Improvements in Creasing or Grooving Card-boards and means therefor.
Year: 1896

page_text: Date of Application, 9th July, 1896
Complete Specification Left, 9th Apr., 1897-Accepted, 3rd July, 1897
PROVISIONAL SPECIFICATION.
Improvements in Creasing or Grooving Card-boards and means
therefor.
I, HEINRICH WOLLHEIM, of Villa Simmig, No. 344 Wilhelminenstrasse, Loschwitz
near Dresden, in the Kingdom of Saxony and German Empire, Gentleman, do hereby
declare the nature of this invention to be as follows:-
This invention consists in the method of and means for the creasing or grooving of
card boards, in such a manner that when the card board is placed upon a working
table over a flat bar sunk into the table with a groove therein, a beam carrying the
creasing bar or rule, arranged vertically over the said groove is lowered obliquely upon
the card board. When the said rule strikes the card-board, the card-board under the
rule is pressed into the matrix groove, thus producing the creases or corresponding
groove in the card-board.
If the card board has the tendency to bend or curve upwards at both sides of the
crease or groove, two pressing bars arranged at the sides of the scoring rule are
lowered with the latter until they strike the card-board and hold the latter on to the
working table.
The described method has the great advantage that the most brittle card-board can
be creased or grooved thereby, and secondly that, where the crease or groove is
formed, the card-board can be easily bent in both directions, because the card-board
has not been upset.
Dated the 0th day of Inl. 1000
FELL & JAMES,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Creasing or Grooving Card-boards and means
therefor.
I, HEINRICH WOLLHEIM, of Villa Simmig, No. 344 Wilhelminenstrasse, Loschwitz,
near Dresden, in the Kingdom of Saxony and German Empire, Gentleman, 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 a machine for creasing or grooving cardboard and similar
material in order to prepare those parts of the cardboard where edges are to be formed
by bending in the manufacture of boxes.
This invention consists of a creasing or grooving bar or rule adapted to descend
obliquely which at its descent pushes the cardboard into a matrix groove in the
working table and thus produces a crease or groove in the card board, or alternatively
the matrix groove is adapted to move and the grooving bar or rule descends vertically.
Machines of this class as constructed hitherto consist of a working table provided with
a groove and of a rule having an edge corresponding to the desired crease or groove.
Such rule descends vertically on to the card board which rests on the working table
D...oll

page_text: and thus creases the cardboard. These machines have the disadvantage that the
card board develops fine cracks in and near the crease, which become larger during
bending and cause the card board to break, particularly when it is brittle.
This invention obviates this disadvantage, because the cardboard receives a longitu-
dinal movement when the grooving rule descends and is thus gradually drawn into
the matrix groove.
In order that my invention may be the better understood I now proceed to describe
the same with reference to the accompanying drawings and to the letters and figures
marked thereon.
Figure 1 shews a longitudinal view of the machine partly in section.
Figure 1 shews diagrammatically the movement of the grooving bar or rule relative
to the table.
Figure 2 shews a transverse section of the machine.
Figure 3 shews a transverse section through the creasing or grooving device on an
enlarged scale.
Figure 4 shews a modification of the machine, and
Figure 5 shews a modification of the matrix groove.
To carry my invention into effect the working table a is provided with a flat bar b
having a groove e formed therein for the production of the crease or groove in the
card board. A beam e is adapted to move between two cheeks d above the table and
carries a grooving rule f. The beam e has oblique slots g through which engage
guiding pieces fixed to the parts d. The beam eis operated by a lever & fixed to an
axle resting in the cheeks d. An oscillating lever k is situated on the outer end of
the axle and is operated by means of an adjustable rod and an eccentric or crank
pin provided on a crank disc l. The axle of the latter is rotated by a pulley m
coupled thereto by a clutch or other device so as to be easily engaged and disengaged.
At the rotation of the axle the beam e with the grooving rule descends therefore
in the direction of the arrow shewn in Fig. 1, the edge f creasing or grooving the
cardboard while simultaneously moving the latter in the longitudinal direction of the
groove. Figure 1 shews the beam e with the grooving rule f in the positions at
the commencement of the operation and at the finish by the full lines and dotted
lines respectively.
The cardboard has generally a tendency to curve upwards at both sides of the
groove. In order to counteract this tendency pressing bars n are arranged at both
sides of the bar b which are connected by pins to the beam e and are spring pressed.
The bars n hold the cardboard down without interfering with its sliding movement.
In a modification of the mechanism which is shewn in Fig. 4 the beam carrying
the rule is moved vertically up and down by the draw bars and the grooved bar is
moved sidewards by means of the angular levers o; and springs p return the grooved
bar into the former position at the ascent of the beam. The effect is the same as in
the before mentioned construction.
Figure 5 shews a transverse section through the bar when the device is adapted
for very thick and brittle card board. The bottom of the matrix groove c is in this
case formed by a strip of India rubber or other elastic material which is conveniently
inserted into a dovetail shaped recess.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is :-
1st. An apparatus for creasing or grooving card board consisting of a grooving
rule adapted to enter into a matrix groove c in such a manner that the rule f and
matrix groove have a longitudinal movement relative to one another during the
grooving or creasing operation.
In such a creasing or grooving machine a grooving rule adapted to have a
diagonal downward movement in relation to a table for supporting the cardboard in
combination with a matrix groove upon the said table, substantially as described.
3rd. In such a creasing and grooving machine the support b with the matrix

page_text: groove c adapted to receive a longitudinal movement in combination with the rule f
moving vertically up and down substantially as described.
4th. In combination with the creasing and grooving machine as claimed in the
preceding claims the arrangement of spring pressed retaining bars m at both sides of
the grooving rule f in order to hold down the cardboard on the working table a
substantially as described.
5th. In combination with the machine as claimed in Claims 1, 2 and 3, the
elastic lining of the matrix groove c for working thick and brittle card board
substantially as described.
FELL & JAMES,
Agents for the Applicant.