Improvements in or relating to the Manufacture of Paper and Apparatus for Effecting same.
Year: 1893

page_text: Date of Application, 4th Apr, 1893
Complete Specification Left, 23rd May, 1893-Accepted, 24th June, 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Manufacture of Paper and
Apparatus for Effecting same.
I, JOHN HOLDEN of 475 Bolton Road, Darwen in the County of Lancaster,
Paper Mill Manager, do hereby declare the nature of my said invention to be as
follows:-
This invention refers to improvements in or relating to the manufacture of paper
and apparatus for effecting same and consists in means for obtaining a dyed or
coloured face or surface on paper on one or both sides from one pulp, either before
or after calendering has taken place. This I effect by providing suitable color or
dye boxes-with or without adjustable or other doctors-disposed in any convenient
position between the ordinary paper machine cylinders and the calendering portion
of the paper machine. The paper in its passage from the ordinary heated or other
cylinders of the paper machine is conducted by suitable rollers to the dyeing
apparatus or to the calendering portion of the machine. The paper under operation
may be dyed on one or both sides by being passed over rollers mounted in cisterns
or boxes containing dye or coloring matter. The dyeing or colouring cisterns
may be so disposed that dyeing may take place during the operation of calendering.
The rollers employed for distributing the dyeing or colouring matter on one or both
sides of the paper may be composed of wood or other materials covered with
composition, felt, india-rubber, or other suitable materials. After dyeing has taken
place the paper may be dried by the heated calendering rollers, or passed back to
the ordinary or other heated cylinder or cylinders if desired, from whence it is
passed to the calendering portion of the paper machine. This invention is equally
applicable to any well known or other kind of paper machine, the arrangements
being constructed accordingly. The dye rollers may be rotated by any suitable
mechanism from any convenient part of the machine.
Dated the 3rd April 1893.
EDMUND CHADWICK, F.I.C.PA.,
Agent.
COMPLETE SPECIFICATION.
Improvements_in_or relating to the Manufacture of Paper and
Apparatus-for-Effecting same.
I, JOHN HOLDEN of 475 Bolton Road, Darwen in the-County of Lancaster,
Paper Mill Manager, 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 :-
This invention refers to improvements in or relating to the manufacture of paper
and apparatus for effecting same and consists in means for obtaining a dyed or
colored face or surface on paper on one or both sides from one pulp, either before
or after calendering has taken place. This I effect by providing suitable color or
dye boxes-with or without adjustable or other doctors-disposed in any convenient
position between the ordinary paper machine cylinders and the calendering portion
of the paper machine. The paper in its passage from the ordinary heated or other
cylinders of the paper machine is conducted by suitable rollers to the dyeing
apparatus or to the calendering portion of the machine. The paper under operation
may be dyed on one or both sides by being passed over rollers mounted in cisterns
or boxes containing dye or coloring matter. The dyeing or coloring cisterns may
Price l

