IMPROVEMENTS IN THE PRODUCTION OF COMPOUNDS CAPABLE OF BEING EMPLOYED FOR BLEACHING AND OTHER PURPOSES
Year: 1882

page_text: LETTERS PATENT to James Young, of Kelly in the County of Renfrew
North Britain Esquire for an Invention of "IMPROVEMENTS IN THE
PRODUCTION OF COMPOUNDS CAPABLE OF BEING EMPLOYED FOR BLEACHING
AND OTHER PURPOSES"
PROVISIONAL SPECIFICATION left by the said James Young at the Office
of the Commissioners of Patents on the 10th February 1882.
JAMES YOUNG of Kelly in the County of Renfrew North Britain Esquire
"IMPROVEMENTS IN THE PRODUCTION OF COMPOUNDS CAPABLE OF BEING EMPLOYED
FOR BLEACHING AND OTHER PURPOSES."
My Invention relates to improvements in the production of compounds suitable
for employment for the purposes of effecting the bleaching of fabrics pulp and
other vegetable substances and products and it consists firstly in effecting the
decomposition of a solution of chloride of lime by means of an alkaline sulphate
such for example as sulphate of soda sulphate of potash or sulphate of magnesia
and then after having effected the precipitation of the greater proportion of the
lime as sulphate of lime the residual lime or magnesia existing in solution is
precipitated by means of an alkaline carbonate such for example as carbonate or
bicarbonate of soda the bleaching solution thus obtained will be found to be more
suitable for the purposes of bleaching than when it contains or is contaminated
with Salts of Lime or with salts of the Alkaline Earths.
.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Young in the Great Seal Patent Office on the 10th August
1882.
JAMES YOUNG, of Kelly, in the County of Renfrew, North Britain―" IMPROVE-
MENTS IN THE PRODUCTION OF COMPOUNDS CAPABLE OF BEING EMPLOYED FOR
BLEACHING AND OTHER PURPOSES."
My Invention relates to improvements in the production of compounds suitable
for employment for the purposes of effecting the bleaching of fabrics, pulp and
other vegetable substances and products, and it consists firstly in effecting the
decomposition of a solution of chloride of lime by means of an alkaline sulphate
such for example as sulphate of soda, sulphato of potash, or sulphate of magnesia,
and then after having effected the precipitation of the greater proportion of the
lime as sulphate of lime and in the case where sulphate of soda or potash is used
the residual lime existing in solution is precipitated by means of an alkaline
carbonate or hydrate such for example as carbonate or hydrate of soda. I prefer
carbonate of soda the carbonate or hydrate to be added until limo ceases to be
precipitated. The bleaching solution thus obtained will be found to be more
suitable for the purposes of bleaching than that made directly from bleaching
powder.
Having now described and particularly ascertained the nature of my said
Invention and the system mode or manner in or under which the same is or may
be used or practically carried into effect, I would observe in conclusion that what I
consider to be novel and original-and-therefore-claim as the Invention secured to
me by the hereinbefore in part recited Letters Patent is,
The bleaching solution produced in the manner herein before described.
In witness whereof I the said James Young have hereunto set my hand
and seal this Seventh day of August in the year of our Lord One thousand
eight hundred and eighty two.
HARA