IMPROVEMENTS IN MACHINERY OR APPARATUS USED IN THE MANUFACTURE OF PAPER
Year: 1882

page_text: LETTERS PATENT to Frederick Wrigley and James Robertson both of Bury
in the County of Lancaster, for an Invention of "IMPROVEMENTS IN MACHINERY
OR APPARATUS USED IN THE MANUFACTURE OF PAPER."
PROVISIONAL SPECIFICATION left by the said Frederick Wrigley' and
James Robertson at the Office of the Commissioners of Patents on the
1st November 1882.
FREDERICK WRIGLEY and JAMES ROBERTSON both of Bury in the County
of Lancaster "IMPROVEMENTS IN MACHINERY OR APPARATUS USED IN THE
MANUFACTURE OF PAPER
"
This Invention, which relates to machinery or apparatus used in the manufacturo
of paper, has reference to the section or class of such apparatus known as the
"jog" knotter or strainer and the Invention has for one of its objects to render the
movement or action of the said knotter or strainer equal over all its surface whereby
the knotter or strainer plates are caused to wear equally and to pass a larger
quantity of pulp.
The Invention has also for its object to extract surplus water from the pulp after
it has been strained and before it reaches the machine wires thereby lessening the
tear and wear on the said wires and enabling them to last much longer.
The improved strainer consists of the ordinary vat and strainer plate frame the
said vat being mounted on vertical standards. Underneath tho vat a shaft is
placed horizontally on which are carried stepped cams or tappets, eccentrics or
their equivalents and a driving pulley by which motion is communicated to the
shaft from any suitable prime mover. The shaft is supported at or near each end
in bearings fixed in boxes which latter are connected together by a pipe or tube
through which the shaft passes. The boxes and the tube thus forin ono continuous
chamber in which the principal moving parts are situated and the chamber is filled
with oil, tar or other lubricant.
The strainer plate frame is supported by vertical rods whose lower ends are in
contact with the stepped cams tappets, or eccentrics and a rigid connection between
the said rods and the frame is effected by a cottar or key.

page_text: The plate frame is hinged at one side so as to enable it to be raised or tilted up
in the usual manner and the said frame rests on a pad secured to the edge of the
vat underneath the connection to the vertical rods
The amount of "jog" to be given to the frame is regulated by a wedge which is
capable of being adjusted in a horizontal plane by means of screws and retained in
the desired position by bolts and nuts or their equivalents.
By this construction and means of operation the whole surface of the strainer
plate is available for straining the pulp, the tear and wear is reduced to a
minimum and the apparatus is practically noiseless.
The pulp on leaving the vat, and on its course to the machine wires passes down
an inclined plane covered with wire cloth of the required fineness in passing over
which it parts with the surplus water and falls into a breast box from whence it
passes to the wires in the usual manner whilst the extracted water flows into a
separate box or tank and may be drawn off at the front or back of the machine as
desired.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Frederick Wrigley and James Robertson in the Great Seal Patent
Office on the 1st February 1883.
FREDERICK WRIGLEY and JAMES ROBERTSON both of Bury in the County
of Lancaster. IMPROVEMENTS IN MACHINERY OR APPARATUS USED IN THE
MANUFACTURE OF PAPER.
Our said Invention, which relates to machinery or apparatus used in the
manufacture of paper, has reference to tho section or class of such apparatus known
as the "jog" knotter or strainer and the Invention has for one of its objects to
render the movement or action of the said knotter or strainer equal over all its
surface, whereby the slits are prevented from filling up, and the knotter or strainer
plates are worn evenly and equally and therefore pass a larger quantity of pulp
in relation to the gauge of plate or sieve used.
The Invention has also for its object to extract surplus water from the pulp after
it has been strained and before it reaches the paper making machine wires thereby
lessening the tear and wear on the said wires and causing them to last much
longer.
16
And in order that our said Invention may be properly understood we now
procced more particularly to describe the system, inode or manner in, or under
which it is, or may be used or carried out in practice, reference being had to the
annexed drawing, and to the Letters and Figures marked theroon, that is to say.
On the sheet of drawings hereunto appended Figure 1, is a longitudinal section
and Figure 2, a part end elevation and part transverse section of the improved
jog "knotter or strainer constructed in accordance with our said Invention and
as shewn by these figures the improved knotter or strainer consists of the ordinary
vat A, and strainer plate frame B, the said vat being mounted on vertical standards
or frames C. Underneath the vat A, a shaft D, is placed horizontally on which
are keyed stepped cams or tappets E, and a driving pulley F, by a belt passed
round which motion is communicated to the shaft D, from any suitable prime
mover or instead of the stepped tappets or cams E, eccentrics, cranks or other
equivalents may be used.
This action may be communicated also from a shaft or shafts working either above
or below or at the side of the strainer: but we prefer the arrangement as shown
on the drawing and stated above, the principle being the same in all, that is to
say, the rapid and simultaneous perpendicular jog, or action given to the whole
surface of the knotter or strainer.
"
At or near each end the shaft D, is supported in brass or other suitable
bearings a, securely fixed in boxes G, which latter are connected together by a pipe
or tube H, through which the shaft D, passes. The boxes G, and the pipe or tube H,
thus form one continuous chamber containing the principal moving parts of the
apparatus and as the chamber, is filled with Oil tar or other equivalent lubricant,
the friction tear and wear on these parts is reduced to a minimum.
The strainer plate frame B, is supported by vertical rods J, whose lower ends are
in contact with the stepped cams or tappets E, a rigid connection between the
frame and the rods J, being effected by the cotters or keys K, whilst the said rods
are at the same time free to move vertically through the sleeves or guides L.
The strainer plate frame B, is hinged at M, and the horns or brackets O, by which
the frame is attached to the vertical rods J, are each formed with a slot as
indicated at c, figure 2, so that on withdrawing the cotters or keys K, the frame
may be tilted or raised up in the usual manner.
When in the position shewn on the drawings the frame B, may fall on or "jog "
ngainst pads fixed to the flange of the vat A, underneath the horns or brackets O,
or, and as is preferred, it may drop upon the upper ends of the two top guides L,
and the amount of "jog" given to the said knotter or strainer plate frame is