page_text: be so disposed that dyeing may take place during the operation of calendering.
The rollers employed for distributing the dyeing or coloring matter on one or both
sides of the paper may be composed of wood or other materials covered with
composition, felt, india-rubber, or other suitable materials. After dyeing has taken
place the paper may be dried by the heated calendering rollers, or passed back to
the ordinary or other heated cylinder or cylinders if desired, from whence it is
passed to the calendering portion of the machine. This invention is equally
applicable to any well known or other kind of paper machine, the arrangements
being constructed accordingly. The dye rollers may be rotated by any suitable
mechanism from any convenient part of the machine.
as is necessary to illustrate my invention wherein one side of paper is dyed or
colored before calendering takes place.
Fig. 2 is a part sectional longitudinal elevation of Fig. 1 showing my invention
for dyeing or coloring both sides of paper from a natural pulp differing from the
color of the finished paper before calendering takes place.
Fig. 3 is a sectional side view showing my invention applied for dyeing or
coloring paper on one side from natural pulp after calendering has taken place.
Fig. 4 is a sectional side view showing my invention applied for dyeing or coloring
paper on both sides from a natural pulp differing from the color of the finished
paper after calendering has taken place.
Fig 5, Sheet 2, is a plan of dye or color box and rollers.
Fig. 6 is a sectional elevation through line A B in Fig. 5, and
Fig. 7 is an outside end view showing bearings for dyeing or coloring rollers.
C are the ordinary "Couch" rollers; D the press rollers; E the heated drying
cylinders ; F the calendering rollers; G the batch roller receiving the finished
paper, and the line H is intended to represent the paper which travels in the
direction indicated by the arrows. To prevent confusion in understanding my
invention I have purposely omitted from the drawings the felts and their carrying
rollers employed for conveying or supporting the paper in its passage through the
machine.
The chief object of this invention consists in means for dyeing or coloring one or
both sides of paper manufactured from one pulp in its passage through the machine,
which I effect by providing the dye or color box I supported in any convenient
manner from the framework of the machine or otherwise. When one side only is
dyed or colored the other side is the color of the pulp the paper is manufactured
from. Each end of the dye or color box I is provided with the metallic bearings J, in
which are mounted the centres K of the dye or color rollers L and M. These
rollers may be composed of wood or other materials covered with composition, felt,
india-rubber, or other suitable materials. The dye or color box I may-although
not shown-be provided with adjustable or other doctors to regulate the quantity
of dye or color presented to the surface or face of the paper. On the roller L is
loosely mounted the wood or other roller O fitted with the centres N mounted in
the bearings J above the centres K of the roller L to ensure of the paper operating
ou or travelling over the dye or color roller L. The roller O is of any convenient
weight according to the nature or strength of the paper under process of manufacture.
The paper H is conducted by the guiding roller P to the dye or color rollers L
and M, from whence it is guided therefrom by the roller Q. The latter roller is so
disposed as to ensure of the paper being drawn over the roller M as shown in Fig. 6.
The guiding rollers P and Q are provided with the centres R mounted in the
bearings S attached to the dye or color box 1 or to any other convenient part of the
machine. The dye or color rollers L and M are rotated by friction caused by
the travelling movement of the paper, or they may-if desired or necessary-be
rotated mechanically from any convenient part of the machine according to the'

page_text: strength of the paper being manufactured. By the rotative action of the rollers L
and M in the dye or color in the box I they are recharged every revolution.
In carrying out my invention for dyeing or coloring one side of paper before
calendering is performed the dye or color box I and its attachments is disposed
between the bottom drying cylinder E and the calendering portion F of the machine
as shown in Fig. 1. The paper H-manufactured from one pulp-is conveyed to
the "Couch" rollers C, press rollers D, and the drying cylinders E in the usual
manner. When the paper H leaves the bottom drying cylinder E it is directed by
the roller T to the roller P which then directs it to and over the dye or color
rollers L and M, from whence it passes under the roller Q and round or over the
top drying cylinder E to the guiding roller U which directs it to the calendering
portion of the machine, and thence to the batch or receiving roller G.
For dyeing or coloring both sides of paper before calendering is performed the
dyeing or coloring box I and its attachments is duplicated as shown in Fig. 2, the
operations of drying and calendering being a repetition of that shown and described
in Fig. 1.
For dyeing or coloring one side of paper after calendering has been performed
the dye or color box and its attachments is disposed or fixed in the position shown
in Fig. 3; and for dyeing or coloring both sides after calendering has been
performed as shown in Fig. 4: the arrangements and positions of the dyeing or
coloring apparatus varying according to the construction of the paper machine.
Having now particularly described and ascertained the nature of my said inveu-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is :-
1. Dyeing or coloring one side of paper in the process of manufacture from one
pulp in a paper machine, either before or after calendering has been performed.
2. Dyeing or coloring both sides of paper in the process of manufacture from one
or the ordinary or natural pulp differing from the color of the finished paper in a
paper machine, either before or after calendering has been performed.
3. In combination with a paper machine the use of apparatus for dyeing or
coloring one or both sides of paper in the process of manufacture from one pulp
either before or after calendering has been performed consisting of the dye or color
box or boxes I, bearings J, rollers L and M and centres K, roller or rollers O, and
the means for guiding the same thereto and therefrom, substantially as described
and as illustrated in the annexed drawings.
Dated the 15th May 1893.
EDMUND CHADWICK, F.I.C.P.A.,
Agent.