Apparatus for the Manufacture thereof.
Year: 1887

page_text: Apparatus for the Manufacture thereof.
I, HERMANN HENSCHEL', of Luckenwalde, Prussia, Manufacturer, do hereby declare
the nature of my said 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 said invention is the manufacture of card board boxes with a
projecting rim from one piece of material by means of pressing or flanging the same
in dies. According to this invention I make a card board box in two pieces, one
forming the lid and the other the box by pressing, blocking, or flanging a sheet of
card board in suitable dics by means of the apparatus hereafter described. Said
apparatus may be attached to any ordinary press suited to the purpose.
In the accompanying drawing Fig. 1 shews apparatus with sheet of cardboard in
position ready for pressing. Figs. 2, 3, 4, 5, 6, and 7 shew same in various stages
of the process. A inetal die B of the same internal shape as the section of the box
required viz. square, round, oval, or other section, is fastened by means of two
screws CC to two bars A A of equal thickness, the said screws project through the metal
die B their upper ends being provided with nuts D D a space of from 5 to 6 millimetres
being left between the nuts D. D. and the die B to allow the latter a small amount of
upward motion. The bars A A are fastened to the bottom plate of a suitable press.
The plunger or ram for pressing the box into the die is fastened to the top plate or
plunger of the press and is made in two pieces E and E¹, the piece. E fitting accurately
with the piece E¹ bored to receive it and moving up and down within it, such up and
down motion being effected by means of the wedge E. The piece E' is bored
cylindrical for about three quarters of its length, it is then chamfered down within from
1 to 3 millimetres of the bottom and again bored cylindrical, leaving at the extreme
end a ring f Fig. 1 from about 1 to 3 millimetres deep, according to the height of the
box edge, and as thick as the card board to be pressed. The piece E is made of steel
or other suitable material fitting the bore of E accurately, the upper surface thereof
as also the piece E forming a straight line, the lower surface projecting the depth of
the box below the edge of the part of the piece E'.

page_text: In order to form a box, a sheet of card board is placed in the position shewn at o
Fig. 1 and on the downward motion of the top plate of the press the sharp edge of the
plunger El cuts off, the proper quantity of material to form a box, the steel die E being
moved downwards still further by means of the wedge E", Fig. 2. fills up the inside
of the box and thus forms it into the proper shape, the outer form being given by means
of the die B. On the downward motion of the press being completed the box 9 projects
from 2 to 4 millimetres below the die B Fig. 3. On raising the top plate of the press,
the box and die B rise to the extent allowed by the screws D. D the plate K is then
placed between the bars A A and the pressure again applied, the wedge E" being drawn
out to its fullest extent (limited by the pin Fig. 5), the projecting rounded edge m
of the box g is formed by the material tending to escape between the bars A A and the
die B. The plate K is then removed and the finished box drops between the bars A A
(Figs. 6 and 7). The superfluous material shewn at i is then removed and the apparatus
is ready for the next piece of material to be operated on.
Having now particularly described and ascertained the nature of this said invention
and in what manner the same is to be performed I declare that what I claim is :-
1st. In the manufacture of cardboard boxes, the forming of the same with a projecting
rim at one operation from one piece of material by means of pressing or flanging
substantially as described.
2nd. The improved apparatus for pressing or flanging card board to make boxes
with a projecting rim, consisting of the combination of the dies B and E plunger E',
wedge E, bars A A, and plate K all operating as and for the purpose specified.
3rd. Cardboard boxes constructed substantially as above described.
Dated this Fourth day of October 1887.