Improved Method for Making Cardboard Boxes and the like, and Apparatus therefor.
Year: 1894

page_text: Date of Application, 20th June, 1894
Complete Specification Left, 14th Mar., 1895-Accepted, 11th May, 1895
PROVISIONAL SPECIFICATION.
Improved Method for Making Cardboard Boxes and the like,
and Apparatus therefor.
A communication by the. Firm of CARL DAVID & SON, of 4, Lajos-utcza,
Buda-Pesth, in the Kingdom of Hungary, Paper Box Manufacturers.
1, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors 6 Lord Street, Liverpool and 6, Bank Street,
Manchester both in the County of Lancaster and 323 High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention has for its object a process, and the apparatus necessary for
carrying out the same, for making boxes or cases of cardboard, leather, and the
like, by means of endless sheet metal clamp-strips employed in the machines.
The process consists of a suitably cut out cardboard box being bent and brought
together in a suitable pressing device, whilst the four endless clamp-strips, coiled
on rollers, are bent at an angle in a longitudinal direction by means of a feed
apparatus, and placed in front of the corners of the box. As soon then as the
press stamp has formed the box to its full depth, four hammers operated by springs
which have temporarily been drawn back, spring forward. These hammers have
faces formed to suit the edges of the box. They cut, by means of their sharp
edges, the clamp strips into suitable lengths, and drive the points of the teeth of
the same simultaneously into the box, so that the corners are firmly fastened. The
finished box is afterwards pressed out of the mould by a further forward movement
of the stamp, and is removed or carried away by means of suitable transporting or
conveying apparatus.
The apparatus consists of a bed plate over which a table plate is situated, resting
on side walls. In this table plate, as well as in two crosspieces, two bars are
arranged which carry above them a crosshead provided with a press stamp and
below a crosspiece with a pressure roller. The whole movable arrangement is
supported by means of two springs which on the one hand bear against the cross-
pieces and on the other hand against rings or stops and when no outside force acts
on the movable arrangement it is maintained in its uppermost position. A slot is
made in the table plate, which slot corresponds to the outer form of the box which
is to be made and is closed below by means of a hinged bottom piece and held by
means of a spring. The movement of the stamp takes place from a shaft which
is journalled on the bed plate and carries à cam disc against which the pressure
roller mentioned above bears. The peculiar shape of this cam disc produces such a
movement that, when the press stamp fills the mould, a short stoppage in the
vertical movement takes place, so that during this time the hammers may come
into action. These hammers, which are connected with one another in pairs by
means of springs, oscillate on their lower end which is socketted in the bed plate,
and carry at the height of the shaft pressure rollers, with which, being driven by
the springs, they press against cam discs which are also mounted on the shaft.
The elbow shaped faces of these hammers come in contact, on their further
movement inwards, with the corners of the box and are made with a sharp edge on
their lower edges so that they act like a hinge with the plates which rest on the
corners of the moulds and have recesses shaped to correspond with the shape of the

page_text: clamps, and the clamp strips which project through the slot are cut off on their
springing forward. The cams of the discs have such a position one to the other
and to the eccentric disc that the springing forward of the hammers takes place
simultaneously at the moment when the desired stoppage in the descent of the
stamp has taken place.
The feed of the clamp strips takes place by means of a fixed roller, and a
movable roller pressed against the former by means of a spring; the latter roller
being of such a shape that the band-like clamp strip conveyed between them is
projected from between them hent at an angle and ready for fastening. The fixed
ruller is connected with a ratchet wheel in such a way that by means of a pawl
only a rotation in one direction is possible, that is to say, the movement of the
clamp strip upwards is possible and the backward movement of the strips is thus
prevented. A second pawl, which also engages in the aforementioned ratchet
wheel but is attached to a spiral spring and thus on the descent of the shaping
stamp makes a downward movement together with spiral spring, causes a pushing
forward of the strip. Thus at each descent of the stamp such a piece of the clamp
strip is hent and raised over the edge of the plate as is necessary for forming the
box corners.
It is of course evident that a special feed device is provided for each
of the hammers, that is to say, for each corner of the box. A feed channel for the
cut out shaped pieces of the boxes and a similar channel for carrying off the
finished boxes or cases which are ejected from below out of the mould, serve for
supplying the material as well as carrying off the finished articles.
Dat this 10th day of Inna 180.1
Improved Method for Making Cardboard Boxes and the uke.
and Apparatus therefor.
A communication by the Firm of CARL DAVID & Sox, of 4. Lajos-uteza,
Buda-Pesth, in the Kingdom of Hungary, Paper Box Manufacturers.
1, WILLIAM PHILLIPS THOursos, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors 6, Lord Street, Liverpool and 6 Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn in the County
of Middlesex, Civil Engineer, 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 has for its object a process, and the apparatus necessary for
carrying out the same, for making boxes or cases of cardboard, leather, and the
like, by means of endless sheet metal clamp-strips employed in the machines.
The process consists of a suitably cut out cardboard box being bent and brought
together in a suitable pressing device, whilst the four endless clamp-strips, coiled on.
rollers, are bent at an angle in a longitudinal direction by means of a feed
apparatus, and placed in front of the corners of the box. As soon then as the press
stamp has formed the box to its full depth, four hammers operated by springs which
have temporarily been drawn back, spring forward. These hammers have faces formed
to suit the edges of the box. They cut, by means of their shaep edges, the clamp
strips into suitable lengths, and drive the points of the teeth of the same
simultaneously into the box, so that the corners are firmly fastened. The finished
box is afterwards pressed out of the mould by a further forward movement of the
stamp, and is removed or carried away by means of suitable transporting or conveying
apparatus.

