Improvements in Apparatus for Damping Paper.
Year: 1888

page_text: Date of Application, 27th Oct., 1888
Complete Specification' Left, 23rd July, 1889-Accepted, 31st Aug., 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Damping Paper.
I FREDERICK WRIGLEY of Broadoaks Bury in the County of Lancaster Paper
Manufacturer do hereby declare the nature of this invention to be as follows:-
This invention is designed principally for imparting a slight but uniform dampness
to paper in the paper making machine between the drying cylinders and the callender-
ing rollers, but it is equally applicable for damping paper in a separate machine before
finishing, or previously to printing or in any other case where uniform damping is
required.
The invention consists mainly in the combination with a drum or cylinder of wood
or other suitable material, of an endless band of woollen felt of a suitable width.
This endless felt is carried by means of guide rollers through a trough of water,
then through a pair of squeezing rollers, which squeeze out all superfluous moisture,
next round one half or more of the first named drum or cylinder and then back to
the water trough and so on continuously.
The paper to be damped is conducted by guide rollers, and passing partially round
the drum and between it and the moistened endless felt becomes thereby damped in an
even and uniform manner.
The degree of dampness imparted may be regulated by giving more or less pressure
to the squeezing rollers.
Dated this 26th day of Dotahan 1000
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant,
COMPLETE SPECIFICATION.
Improvements in Apparatus for Damping Paper.
I FREDERICK WRIGLEY of Broad Oaks, Bury in the County of Lancaster Paper
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 is designed principally for imparting a slight but uniform dampness
to paper in the paper making machine between the drying cylinders and the calender-
ing rollers, but it is equally applicable for damping paper in a separate machine before
finishing or previously to printing or in any other case where uniform damping is
required.
The nature of my said invention and the manner in which the same is to be
performed, or carried into practical effect will be readily understood on reference to
the sheet of drawings hereunto annexed and the following explanation thereof.
Fig. 1. on the annexed drawings is a side elevation of so much of a paper making
machine as is necessary to illustrate the application of my invention thereto, a being
part of the main frame between the drying and the calendering rollers.
The invention consists mainly in the combination with a drum or cylinder b of
wood or other suitable material, of an endless band c of woollen felt of a suitable
width.
This endless felt is carried by means of guide rollers d through a trough e of water,
then through a pair of squeezing rollers f which squeeze out all superfluous moisture,
next round one half or more of the first named drum or cylinder 6 and then back to
the water trough and so on continuously.
The paper to be damped is also conducted by guide rollers, and passing partially
round the drum b and between it and the moistened endless felt c becomes thereby

page_text: damped in an even and uniform manner. The degree of dampness imparted may be
regulated by giving more or less pressure to the squeezing rollers f
Fig. 2 on the drawing is a similar view showing a slight modification of my inven-
tion which is better adapted than the former for damping thicker kinds of paper as
the moisture is applied simultaneously to both sides of the paper.
For this purpose 1 propose to employ an additional endless felt c* passing partially
round the same wood or other drum or cylinder 6 and guide rollers d* also an
additional water trough ex and another pair of squeezing rollers.
In either of these modifications the squeezing rollers may be used to supply
moisture to the endless felt, or felts, as shown at Fig. 2.
It will be observed that in this modification the paper becomes damped on both
sides simultaneously by passing in between the two moistened endless felts c and ex
whereby the moisture is more evenly distributed.
The arrows show the course of the paper and the direction in which the endless
felts travel.
Having now particularly described and ascertained the nature of my said invention
and in what
claim is :-
manner the same is to be performed I declare that what I
The improved apparatus for damping paper consisting chiefly of the combination
with a drum or cylinder of wood or other suitable material of an endless band (or
two endless bands) of woollen felt carried by guide rollers and continuously damped
by passing through a trough (or troughs) of water and then through squeezing
rollers or otherwise substantially as hereinbefore described and illustrated by the
drawings annexed.
Dated this 22nd day of July 1889.
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant.