A Machine for Making Pasteboard Box Blanks.
Year: 1898

page_text: A Machine for Making Pasteboard Box Blanks.
I, JOHANN BINDER, of 15, Redtenbacher-Strasse, Vienna XVI., in the Empire of
Austria, Mechanical Engineer, do hereby declare the nature of this invention to be
as follows:
This invention relates to mechanical means for stamping two pairs of parallel
grooves in cross directions in square pasteboard sheets and for punching out the slots
running from the four intersections of the grooves to the edges of the sheet so as to
admit of the four sides of the box being fitted.
The invention has mainly for its object to provide grooving dies which permit two
parallel grooves to be simultaneously stamped in the pasteboard without exerting a
strain upon that portion of the material between the two grooves. Furthermore, the
invention has for its object to so construct a machine, fitted with the improved
grooving dies, that pasteboard sheets successively fed into one end of the machine
leave the other end in the shape of grooved and slotted box blanks.
According to the invention, the grooving dies, which, as usual, consist of a bottom
die having a longitudinal rib and of an upper die having two movable cheeks, are so
constructed that in a pair of grooving tools required for simultaneously stamping two
parallel grooves in the pasteboard, the inner cheeks of both upper dies first force
downward the pasteboard resting upon the ribs of the two under dies, the outer
cheeks of the upper dies not operating until later. Owing to this construction and
.consequent operation of the grooving tools, the inner cheeks of the upper dies are
enabled to draw the material required for forming the grooves from the outer sides
of the ribs of the bottom dies, across the said ribs.
In order to effect this operation the inner cheeks are so suspended from their
carriers or die bodies that they can move vertically in their seats to a certain extent,
springs being provided for keeping them in their lowermost position, when they are
not pressed on to the paste board introduced between the upper and bottom dies.
The outer cheeks are hinged to the carriers and have their ends provided with
downwardly extending projections, to which inclined surfaces formed in recesses or
the like in the bottom die near both ends of the rib of the said die, correspond.. A
spring keeps the cheeks of the upper die apart when the said die is not operating.
Before the upper dies are lowered, their inner cheeks extend farther downwards
than the outer cheeks so that, on the dies being lowered, they first act on the paste-
board; then, while the pressure on the upper dies continues, the springs acting on
the inner cheeks yield, and the cheek carriers with the hinged outer cheeks descend.
Under the action of their projections sliding along the inclines, the outer cheeks,
having forced downward the pasteboard, swing toward the ribs of the bottom dies.
The wedge-shaped inner cheeks at the same time enter their seats in the carriers and
are thereby equally pressed against the ribs of the bottom dies.
In the machine, a frame-shaped carriage is intermittently reciprocated upon a
work-table, over which three frames, carrying longitudinal upper dies, transverse
upper dies and male punches, respectively, are arranged; these frames being

page_text: provided with suitable mechanism, whereby they are kept raised, while the carriage
is moving, and lowered and subsequently raised when the carriage is at rest.
The said frame-shaped carriage is provided with downwardly projecting spring
toggles adapted to feed a sheet of pasteboard placed upon the rear end of the
work-table, upon which spring stops for the said sheet are arranged. In its
operation, the said carriage first moves forward beyond the place where the sheet
of pasteboard is to be operated upon, and afterwards a given distance backwards,
when the said sheet, for which guides are provided on the carriage, is stopped
by the spring stops in the requisite position.
Upon the work-table there are arranged at three successive points longitudinal
bottom dies, transverse bottom dies and female punches.
As, when making narrow boxes, it is necessary to cut off a portion of the flaps
outside the punched slots, provision is made for securing suitable knives to the
frame carrying the male punches, and in order to allow these knives to pass by
the female punches, these latter are composed of two relatively adjustable parts.
Dated the 2nd day of September 1898.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant,
I, JOHANN BINDER, of 15, Redtenbacher-Strasse, Vienna XVI., in the Empire of
Austria, Mechanical Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement :-
My invention relates to mechanical means for stamping two pairs of parallel
grooves in cross directions in square pasteboard sheets, and for punching out the
slots running from the four intersections of the grooves to the edges of the sheet
so as to admit of the four sides of the box being fitted.
