IMPROVED MACHINERY FOR MANUFACTURING PAPER
Year: 1864

page_text: LETTERS PATENT to James Easton, junior, of The Grove, Southwark,
Engineer, and Thomas Leigh, of Cheshunt, in the County of Hertford,
Engineer, for the Invention of "IMPROVED MACHINERY FOR MANUFACTURING
PAPER"
Sealed the 19th July 1864, and dated the 8th February 1864.
PROVISIONAL SPECIFICATION left by the said James Easton and
Thomas Leigh at the Office of the Commissioners of Paients. with their
Petition, on the 8th February 1864.
We, JAMES EASTON, junior, of The Grove. Southwark, Engineer, and
THOMAS LEIGH, of Cheshunt, in the County of Hertford, Engineer, do hereby
MANU-
declare the nature of the said Invention for "IMPROVED MACHINERY FOR
FACTURING PAPER." to be as follows:-
This Invention relates to a novel arrangement of parts for supporting and
operating the table of the paper-making machine to produce the requisite
"shake" for closing or felting the fibres of the pulp as it is flooded onto the
travelling wire cloth. Instead of giving the table a rocking or irregular
compound vertical and longitudinal motion,. we support the frame of the table
by bolts, which pass through links that depend from and are free to rock on
studs carried by standards at the opposite ends of the machine; to one
extremity of this frame we attach a pair of connecting rods, which are operated
by excentrics, and we thereby impart an oscillating endway motion to the
table, maintaining the opposite ends of the table throughout the operation at

page_text: the same relative position with respect to a given horizontal line. For obtain-
ing the greatest available speed of manufacture (that is, felting the fibres of
the pulp), we make the forward end of the table adjustable in height, using for
that purpose pendent links which are adjustable in length, and we are thus
enabled to regulate to the greatest nicety the degree of inclination required
for the table. This mode of supporting the table gives it a tendency to
return to its normal position, and thus in effect a balance action is obtained,
which ensures a smooth and regular motion with an economical expenditure
of power.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Easton and Thomas Leigh in the Great Seal Patent
Office on the 8th August 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JAMES
EASTON, junior, of The Grove, Southwark, Engineer, and THOMAS LEIGH, of
Cheshunt, in the County of Hertford, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighth day of February, in the year of our
Lord One thousand eight hundred and sixty-four, in the twenty-seventh
year of Her reign, did, for Herself, Her heirs and successors, give and grant
unto us, the said James Easton and Thomas Leigh, Her special licence that
we, the said James Easton and Thomas Leigh, our executors, administrators,
and assigns, or such others as we, the said James Easton and Thomas Leigh,
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 "IMPROVED MACHINEIY FOR MANU-
FACTURING PAPER," upon the condition (amongst others) that we, the said
James Easton and Thomas Leigh, by an instrument in writing under our hands
and seals, or under the hand and seal of one of us, 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 Thomas Leigh, on behalf of myself and
of the said James Easton, do hereby declare the nature of our said Inven-

page_text: tion, and in what manner the same 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):-
This Invention relates to a novel arrangement of parts for supporting and
operating the table of the paper-making machine to produce the requisite
"shake" for closing or felting the fibres of the pulp as it is flooded onto the
travelling wire web or cloth.
In the accompanying Drawing, Fig. 1 is a plan view, and Fig. 2 a
longitudinal elevation of a paper-making machine constructed according to
our Invention. Hitherto the table A, which carries the endless wire web and
the other operating parts of the paper machine, has received a rocking or
irregular compound vertical and longitudinal motion from its crank or
excentric shaft by reason of the mode of suspension adopted for the table.
According to our Invention we support the frame of the table in such
manner that when imparting an oscillating endway motion thereto, the
opposite ends of the table will be maintained throughout the operation at the
same relative position with respect to a given horizontal line. To effect this
object we bolt to the opposite sides of the frame of the table A, or cast there-
with, bracket arms B, through the extremities of which bolts or studs C, C,
are passed. These bolts or studs are carried by links D, D*, that depend
from and are free to rock on studs E carried by standards F at the opposite
ends of the machine. To the front extremity of the table frame A we attach
a pair of connecting rods G, which are operated as usual by excentrics on a
transverse shaft H for imparting the oscillating endway motion to the table.
For obtaining the greatest available speed of manufacture (that is, felting the
fibres of the pulp) we make the forward end of the table adjustable in height,
using for that purpose pendent links, which are adjustable in length as shewn
at D, Fig. 2, and we are thereby enabled to regulate to the greatest nicety
the degree of inclination required for the endless web of wire cloth which
receives the fluid pulp from the discharging vessel T.
From the above explanation it will be understood that the table without
the use of balance weights has a tendency, like the ordinary pendulum, to return
to its normal position, we therefore obtain, by our improved mode of
supporting the table, a balance action, which ensures a smooth and regular
motion with an economical expenditure of power. In order to attain the
utmost economy of power, it will be well to ascertain the rate at which the
paper maker desires to drive the machine, and to adapt the length of the
pendulum or swinging links to the given rate of oscillation.

page_text: Having now set forth the nature of our Invention of "Improved Machinery
for Manufacturing Paper," and explained the manner of carrying the same
into effect, we wish it to be understood that under the above in part recited
Letters Patent we claim, the means above described for supporting and
operating the table of paper-making machines.
In witness whereof, I, the said Thomas Leigh, have hereunto set my
hand and seal, the Eighth day of August, in the year of our Lord
One thousand eight hundred and sixty-four.
Witness,
J. W. MOFFATT,
66, Chancery Lane.
THOMAS LEIGH. (..s.)