IMPROVEMENTS IN THE TREATMENT OF LEATHER
Year: 1884

page_text: I WILLIAM GUEST of number 21 Clifton Road, New Cross, London, S.E. in
the County of Kent, Carpenter, do hereby declare the nature of my Invention
for IMPROVEMENTS IN THE TREATMENT OF LEATHER to be as follows:-
The object of my invention is to so alter the condition, character, or quality of
leather which has already been tanned in the usual way, as to render it more
durable, more supple or flexible, as also tougher and stronger, than it otherwise
would be if used in its normal condition; and, at the same time to render it
thoroughly impermeable to the action of water, oil, and the like.
These results I effect by means of the following treatment and modus operandi,
that is to say: The leather to be operated upon is first brought to a suitable
temperature, and while still in a heated state, placed in a convenient vessel or
receptacle which contains an impregnating compound maintained in a heated fluid
state, and consisting of animal; vegetable, or mineral wax, (or a mixture of these
latter), bitumenous material and sulphurised oil.
The leather under treatment according to my invention, after having remained
sufficiently long in the above named vessel or receptacle to become thoroughly
charged or saturated with the impregnating compound, is finally subjected to the
necessary smoothing process under rollers or equivalent mechanism, to render it in
a condition fit and adapted for immediate use.
The proportions of the several ingredients forming the impregnating compound
must depend, as will be apparent, upon the description or kind of leather operated
upon with a view to the particular intended application or use to which it is to be
put, as will be hereinafter defined more fully in my Complete Specification of this
my said Invention. Similarly also the modus operandi in certain cases may be
varied from that hereinbefore described, accordingly as the leather may be in the
form of hides or skins, or, in pieces. So also in the case of very thin leather, it
will be found more convenient and when the same is in a heated state, to charge it
with the impregnating compound, by surface application.
I likewise find in certain cases (according to the nature of the tanning process to
which it has been subjected) that the adaptability of the leather to undergo the
impregnating process, may be facilitated by subjecting the leather, previously, to
the action of certain chemicals, as will be more fully defined in the complete
Specification of this my said invention.
Dated this Fourteenth day of February 1884

page_text: .
I WILLIAM GUEST of 21 Clifton Road, New Cross, London, S.E in the
County of Kent, Carpenter, do hereby declare the nature of my Invention for
IMPROVEMENTS IN THE TREATMENT OF LEATHER, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
The object of my invention is to so alter the condition, character or quality of
leather which has already been tanned in the usual way, as to render it more
durable and supple or flexible; tougher and stronger than it otherwise would be
if used in its normal; condition; and, at the same time to render it thoroughly
impermeable to the action of water, oil or other fluids. These results I effect by
means of the following treatment and modus operandi: that is to say. The
leather to be operated upon is first brought to a suitable temperature, and while
still in a heated state is placed in a convenient vessel or receptacle which contains
an impregnating compound maintained in a heated fluid state and consisting of
animal, vegetable, or mineral wax (or a mixture of these latter) and sulphurised
oil. The leather under treatment after having remained sufficiently long in the
above named vessel or receptacle to become thoroughly charged or saturated with
the impregnating compound, is finally subjected to the necessary smoothing process
under rollers or equivalent mechanism, to render it in a condition adapted for
immediate use.
The proportions of the several ingredients forming the impregnating compound
must depend, -as will be apparent,-to a great extent upon the description of
leather operated upon, and the particular application or use to which it is to be
put. Similarly also, the modus operandi in certain cases may be varied from that
hereinbefore described, accordingly as the leather may be in the form of skins, or
in pieces.
In the case of very thin leather it will be found more convenient to charge the
same while it is in a heated state with the impregnating compound, by surface
application.
I likewise find in certain cases (according to the nature of the tanning process
to which the leather has been subjected) that the adaptability of. the leather to
undergo the impregnating process hereinbefore referred to and described, may be
facilitated by subjecting the leather-previously to undergoing treatment by said
impregnating process-to the action of certain chemicals; that is to say, I may
immerse the leather in a bath composed of a solution of bi-carbonate of soda and
of sulphate of Soda. Or, I may use the last mentioned element of said solution,
alone.
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
J
The treatment of leather substantially as and with the objects in view herein
described and set forth.
Dated this 14th dow of November 188À