The invention has mainly for its object to provide grooving dies which permit two
parallel grooves to be simultaneously stamped in the pasteboard without exerting a
strain upon that portion of the material between the two grooves. Furthermore,
the invention has for its object to so construct a machine, fitted with the improved
grooving dies, that pasteboard sheets successively fed into one end of the machine
leave the other end in the shape of grooved and slotted box blanks.
According to my invention, the grooving dies, which, as usual, consist of a bottom
die having a longitudinal rib and an upper die having two movable cheeks, are so
constructed that in a pair of grooving tools required for simultaneously stamping
two parallel grooves in the pasteboard the inner cheeks of both upper dies first force
downward the pasteboard resting upon the ribs of the two under dies, the outer
cheeks of the upper dies not operating until later. Owing to this construction and
consequent operation of the grooving tools, the inner cheeks of the upper dies are
enabled to draw the material required for forming the grooves from the outer sides
of the ribs of the bottom dies across the said ribs.
In order to effect this operation, the inner cheeks are so suspended from their
carriers or die bodies that they can move vertically in their seats to a certain
extent, springs being provide for keeping them in their lowerinost position, when

page_text: they are not pressed on to the pasteboard introduced between the upper and bottom.
dies. The outer cheeks are hinged to the carriers and have their ends provided with
downwardly extending projections, to which inclined surfaces formed in recesses in
the bottom die, near both ends of the said die, correspond. A spring keeps the
cheeks of the upper die apart when the said die is not operating.
Before the upper dies are lowered, their inner cheeks extend farther downwards
than the outer cheeks so that, on the dies being lowered, they first act on the paste-
board; then, while the pressure on the upper dies continues, the springs acting on.
the inner cheeks yield, and the cheek carriers with the hinged outer cheeks descend..
Under the action of their projections sliding along the inclines, the outer cheeks
having forced downward the pasteboard, swing toward the ribs of the bottom dies..
The wedge-shaped inner cheeks, at the same time enter their seats in the carriers
and are thereby equally pressed against the ribs of the bottom dies.
In the machine, a frame-shaped carriage is intermittently reciprocated upon a
work-table, over which three frames, carrying transverse upper dies, longitudinal
upper dies and male punches, respectively, are arranged; these frames being pro-
vided with suitable mechanism, whereby they are kept raised while the carriage is
moving, and lowered and subsequently raised while the carriage is at rest.
The said frame-shaped carriage is provided with guideways for the lateral edges of
the sheets of pasteboard and with downwardly projecting spring grips adapted to
feed a sheet of pasteboard placed upon the rear end of the work-table, upon which
spring stops for the said sheet are arranged. In its operation, the said carriage
first moves beyond the place where the sheet of pasteboard is to be operated upon,
and afterwards a given distance backwards, when the said sheet is stopped by the.
spring stops in the requisite position.
Upon the work-table, there are arranged, at three successive points, transverse
bottom dies, longitudinal bottom dies and female punches.
As, when making narrow boxes, it is necessary to cut off a portion of the flaps
outside the punched slots, provision is made for securing suitable knives to the frame
carrying the male punches, and in order to allow these knives to pass by the female.
punches, these latter are composed of two relatively adjustable parts.
In order to enable my invention to be fully understood I will describe the same in
detail with reference to the accompanying five sheets of drawings, in which:-
Figure 1 is the left-hand half and Figure 2 the right-hand half of a side elevation
of my improved machine for making pasteboard box blanks, the frames carrying the
upper dies and male punches being shewn in section.
Figures 3 and 4 are the left-hand half and right-hand half, respectively, of a.
sectional side elevation of the work-table of the machine:
Figures 5 and 6 are the left-hand half and right-hand half, respectively, of a top.
view of the machine, one half part of the frames carrying the upper dies and male
punches being broken away in order to show the nnderlying parts:
Figure 7 is a sectional end elevation of the machine on line 7-7 Figure 6:
Figures 8, 9 and 10 are sectional side elevations, on a larger scale, of the grooving.
tool in three successive positions :
Figures 11 and 12 are a side elevation and cross section, respectively, of one end
of a bottom die :
Figures 13 and 14 are an edge view and top view, respectively, of a pasteboard
box blank made by my machine.