page_text: g.
The invention is shown in Figures 1-5 of the accompanying drawings :-
Figures and 5 are vertical sections at right angles to one another;
Figure 2 is a plan view and partial section of the whole apparatus ;
Figures 3 and 4 are separate views of the feed apparatus for the clamp strips.
The apparatus consists of a bed plate A over which a table plate C is situated,
resting on side walls B. In this table plate, as well as in two crosspieces B', two
bars are arranged which carry above them a crosshead E provided with a press
stamp D and below a crosspicce G with a pressure roller The whole movable
arrangement is supported by means of two springs which on the one hand bear
against the crosspieces B' and on the other hand against rings or stops and when
no outside force acts on the movable arrangement it is maintained in its uppermost
position. A slot C' is made in the table plate, which slot corresponds to the outer
form of the box which is to be made and is closed below by means of a bottom
piece a hinged at d and held by means of a spring b. For clearness sake a box e is
shown in this mould, having just been pressed into form, the stamp being now in its
ghest position. The movement of the stamp takes place from a shaft H which is
jennalled on the bed plate at hand carries a cam disc against which the
pressure roller bears. The peculiar shape of this cam disc produces such a
movement that," when the press stamp fills the mould, a short stoppage in the
vertical movement takes place, so that during this time the hammers L may come
into action. These hammers, which are connected with one another in pairs by
means of springs N oscillate on their lower end which is socketted in the bed
plate, and carry at the height of the shaft H pressure rollers M with which, being
driven by the springs, they press against cam discs K which are also mounted on
the shaft H. The elbow shaped faces L' of these hammers come in contact, on
their further movement inwards, with the corners of the box and are made with a
sharp edge on their lower edges so that they act like a hinge with the plates k
which rest on the corners of the moulds and have recesses i shaped to correspond
with the shape of the clamps, and the clamp strips which project through the slot i
are cut off on their springing forward. The cams of the discs have such a position
one to the other and to the eccentric disc that the springing forward of the
hammers takes place simultaneously at the moment when the desired stoppage in
the descent of the stamp D has taken place.
The feed of the clamp strips takes place by means of apparatus arranged at the
points and shown more particularly in Figures 3 and 4. They consist of a
fixed roller and a movable roller m pressed against the former by means of a
spring; the latter roller being of such a shape that the band-like clamp strip
conveyed between them is projected from between them bent at an angle and ready for
fastening. The fixed roller is connected with a ratchet wheel n in such a way
that by means of a pawl o only a rotation in one direction is possible, that is to
say, the movement of the clamp strip upwards is possible and the backward
movement of the strips is thus prevented. A second pawl p which also engages in
the aforementioned ratchet wheel n but is attached to a spiral spring and thus
on the descent of the shaping stamp D makes a downward movement together with
the spiral spring causes a pushing forward of the strip O. Thus at each descent
of the stamp such a piece of the clamp strip is bent and raised over the edge of the
plate as is necessary for forming the box corners. It is of course evident that a
special feed device is provided for each of the hammers, that is to say, for each
corner of the box. A feed channel Q for the cut out shaped pieces of the boxes
and a similar channel R for carrying off the finished boxes or cases which are
ejected from below out of the mould, serve for supplying the material as well as
carrying off the finished articles.
Having now particularly described and ascertained the nature of the said inven-
tion 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. An improved method of producing cases or boxes of card-board and like

page_text: material, by means of endless clamp-strips, consisting in the already cut out box
material being bent in a forming press, and then fitted on all the four corners
simultaneously with sheet-metal clamp-strips by means of hammers operated by
cams, in which method the haminers working simultaneously with a cutting edge
against a suitable part of the mould, cut off the necessary pieces from the endless
strips, and also wherein for each hammer a feed device is operated by pawls from
the moving parts of the machine, whereby the clamp strips are bent longitudinally
to an angle by means of suitably shaping their feed rollers.
2. An apparatus for carrying out the method described in Claim 1, consisting of
a pressing frame with a mould closed by means of a hinged bottom, a forming
stamp operated from a driving shaft by means of a cam disc and springs for bending
together the parts of the box, and ejecting the finished boxes, as well as a number
of haminers, corresponding to the number of the corners of the box, operated by
means of cam discs and springs seated on the same driving shaft, the heads of these
hammers which correspond to the form of the box corners, being so sharpened
underneath like shears ns to net in combination with the lower part of the mould, to
cut off in suitable lengths the endless clamp strips on the moving forward of the
Intter, which have been previously bent by a feed device and pushed forward, and
to press them on the corners of the box, and finally of as many feed devices as
there are hammers, each of which feed devices consists of a fixed pressure roller,
nud of a movably arranged pressure roller, moving against the former, pressed on
to the same by means of springs, these pressure rollers being of such a shape that
the clamp strips conveyed between them are bent at an angle in a longitudinal
direction, whilst they are driven by means of a ratchet wheel seated on the shaft
of the fixed pressure roller, and further of a fixed pawl engaging in this ratchet
wheel and loose pawls fixed on the parts which are moved, all substantially as
described and illustrated.
Dated this 13th day of March 1805
WM. P. THOMPSON & Co.,
Agents.