IMPROVEMENTS IN MACHINERY FOR PULPING AND GRINDING FIBROUS AND OTHER MATERIALS
Year: 1878

page_text: LETTERS PATENT to James Cooke, of Richmond, in the County of York, Paper
Manufacturer, Charles Edward Brunskill Cooke, of 13, Old Square, Lincoln's
Inn, London, Barrister-at-Law, and George Hibbert, of Richmond, in the
County of York, Engineer, for the Invention of "IMPROVEMENTS IN MACHINERY
FOR PULPING AND GRINDING FIBROUS AND OTHER MATERIALS."
"
Sealed the 10th April 1879, and dated the 14th October 1878.
PROVISIONAL SPECIFICATION left by the said James Cooke, Charles Edward
Brunskill Cooke, and George Hibbert at the Office of the Commissioners of
Patents on the 14th October 1878.
JAMES COOKE, of Richmond, in the County of York, Paper Manufacturer,
CHARLES EDWARD BRUNSKILL COOKE, of 13, Old Square, Lincoln's Inn, London,
Barrister-at-Law, and GEORGE HIBBERT, of Richmond, in the County of York,
Engineer. "IMPROVEMENTS IN MACHINERY FOR PULPING AND GRINDING FIBROUS
AND OTHER MATERIALS."
This Invention consists of certain improved arrangements of apparatus and
machinery for washing, beating, pulping, grinding, ragging, disintegrating, shredding,
mixing, or preparing the various materials and fibrous substances used for making
paper pulp and for other like purposes, or for grinding colours, dyes, paints, and
other materials. The machinery or apparatus consists of a cistern or shell made of
wood, stone, or cast iron, and either round, oblong, oval, or other suitable shape; in
this cistern or shell is placed a conical or other shaped roll or rolls of steel, iron,
bronze, brass, wood, or other materials, and bars of suitable materials may be fixed
in the same; the spindle of the roll is made of iron, steel, or other metal, and under
the roll or rolls is placed a concave serrated plate or plates made of any of the abovo
materials which may be raised or lowered by one or more hydraulic rams, or by
means of screws or otherwise. On the back of the conical or other shaped roll or
rolls we place a series of centrifugal lifters to elevate the materials or substances
under treatment, and to cause a constant circulation in the cistern or shell, or the
circulation may be produced by other agents.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Cooke, Charles Edward Brunskill Cooke, and George Hibbert
in the Great Seal Patent Office on the 12th April 1879.
JAMES COOKE, of Richmond, in the County of York, Paper Manufacturer,
CHARLES EDWARD BRUNSKILL COOKE, of 13, Old Square, Lincoln's Inn, London,
Barrister-at-Law, and GEORGE HIBBERT, of Richmond, in the County of York,
Engineer. "IMPROVEMENTS IN MACHINERY FOR PULPING AND GRINDING FIBROUS
AND OTHER MATERIALS."
This Invention consists of certain improved arrangements of apparatus and
machinery for washing, beating, pulping, grinding, ragging, disintegrating, shredding,
mixing, or preparing the various materials and fibrous substances used for making
paper pulp, and for other like purposes, or for grinding colours, dyes, paints, and
other materials.
And in order that our Invention may be fully understood, we will describe the
accompanying two Sheets of Drawings:-Fig. 1 is a side elevation, Fig. 2 a plan,
Fig. 3 an end elevation of our improved machinery for pulping and grinding
fibrous and other materials, and Fig. 4 an enlarged view of part of the same; a is
the cistern or shell which is made of cast iron or other suitable material, and either
oblong or of other convenient shape; b is the roll or disc plate made of cast iron or
other metal, and c are the bars or facings which we make of chilled iron, bronze, or
other metal, and fix on to the roll or disc plate by bolts or rings. The roll or disc
plate b is keyed on the axle b', which revolves in bearings attached to the cistern
or trough a. We fix similar bars or facings m on to the cistern in front of the
roll or disc plate, and at the requisite distance from it to ensure the pulp or other
material being thoroughly ground. ff, are centrifugal lifters which are fixed to the
outer rim of the roll or disc plate. In performing our Invention, the rags, pulp, or
other materials to be operated upon are fed into the cistern a, and the roll or disc
plate b, in revolving, draws the materials between the bars or facings c and the
facings m. After passing between the facings c and m, the lifters ƒ cause the
material to circulate round the cistern a, until the pulping or grinding operation is
complete.
Another mode of performing our Invention, shewn on Sheet 2, is by using discs
or rolls with a taper surface, and bevelled on the smaller edge, on which discs or
rolls are fixed bars or facings, and also lifters to cause the circulation as before
described. Similar bars or facings are placed under the disc or roll, and extend
partially round it. These bars or facings may be made to approach or recede from
the roll by hydraulic rams or other means.
Fig. 5 is a side elevation; Fig. 6, a plan, and Fig. 7, an end view in section. kis
the roll or disc; 1 are the bars or facings fixed on the roll or disc; p, p, are the
lifters, and n the bars or facings fixed to or forming the segment under the roll k.
o, o, are the hydraulic rams by which the segment n is moved nearer to or further
from the roll or disc k. Screws or other equivalents may be used instead of the
hydraulic rams shewn for varying the position of the segment n. The rolls and
lifters act in the manner before described, to pulp or grind the materials in the
cistern, and to cause a circulation therein.
Having thus stated the nature of our Invention, and described the manner of
performing the same, we wish to remark that we do not intend to limit ourselves to
the details given, as the same may be varied or modified according to the nature of
the material to be operated upon.
We claim, First. The use of a revolving roll or disc with bars or facings on its
circumference, acting in combination with fixed bars or facings for pulping or
grinding fibrous and other materials as shewn and described.
Secondly. The use of hydraulic rams or other equivalents, for regulating the
distance between the revolving and the fixed bars or facings as shewn and described,
and,

page_text: Lastly. The centrifugal or wing lifters fixed to the revolving roll or disc, to cause
a circulation in the cistern, as shewn and described.
In witness whereof, I, the said George Hibbert, for myself and on behalf of
the within-named James Cooke and Charles Edward Brunskill Cooke, have
hereunto set my hand and seal, this Eighth day of April, One thousand
eight hundred and seventy-nine.
GEORGE HIBBERT. (L.S.)