A New Method of Making Boxes and Apparatus used therein.
Year: 1892

page_text: Date of Application, 17th Mar., 1892
Complete Specification Left, 2nd Dec., 1892-Accepted, 7th Jan., 1893
PROVISIONAL SPECIFICATION.
A New Method of Making Boxes and Apparatus used therein.
I, CARL SCHMIDT, trading under the firm of C. & R. Schmidt of Elberfeld
Germany Manufacturer of Paper Goods do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to a new manner in the manufacture of angular and oval
boxes and similar articles.
Angular boxes of card board and like articles have been made hitherto by using
a piece of board properly cut to shape and size, in which the lines which are to
form the bottom edges are then scored or little grooves cut along them and the sides
are then bent up and the edges pasted together by small strips of paper or they are
held together by little metal hooks.
By means of my invention it is possible to make such boxes, of oval or angular
form of any depth by drawing the blank into a matrice of corresponding shape by
means of a piston fitting therein.
Boxes so made are much stronger because there is no scoring or grooving which
weakens the material just in those places where it ought to be strongest ; the pasting
them together is obviated; they can therefore be made also much cheaper and in less
time because only one operation is required to make a complete box of the piece of
card board that has been cut to shape.
The invention is based on the use of peculiarly shaped matrices or moulds the
upper entrance-edges of which are so situated with regard to each other, that in
pressing the blank into the mould by the piston two opposite edges will first bend
up two sides of a box to be formed, then the parts of these sides forming the lap
joint for the other sides are bent round at right angle, being gradually pressed into
conical or pyramidal recesses and then against the respective sides of the piston
by the progressing down stroke of the piston, until this reaches the other
entrance edges of the matrice, when the two other sides of the box are bent up
and pressed against the said pieces forming the lap joint, which having been
provided with some gluing material cause the sides to stick to them and thus
close the box.
The mould may be heated by any suitable means as is usually in making other
articles of card board by machinery.
Dated this 10th day of February 1892.
C. & R. SCHMIDT,
Per Karl J. Mayer,
Agent.
COMPLETE SPECIFICATION.
A New Method of Making Boxes and Apparatus used therein.
I, CARL SCHMIDT trading under the firm of C. & R. Schmidt of Elberfeld,
Germany Manufacturer of Paper Goods 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 new manner in the manufacture of angular and oval
boxes and similar articles. ·
•
Angular boxes-of-card board and like articles have been made hitherto by using
La piece of board-properly cut to shape and size, in which the lines which are to
form the bottom edges are then scored or little grooves cut along these lines and the
[Price 8d.1

page_text: sides are then bent up and the edges pasted together by small strips of paper, or
they are held together by little metal hooks.
By means of my invention it is possible to make boxes of oval or angular form
of any depth by drawing the blank into a matrice of corresponding shape by means
of a piston fitting therein. Boxes so made are much stronger, because there is no
scoring or grooving which weakens the material just in those places where it ought
to be strongest; the pasting them together by separate strips of paper is avoided
and they can therefore be produced much cheaper and in less time, because only one
operation is required to make a complete box of the piece of card board that has
been cut into proper shape.
By means of the annexed drawing the manner of making the boxes and the
apparatus used therein will be easily understood.
Figure 1 is a plan of the matrice, showing in dotted lines a paper blank put
thereon;
Figure 2 is a vertical section of Figure 1 with the piston put on the matrice
showing the formation of the box of the card board;
Figure 3 is a cross section of Figure 2;
Figure 4 is a section similar to Figure 2 without the piston and the card board
on the matrice ;
Figure 5 is a corresponding cross section of Figure 4.
The matrice consists of a channel shaped piece of metal or other hard material,
having a hole P of the shape of the box to be made going right through and having
two opposite edges A', standing higher up than the two other edges A'. The
edges A¹ and A³ are rounded off and the parts A left to the right and left side of
the edges A³ and which reach up to the edges A', are cut out or shaped obliquely
as will be seen best from Figure 4.
The die or piston F is of such shape and size that it leaves only barely so much
space between its circumference and the inside walls of the matrice or channel P, as
will be taken up by the card board forming the box to be made, so that the latter
will have to be pressed tightly together.
The card board blank is cut out in the shape T₁ T' T' T'e e e e indicated in
dotted lines in Figure 1. Instead of this, two blanks having together the same
shape when put crossways over each other might be used.
The matrice and the die are put into any suitable press, the matrice being
stationary, the die moving up and down. In making boxes of card board it is
recommended to heat the matrice by gas or otherwise and the working is then as
follows:
The blank T¹ T¹ T' T'eeee is put on the matrice; the die F is then pressed
down and in consequence of the peculiar shape of the edges of the matrice the
sides T T are first bent up, as shown in Figure 3, and they are bent quite
rectangular and lying close to the edges of the die when the same has moved down
so much, as shown in Figure 2 and the parts eeee of the broad edges T¹ T¹ reaching
beyond the narrow edges A A", have been bent round the die gradually by the
oblique parts A' A' mentioned above, so that when the die has gone down as deep
as shown in Figure 2 and the narrow sides T' T' of the paper or card board blank
will now be bent up, these sides will be put upon the edge parts ee ee in the further
going down of the piston, and if, as will be the case, the respective parts of the card
board have been provided with gluing material before, the sides TT will be pasted
to the side edges eeee and the box will be completed. When the piston is going
upwards again the box can be stripped off.
It will be observed, that when the side edges ee, ee are made of half the width of
the narrow sides of the channel P, they will meet in the middle and thus a box having
two sides of double thickness will be made.
When sheet metal is used instead of card board, metal boxes can be made in the
same way; the side edges e e e e would then be provided with some soldering material
and the matrice and die would be properly heated so that the sides would be soldered
together at the same time.

page_text: 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 :
A process of making boxes by pressing or pushing a suitably shaped blank into a
5 matrice of corresponding shape by means of a die filling nearly out the hollow space
of the matrice, the latter having two opposite edges AA³ partly cut out deeper than
the other two edges A'A' and the remaining space A' A³ being shaped obliquely,
so that the piston in going down first, bends up two opposite sides and at the same
time turns the projecting parts of these sides round the corners of the die and finally
bends up the two other sides, placing them upon the parts that had been bent round
unto these sides of the piston. The whole as set forth and shown.
Barmen, this 30th day of November 1892.
CARL SCHMIDT,
Per Karl J. Mayer,
Agent.