Improvements in Machines for Making Folds in Paste-board.
Year: 1898

page_text: Date of Application, 15th Jan., 1898-Accepted, 7th May, 1898..
COMPLETE SPECIFICATION.
Improvements in Machines for Making Folds in Paste-board.
I, PETER JENSEN, of 77, Chancery Lane, London, Chartered Patent Agent, do
hereby declare the nature of this invention (a communication to me from abroad by
Falz-Baupappenfabrik, Patent Fischer," a company with limited liability, at
Rawitsch, in Posen, Germany,) 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 improvements in machines for making folds in paste-
board which contain a number of groups of dies, each group consisting of an upper
die and a lower die. The upper die forms with the lower die a holder, which can
be displaced horizontally. Between each two holders is arranged, by means of a
joint-lever, an intermediate holder in such a manner, that it moves vertically when
the two other holders are moved together. The folds formed thus in the paste-
board are set or rendered permanent by means of the steam circulating in the lower
dies. The upper dies are connected at one end with the frame by means of hinges
whilst the other end serves to connect temporarily the upper die with the lower
die.
In the present invention the intermediate dies are provided with a device, by
means of which they can be fixed or lifted in such a manner, that the lower edge
of the die lies about two millimeters above the paste-board.
Further the intermediate dies are adapted to avoid the following inconvenience.
In the machines hitherto used, the intermediate dies have such a downward motion,
that they reach their lowest position, when the other die pairs are nearest to one
another, which causes the folds to be squeezed between the lower dies. In the
new apparatus the intermediate dies end their downward movement before the die
pairs have approached most nearly to one another.
Instead of being moved by hand, the intermediate dies may also be moved
automatically, downwards, by providing the joint lever arms on the lower end with
an angular slot, instead of a perforation. The die pairs are fixed in their different
positions by means of stepped bars, engaging at both ends with pins which are
fixed on two adjoining lower dies.
The improved machine is shown in the accompanying drawings in which
Figure 1 is a side view partly in section.
Figure 2 a front view of the machine.
Figure 3 is a detail view of Figure 2,
Figure 4 a nlan view of the machine,
Figures 5-7 show different positions of the dies,
Figure 8 is a broken side view to an enlarged scale of the joint lever arms and
bar for regulating the position of the die pairs.
tional len on line 9 9 Figure 8

page_text: Figure 10 is a front elevation to the same scale of the regulating bar and joint
lever arms.
Figure 11 is a plan of the coupling device of the upper dies with the inter-
mediate dies.
Figures 12-15 show elevations of a modified device for lifting the intermediate
dies in different positions,
Figure 16 shows another modification of the toggle or joint lever device,
Figure 17 shows a side view of an intermediate die and
Figure 18 a side view of an upper die,
The lower dies f which can be displaced on the horizontal girders d, are provided
with pins g', entering the slots of links g. Besides that, the pins of two adjoining
lower dies traverse a loop G (Figures 5 and 10) formed with symmetrically
arranged set-offs G1 G2G³. The set-offs G3 G³, nearest to one another, are directed
upwards, so that two adjoining lower dies f are nearest to one another, when the
pins g¹g are between the set offs G3 G3; for instance the distance of the lower dies
may in this position be 1 mm. When the pins are situated between the set-
offs G2 G2 the distance is 5 mm., and to the set offs G¹G¹ corresponds a distance of
15 mm.
All the loops G must be moved uniformly up and downwards which is accom-
plished by means of shafts 1. 1. Figures 1, 2, 4 one at each end of the machine.
Each of these shafts is provided with a tooth or feather 2, running from one side
of the frame to the other and engaging with a slot G4 of the loop G (Fig. 10.). To
secure a uniform rotary motion of the shafts, one of them is provided with a hand
lever 3, Fig. 2, and connected with the other shaft by means of a lever A, rod 4
and lever 5. The hand lever moves along a quadrant 6, secured to the frame and
provided with three holes 7 corresponding to the set offs G'G² G³.
The horizontal displacement of the lower dies f is performed by means of two
spindless, the screwed ends of which engage with nuts in the tooth wheels l
Figure 4. One of these wheels is provided with a hand wheel R. The spindles
are connected with the first lower die f by means of a step-bearing s¹ in the latter.
