Improvements in Apparatus for Manufacturing Pasteboard and similar Boxes.
Year: 1890

page_text: Date of Application, 21st July, 1890
Complete Specification Left, 7th Aug., 1890-Accepted, 14th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Manufacturing Pasteboard and
similar Boxes.
A communication from EMIL SALTZKORN, Consul, and LUDWIG NICOLAI,
Manufacturer, both of 21, Lobtauerstrasse, Dresden, in the Empire of
Germany.
I, ALFRED JULIUS BOULT, of 323, High Holborn, in the County of Middlesex,
M.1.M.E., do hereby declare the nature of this invention to be as follows
The object of the apparatus improved according to this invention is to manu-
facture boxes of cardboard by machinery and thereby to avoid the loss of time and
uncleanliness attending the folding of the cardboard, the binding and sizing of the
corners and the lining the box with paper or a suitable fabric. The piece of
cardboard cut to the desired shape is placed upon four adjustable angle pieces in
For the
such a manner that when the box is formed it can slide between them.
purpose of adjusting the angle pieces according to the different sizes of cases or
boxes it is desired to manufacture the holders of the said angle pieces are movable
in their guides and provided with suitable means for securing them in the desired
position. Of the four guide pieces provided for this purpose two are attached to
adjustable uprights which enables square or long boxes to be formed at will. The
cardboard blank cut to the desired shape and lying upon the said angle pieces is
intended at a given moment to be driven through these angle pieces by a plunger
when the sides forming the walls of the box will close or turn up. The plunger
is provided with a frame of the same size as the bottom of the box it is desired
to obtain. This frame is intended to grasp the piece of cardboard which is to
form the bottom of the box at a point situated near the partial cut at the
junction of the bottom and the side walls and thus facilitates the action of the
plunger upon the box. On this frame preparatory to its being used in the manner
just described strips of paper or of a suitable fabric sized with size or glue are
wound preferably by machinery and in such a manner that the side having the
size upon it is turned outwardly. When the piece of cardboard which is to form
the box is forced through the angle pieces its sides adhere to these sized or
gummed strips. A number of carrier springs arranged below the table or platform
of the machine are adapted to be turned down as the box is forced through the
angle pieces but lean against the plunger frame above the box with the result
that the box is slipped over the frame during the upward stroke of the plunger.
The following provision is made for mechanically winding the sized or gummed
paper strips round the frame:-The plunger before commencing its downward
stroke causes the frame attached to its end to turn owing to the pressure lever
acting upon it and then after getting automatically out of engagement descends in
a straight line.
The frame is fixed to a screw nut sliding upon a spindle and carrying a disc at
the top. A number of grippers are pivoted to the plunger cylinder in such a
imanner that their angular pieces project over the opening of the cylinder but do
not reach the said extension of the plunger. When the plunger is at rest these
grippers grasp the edge of the disc of the screw-nut and thus retain the same in
the desired position in the frame. But when the plunger is pressed down by the
lever the said grippers secure the disc at first but at the same time allow of the
retention of the screw nut with the frame owing to the pressure sustained by
the spindle formed at the end of the plunger. The gummed or sized paper strip,
having been introduced into the slit of the frame beforehand and being retained
therein is now wound once round the frame the screw nut being provided with a

page_text: ::
complete screw thread and is then cut off. At that moment the thicker portion of
the plunger has issued from the cylinder and exerts its pressure upon the pro-
jecting angles of the grippers with the result that these grippers yield to the
pressure laterally and release the disc whereupon the screw nut together with the
frame and plunger descend in a straight line and effect the movement described
of the box through the angle
above for the purpose of pushing the blank
pieces. As the plunger rises and at the moment when the thicker portion of the
same re-enters the cylinders the said grippers are carried down by their own
weight into their vertical position when the disc of the screw nut again abuts
against them. The screw mit is thereby caused to unscrew from the spindle again
while at the same time the resistance encountered at the end is overcome and the
grippers are made once more to grasp the disc.
In the other modification the rotary movement is provided for by forming in
the round plunger a groove part of which is rectilinear while the remaining part
forms a screw thread. In this groove a roller attached to the cylinder is adapted
to run. The plunger is supported by its rod in a ball bearing. The box
frame is attached to the end of the plunger and the disc also fixed to the plunger
end is grasped by the grippers. The plunger as it performs its downward stroke
is thus by the fast roller aforesaid running in the spiral groove caused to rotate
together with the frame until the thicker portion of the plunger releases the said
grippers when the plunger still guided by the said roller enters the straight groove
and consequently resumes its straight direction. The operation is reversed during
the upward stroke of the plunger.
At
On the table or platform four uprights support a superstructure or frame head
in which the plunger cylinder is hung in such a manner as to be adjustable and
and at the same time capable of being retained in the desired position. Between
the uprights two additional uprights are arranged which are adjustable and may
also be fixed in position at will. These additional uprights in conjunction with the
other two uprights carry angle pieces guided within arms by means of dovetailed
grooves and adapted to be fixed in position by means of adjusting screws.
right angles to the angle pieces are provided guides reaching down to an opening
Below the latter a number of springs are
formed in the table or platform.
arranged so as to project into an open space and adapted to slip the cardboard
box when ready over the frame. A plunger is caused to move in a cylinder by a
lever by means of a link. At the end of the plunger there is an extension of a
smaller diameter which in its turn is joined by a spindle carrying a screw nut with
a frame. A disc is adapted to be grasped by grippers pivoted to the cylinder
the projecting portions of which grippers extend over the opening of the cylinder
The link is attached to a ball whereby it is connected to the cylindrical plunge
in which is formed a groove, a portion of which is straight while the remaining
portion assumes the shape of a screw thread and a roller is adapted to move withi
this groove. The disc rests at the projecting portion of the plunger carrying
the frame at its end. In the frame an inwardly directed slit is provided. Th
gummed or sized paper strip is inserted into this slit either by hand or by
inachinery and then held fast and as the frame turns the required portion of it i
cut off also by hand or machinery as soon as it has been once wound about th
frame. The slit is open at its lower part so as to enable the paper strip to dro
out of the frame at the same time as the box is removed therefrom.
T1900

