Improvements in the Manufacture of Paper.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Paper.
I, WILLIAM FRIESE-GREENE, of 39, King's Road, Chelsea, in the County of
London, Photographer, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to the manufacture of paper and more particularly
of paper to be used for electrical inkless printing in a manner such as is
described in the Specification of my Patent No. 27243 of 1897.
The invention consists in applying the liquid or solution hereinafter described,
to the paper in the course of the manufacture of the latter. The liquid or solu-
tion may be incorporated with pulp before its manufacture into paper or dis-
tributed, preferably in a state of fine division, upon the layer of pulp when on
the wire web or other "former" before or during the "forming" of the paper,
or upon the paper after it has "formed" and either when still moist.or after it
has become dry.
To manufacture this liquid or solution I take sea water and place therein an
amount of sea weed, say 1 pound to the gallon, and add common or washing soda.
I boil the mixture until the liquor becomes clouded, say for about 25 minutes.
This cloudiness is due to a substance of an alkaline nature in suspension, I then
add, preferably after the liquor has cooled, sufficient acid, hydrochloric by prefer-
ence, to dissolve the clouding matter. I decant off the liquor and add to it
hyposulphite of soda. I thus get the liquid or solution which I incorporate with
paper pulp or distribute over the paper during or after "forming" as herein-
before explained.
Paper thus made will give a permanent dark brown to the print produced.
electrically thereon. The color may be varied by the addition of other substances
to the liquid or solution. For example, by adding nitrate of cobalt, the print
produced will be nearly black and by adding hydroquinone and nitrate of cobalt
the print produced will be jet black.
I have not yet ascertained the exact nature or composition of the liquid or
solution obtained in the manner hereinbefore described nor am I at present certain
as to what ingredient or ingredients of same are effective in electrical inkless
printing; the present invention includes the use of the effective ingredient or
ingredients in the manner described whether produced as hereinbefore described
or in any other way.

page_text: COMPLETE SPECIFICATION.
Improvements in the Manufacture of Paper.
1, WILLIAM FRIESE-GREENE, of 39, King's Road, Chelsea, in the County of
London, Photographer, 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 the manufacture of paper and more particularly
of paper to be used for electrical inkless printing in a manner such as is described
in the Specification of my Patent No. 27,243 of 1897.
"
وو
This present invention consists in applying an extract, liquid or solution of
the character hereinafter described to the paper in the course of the manufacture
of the latter. The extract, liquid or solution may be incorporated with pulp
before its manufacture into paper, or may be distributed, preferably in a state
of fine division, upon the layer of pulp when on the wire web or other " former "..
during the forming of the paper, or upon the paper after it has
formed" and either when still moist or after it has become dry. The said
liquid'or solution is an 'extract of seaweed and is obtained preferably as follows:
I take sea water and place therein an amount of seaweed say 1lb. to the
gallon, and add common washing soda, say lb. per lb. of weed. I boil the
mixture until the liquor becomes clouded, say for about 25 minutes. This cloudi-
ness is due to a substance of an alkaline nature in suspension. I then add,
preferably after the liquor has cooled, sufficient acid, hydrochloric by preference,
to dissolve the clouding matter. I decant off the liquor and add to it hypo-
sulphite of soda in the proportion of say lb. per gallon of decanted liquor. I
thus get the extract, liquor or solution which I incorporate with paper pulp or
distribute over the paper during or after “forming as hereinbefore explained"
""
I prefer in practice to incorporate the extract liquor or solution with the pulp
in the beating engine. A suitable proportion is 5 gallons of the liquid extract
above described to 100 gallons of pulp in the engine. When the liquid or extract
is distributed over the pulp while this is on the "former" the rate of distribu-
tion should be regulated so as to obtain a suitable proportion of extract to pulp,
for example 5 gals. of liquid may be distributed over 100 gals. of pulp run on
to the
former." The proportions above specified are those which I have found
to give the best results in practice but it will be understood that I do not limit
myself thereto
Paper thus made will give a permanent dark-brown impression when sub-
jected to the electric current in electric printing. The color may be varied by
the addition of other substances to the liquid or solution. For example, by
adding nitrate of cobalt, in the proportion of say about oz. per gallon of extract.
the print produced will be nearly black, and by adding hydroquinone anil'
nitrate of cobalt, say oz. nitrate of cobalt and 1 oz. hydroquinone per gallon
of extract, the print produced will be jet-black.
ין
I have not yet ascertained the exact nature or composition of the liquid or
solution obtained in the manner hereinbefore described, nor am I at present
certain as to what ingredient or ingredients of same are effective in electrical'
inkless printing.
'
Having now particularly described and ascertained the nature of my said.
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. The method or process of making paper suitable for electric printing, which
consists in treating naner with an extract of seawood substantially as decoviled

page_text: 2. In the manufacture of paper suitable for electric printing the process which
consists in boiling seaweed in sea water, to which an alkali such as washing
soda has been added, adding acid to the resulting liquor, then separating the
supernatant liquor, adding hyposulphite of soda thereto and adding the resulting
extract to paper, substantially as described.
3. As a new product, paper containing an extract of seaweed for the purpose
described
4. As a new product, paper containing an extract such as is obtained by the
process specified in Claim 2, together with other substances, such for example as
nitrate of cobalt with or without hydroquinone as and for the purposes described.
Dated this 7th day of April 1900.
J. C. MEWBURN & ELLIS,
55 and 56, Chancery Lane, London, W.C.; Chartered Patent Agents..