Year: 1888

page_text: I WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in
the County of Lancaster, and 323, High Holborn, in the County of Middlesex, Civil
Engineer, 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:
Hitherto threads of worsted yarn of various colours have been manufactured by
twisting and doubling together threads previously dyed to their respective shades or
colours. It was impossible to manufacture fancy threads of two colours from raw yarns
twisted or doubled before dyeing, because in the latter process they were both equally
coloured by the dye and therefore received the same shade of colour.
The object of this invention is to obtain in a single dyeing operation, the effect of a
two coloured thread, by the combination of a raw fine cotton thread with a raw worsted
yarn thread.
It is well known that fibrous materials differ in their relative dispositions to take or
absorb colour, and the operation resorted to in order to produce the requisite tint,
depends upon the material it is desired to dye. This combination of two threads of
different materials admits of varied effects being produced, by one or more dyeing
operations. When a twisted or doubled thread of this description is dipped in the
bath intended for dyeing wool, the cotton is not dyed, but its colour remains the same,
whilst when it is dipped in the "cotton "bath the wool may not be dyed at all, or it
may receive a different shade of colour.
For instance, the dyeing of the combined thread in a bath of black dye would produce
a black and white thread; the colour of the cotton can therefore be varied at will by

page_text: dipping it in a bath of the required dye, while the colour of the wool remains unaffected,
the
process required for dyeing wool being generally different from that required for
dyeing cotton.
It is of importance to employ only fine cotton threads in this combination, because
the fine "numbers "
are always uniformly spun and this facilitates the production of
an almost perfectly homogeneous thread.
Wool threads, on the contrary, cannot be spun uniformly throughout, and the result
of this is the formation of thick and thin places in the thread. If woollen threads
variously coloured are twisted or doubled, the thread produced by this combination
presents corresponding irregularities, which are, of course, more or less noticeable in
the woven fabric. Instead of dyeing the combined thread and then weaving it, the
fabric may be first.manufactured from the combined raw white thread, and subsequently
dyed. Also these combined threads may be woven in combination with other
threads.
The difference between the effect produced by the fancy yarn as hitherto
manufactured, and that produced by the yarn made in accordance with this invention
is very striking.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. The method of manufacturing two-colour or fancy yarns, which consists in
doubling or twisting raw fine cotton thread with raw worsted thread, and in then dyeing
the combined thread, whereby the effect of a doubled or twisted two-colour thread is
obtained by one dyeing operation, substantially as described.
2. The method of manufacturing fancy or two-colour fabrics, which consists in
weaving the said fabrics from yarn, produced by twisting or doubling a raw fine cotton
thread and a raw worsted thread, and in dyeing the fabric when woven, whereby one
dyeing operation produces an effect similar to that obtained by weaving the fabric with
a two-colour thread.
3. As new articles of manufacture the fancy or two-colour yarns and fabrics,
substantially as herein described.
1
1000