Improvements in Machinery or Apparatus for the Manufacture of Press Papers, Glazed Boards, and the like.
Year: 1891

page_text: Date of Application, 20th Nov., 1891
Complete Specification Left, 6th Feb., 1892-Accepted, 12th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for the Manufacture of
Press Papers, Glazed Boards, and the like.
I, THOMAS LUMB, of Skyreholme Mills near Skipton, in the County of York,
Paper Manufacturer, do hereby declare the nature of this invention to be as
follows:
This invention of improvements in machinery or apparatus for the manufacture
of press papers, glazed boards and the like consists of a receptacle with suitable
compartments into one of which pulp is delivered by means of a pump or otherwise
from a pulping machine, water also being supplied thereto causing the pulp to
float, a sluice is provided for regulating the required quantity of pulp to pass out
and into a vat, (surplus pulp and water being allowed to pass out by a waste pipe
and return to the pulping machine.
Between the abovenamed vat and another alongside of it a communication is
formed at a suitable part for admitting water to the pulp, mixing therewith and
causing it to flow lengthwise of said vat and also to pass downward and beneath
its lower edge or an opening or openings provided at such part and leading to
another compartment up which it flows, and out at a convenient part into a screen
called a
"knotter" which comprises a fine meshed grate to which is imparted
a rapid shaking or jigging motion from a rotating shaft and cams provided
therefor.
The pulp and water having passed through the knotter flows over the upper
edge of the tank in which the said knotter or screen is placed, then downward
through a duct provided therefor, in connection with which is a float for the escape
of surplus water. The pulp and water then pass upward and over the edge of a
vat and presented by means of a circular formed bed beneath and near to the
periphery of a cylinder which I call a "mould" and which cylinder is covered
with a series of woven wire sheets, the first being somewhat coarse in the mesh and
the last or outside one of very fine mesh. From the interior of this wire covered
cylinder a constant suction is taking place drawing water through the woven wire
circumference thus causing the pulp to be deposited thereon. Above this mould
is another cylinder called a " couch
so mounted that it bears upon the "mould "
with some degree of pressure. Around this "couch" and intervening between it
and the "mould and passing over and between a series of other rollers with
means of tightening the same, is an endless sleet of felt, this takes from the
"mould "the newly formed paper passing it while upon the said felt over carrying
rollers and between pressing rollers and finally placing it in a pulpy state upon a
roller the circumference of which forms the size of the sheet in one direction.
is now stripped from the said roller by an attendant after which it is pressed and
otherwise finished.
23
دو
Dated this Nineteenth day of November 1891.
It
THOS. E. CRAVEN,
For the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery or Apparatus for the Manufacture of
Press Papers, Glazed Boards, and the like.
I, THOMAS LUMB of Skyreholme Mills, near Skipton, in the County of York,
Paper Manufacturer, do hereby declare the nature of my said invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invention of improvements in machinery or apparatus for the manufacture
of press papers, glazed boards and the like, consists of a receptacle divided into
suitable compartments into one of which pulp is delivered by means of a pump or
otherwise from what is known as a "stuff" chest " which is supplied from a pulping
machine. Water also being supplied to the said receptacle for causing the pulp to
flow freely. A sluice is provided in the receptacle for regulating the outflow of
pulp in proper quantity which passes into a vat. Surplus pulp and water being
allowed to pass out of the before named receptacle by means of a waste pipe and
return to the said pulp or stuff chest. Between the above named vat and a similar
one alongside of it, a communication is formed at a suitable part for admitting
water to the pulp, mixing therewith and causing it to flow lengthwise of said
vat and also to pass downwards and beneath its lower edge or an opening or
openings provided at such part and leading to another compartment up which it
flows and out at a convenient part into a screen called a "knotter" which comprises
a fine meshed grate to which is imparted a rapidly shaking or jigging motion, a
rotating shaft and cams provided therefor :-The pulp and water having passed
through the knotter flows over the upper edge of the tank in which the said
knotter or screen is mounted, then downwards through a duct provided therefor in
connection with which is a float that regulates the escape of surplus water at this
part. The pulp and water then pass upwards and over the edge of a vat and
become presented by means of a circularly formed concave bed beneath and near
to the periphery of a cylinder which I call a "mould," and which cylinder is
covered with a series of woven wire sheets, the first being somewhat coarse in the
mesh and the last or outside one of very fine mesh. From the interior of this wire
covered cylinder a constant suction is taking place drawing water through the
woven wire circumference thus causing the pulp to be deposited thereon for
forming the required sheet of paper. Above this "mould " is another cylinder
called a couch so mounted that it bears upon the "mould" with some degree of
pressure, to wit:-its own weight. Around this couch and intervening between it
and the "mould" and passing over and between a series of other rollers with
means of tightening the same, is an endless sheet of felt or its equivalent, this takes
from the "mould the newly formed paper passing it while upon the said sheet
over carrying rollers and between pressing rollers and finally depositing it in a
pulpy state upon a grooved wooden roller the circumference of which forms the
size of the intended sheet in one direction. It is now stripped from the said roller
by an attendant after which it is pressed and otherwise finished.