Referring to Figures 1, 2, 3, 4, 5 and 6 of the drawings, the work-table mentioned
above is formed of the two lateral franes A, A, the cross-bars a, a, a connecting.
them, the stay rods a³, a³ and the base plate A¹.
For operating the carriers of the upper dies and the male punches, and the feeding
carriage in the described way the following mechanism is provided.
The driving shaft B carrying the belt pulleys b, b, transmits movement by means
of the pinion to the three toothed wheels c, d, e, which mesh with one another, are
of equal diameter and are keyed to the shafts C, D and E respectively, which operate

page_text: the tool carriers. The said tool carriers F, G and H are in the form of frames
extending across the work-table, and having their lateral ends adjustably connected
with slides f, f, g, g, h, h, respectively, for which suitable guide ways are formed on
the outer faces of the frames A, A. By means of the cains c¹, 1, el secured to the
ends of the shafts C, D, E, respectively, the said slides are raised and kept in a raised
position during a certain time, after which they are lowered by the cams c², d², e²,
respectively, with which both ends of the said shafts are supplied. The weights¸³, d³
and e³, secured to the toothed wheels c, d and e, respectively, counterbalance the tool
carriers F, G, H, and the slides f, g, h.
The reciprocating frame, the function of which is to feed. the pasteboard sheets,
while the tool carriers F, G, H are raised, from the projecting bars J, J to the.
working place I, below the tool carrier F, or thence to the working place II,
below the tool carrier F, or again from the working place II to the working
place III, below the tool carrier H, and finally out from the machine, con-
sists of two longitudinal bars K, K, suitably guided in chairs K₁ and connected with
each other by a number of cross-bars k, k, k, k. To the said cross-bars are adjustably.
secured, by means of screws passing through slots 2, the longitudinal bars k¹, in the
inner sides of which are formed the guide-grooves (see Figure 7) for the lateral edges
of the pasteboard sheets, and which carry the spring grips . When the feed-
carriage K, K, h, k, k, k is in its rearmost position, shown in dotted lines in Figure 5,
the hindinost ones of the spring grips et are situated behind the rear edge of the sheet
of pasteboard n likewise shown in dotted lines and having its front portion introduced
into the guide grooves ³. The operator laying the pasteboard sheets upon the bars J, J
and introducing the front end of each sheet into the guide grooves ³,³, causes the
rear edge of the sheet to abut against the adjustable angle-iron stops j, j.
A
At the following forward movement of the feed carriage, the rear edge of the,
pasteboard sheet is carried beyond the spring stops, which are secured to the
flat sheet supporting bars J, J, these latter being adjustably connected with the cross-
bar of the machine-frame, adapted to be shifted forward and rearward.
subsequent short backward movement of the feed carriage causes the rear edge of the
paste board-sheet to abut against the stops 40, the position of which corresponds to
that in which the pasteboard sheet is to be operated upon.
When the machine is run rapidly, the pasteboard sheet may, when the movement
of the feed carriage is reversed, slide farther forward under the action of its vis viva.
In order to prevent this, the longitudinal flat bars k, k, which are adjustably secured
edgewise by means of chairs to the cross-bars a and a¹ of the machine-frame, have
pivoted to them stops held in an upright position by springs. To the said
longitudinal bars are also adjustably secured the spring stops corresponding to
the working places II and III.
It has been herein before stated that the feed carriage first moves backwards in
order to seize the pasteboard sheet with the spring grips *, afterwards sufficiently
forward to carry the rear edge of the pasteboard sheet beyond the spring stops ko,
and finally backward again to such an extent as to cause the rear end of the pasteboard
sheet to abut against the said stops.