page_text: Improvements in Apparatus for Manufacturing Pasteboard and
similar Boxes.
A communication from EMIL SALTZKORN, Consul, and LUDWIG NICOLAI,
Manufacturer, both of 21, Lobtauerstrasse, Dresden, in the Empire of Germany.
1, ALFRED JULIUS BOULT, of 323, High Holborn, in the County of Middlesex,
M.I.M.E., 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 the apparatus improved according to this invention is to manufac-
ture boxes of cardboard by machinery and thereby to avoid the loss of time and
uncleanliness attending the folding of the cardboard, the binding and sizing of the
corners and the lining the box with paper or a suitable fabric.
In the accompanying drawings Figure 1 is a side view partly in vertical section
of the complete arrangement, Figure 2 is a longitudinal section of the plunger and
screw nut and Figures 3 and 4 are longitudinal sections of the cylindrical plunger
provided with a groove and roller. Figure 5 is a plan of the machine and Figure 6
shows the cardboard blank lying on the angle pieces.
C
b
are
On the table or platform a four uprights support a superstructure or frame-
head in which the plunger cylinder is hung in such a manner as to be adjustable
and at the same time capable of being retained in the desired position. Between
the uprights two additional uprights are arranged which are adjustable and may
also be fixed in position at will. These uprights 6' in conjunction with two of the
uprights carry the angle pieces d guided within the arms e by means of dove-tailed
grooves and adapted to be fixed in position by means of adjusting screws. At right
angles to the angle pieces are provided the guides reaching down to the opening y
formed in the table or platform. Below the latter a number of springs
arranged so as to project into the open space and adapted to slip the cardboard
box when ready over the frame. The plunger k is caused to move in the cylinder /
by the lever m by means of a link ». At the end of the plunger there is an exten-
sion of a smaller diameter which in its turn is joined by a spindle carrying the
screw nut with the frame. The disc is adapted to be grasped by the
grippers & pivoted to the cylinder the projecting portions of which grippers
extend over the opening of the cylinder. In the arrangement Figs. 3 and 4 the
link is attached to a ball i whereby it is connected to the cylindrical plunger
in which is formed a groove a portion of which is straight while the remain-
ing portion assumes the shape of a screw thread and a roller is adapted to
move within this groove. The disc prests at the projecting portion of the
plunger carrying the frame at its end. In the frame ran inwardly directed
slit is provided. The gunmed or sized paper strip is inserted into this slit
either by hand or by machinery and then held fast and as the frame turns the
required portion of it is cut off also by hand or machinery as soon as it has been
once wound about the frame. The slit is open at its lower part so as to enable
the paper strip to drop out of the frame at the same time as the box is removed
therefrom.
The piece of cardboard cut to the desired shape is placed upon the four adjust-
able angle pieces d in such a manner that when the box is formed it can slide
between them. For the purpose of adjusting these angle pieces according to the
different sizes of cases or boxes it is desired to manufacture, the holders of the said
angle pieces are movable in their guides e, Figs. 1 and 5 and provided with suitable
means for securing them in the desired position. Of the four guide pieces e
provided for this purpose two are attached to the adjustable uprights which
enables square or oblong boxes to be formed at will. The cardboard blank cut
to the desired shape and lying upon the said angle pieces d is intended at a

