
The
The holder a with the roller c is screwed down in the apparatus to such an
extent as to cause the said roller to press the cardboard to be grooved firmly
against the feed roller b. Then the chip-lifter or the chip-knife r is set with its
cutting edge below the roller c a depth corresponding to the desired thickness of
the chip. The chip lifter must of course fit exactly in the groove u of the roller c,
so that the sharp edges s s of the roller c and the sharp edges of the chip-
lifter slide scissors-fashion past one another. If now the cardboard be moved in

page_text: the direction of the arrow by rotation of the feed roller the chip-knife will
enter the cardboard, will lift it slightly and press it against the sharp edges s s of
the pressing roller c, and on the cardboard being fed along still further, the chip-
knife will force it completely into the groove u. The chip-guiding tongue e now
acts to guide the chip when lifted out. As already stated, each different width of
chip requires a special roller c with corresponding groove u, whilst of course it is
always necessary to have a knife corresponding to the width of the groove.
As in many cases it might be perhaps inconvenient to have to remove the roller c
each time the groove is changed, it might perhaps be advisable to make the
roller e in two parts so as to allow of setting the groove u to a greater or lesser
width. In such cases, when it is desired to change the width of the groove it is
only necessary to take the knife r and the guide-tongue e out of the holder a and
to insert a correspondingly wider or narrower knife and a corresponding guide
tongue e.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is ;-
1. An apparatus for grooving cardboard and similar materials, in which the chip
is cut out scissors-fashion by means of a roller c with groove u in combination with
the chip-knife r.
2. An apparatus for grooving cardboard and similar materials arranged and
operating substantially as herein before described.
Dated this 10th day of October 1806
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.