The coupling for moving the upper dies horizontally and together with the
lower dies f is accomplished by means of a hinge-joint as shown in Figures 2
and 3. The upper dies h are at the end opposite to the hinge joint h¹ provided with
a wedge shaped pin 8, which, when the upper die rests on the lower die, enters a
corresponding recess 9 of the latter.
The device for moving vertically the intermediate dies n Figs. 1, 3 and 4 consists
substantially of two horizontal shafts 10, 10 Figs. 2, 4 and 18 supported in bear-
ings 111 of the frame. One shaft 10 is provided with a hand lever 11 and a
lever 12 which is connected by means of a rod 13 with a lever 14 on the second
shaft 10. The hand lever 11 moves along a quadrant 15, fixed to the frame and
provided with three holes 16, corresponding to the three positions I, II, III of the
lever.
The intermediate die n Fig. 17 is provided with the two teeth n¹n¹, one of them
being disposed on the arm or head na on the after end of the die, whilst the other
is fastened to an upwardly directed arm n³ of the die. These teeth n are adapted
to engage with the teeth 17, 17 of each of the shafts 10. When lever 11 occupies
its lowest position indicated by III In Figure 2, the intermediate die is fixed by
each tooth n', engaging with its tooth 17. If, however, the lever 11 is moved into
position II, the intermediate dies n are moved downwards while in the position I
of the lever 11 the teeth n¹ are disengaged from the teeth 17.
A shaft 19, which by lever 26 and rod 25 is connected with a third hand lever 18
Figs. 1, 2, 4, influences the joint levers between the upper and intermediate dies
in the following manner. The shaft 19 Fig. 3 is supported in an eye 16 of the
head 2 of the first and last upper die h and is provided with two eccentrics 20,
Fig. 2. The eccentric rods 21 are connected with slides 22, Figs. 2 and 5, to
which are fastened horizontal rods 23, 24. On the opposite side of the machine is
disposed another shaft 19 with eccentrics 20, eccentric rods 21 and horizontal

page_text: rods 23, 24. By these means it will be seen, that these horizontal rods can be
moved by turning the shafts 19. To turn equally both shafts, the hand lever 18
is as stated connected with a lever 26 on the other shaft by means of a rod 25.
The rods 23, 24, traverse slide blocks 27 Figs. 5, 6, 7, 9 and 11 sliding in the dove-
tailed heads he h³ of the upper dies, the slide blocks having pins 29 for the links k
which serve to connect the upper dies with the intermediate dies. These pins
enter slots 30, provided in the links whilst the pius 31 of the intermediate dies
engage with holes 32 in these links. It will thus be observed, that the intermediate
dies can be moved vertically without displacing the upper dies. This movement
of the intermediate dies is performed by pushing the hand lever 11, Figure 2,
from position II into position III and vice versa.
The operation of the machine is as follows:
-
As will be seen from Figure 5, the upper dies h and the intermediate dies n will
be in their uppermost position, when the pasteboard is being put into the machine.
Hand lever 11 occupies the position II Fig. 2, hand lever 18 occupies the
position I and hand lever 3 the position I. Therefore the pins g¹ are situated.
opposite to the set offs G¹, Figs. 5 and 10 and the lower dies f are at their greatest
distance from one another. By turning the hand wheel R the die pairs are some-
what approached to one another. In order to prevent the folds of the pasteboard
from being squeezed between the lower dies, the intermediate dies must reach their
lowest position before the lower dies have come nearest to one another. This is
performed by turning the hand lever 11 into the position III., whereby the inter-
mediate dies are pushed downwards by means of the feathers or teeth 17. Then
the die pairs can be approached entirely to one another. In order to secure the
upper dies against an upward movement, the hand lever 18 Figure, 2, is turned
from position I to position II, whereby the rods 23, 24 side blocks 27 and pins 29
are moved downwards, the pins 29 sliding in slots 30, provided in the links k.
The hand lever 18 is fixed in its position by means of a catch.