In order to impart the described movements to the feed carriage, the latter is
connected by a link. to a lever L pivoted to the machine frame and connected, by
means of another link or connecting rod 1, with the arm 12 of an angular lever. The
other arm of this angular lever consists of a fork the branches and 14 of which are
located in different planes and carry at their ends antifriction rollers 17, which bear
against the cams 15 and 16, respectively. The cams 15 and are keyed to the shaft C.
The cam, by means of the portion of its circumference concentric to the axis, keeps
the feed carriage in an advanced position, while the tools are working; this stage of
the operation is illustrated in Figure 2. The cam moves the feed carriage backward
to receive a new sheet of pasteboard, and keeps it a short time in the withdrawn
position, whereupon the cam commences to effect the advance. As soon as the
forward movement is at an end the short concentric portion 18 of the circumference of

page_text: the cam produces a short rearward movement of the feed carriage for the purpose
already explained.
The bottom dies m of the grooving tools, which are provided with a longitudinal
rib m', triangular in cross-section, are adjustably connected with the work table, in
transverse positions at the working place I, and in longitudinal positions at the
working place II. As clearly visible in Figures 11 and 12, steel prisms m² of dovetail
section are, at both ends of the said rib m³, inserted into correspondingly shaped
grooves in the bottom dies. The said prisms are provided with trough-shaped
depressions, upon the inclined sides of which projections on the hinged cheeks of the
upper dies slide on these dies being lowered, thereby pressing the said cheeks onto
the rib ml of the bottom die.
In the same manner as the bottom dies are adjustably seated upon the work-table,
the upper dies are seated in corresponding positions in the frame-shaped
carriers F and G. The said upper dies consist of a bar-shaped casing m³ and the two
cheeks m and m³ movable therein. The cheeks m facing each other in a pair of
co-acting dies, i.c. placed at the inner sides of the two dies, are upwardly tapering or,
wedge-shaped, and by screws, passing through slots in the cheeks, they are suspended
in suitable recesses in the casing m³, wherein they are vertically movable. Three
projections mo, Figure 1 on the top edge of each cheek m* extend to the outside
through slots in the top side of the casing m³ and bear against strong flat springs m³.
secured to the top face of the casing.
The outer cheeks m³ of the upper dies have their top edge formed into a cylindrical
bead ms inserted in a correspondingly shaped groove in the botto:n side of the
casing m³. Both ends of the bead ms carry trunnions m³ for which bearings are
formed in the brackets m10 screwed to the casing m³. Both ends of the lower edge
of the cheek m are provided with downwardly extending projections mll corresponding
to the trough-shaped depressions in the steel prisms m².
When the dies are not operating, their cheeks m' and m are held apart by a
spring m2, and the sliding cheek m is forced downward by the springs m so that it
reaches further down than the hinged cheek
³.
When both upper dies, designed to act simultaneously upon the sheet of paste-
board n, are lowered, the cheeks m touch the pasteboard first, as illustrated by:
Figure 8, between the ribs m¹ of the two bottom dies. While the lowering of the
upper dies proceeds further, as shown by Figure 9, the portion of the pasteboard
sbeet n, comprised between the two ribs m¹ of the bottom dies is pressed down by
the cheeks m between the said ribs before the outer cheeks m³ of the upper dies begin
to operate; facility is thereby afforded for the inner cheeks to draw the pasteboard
inward across the ribs m².
Figure 10 illustrates how during the last stage of the lowering of the upper dies,
the cheek m overcomes the pressure of the plate springs m' which are raised, and
the cheek m is, in consequence of its inclined outer surface sliding over the lower
edge of the casing m³ pressed onto the rib ¹ of the lower die m.
At the same
time, the projecting heels at both ends of the cheek m³ slide upon the inclines
of the trough-shaped depressions in the steel prisms m², whereby the said cheek is
Swung towards the rib m¹.
In this way, transverse grooves n¹ are stamped in the sheet of pasteboard at the
working place I and longitudinal grooves n² at the working place II.
