Improved Machine or Apparatus for Bending Pasteboard, Paper, Cardboard, and the like Without Previous Scoring by Gathering or Puckering it along the line of the Bend.
Year: 1898

page_text: Date of Application, 23rd Nov., 1898-Accepted, 14th Jan., 1899
COMPLETE SPECIFICATION.
Improved Machine or Apparatus for Bending Pasteboard, Paper,
Cardboard, and the like Without Previous Scoring by Gathering
or Puckering it along the line of the Bend.
I, CARL FRIEDRICH ROSENCRANTZ, of Annenstrasse, 42, Dresden, in the King-
dom of Saxony, 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:
The various apparatuses for gathering or puckering (which I have hereinafter
referred to as "stowing") pasteboard paper, cardboard and the like (hereinafter
referred to as "cardboard") or for forming in such materials ribs or raised veins,
have generally followed the lines of the apparatus for such purpose described in
the United States Patent No. 235821 of the year 1880, and they all have, in
common therewith, the characteristic that two pair of jaws serve to hold the card-
board or the like to be operated upon, and that for the purpose of
the cardboard between them these jaws are made to approach one another.
In all these apparatuses some at least of the said jaws are, as in the example
above quoted movable around joints.
stowing"
In actual use these joints must be cared for and kept in working order if the
apparatus is to remain fit for operation, otherwise the apparatus will not work.
Now if the use of these joints can be avoided such "stowing" apparatus will gain
in durability, and hence in value, as a machine-tool.
Astowing" apparatus improved in this direction is the object of the present
invention and this is shown in transverse section in Fig. 1 of the accompanying
drawings and is of the following nature.
A tube a of springy material (preferably spring steel) has a slot a¹ extending
along its full length. It is so mounted in a groove or channel 6 that the slot a¹
is at the highest part and so that there is no room for the tube to expand laterally.
The groove or channel b also supports a table the top surface of which is in the
drawing indicated by the line t. Over the slot a¹ is mounted a press-bar or
plunger c capable of moving in a vertical direction. Its lower edge is, for a
reason presently to be stated, moderately bevelled on both sides.
The operation of the arrangement is as follows:
The cardboard or the like to be operated upon is placed on the work table t, go
that the part to be "stowed" is over the slot a¹. The press bar c is then lowered,
and forces the cardboard first against the edges of the slot a¹, see Fig. 2, and in
consequence of the end of the plunger c being bevelled these edges are to some
little extent forced into the cardboard. The object of the bevelling the lower part
of the press bar is just to cause the edges a¹ to penetrate into the cardboard
as stated. In continuing its downward movement, the press bar e will force down
those parts of the tube a which lie near to the edges of the slot a¹, which yield by
reason of the elasticity of the material. This naturally causes the edges to
approach one another so that the cardboard between them is pushed together or
stowed as shown in Fig. 3. This effect however is produced only if the

page_text: said edges are
prevented from slipping along the surface of the cardboard, and this
is effected by the edges being forced into the cardboard as above described.
The bevels on the press bar for favouring the penetration of the edges into the
cardboard, must not be excessive as otherwise (if the bevel is excessive) the closing
up of the edges would be made difficult.
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:-
An apparatus for stowing, that is to say, gathering or puckering paper, card-
board, and the like, characterized by a tube a of springy material having a
longitudinal slot at which tube a is enclosed in a channel or groove b, and opposite
the slot a¹ a press-bar c capable of vertical movement and bevelled at its lower part
which press-bar in descending first grips the cardboard or the like between itself
and the edges of the slot a¹, then forces downwards (by reason of their clasticity)
the part of the tube a near the slot a¹ in which operation the edges are brought
nearer to one another and in so doing gather or pucker (stow) the cardboard, or the
like, between them.
Dated the 23rd day of November 1898.
NEWNHAM BROWNE,
Agent for the Applicant.