Iм- PROVEMENTS IN THE MODE OF TREATING SKUTCH OR RESIDUUM PRODUCED IN THE MANUFACTURE OF GLUE AND SIZE
Year: 1871

page_text: LETTERS PATENT to Eli Earl Collins, of Upper Grange Road,
Bermondsey, in the County of Surrey, for the Invention of “Iм-
PROVEMENTS IN THE MODE OF TREATING SKUTCH OR RESIDUUM PRODUCED
IN THE MANUFACTURE OF GLUE AND SIZE."
COMPLETE SPECIFICATION filed by the said Eli Earl Collins at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 14th July 1871, pursuant to the 9th Section
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ELI EARL
COLLINS, of Upper Grange Road, Bermondsey, in the County of Surrey,
Gentleman, send greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS
IN THE MODE OF TREATING SKUTCH OR RESIDUUM PRODUCED IN THE MANUFACTURE

page_text: OF GLUE AND SIzs," and have petitioned Her Majesty to grant unto me,
my exccutors, administrators, and assigns, Her Royal Letters Patent
for the same, and have made solemn Declaration that I really believe
myself to be the first and true Inventor thereof.
NOW KNOW YE, that I, the said Eli Earl Collins, do hereby declare
that the following Complete Specification, under my hand and seal,
fully describes and ascertains the nature of the said Invention, and in
what manner the same is to be performed, in and by the following
statement:-
_
My improvements in the mode of treating skutch or residuum pro-
duced in the manufacture of glue and size are,-
First. The glue or size having been run off from the pans, I place
the skutch or residuum in vats or other receptacles containing a
solution of sulphuric acid, or other suitable acid, of sufficient strength
and quantity to convert all the lime contained in the skutch into
sulphate or other precipitate of lime, and yet not of sufficient strength
to destroy, char, or burn the hair or animal fibre contained in the
skutch.
Second. Instead of boiling the skutch as now practised, I allow the
skutch to remain in such solution in such vats or other receptacles
for about a week or ten days, and afterwards separate the hair and
fat therefrom, cither simultaneously or separately, either by pressure,
washing, boiling, or other suitable means.
Third. In separating the hair by boiling I use a cage or perforated
cradle, or other suitable contrivance, to prevent the hair from being
charred or burnt by contact with the sides or bottom of the boiler,
and I take care not to raise the temperature above the boiling point of
water.
Fourth. My improvements consist, first, that by the method I have
described, the hair in the skutch is not burnt, and may be utilized;
second, that the fat produced by my method is improved in colour,
being of a light yellow instead of nearly black, as when produced
by the common process; third, that the skutch when thus treated
does not produce any offensive stench or become tainted in the sepa-

page_text: ration of the fat, and the nuisance arising from the common process
is avoided.
In witness whereof, I, the said Eli Earl Collins, have hereunto set
my hand and seal, this Fourteenth day of July, in the year
of our Lord One thousand eight hundred and seventy-one.
E. E. COLLINS. (L.S.)
Signed, sealed, and delivered by
the above named
Eli Earl
Collins in the presence of
WALTER REGINALD COLLINS,
Clerk to Messrs. Bridger & Collins,
Solicitors,
No. 37, King William Street,
London Bridge.