Year: 1888

page_text: Date of Application, 3rd Sept. 1888
Complete Specification Left, 10th Apr., 1889
Complete Specification Accepted, 8th June, 1889
[Communicated from abroad by GEORGE A. CONANT, formerly of Littleton, but now
of Acton, in the County of Middlesex and Commonwealth of Massachusetts.]
HERBERT EUSTACE HOUNSELL Merchant & Agent of 165 Queen Victoria Street
in the City of London do hereby declare the nature of this invention to be as
follows:-
The invention is a new and useful composition and process for the rapid and
economical manufacture of bluing of superior quality for laundry and other purposes,
by applying the bluing more quickly than it has ever been done before to paper, and
by making it more adhesive to paper and quicker to dissolve in water, and so more
valuable and useful than any other similar preparation, which process is more fully
set forth in the following Specification.
In carrying out the invention, take eight pounds Prussian blue, one pound oxalic
acid, five pounds granulated sugar, eighteen quarts of water, and the desired quantity
of sheets of manila paper of medium thickness.
Dissolve the oxalic acid in fivo quarts cold water, and let it stand over night, or
about 12 hours. Strain the acidulated water and mix with it eight quarts clear water.
Then add the Prussian blue by stirring it in very slowly, and then, after it has stood
an hour or more, strain into another vessel. Then dissolve the sugar in 5 quarts cold
water by stirring both together. Then pour the sirup into the liquid containing the
bluing, and stir the whole thoroughly.
.
Then dip the paper, sheet by sheet, into the preparation, and hang them up to dry,
and when dry cut into sheets of the desired size for packing in envelopes.
I am aware that bluing has before been so prepared as to be made to adhere to
paper and dissolve in water; but it has been done by the slow and costly process of
putting on with a brush some adhesive substance other than sugar to stick the bluing
-some substance less soluable.

page_text: I claim as my invention-
As a new article of manufacture, bluing-paper consisting of paper saturated with a
solution of Prussian blue, oxalic acid, & sugar, in the proportions and substantially as
set forth.
Dated this 31st day of August 1888.
COMPLETE SPECIFICATION.
Improvement in Bluing Preparations for Laundry and similar
Purposes.
HERBERT EUSTACE HOUNSELL of 165 Queen Victoria Street London Merchant
a communication from G. A. Conant 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:-
A composition and process for the rapid and economical manufacture of bluing of
superior quality for laundry and other purposes by applying the bluing more quickly
than it has ever been done before to paper and by making it more adhesive to paper
and quicker to dissolve in water and so more valuable and useful than. any other
similar preparation which process is more fully set set out in the following specification.
In carrying out my invention take eight pounds Prussian blue one pound oxalic acid
five pounds granulated sugar eighteen quarts of water and the desired quantity of
sheets of manilla paper of medium thickness: Dissolve the oxalic acid in five quarts
of cold water and let it stand over night or about 12 hours. Strain the acidulated
water and mix with it eight quarts clear water. Then add the Prussian blue by
stirring it in very slowly & then after it has stood an hour or more strain into another
vessel. Then dissolve the sugar in five quarts of cold water by stirring both together.
Then pour the sirrup into the liquid containing the bluing and stir the whole thoroughly.
Then dip the paper sheet by sheet by sheet into the preparation and hang up to dry
and when dry cut into sheets of the desired size for packing in envelopes. I am
aware that bluing has before been so prepared as to be made to adhere to paper and

page_text: dissolve in water but it has been done by the slow and costly process of putting on
with a brush some adhesive substance other than sugar to stick the bluing-some
substance less soluble.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is
That it is a new article of manufacture of bluing paper consisting of paper saturated
with a solution of Prussian blue oxalic acid and sugar in the proportions and substan-
tially as set forth.