page_text: given moment to be driven through these angle pieces d by the plunger k when
the sides forming the walls of the box will close or turn up. The plunger k is pro-
vided with a frame Figs. 1, 2 and 4 of the same size as the bottom of the box it
is desired to obtain.
j
As the plunger descends, this frame exerts pressure upon the cardboard blank,
previously cut into shape, and lying upon the angle-pieces (Fig. 6). This
pressure forces in the said blank between and through the angle-pieces, until it is
brought down upon the guides (Fig. 1), in which operation the side flaps 2, 3, 4
and Fig. 6 are folded upwardly, e, at right angles to the bottom-piece 1. This
raising, or turning up, of the sides is moreover assisted by the partial cut, made by
a scoring-knife, or the like, along the lines of separation between the said bottom-
piece and the side-flaps. On this frame preparatory to its being used in the
manner just described strips of paper or of a suitable fabric sized with size or glue are
wound preferably by machinery and in such a manner that the side having the sides
upon it is turned outwardly. When the piece of cardboard which is to form the
box is forced through the angle pieces its sides adhere to these sized or gummed
strips, and the springs Fig. arranged below the table or platform of the
machine are adapted to be turned down as the box is forced through the slot but
lean against the plunger frame above the box with the result that the box is
slipped over the frame during the upward stroke of the plunger.
"
The following provision is made for mechanically winding the sized or gummed
paper strips round the frame:The plunger before commencing its downward
stroke causes the frame attached to its end to turn owing to the pressure lever m
acting upon it and then after its holders are brought automatically out of
engagement descends in a straight line. This automatic disengagement is effected
by the plunger striking the projecting angles (Fig. 1) of the grippers or
holders which hold the disc p³. The resulting pressure causes the grippers s to
part sideways, and thereby to release the disc ¹.
The rotation of the plunger k or frame is shown in two different modifications
in one of which the plunger Figs. 1 and 2 is provided with an extension of a
smaller diameter terminating in a screw o. The frame is fixed to a. screw nut p
A number of grippers s are
on the said screw and carries a disc at the top.
pivoted to the plunger cylinder in such a manner that their angular pieces
project over the opening of the cylinder but do not reach the said extension of the
plunger. When the plunger is at rest these grippers s grasp the edge of the disc pl
of the screw nut p and thus retain the same in the desired position in the frame r.
But when the plunger is pressed down by the lever m the disc and the screw-
mut บ secure the grippers s against vertical displacement while permitting of their
rotation. For this purpose the screw o of the portion k' of the piston is made to
work in the screw-mut p. Now as this screw is capable only of vertical motion,
whereas the screw-nut is prevented from moving vertically, it will be understood
that the combined effect produced by the screw-threads of both the screw and the
nut will be to rotate the latter. The gummed or sized paper strip, having been
introduced into the slit of the frame beforehand and being retained therein is
now wound once round the frame the screw nut being provided with a complete
screw thread and is then cut off. At that moment the thicker portion of the
plunger has issued from the cylinder i and exerts its pressure upon the projecting
angles of the grippers & Fig. 2 with the result that these grippers yield to the
pressure laterally and release the disc whereupon the screw nut together with
the frame and plunger & descend in a straight line and effect the movement des-
cribed above for the purpose of pushing the "blank" of the box through the angle
pieces. As the plunger rises and at the moment when the thicker portion of the
same re-enters the cylinder the said grippers are carried down by their own
weight into their vertical position when the disc of the screw nut again abuts
against them as in Fig. 1. The screw-nt p is thereby caused to unscrew from the
screw-spindle o, and while it does so its end comes into contact with the bevelled
surfaces of the grippers s which, through the medium of the disc pit forces out
}
"

page_text: of the way, until the recesses again engage the edge of the disc p¹ and retain it,
and also the screw-mut and the framer, in position.
"
1
In the other modification Figs. 3 and 4 the rotary movement is provided for by
forming in the round plunger a groove a part of which is rectilinear while the
remaining part forms a screw thread. In this groove a roller attached to the
cylinder is adapted to run. The plunger is supported by its rol n in a ball
bearing. The box-frame is attached to the end of the plunger and the disc p¹
also fixed to the plunger end is grasped by the grippers. The plunger as
it performs its downward stroke is thus by the fast roller e aforesaid running in
the spiral groove caused to rotate together with the frame until the thicker
portion of the plunger releases the said grippers when the plunger still
guided by the said roller enters the straight groove a and consequently resumes
its straight direction. The operation is reversed during the upward stroke of
the plunger.
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 correspondent, I declare that what I claim is
--
1. Apparatus for the manufacture of cardboard or pasteboard boxes operated
in such a manner that by pressing down a plunger such as ka frame attached
to the frame is caused to rotate and in so doing to have a gummed or sized
strip wound round it whereupon as the piston further descends the said frame
encounters the pasteboard blank and lying upon adjustable angle pieces or guides
such as d when the sides of the box which is being made are turned up so as
to come into contact with the said gummed or sized strip whereby the box is
completed and caused to pass between the guides and an open space pro-
vided in the table or platform; after which when the plunger performs its following
upward stroke the said box is caused by a gripper h to slip over the frame
substantially as herein described and illustrated in the accompanying drawings.
2. In the apparatus such as characterized in the preceding claim the arrangement
of two or four angle pieces such as d attached to adjustable uprights such as
enabling the length of the square box to be varied at will substantially as herein
described and illustrated in the accompanying drawings.
3. The combination and arrangement of parts constituting the complete apparatus
substantially as and for the purpose herein described and illustrated in the
accompanying drawings.
Dated this 7th day of August 1890.
W. P. THOMPSON & BOULT,
Agents for the Applicant.