Improvements in or relating to the Manufacture of Paper.
Year: 1894

page_text: Date of Application, 3rd May, 1894
Complete Specification Left, 4th Feb., 1895-Accepted, 9th Mar., 1895
I, JAMES PORTEUS CORNETT of Claxheugh near Sunderland in the County of
Durham, Paper Mill Manager, do hereby declare the nature of this invention to be
as follows:-
This invention has reference to improvements in or relating to the manufacture
of paper.
As at present constructed the stuff-chests or vats used by the trade for containing
pulp in dilution or suspension are fitted with agitating arms or wings in the form
of frames of wood or iron adapted to revolve or move such apparatus being
employed to agitate circulate and mix the pulp while in the vat but by my inven-
tion I propose to adapt centrifugal pumping apparatus as the agitating circulating
and mixing medium in connection with the stuff-chest or vat and I may apply
such centrifugal. machinery to any form of vat stuff-chest or vessel but the
oblong or oval form such as is used in ordinary "Hollander" beater's or engines
is preferred.
Economy in working and improved results in manufacture may thus accrue.
Dated this 2nd of Nov 1801
A. CRAWHALL CHAPMAN.
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.
COMPLETE SPECIFICATION.
Improvements in or relating to the Manufacture of Paper.
I, JAMES PORTEUS CORNETT, of Claxheugh near Sunderland, in the County
of Durham, Paper Mill Manager, do hereby declare the nature of this 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 has reference to improvements in or relating to the manufacture
of paper.
As at present constructed the stuff-chests or mixing vats used by the trade for
containing pulp in dilution or suspension are fitted with agitating arms or wings in
the form of frames of wood or iron adapted to revolve or move, such apparatus
being employed to agitate circulate and mix the pulp while in the vat but by my
invention I propose to adapt centrifugal pumping apparatus as the agitating circu-
lating and mixing medium in connection with the stuff-chest or vat and I may
apply such centrifugal machinery to any form of vat stuff-chest or vessel but
the oblong or oval form such as is used in ordinary "Hollander" beaters or engines
is preferred.
The invention is alike applicable in paper manufacture to the treatment or
mixing of such kindred materials as china clay, rozin size, bleaching powder or
caustic soda and in all cases economy in working and improved results in manu-
facture will accrue.

page_text: I will fully describe my invention with reference to the accompanying drawings
in which Figures 1 and 2 show plan and side views partly in section and in the
following description like marks of reference designate like parts.
Referring to the drawings A is a stuff-chest or mixing vat with a midfeather A¹
extending to one end of the vat and it will be observed that the vat may be one
of the oblong or oval form such as is used in ordinary "Hollander" beaters or
engines.
The pulp or other equivalent material having been run into the vat, the
centrifugal pump P, having its suction pipe PI connected to the vat at S¹ and its
delivery pipe P adapted to deliver into the vat at S, is started and its action is to
draw the material in the vat round and round the midfeather as indicated by the
arrows whereby the stuff becomes thoroughly agitated and commixed while efficient
circulation is simultaneously obtained.
The vat bottom may be inclined as shown at C C¹ C³ towards the suction pipe P¹.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In the manufacture of paper the combination with a mixing vat stuff-chest or
vessel A having a midfeather A¹ of centrifugal pumping apparatus P having its
suction pipe P connected to the vessel at S₁ on one side of the midfeather and its
delivery pipe P arranged to deliver into the vessel on the other side of the mid-
feather substantially as and for the purposes herein set forth.
2. The combination of vat and midfeather and pumping machinery arranged
constructed and adapted to operate substantially as and for the purposes herein
described and illustrated in the accompanying drawings.
Dated this 2nd day of February 1895.
A. CRAWHALL CHAPMAN,
3, St. Nicholas Buildings, Newcastle-on-Tyne, Patent Agent.