IMPROVEMENTS IN PAPER-MAKING MACHINERY
Year: 1867

page_text: LETTERS PATENT to Ebenezer Noah Gregory, of Camberwell, in the
County of Surrey, Paper Machine Wire Cloth Manufacturer, for the
Invention of "IMPROVEMENTS IN PAPER-MAKING MACHINERY."
Sealed the 15th March 1867, and dated the 4th January 1867.
PROVISIONAL SPECIFICATION left by the said Ebenezer Noah Gregory
at the Office of the Commissioners of Patents, with his Petition, on the
4th January 1867.
J, EBENEZER NOAN GREGORY, of Camberwell, in the County of Surrey, Paper
Machine Wire Cloth Manufacturer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN PAPER-MAKING MACHINERY," to be as follows:--
My Invention of "Improvements in Paper-making Machinery" relates to
that class of paper machinery in which the paper is formed on an endless
wire cloth, and has for its object to prevent the undue wear and tear to
which this wire cloth is subjected by reason of its friction on the rollers and
surfaces over which it passes. As these surfaces are usually metallic the
continual rubbing of the metallic cloth thereon soon wears it out, and thereby
entails considerable expence and loss of time. In order to obviate this I cover the
supporting rollers and also the guide and tension rollers wholly or in part with
some soft or yielding substance such as vulcanized india-rubber, gutta percha,
leather, felt, or woollen cloth, or a composition of glue and treacle, such as is
used for making inking rollers of printing machines, or any other suitable

page_text: compound into which the projecting and wearing parts of the wire cloth may
imbed themselves; this soft or yielding cover may either be fixed securely on
the supporting and guide rollers so as to rotate therewith, or it may be placed
loosely thereon so that it may move with the wire cloth even if the rollers do
not themselves rotate. As a modification of the above the rollers them-
selves may be formed of some soft or yielding material. Instead of covering
the rollers as above mentioned an intervening endless cloth or cloths of felt or
textile fabric may be placed between the wire cloth and the supporting and
guide rollers so as to prevent the wire cloth from coming into contact with the
surface of the latter.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Ebenezer Noah Gregory in the Great Seal Patent Office
on the 4th July 1867.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EBENEZER
NOAH GREGORY, of Camberwell, in the County of Surrey, Paper Machine
Wire Cloth Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourth day of January, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirtieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Ebenezer Noah Gregory, Her special licence that I, the said Ebenezer Noah
Gregory, my executors, administrators, and assigns, or such others as I, the
said Ebenezer Noah Gregory, my 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 "IM-
PROVEMENTS IN PAPER-MARING MACHINERY," upon the condition (amongst others)
that I, the said Ebenezer Noah Gregory, my executors or administrators,
by an instrument in writing under my, 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 I, the said Ebenezer Noah Gregory, do hereby
declare the nature of my said Invention, and in what manner the same

page_text: is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the Drawing hereunto
annexed and to the letters and figures marked thereon (that is to say):-
My Invention of "Improvements in Paper-making Machinery" relates to
that class of paper machinery in which the paper is formed on an endless
wire cloth. The object of the Invention is to prevent the undue wear and
tear to which this wire cloth is subjected by reason of its friction on the
rollers and surfaces over, under, or round which it passes while travelling
forward with the paper pulp thereon. As these surfaces are usually metallic
the continual rubbing of the metallic cloth thereon soon wears out the endless
wire cloth, and thereby entails considerable expense and loss of time for
repairs and renewal of the wire cloth. In order to prevent undue wear and
tear of the wire cloth I cover the supporting rollers or some of them and
sometimes also the guide and tension rollers wholly or in part with some soft
or yielding substance, such as vulcanized india-rubber, gutta percha, leather,
felt, or woollen cloth, or a composition of glue and treacle, such as is used for
making the inking and distributing rollers of printing machines, or any other
suitable compound into which the projecting and wearing parts of the wire
cloth may imbed themselves, as the endless wire cloth travels onwards over,
under, or around the rollers; this soft or yielding cover may either be fixed
securely on the supporting, guide, and tension rollers so as to rotate there-
with, or it may bo placed loosely thereon so that it may move with the wire
cloth even if the rollers do not themselves rotate. As a modification of the
above the rollers themselves may be formed of some soft or yielding
material. Instead of covering the rollers as above mentioned an intervening
endless cloth or cloths of felt or textile fabric may be placed between the wire
cloth and the supporting, guide, and tension rollers; this endless cloth of felt
or textile fabric will travel with the endless wire cloth, and will thus prevent
the wire cloth from coming into contact with the surface of the rollers; this
soft or yielding substance or material may be used or applied in any other
convenient manner so long as it is arranged to intervene between the endless
wire cloth and the rollers over, under, or round which the wire cloth passes,
whether such rollers be made of metal, glass, or wood.
The Figure in the accompanying Drawing is a longitudinal representation
of that part of a paper making machine to which my Invention is applied.
a, a, a, a, is the endless web of woven wire cloth on to which the paper pulp
is supplied at the right-band end from a suitable reservoir, vat, or trough not
shewn in the Drawing; c is the driving or bottom couch roller to which
power is applied by means of a band round a pulley on the axis of the roller

page_text: for the purpose of actuating or communicating motion to the travelling wire
cloth; and d is the upper couch roller; none of these parts form any part of
my Invention, and are only shewn in the Drawing in order that the mode of
applying my improvements may be more clearly understood. My improve-
ments are applied more particularly to the large roller e near the pulp trough
at the commencement of the machine, and on the surface of which the wire
cloth bears and rubs with considerable friction; this roller I prefer to cover
with india-rubber, but felt or any other suitablo soft and yielding substance
such as those above mentioned, may be employed.
rollers b, b, which maintain the endless wire cloth in a flat and even position,
and also the guide rollers f and g are to be covered in the same manner with
india-rubber, felt, or other soft or yielding substance, as are also the tension
rollers h, h, h. It will be evident that if the surfaces of all the rollers
b, e, f, g, and h are all covered or clothed in the manner already explained, the
wear and tear of the wire will be reduced to a minimum, and will therefore be
made to last very much longer than is now the case.
The small supporting
Having now described my Invention of "Improvements in Paper-making
Machinery," and having explained the manner of carrying the same into
effect, I claim as my Invention the use and application of some soft or
yielding substance, such as felt, india-rubber, or gutta percha, to the supporting,
guide, and tension rollers b, e, f, g, and h, so as to intervene between the end-
less wire cloth and the metallic or hard surfaces over, or under, or round
which the endless wire cloth passes and rubs.
I also claim the interposition between the rollers and the endless wire cloth
of a travelling cloth of felt or some textile fabric, as herein set forth, for
the purpose of preserving the travelling wire cloth from undue wear and
tear.
As a modification of the above I claim making the surfaces or peripheries
of the rollers of some soft or yielding substance, so as to prevent the wire from
being worn out too rapidly.
In witness whereof, I, the said Ebenezer Noah Gregory, have hereunto
set my hand and seal, the Second day of July, in the year of our
Lord One thousand eight hundred and sixty-seven.
REALIZED NOLLY CDECODY
RENTZCD
EBENEZER NOAH GREGORY. (1.S.)