The steam for heating the lower dies fis supplied by means of pipes tt¹, Figs. 1
and 2. Before admitting the steam, the intermediate dies must be drawn out of
the folds which only can be done when the die pairs are removed from one another
as far as shown in Figure 7, that is to say, till pins g' are situated opposite to the
set offs G. Therefore the hand lever 3, Figure 2, must be turned into position II.
Then the intermediate dies n are lifted by turning the hand lever 11 into
position II, whereupon steam may be admitted.
When the pasteboard is entirely dried, hand-lever 11 is turned into position I,
Figure 2. The upper and intermediate dies, connected to one another by means
of the joint levers, can be opened by turning them around the hinge-joints h² and
the folded pasteboard may be drawn off.
The automatical lead of the intermediate dies is accomplished as follows, with
respect to Fig. 12-15. The links K are provided with circular openings Ka
adapted to engage with pins 29 of the upper die heads h². The pins 31 of the
intermediate dies n enter the angle-shaped slots K¹ formed in the links K. The
legs of each slot are perpendicular to each other and one of them
parallel with
the axis of the link whilst the other is curved in such a manner, that the centre
of this curve is also the centre of pin 29. In the position shown in Fig. 12 the
pins 31 are situated at the end of the transverse leg of the slot K¹. When the die
pairs are approached to one another, Fig. 13, the intermediate dies n move down-
wardly and the sloping sides K³ of the links K touch the wedge shaped shoulders H.
When the die pairs have reached the position shown in Fig. 14, the intermediate
dies are stopped and the links K swing round the pins 29, being pushed aside by the
shoulders H. The pins 29 get into the axial leg of the slot K', whereupon the inter-
mediate dies may be readily lifted, Fig. 15.
Any upward movement of the upper dies is prevented by a bar 23, Fig. 16,
5 which places itself on the upper end of the link K, which links are connected to
the upper die heads h² by means of pins 29. Instead of these links K there may
also be employed the bars, shown in Figs. 5-7.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed (as communicated to
me by my foreign correspondents) I declare that what I claim is:-
1. In machines for making folds in pasteboard the combination of lower and
upper dies fh, with intermediate dies m, connected to the upper dies by means of
links k, forming toggle or joint levers, substantially as described.
2. In machines for making folds in pasteboard the combination of lower and
upper dies f, h, spindles s for approaching these die pairs to one another, tooth
wheels to move said spindles and a hand wheel R, substantially as described.
3. In machines for making folds in pasteboard the combination with upper
dies of die heads h³, pins 29 fitted in these heads and links k, provided with
slots 30, engaging with said pins, substantially as described.
4. In machines for making folds in pasteboard the combination of intermediate.
dies and teeth n¹ fitted thereto, with two horizontal shafts 10, provided with
corresponding teeth 17, the two shafts being coupled together by means of
levers 12 and rods 13, substantially as described.
5. In machines for making folds in pasteboard, the combination of intermediate
dies n shafts 10 engaging therewith and a hand lever 11 fastened to one of these
shafts, for the purpose of turning said shafts and moving downwards the inter-
mediate dies, before the die pairs f, h have approached most nearly to one another
substantially as described.
6. In machines for making folds in pasteboard a modification K in the links k
said links K being provided on one end with an angular opening K2 and engaging
with pins 29 fitted to the die heads 2 and on the other end provided with an angle
shaped slot K¹ engaging with pins 31 fitted to the intermediate dies n, substantially
as described.
7. In machines for making folds in pasteboard the combination of links K
angular openings K and angle shaped slots K¹ therein, one leg of said angle shaped
slots being parallel with the axis of the bar and the other leg being perpendicular
thereto, substantially as described.
8. In machines for making folds in paste-board the combination of lower dies f,
pins g¹ fitted thereto, loops G engaging therewith, said loops being provided with
symmetrical set offs G1 G2 G3 for the purpose of regulating the distance between
the die pairs, substantially, as described.
9 In machines for making folds in pasteboard the combination of lower dies f
loops G engaging therewith, slots G provided in said loops teeth 2, engaging there-
with and fitted to shafts 10 which are coupled together by means of levers A and 5
and connecting rods 4 to one of the shafts being fastened a hand lever 3 substan-
tially as described.
.
Dated this 15th da
1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.