In the accompanying drawings
Fig. 1 Sheet 1 is a side elevation of about half of the machine to the line 1. 1.
Fig. 2 Sheet 2 is a side elevation of the other portion of the machine from the
line 1. 1.
Fig. 3 Sheet 3. is a plan of that part of the machine shewn in elevation in
Fig. 1 Sheet 1 and
Fig. 4 Sheet 4 is a plan of the other portion of the machine shewn in elevation
in Fig. 3 Sheet 3.
Fig. 5 is a transverse vertical section at the line 2. 2. of part of Fig. 3 and
Fig. 6 is a detached figure showing bell ringing mechanism hereinafter
referred to.
Similar letters and numerals refer to like parts wherever they occur.

page_text: a to b Figs. 1 and 3 represent the first portion of the machine comprising specially
arranged vats and tanks constructed preferably of wood. b to c Figs. 2 and 4
represent the rear part of the machine consisting of suitable framework adapted to
receive the necessary mechanism shown. d is the feed pipe from a pump or other
apparatus for supplying pulp from a stuff' chest to a compartment e in what I will
call a distribution box f, (shewn in sectional clevation in Fig. 5) water being
supplied thereto as previously referred to and mixing with such pulp in e, enabling
it to flow through the opening 1 such opening being capable of regulation in
width by a plate or sluice 2 in order to admit the proper quantity of pulp to the
machine which passes as indicated by the arrow in f1, through the opening 3 for
producing the desired press or other papers. Surplus pulp supplied to the said
compartment e passes through the opening f4 into the section f5 from which it
returns by the waste pipe f6 to the said stuff chest and is again pumped up into
the distribution box f. The vat g Figs. 1 and 3 is supplied with water by a centri-
fugal pump, and from which other parts of the machine are supplied through the
sluice h. Pulp and water on passing through the opening f1 and out at the bottom
as shewn enters the vat i. Figs. and 3. also in said figs, is another vat, a
communication being formed between i and ; admitting more water to the pulp,
mixing therewith and causing a lengthwise flow in the vat i, as previously men-
tioned. The pulp and water next ascend into the vat j and pass by means of a
spout k, into a screen 1, which I call a knotter, this is mounted on trunnions m, and
is continually agitated by cams n on the shaft o, operated by the pulley p from any
convenient motor. The said knotter is for separating knots or hard substances
from the pulp, the fine portion and water passing through as arrow shows into the
mixer y in which it becomes thoroughly homogeneous after which it passes over a
kind of dam r, descending the vat 1 and continuing to flow as indicated by the
arrows, over another dam or partitions then under another partition t1, on to a
concave circular bed u above which is caused to rotate a cylinder v which I call
a "mould," the periphery of this mould comprises a series of woven wire sheets
commencing with a somewhat coarse mesh while the outside course is of very fine
mesh. In connection with the interior of the said mould and outside the main
tank at this part on each side are additional or supplementary tanks w w joined by
a pipe x 1. In these additional or supplementary tanks w, are openings y and being
in connection with the said continuously rotating centrifugal pump a or other
exhauster, cause a constant suction to take place within the mould and thus to draw
or cause the pulp to be deposited upon the wired periphery thereof and to form the
required sheet of paper or a part thereof. The water thus drawn by the centrifugal
pump or exhauster is returned to the first named vat g, as shown and used over
again. The quantity of water in the vicinity of the concave bed u, is regulated by
a float z, and valve 1, removing part therefrom which may run to waste. A, is
the couch mounted on arms B, attached to the principal framework C, at B 1 and
is capable of adjustment in position in relation to the mould v, as shown. The
couch A carries an endless sheet of felt E, (or its equivalent) which intervenes
between it and the mould and turns the latter and during their contact the pulp or
partly formed sheet of paper is transferred to the said endless sheet E and carried
over supporting rollers F, G, and H, and deposited upon a one grooved wooden
roller I, under pressure of the weighted levers J, rods K and levers L upon the
main roller M, this being driven by the pulleys N, pinion O, and wheel P. The
partly formed sheet of paper being now upon the roller I, and in a soft state is
acted upon by an india rubber covered roller Q, as shown for removing marks
imparted thereto by the endless sheet E. Pulp continuing to be deposited upon the
grooved roller I, until sufficient be placed thereon for forming the desired sheet,
this causes the roller I, to rise and come into contact with the bell ringing
mechanism as shown detached in Fig. 6, when the attendant runs a skewer or other
instrument along the groove in the roller I thus parting and removing the newly
formed sheet for pressing or otherwise finishing. The machine continuing running
other sheets continue to be formed as described.

page_text: The endless sheet of felt after depositing the pulp upon the roller I, passes
downwards from the main roller M under the roller R, over a roller S, under an
adjustable roller T, with means for maintaining the proper tension of the same,
then over rollers U, V, under W, and upwards and between pressing rollers X. Y,
for removing moisture therefrom and under roller Z2, to the couch. A perforated
spout A. 1. is provided for sprinkling the endless sheet with water just before it
passes under the roller W. A. 2. is a rotating dasher for the removal of part
moisture from the endless sheet. A 3, is a roller adjustable towards and for placing
said endless sheet as it travels closer to the dasher as may be desired. A 4 is a
slice for catching water dripping from the couch and preventing its passing over
the back of the mould, but for delivering the same into the additional tanks w.
