A Machine for Brushing Cardboard or Sheets of Paper.
Year: 1893

page_text: te of Application, 25th Jan., 1893-Accepted, 18th Mar., 1893
A Machine for Brushing Cardboard or Sheets of Paper.
I, LEON THEOPILE PIEPLU, of 20 Rue Bréa, Paris, in the Republic of France,
Mechanical 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 machine is distinguished from the various systems hitherto known by its
arrangement for the feed of an endless table travelling between two superposed
rollers which by pressure and rotary motion regulate the progress of the table,
and, by this process, give to the sheet of paper to be brushed the necessary
adhesion, and so hold it that the brush in spite of its friction thereon cannot
displace it by reason of its own motion.
It results from this arrangement "of two rollers for the pressing and feeding of
the table," that all sheets of paper once placed on the table are submitted at its
own rate of progress; and, by the adhesion acquired by the pressure when passing
between the rollers, they remain firmly attached to the table although the friction
of the brush tends to displace them. In view of the adherence resulting from the
compression, the thickness of the sheet of paper to be brushed is of little moment,
and my invention gives the advantage, unknown in all other systems, of being able
to indiscriminately brush thin paper or cardboard sheets, perfect brushing being
obtained by the difference of the speeds of the brush and the table.
Furthermore, to this system of feeding is due the simplicity of my machine in
which all systeins of clips, suckers, perforated tables &c. are suppressed.
In order that my invention may be clearly understood I will describe the
machine with reference to the attached drawings.
Figure 1 is a side elevation.
Figure 2 is a plan.
Figure 3 is an end elevation.
Figure 4 is an arrangement for feed of table.
Figure 5 is an arrangement with two brushing brushes.
The table T of endless canvas or single cloth American, or rubber cloth, is
drawn by two feed rollers A and B the pressure of which, adjustable as required
by the work, is obtained by the nut and screw V₁ operating the lower roller B
whilst A is fixed. The latter is controlled by the brush itself M, movement being
transmitted through the pulleys 1, 2, 3, 4 which effect the necessary relation
between the brush and the table to ensure perfect brushing.
In a vertical line with the axis of the brush M, and underneath it, is a roller G
which by means of the nut and screw V enables any required pressure to be given
to the table in order that the sheet in passing underneath the brush may receive a
suitable amount of friction, the degree of friction or of brushing being absolutely
controllable according to the quality of the paper and its thickness.
The table T is guided in its movement by two end rollers D, E slightly convex,
free on their pivots, and the rotation of which follows the movement of the table
itself.
In front of the brush, where the sheet leaves, are small brushes p, q, r, s, the
object of which is to keep the sheet down when leaving the brushing roller and
oblige it to slide on to the table O arranged for its reception.
The machine is set in motion by the pulley g, the belt of which, by means of the
pulley I, drives the brush. On the same shaft L are the fast and loose pulleys Z, Y
allowing the machine to be started or stopped by an ordinary disengaging.
gear P.
The machine being put into operation, the sheet of paper for brushing is placed
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page_text: on the table T in front of the feed rollers A B, and in passing between the rollers
is pressed uniformly on to the table. On coming under the brush M it is held by the
two feed rollers and thereby cannot suffer any displacement, that is, follow the
increased speed, but maintains the movement imparted to it by the table itself, with
which it forms part. On leaving the brush, following the inclination of the table,
the brushed sheets slide on to the small table O arranged for their reception.
The table may be stretched or not and may be of any desired shape; it may be
endless or otherwise as its length is of little importance, the result obtained being
not merely to produce the movement of the table, but especially to hold the sheet
on its passage under the brush.
Finally, certain papers according to their quality and composition are more or
less difficult to brush, and to obtain the necessary brilliancy, without for that
purpose passing the sheet several times under the brush, I reserve to myself the
right of constructing these machines with one or several brushes as shown in
Figure 5.
A and B are the feed rollers of the table T and for holding the sheets, and
whose distance apart, that is to say, the necessary friction, is obtained by the aid
of the nut and screw V.
M M are the brushing brushes, the friction of which on the table is regulated
by the rollers CD controlled by the nuts and screws V1, V₁. E, F, are small
brushes in contact with the brushing ones, and the object of which is to insure the
carriage of the sheet which on leaving a brush is forced under the other, no other
course being open, these brushes by their direction of rotation indicated by an
arrow, keeping it in one direction.
According to the diameter of the brushes and the thickness of the paper it may
be necessary to duplicate the arrangement of the two superposed rollers A, B in
front of each brush in order to hold the sheet when passing under the brush.
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 :-
1. In machines for brushing cardboard or paper sheets the arrangement of feed
and for holding the paper to be brushed comprising a table travelling between
superposed rollers, substantially as described.
2. The arrangement and construction of machines for brushing cardboard or
sheets of paper substantially as described with reference to the drawings.
Dated this 25th day of January 1893.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C., Agents.