For cutting out the recesses n³, female punches are, at the working place III,
adjustably secured to the machine frame, and corresponding male punches are fixed to
the tool carrier H. In order to allow of combining the said punches with a knife
designed to cut off a portion of the flaps n', the female punches are compo-ed of two
relatively adjustable parts o and o¹. As clearly shown in Figures 6 and 7, both parts
are yoke-shaped and adjustably secured, by means of screws o², to slotted longitudinal
bars o, o³, which are adjustably connected with the cross-bars a¹ and a of the machine
frame.
The male punches of the lower edges of which are oblique, so that they gradually

page_text: sever the strip of material to be removed are secured, as clearly shown in Figures 2
and 7, to longitudinal bridges 05, which are so suspended from the tool carrier H as to.
be laterally adjustable, and which are provided with a series of holes, admitting of the
longitudinal adjustment of the punches o. The yoke-shaped parts of carrying the
punches of are fastened to the bridges 5 by means of screws 07. In order to allow of
the knifes os for cutting off the flaps n being fastened in the requisite position,
bridges o similar to the bridges o are arranged by the side of these latter, and to the
said bridges the yokes o¹0 carrying the knives 08 are adjustably secured by means of
binding screws 07.
When the knives are to be used, the female punches must be adjusted as shown.
for the right hand one in Figure 6.
It will be seen by reference to Figures 3 and 5 that, at the working place I the
grooved guide-bars are cut away at the points p and p¹ to allow of the passage of
the upper dies. In order to ensure the pasteboard sheet being brought upon the
second bottom die notwithstanding these gaps an inclined sheet metal flap p² is riveted
to the said die.
The brake-block q, which is fitted with leather and pressed on to the feed
carriage by the plate spring q¹, secured to a guide-chair K¹, absorbs the vis viva
of the carriage, and the stop screws r, r, shewn in Figures 4 and 6, limit its
stroke.
The free space at the front end of the machine frame is intended to be utilized
for mounting a printing press, by means of which required inscriptions can be printed
upon the box blanks.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :--
1. In a tool for grooving pasteboard, the combination with a bottom die having
a rib and trough-shaped depressions at both ends of the rib, of an upper die body
or casing, a cheek vertically movable in the said casing, a spring bearing against
the top of the vertically movable cheek, a cheek hinged to the casing and having
at both ends of its lower edge projections adapted to enter the said trough-shaped
depressions in the bottom die, and a spring so arranged between the two cheeks
as to keep them apart, the vertically movable cheek extending farther downward
than the hinged one, when the tool is not operating, substantially as, and for the
purpose, described.
2. In a machine for making pasteboard box blanks, the combination with a work-
table of a frame-shaped carriage adapted to be reciprocated endwise upon the said
work-table, internally grooved longitudinal bars secured to the underside of the said
frame-shaped carriage, series of transverse spring grips arranged upon the underside of
the carriage between the said longitudinal grooved bars, and corresponding spring
stops secured to the work-table, substantially as, and for the purpose described.
3. In a machine for making pasteboard box blanks, the combination with a work-
table of a frame-shaped carriage adapted to be reciprocated end-wise upon the said
work-table, internally grooved longitudinal bars secured to the underside of the said
frame-shaped carriage, series of transverse spring grips arranged upon the under-
side of the carriage between the said longitudinal grooved bars, corresponding spring
stops secured to the work-table and suitable mechanism for so moving the said
carriage that it first makes a back stroke of given throw, secondly a front stroke of
longer throw, thirdly a back stroke bringing it into its original position and
fourthly remains stationary a given time, substantially as, and for the purpose,
described.
4. In a machine for making pasteboard box blanks, the combination with a pair
of transversely arranged bottom grooving dies, a pair of longitudinally arranged
bottom grooving dies, and two pairs of longitudinally arranged female punches,
secured serialim to a work table, of corresponding upper grooving dies and

page_text: male punches, adapted to be lowered and raised, and suitable mechanism for
carrying sheets of pasteboard, step by step, between the three groups of co-acting
tools, substantially as, and for the purpose, set forth.
Dated the 21st day of Nov 1800
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.