Having now particularly described and ascertained, the nature of my said inven-
tion and in what manner the same is to be perforined I declare that what I
claim is
1. In machinery, or apparatus for the manufacture of press papers, glazed boards
and the like. The use of a receptacle or distribution box substantially as herein-
above described and shown for the purpose specified.
2. In machinery or apparatus for the manufacture of press papers, glazed boards
and the like. The use of the wooden tanks from a to b, and their divisions into.
various compartments substantially as described and illustrated for the purposes
herein set forth.
3. In machinery or apparatus for the manufacture of press papers, glazed boards
and the like. The framework C from 6 to c, with provision for carrying the main
.driving gear, pressing and other rollers and details substantially as herein shewn
for the purposes specified.
4. In machinery or apparatus for the manufacture of press papers, glazed boards
and the like. The use of the vats i and j, for causing the pulp and water to flow
lengthwise in i, and to descend therein and to ascend in j, and to pass by the spout &
into the knotter / substantially for the purpose specified.
5. In machinery or apparatus for the manufacture of press papers, glazed boards
and the like. The use of the knotter 1, and the method of agitating the same by
cams n on the rotating shaft o substantially as described and shown in the drawings
annexed.
6. In machinery or apparatus for the manufacture of press papers, glazed boards
and the like. The use of the tank g, beneath the knotter in which the sifted pulp
and water become thoroughly mixed, and by the continued supply of pulp and
water through the knotter causing the mixed pulp and water to flow over the dam,
into the vatr 1, to descend therein and pass forwards into the vat r2, and over the
dams to the vat t and then beneath the barrier t 1 to the concave bed u substantially
as indicated by the directing arrows on the drawings annexed for the purpose
specified.
7. In machinery or apparatus for the manufacture of press papers glazed boards
and the like. The use in combination with the part of the main tank at t and their
connection therewith, of additional tanks w. w. connecting the said tanks w. w.
by a tube x 1, so as to become one, also the use of a hollow rotating cylinder called
a "mould" with open ends whose periphery is covered with a series of woven wire
sheets of various sizes of mesh in suchwise that water can pass through such
periphery; and the use of a continuously acting centrifugal or other exhausting
pump for withdrawing water from the interior of the said "mould" thereby
causing a continual suction through the meshed periphery by which pulp is drawn
to and adheres thereto, thus forming the beginning of a sheet of paper, substantially
as described for the purpose specified.
8. In machinery or apparatus for the manufacture of press papers, glazed boards
and the like. In connection with the tanks w, w, the use of float and valve z i
for allowing escape of surplus water therefrom substantially as described and
shown.

page_text: 66
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9. In machinery or apparatus for the manufacture of press papers, glazed boards
and the like. The use above the mould referred to in Claim 7 and bearing thereon
by its own weight, of a cylinder A called a "couch mounted upon radial arms,
means for adjusting the position of the said couch in relation to the said "mould,'
around the couch and intervening between it and the mould, an endless sheet of
felt E, which is continually travelling in such wise as to impart rotary motion to the
mould," the transference at the point of contact of the endless felt sheet with the
mould of the partially formed sheet of paper from the mould to the said endless
sheet, carrying the same over supporting rollers F, G and H, and depositing it upon
a wooden roller I, having a longitudinal groove in its periphery and subjecting it
to pressure upon the main roll M, driven by the pulleys N and gearing O, P. During
the deposition of the partially formed paper upon the said roller it is subjected to a
gentle pressure by an india rubber covered roller Q, for the removal of marks left
by the endless sheet, the said deposition of material upon the roller causing it to
rise in its housings and agitate bell ringing mechanism notifying to an attendant to
remove the sheet therefrom, substantially as hereinabove described for the purposes
specified.
10. In machinery or apparatus for the manufacture of press papers, glazed boards
and the like. The passing of the endless sheet of felt E from the main roller M, to
the roller R, over roller S, to an adjustable tension adparatus r 1 thence over
rollers u, v under to the pressure rollers X, Y, removing surplus water there-
from, then under 2, back to the couch A, substantially as described and shown.
11. In combination with the endless sheet E a continuously revolving dasher A 2,
and means for causing the said sheet to approach the said dasher for the purpose
specified.
12. The use of a trough of water A 1 with a perforated bottom for sprinkling the
endless sheet of felt previous to its contact with the dasher substantially as
described and shown.
13. In proximity to the inner part of the couch's periphery the use of a slice A 4,
for receiving water that drips from the couch and conveying it to one or both of
the additional tanks w, w, substantially as described and shown.
14. The improved machinery or apparatus for the manufacture of press papers,
glazed boards and the like constructed arranged and operating substantially as
described and illustrated.
Dated this Fifth day of February 1892.
THOMAS EDWIN CRAVEN,
For the Applicant.