Year: 1887

page_text: Date of Application, 4th May, 1887
Complete Left, 4th Feb., 1888
Complete Accepted, 23rd Mar., 1888
"
I, ROBERT BROWN, of 7 Jackson Street, Penicuick, in the county of Midlothian,
Paper Maker, do hereby declare the nature of my invention to be as follows:-
My Invention has reference to and comprises improvements in the construction of
dandy rolls" of paper making machines; that is, rolls for making the longitudinal
and transverse lines, or water lines and marks, in "laid " lined paper, with the object
and for the purpose of making a more uniform and laid line and coloured paper on
both sides, and in being able to drive the machine at a higher speed than heretofore.
The nature and novelty of the Invention consist all as follows:-Whereas the
ordinary laid roll has only one cover, this roll has a wove cover put on the frame first, then
a wire is run over the wove and soldered on at each end then the line mark is soldered
on to the top of the laid wire, which makes the laid run along the machine instead of
across the machine as is the case with ordinary laid rolls. The under wove cover is
woven the reverse way of the ordinary wove wire as it would be impossible to run the
wire lines round the body or frame with an ordinary wove wire. The advantages to
be derived from the above are as follows:-It makes a much more distinct laid mark,
and the laid is more equal on both sides of the sheet, it also aids materially in keeping
the colour equal on both sides of the sheet, because of the wove cover which is under-
neath keeping the water on the paper and therefore not allowing the fibre to be opened
up so much. Then the paper machine can go at a higher rate of speed as the wove
part of the roll which keeps the water more on the paper prevents it lifting the fibre,
then the wove cover also prevents the liquid material or stuff from getting into the
inside of the roll, (which happens in the case of the ordinary roll) and thus saves the
time, and the paper which is lost, while cleaning the ordinary roll.
Dated thin Atl
M
1007

page_text: COMPLETE SPECIFICATION.
Improvements in the Dandy Rolls of Paper Making Machines.
I, ROBERT BROWN of 7 Jackson Street, Penicuik, in the County of Midlothian North
Britain, Paper Maker, 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 :-
"
My Invention has reference to and comprises improvements in the construction of
dandy rolls" of paper making machines that is, rolls for making the longitudinal
and transverse lines or water lines and marks in "laid" lined paper, with the object and
for the purpose of making a more uniform "laid "line; of equalizing the colour of the
paper on both sides, and allowing the machine to be driven at a higher speed than
heretofore.
The nature and novelty of the Invention consists as follows. Whereas the ordinary
laid roll has only one cover, which forms the laid lines, this roll has a wove cover put
on the frame first. A "laid "wire is then run over the wove cover and soldered on
at each end, and thereafter the "line mark" wires are soldered on to the top of the
"laid "wire, which makes the laid run along the machine instead of across the machine
as is the case with ordinary laid rolls. The under wove cover is woven with a wider
mesh than is the case with the ordinary woven wire at present in use, to allow the
laid wire to run as continuously as possible in the frame encircling grooves or hollows
formed by the meshes of the wove cover, the pitch of the spiral laid wire being equal
to two meshes of the wove cover. The said wove cover may be made fine or coarse, or the
meshes close or wide as required to suit the desired number of threads of the laid
wire to the inch. To run the laid wire round the body or frame having an ordinary
wove wire, as at present in use, would not be suitable as the meshes of the wire
cloth are woven too fine or close to make the before mentioned frame encircling grooves
or hollows wide enough to receive the laid wire and thereby keep it firmly in the
desired position.
The advantages to be derived from the above are as follows. It makes a more
distinct laid mark, and the laid is more equal on both sides of the sheet, it also aids
materially in keeping the colour equal on both sides of the sheet, because of the wove
cover which is underneath, keeping the water on the paper, and therefore not allowing
the fibre to be opened up so much. The paper machine can be worked at a higher
rate of speed, as the wove part of the roll which keeps the water more on the paper
prevents its lifting the fibre. The wove cover also prevents the liquid material or
stuff from getting into the inside of the roll (which happens in the case of the ordinary
roll) and thus saves the time and the paper which is lost while cleaning the ordinary
roll.
It is evident that my arrangement of wires for producing the laid and line marks,
can be easily applied to the laid cover on rolls at present in use. In order to produce

page_text: laid lined writing papers the wires are soldered on about a quarter of an inch apart,
or whatever distance is required for the laid lined mark on the paper. I use either
copper or brass wires for my dandy roll.
In order that iny said Invention may be most fully understood and readily carried
into effect, I will proceed to describe the drawings hereunto annexed.
Figure 1, is a longitudinal view of a Dandy Roll constructed according to and
constituting my present Invention. Parts of the roll have been broken away to
illustrate their construction more effectually. Figure 2 is an end view of the same.
My present improvements consist in placing a wove cover A on the frame B of the
roll (the said frame B, being constructed in the usual manner) then a "laid
wire C,
wound round the wove cover A, and soldered to it at each end, the said laid wire is
is run as continuously as possibly in the frame encircling grooves or hollows formed
by the meshes of the wove cover A, the pitch of the spiral laid wire C, being equal to
two meshes of the wove cover. Over this laid wire are secured preferably by solder
longitudinal or "line mark" wires D, as shewn at figures 1 and 2.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is.
The general arrangement and combination of parts constituting the improved
dandy roll substantially as herein before set forth with reference to the annexed
drawings.