IMPROVEMENTS IN WEIGHTING AND STRENGTHENING SILKS
Year: 1879

page_text: LETTERS PATENT to Thomas Hawley, of Coventry, in the County of Warwick,
Silk Dyer, for the Invention of "IMPROVEMENTS IN WEIGHTING AND
STRENGTHENING SILKS."
Sealed the 18th April 1879, and dated the 8th January 1879.
PROVISIONAL SPECIFICATION left by the said Thomas Hawley at the Office
of the Commissioners of Patents on the 8th January 1879.
THOMAS HAWLEY, of Coventry, in the County of Warwick, Silk Dyer.
PROVEMENTS IN WEIGHTING AND STRENGTHENING SILKS."
"IM-
This Invention has reference to a former Invention for "Improvements in
Weighting and Finishing Silks," for which Letters Patent have been lately granted
to me, dated the 21st day of June 1878, and the object of the present application is
to more clearly define the relative quantities of the component parts constituting
the mixture proposed to be used for the purposes explained in my former Patent,
and to give such further information as to the successful carrying out of the process
therein claimed, as the further results of my experiments enable me to give.
13
I find then that the ingredients best suited for my purpose are "Duncan & Co.'s'
No. 1 crystal sugar, and "Nelson, Dale, & Co.'s" No. 3 flake gelatine; and that to
obtain the best results the gelatine should be dissolved at a temperature of about 170
degrees. After the sugar is in solution the two are mixed together and applied to
the silk at a specific gravity, varying according to the weight and lustre required;
as will be readily understood the quality of the silk, and sometimes the nature of
the dye upon the silk, obliges different proportions of the mixture to be applied, and
thus this necessarily varies. It may range indeed from 28 ounces of gelatine to
64 ounces of gelatine to the cwt. of sugar, but my experiments prove that the best
results are obtained with a mixture consisting of forty four ounces of gelatine to
1 cwt. of sugar.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Hawley in the Great Seal Patent Office on the 8th July
1879.
"
THOMAS HAWLEY, of Coventry, in the County of Warwick, Silk Dyer. IM-
PROVEMENTS IN WEIGHTING AND STRENGTHENING SILKS."
This Invention has reference to a former Invention for "Improvements in
Weighting and Finishing Silks," for which Letters Patent have been lately granted
to me, dated the Twenty fourth day of June, One thousand eight hundred and
seventy eight, and the ebject of the present application is to more clearly define the
relative quantities of the component parts constituting the mixture proposed to be
used for the purposes explained in my former Patent, and to give such further
information as to the successful carrying out of the process therein claimed as the
further results of my experiments enable me.
I find then that the ingredients best suited for my purpose are Duncan & Co.'s
No. 1 crystal sugar, and Nelson, Dale, & Co.'s No. 3 Hake gelatine; and that to
obtain the best results the gelatine should be dissolved at a temperature of about
one hundred and seventy degrees. After the sugar is in solution the two are mixed
together and applied to the silk at a specific gravity, varying according to the
weight and lustre required. As will be readily understood the quality of the silk,
and sometimes the nature of the dye upon the silk obliges different proportions of
the mixture to be applied, and thus these proportions necessarily vary. The
mixture employed for the purposes of my Invention may range indeed from twenty
eight ounces of gelatine to sixty four ounces of gelatine to the hundredweight of
sugar, but my experiments prove that the best results are obtained with a mixture
consisting of forty four ounces of gelatine to one hundredweight of sugar.
Having now described the nature of my said Invention, and the manner in
which the same is or inay be performed, I desire it to be understood that without
limiting myself to the precise details herein before mentioned, I claim as the
Invention to be protected by the hereinbefore in part recited Letters Patent, the use
or employment of gelatine and sugar for weighting and strengthening silks in the
proportions and quantities herein explained, the gelatine being previously dissolved,
and being then applied with the sugar, substantially in the manner heroinbefore set
forth and described.
In witness whereof, I, the said Thomas Hawley, havo hereunto set my hand
and seal, this Second day of July, in the year of our Lord One thousand
eight hundred and seventy nine.
THOMAS HAWLEY. (L.S.)