Improved Device for Bending Up the Edge of Cut Out Sheets of Wood Paper, Cardboard, or the like.
Year: 1891

page_text: Date of Application, 21st Sept., 1891-Accepted, 12th Dec., 1891
COMPLETE SPECIFICATION.
Improved Device for Bending Up the Edge of Cut Out Sheets of
Wood Paper, Cardboard, or the like.
I, FRIEDRICH VOLGER of Brunswick in the German Empire, Manufacturer
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 device for bending up the edges of sheets of wood
paper, cardboard or the like which are cut out in round, oval or other form or
discs of other readily ruptured material can be treated in like manner and are used
for covering the seats of water closets and for other purposes.
Fig. 1 is an elevation,
Fig. 2 is a section of the disc with bevelled or turned up edges,
Fig. 3 is a section showing the use of the disc as covering for a water closet seat,
Fig. 4 is an elevation of the device for making the bevelled edge to the cut in
the disc.
The sheets or discs a of cheap wood paper, thin cardboard or the like are, after
having been cut out by means of round, oval or other cutters, packed in bundles
of desired number of discs between annular plates b preferably connected by
appropriate clamping devices. When the wood paper, cardboard or other discs
have been cut out the edges are bevelled or bent up, after having been well damped,
by being passed over or hung on a hollow or massive metal, porcelain, glass or other
mandril d which is so arranged that the same can be heated from any desired source
of heat. The apex d' of the mandril, mold or cone d is of about like diameter
with the opening in the disc before the edge is bent upwards and increases
gradually in size corresponding to the diameter of the opening after the edge has
been bevelled or turned up; the lower part of the mandril decreasing in size so
as to facilitate the removal of the discs. When a bundle of discs have been well
moistened at the edge of the opening cut in the same, said bundle is placed on the
warm mandril or mold so that the moistened paper or board giving way or being
extended, the same will gradually glide down the mandril or mold by their own
weight or by weights placed above the same, the conicity of the mold or mandril
causing the edges to be turned up and as the edges are also dried in passing down
the heated mandril or mold they will remain in such form and can be readily
removed from the mold or mandril. The aforedescribed process for manufacturing
discs with bent up edges has the advantage in comparison with the known pressing
arrangements for cardboard, paper etc. by means of plates etc. of not only being
cheaper and simpler, as a large number of such discs with bent up edges can be
simultaneously produced, but the process has further the advantage that the
widening or bending up of the edge takes place so gradually in consequence of the
conicity of the mold that a tearing of the material however weak it may be, such
for instance as unsized wood paper or board, will not take place.
Having now particularly described and ascertained the nature of my said
invention and the manner in which the same is to be performed I declare that what
I claim is :
1. A device for bending up the edge of cut out discs of wood paper, cardboard
or the like consisting of the conically ending hollow or massive mold or mandril d
which can be warmed from a suitable source of warmth and onto which the bundles
of discs are placed so that they will by their own weight or by means of suitable
weighting gradually sink down the mandril or mold and are not only bent up but
have become dry so that they will retain their form after removal from the mandril

page_text: or mold substantially as set forth in the foregoing Specification and represented in
the accompanying drawing.
2. Paper or other discs a cut out in the centre the edge of the latter being
bevelled or bent upwards substantially as and for the purpose set forth.
Dated this 21st day of September 1891.
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C.,
Agents for the Applicant.