IMPROVEMENTS IN ATTACHING OR FIXING THE DEVICES FOR EFFECTING THE WATER-MARK IN PAPER TO THE COVERS OF THE DANDY ROLLS AND TO THE MOULDS USED IN THE MANUFActure OF PAPER; ALSO IN THE CONSTRUCTION OF SUCH DANDY ROLLS, COVERS, AND MOULDS
Year: 1870

page_text: LETTERS PATENT to Thomas Allen Marshall and Charles Dudley
Marshall, both of Bishopsgate Street Without, in the City of
London, Engineers, for the Invention of "IMPROVEMENTS IN ATTACHING
OR FIXING THE DEVICES FOR EFFECTING THE WATER-MARK IN PAPER TO THE
COVERS OF THE DANDY ROLLS AND TO THE MOULDS USED IN THE MANUFActure
OF PAPER; ALSO IN THE CONSTRUCTION OF SUCH DANDY ROLLS, COVERS, AND
MOULDS."
Sealed the 2nd December 1870, and dated the 6th June 1870.
PROVISIONAL SPECIFICATION left by the said Thomas Allen Marshall
and Charles Dudley Marshall at the Office of the Commissioners of
Patents, with their Petition, on the 6th June 1870.
We, THOMAS ALLEN MARSHALL and CHARLES DUDLEY MARSHALL,
both of Bishopsgate Street Without, in the City of London, Engineers,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
ATTACHING OR FIXING THE DEVICES FOR EFFECTING THE WATER-MARK IN PAPER
TO THE COVERS OF THE DANDY ROLLS, AND TO THE MOULDS USED IN THE MANUFAC-
TURE OF PAPER; ALSO IN THE CONSTRUCTION OF SUCH DANDY ROLLS, COVERS, AND
MOULDS," to be as follows:-
Our Invention relates, firstly, to the means of securing the device in

page_text: wire, forming the water-mark, to the wires of dandy roll or of mould
for laid papers so called, or to the wire cloth covering the roll, or to the
wire cloth of mould for wove papers.
This has hitherto been effected by sewing with fine wire. Our Inven-
tion consists, firstly, in soldering the device to the wires of roll or
the wire cloth covering the roll with any suitable solder, thus dispensing
with the sewing and also with the thin wire.
This Invention relates, secondly, to an improved construction of such
dandy rolls and of such moulds as are made of ribs and wires crossing
or intersecting each other. Such ribs and wires at the places where
they thus cross or intersect have hitherto been united by sewing them
together with fine wire,
This mode of uniting or connecting the ribs and wires is defective,
inasmuch as it is not durable, being easily broken from wear or from
the corrosive action of acids in the paper pulp.
Now our Invention consists, secondly, in fastening or securing the
wires to the ribs by soldering the same together with any desirable kind
of solder that will resist the corrosive action of the acids in the pulp.
The kind of solder we use is of the description known as gasfitters'
solder, or blow pipe solder, but we do not confine ourselves to that 2
particular description of solder, but use any hard or soft solder
suitable; this part of our Invention consisting chiefly in the mode of
uniting the ribs and wires by soldering instead of sewing, thus dispensing
entirely with the thin sewing wire,
Our Invention relates, thirdly, to making the joints of the laid roll 2
covers, and consists in making these joints by soldering the same instead
of sewing them with wire as has hitherto been done,
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Allen Marshall and Charles Dudley
Marshall in the Great Seal Patent Office on the 6th December 1870. 30
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS
ALLEN MARSHALL and CHARLES DUDLEY MARSHALL, both of Bishops-
gate Street Without, in the City of London, Engineers, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of June, in the year of our
Lord One thousand eight hundred and seventy, in the thirty-third
year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Thomas Allen Marshall and Charles Dudley
Marshall, Her special licence that we, the said Thomas Allen Marshall
and Charles Dudley Marshall, our executors, administrators, and assigns,
or such others as we, the said Thomas Allen Marshall and Charles
Dudley Marshall, 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 ATTACHING OR FIXING THE DEVICES FOR
EFFECTING THE WATER-MARK IN PAPER TO THE COVERS OF THE DANDY ROLLS, AND
TO THE MOULDS USED IN THE MANUFACTURE OF PAPER; ALSO IN THE CONSTRUCTION
OF SUCH DANDY ROLLS, COVERS, AND MOULDS," upon the condition (amongst
others) that we, the said Thomas Allen Marshall and Charles Dudley
Marshall, our executors or administrators, by an instrument in writing
under our, or their, or one of their hands and seals, 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.
NOW KNOW YE, that we, the said Thomas Allen Marshall and
Charles Dudley Marshall, do hereby declare the nature of our said
Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement,
that is to say :-
-
Our Invention relates, firstly, to the means of securing the device in
wire, forming the water-mark, to the wires of the dandy roll or of the
mould for laid papers so called, or to the wire cloth covering the roll, or
to the wire cloth of the mould for wove papers.
This has hitherto been effected by sewing on the pieces forming such
device with fine wire. Our Invention consists, firstly, in soldering the
device to the wires of the roll, or of the mould, or to the wire cloth
covering the woll or of the mould with any suitable solder, thus

page_text: dispensing with the process of sewing, and also with the thin wire used
for sewing.
This Invention relates, secondly, to an improved construction of such
dandy rolls and of such moulds as are made of ribs and wires crossing
or intersecting each other. Such ribs and wires at the places where
they thus cross or intersect have hitherto been united by sewing them
together with fine wire.
This mode of uniting or connecting the ribs and wires is defective,
inasmuch as it is not durable, being easily broken, either from wear
or from the corrosive action of the acids in the paper pulp.
Now our Invention consists, secondly, in fastening or securing the
wires to the ribs by soldering the same together with any desirable
kind of solder that will resist the corrosive action of the acids in the
pulp.
The kind of solder we prefer to use is of the description known as I
gasfitters' solder, or blow pipe solder, but we do not confine ourselves
to that particular description of solder, but use any hard or soft solder
suitable; this part of our Invention consisting chiefly in the mode of
uniting the ribs and wires by soldering instead of sewing, thus dispensing
entirely with the thin sewing wire.
Our Invention relates, thirdly, to making the joints of the laid roll
covers, and consists in making these joints by soldering the same instead
of sewing them with wire as has hitherto been done.
2
Having now particularly described our Invention, and the manner in
which the same is to be performed, we wish it to be particularly under- 2
stood that what we claim is, the substitution of soldering for sewing in
the manner and for the purposes described in this Specification.
In witness whereof, we, the said Thomas Allen Marshall and
Charles Dudley Marshall, have hereunto set our hands and seals,
this Fifth day of December, in the year of our Lord One thousand 3
eight hundred and seventy.
THOMAS ALLEN MARSHALL.
(L.S.)
CHARLES DUDLEY MARSHALL. (L.S.)