page_text: regulated by wedges P, on which the boxes G, are carried. The wedges P, are
capable of being moved in a horizontal plane by the screws R and when the "jog"
has been regulated they are securely fixed in position by the screw bolts S.
By constructing and operating the. "jog" knotter or strainer substantially as
herein before described the whole surface of the strainer plates is available for
straining the pulp, the tear and wear on the moving parts is reduced to a
minimum, and the apparatus is practically noiseless
Our improved mode of action as hereinbefore described also permits of an increase
in the number of jogs per minute far in excess of anything hitherto produced each
jog still being distinct, and separate therefore, as each distinct jog passes a certain
quantity of stuff, it naturally follows that the efficacy of the strainer relatively to
the area of the plates or sieves employed is greatly increased and the space required
for strainer surface is less in proportion to the work done than in the case of any
other machine of a similar class.
The pulp on leaving the vat A, and on its course to the machine wires flows in
the direction of the arrows figure 2, over the surface T, to the inclined frame T',
which is perforated or covered with wire cloth of any required degree of fineness
in passing down which the pulp parts with the surplus water and then falls into
the breast box U, from whence it passes to the wires in the usual manner.
The surplus water extracted from the pulp on the inclined frame T', falls into
the box or tank V, and may be drawn off as desired.
Having now described and particularly ascertained the nature of our said
Invention and the manner of carrying it into practical effect what we desire to
claim and secure by Letters Patent is
First. The combination and arrangement of apparatus whereby an amount of
perpendicular jog, adjustable at pleasure is communicated to the knotter or
strainer frames used in the manufacture of paper wood pulp and other kindred
industries and whereby the whole knotter or strainer frame is raised and dropped,
the action-and-reaction being respectively rendered equal over all the straining
surface substantially as hereinbefore described.
Second. The combination and arrangement of the continuous chamber G, H
substantially as described and shown on the drawings whereby the principal
working parts are kept continually lubricated, and noise and wear and tear are
diminished.
Third. The improved method of altering the amount of jog or action by means
of the inclined planes and wedges P.
Fourth. In conjunction with knotters and strainers for paper pulp the
combination and arrangement of apparatus for extracting the surplus water after
the pulp has been strained substantially as hereinbeforo described and shown at
figuie 2 of the appended drawings.
In Witness Whereof wo the said Frederick Wrigley and James Robertson
have hereunto set our hands and seals this twenty fourth day of January
in the year of our Lord One thousand eight hundred and eighty three.
Signed sealed and delivered by the before
named Frederick Wrigley and James
Robertson in the presence of
SAM
WOODCOCK
Solicitor Bury Lancashire
FREDERICK WRIGLEY. (L.S.)
JAMES ROBERTSON (I..S.)