IMPROVEMENTS IN DAMPING PAPER FOR PRINTING
Year: 1856

page_text: LETTERS PATENT to Frederick Arthur Magnay, of the Taverham Mills,
near Norwich, and Ralph Radcliffe Whitehead, of the Royal George
Mills, Saddleworth, for the Invention of "IMPROVEMENTS IN DAMPING
PAPER FOR PRINTING."
Sealed the 20th January 1857, and dated the 17th October 1856.
PROVISIONAL SPECIFICATION left by the said Frederick Arthur Magnay
and Ralph Radcliffe Whitehead at the Office of the Commissioners of
Patents, with their Petition, on the 17th October 1856.
We, FREDERICK ARTHUR MAGNAY, of the Taverham Mills, near Norwich,
and RALPH RADCLIFFE WHITEHEAD, of the Royal George Mills, Saddleworth,
do hereby declare the nature of the Invention for "IMPROVEMENTS IN DAMPING
PAPER FOR PRINTING," to be as follows:-
This Invention has for its object improvements in damping paper for
printing. For which purpose, according to one part of the Invention, a series
of felts or felted fabrics are employed. The dry paper (several sheets together)
is piled between the felts, which are moistened or saturated with water, by
which a pile is produced, consisting alternately of wet felt and paper; on the
upper layer of felt a board and weight or pressure is applied, by which means
the paper will be damped. Although various descriptions of felt or felted
fabrics may be used, it is preferred to employ one woven for the purpose, con-
sisting of a warp, the yarns of which are each composed of a woollen and and

page_text: cotton yarn twisted together, the fabric being shot by woollen weft; or, in
place of the above means, an endless felt or felted fabric may be caused to
move on rollers, the lower roller being immersed in a. trough of water, so that
the endless fabric in its movement may bring up a quantity of water. The
paper (in quires or other number of sheets in the opened state) is fed on to
the upper surface of the felt or felted fabric, and is by it carried between two
pressing rollers, the upper one being of wirework; similar to a dandy roll used
by paper makers. By thus pressing the paper with the wet endless felt or
felted fabric between rollers the paper is damped.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Frederick Arthur Magnay and Ralph Radcliffe Whitehead
in the Great Seal Patent Office on the 17th April 1857;...
"TO ALL TO WHOM THESE'PRESENTS SHALL COME, we, FREDERICK
ARTHUR MAGNAY, of the Taverham Mills, near Norwich, and RALPH RADCLIFFE
WHITENEAD, of the Royal George Mills, Saddleworth, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by-Her Letters
Patent, bearing date the Seventeenth day of October, in the year of our
Lord One thousand eight hundred and fifty-six, in the twentieth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Frederick Arthur Magnay and Ralph Radcliffe Whitehead, Her
special licence that we, the said Frederick Arthur Magnay and Ralph
Radcliffe Whitehead, our executors, administrators, and assigns, or such others
as we, the said Frederick Arthur Magnay and Ralph Radcliffe Whitehead,
our executors, administrators, and assigns, should at any time agree with, and
no others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN DAMPING
PAPER FOR PRINTING," upon the condition (amongst others) that we, the said
Frederick Arthur Magnay and Ralph Radcliffe Whitehead, our executors or
administrators, by an instrument in writing under our or their hands and
seals, or under the hand and seal one of us or them, should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Ralph Radcliffe Whitehead, on 'behalf
of myself and the said Frederick Arthur Magnay, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed; to be particularly described and ascertained in and by the following
statement thereof, that is to say:-
This Invention has for its object improvements in damping paper for
printing. For which purpose, according to one part of the Invention, a series
of felts or felted fabrics are employed. The dry paper (several sheets-together)
is piled between the felts, which are moistened or saturated with water, by
which a pile is produced, consisting alternately of wet félt and paper; on the
upper layer of felt a board and weight or pressure is applied, by which means
the paper will be damped. Although various descriptions of 'felt or felted
fabrics may be used, it is preferred to employ one woven for the purpose, con-
sisting of a warp, the yarns of which are each composed of a woollen and
cotton yarn twisted together, the fabric being shot by woollen weft; or, in
place of the above means, an endless felt or felted fabric may be caused to
move on rollers, the lower roller being immersed in a trough of water, so that
the endless fabric in its movement may bring up a quantity of water. The
paper (in quires or other number of sheets in the opened state) is fed on to
the upper surface of the felt or felted fabric, and is by it carried between two
pressing rollers, the upper one being of wirework, similar to a dandy roll used
by paper makers. By thus pressing the paper with the wet endless felt or
felted fabric between rollers the paper is damped.
The above description very fully explains the manner of using separate felts
and piling the dry paper between them in order to damp the same suitable
for printing; it will, therefore, not be necessary more fully to describe the same.
DESCRIPTION OF THE DRAWING.
Figure 1 is a vertical section, and Figure 2 a plan, of a machine such as I
prefer for carrying out the second part of my Invention. A, A, feed rolls;
B, B, roll for travelling felt; C, adjusting roll to press paper; D, regulation
or guide roll; E, water trough; F, machine frame; G, wet felt; H, perforated
metal tube roll to wet paper going on to felt; I, perforated metal tube roll
for wetting upper side of paper; J, quire of paper passing through; K, paper
after wetted.
Having thus described the nature of our Invention, and the manner of
performing the same, we would have it understood that what we claim is,-
First, the damping of paper for printing by piling the same between felts,
as herein described.

page_text: And, secondly, the mode herein described of combining mechanical parts into
a machine for damping paper for printing.
In witness whereof, I, the said Ralph Radcliffe Whitehead, have hereunto
set my hand and seal, this: Seventeenth day of April, in the year of
our Lord One thousand eight hundred and fifty-seven.
Witness,
S. CARPMAEL.
RALPH RADCLIFFE WHITEHEAD. (L.S.)