Improvements in the Method of and Apparatus for Weaving Double: Pile Fabrics with a Figured or Coloured Design.
Year: 1892

page_text: Date of Application, 25th Feb., 1892
Complete Specification Left, 27th Dec., 1892-Accepted, 25th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Method of and Apparatus for Weaving Double:
Pile Fabrics with a Figured or Coloured Design.
We, GEORGE PRIESTLEY and FREDERICK PRIESTLEY, of the firm of George.
Priestley and Co. Mount Street Shed, Leeds Road, Bradford in the County of
York, Manufacturers, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in the method of and apparatus for
weaving double pile fabrics such as carpets, fancy plushes, velvets, and other pile
fabrics having woven or coloured designs in which the whole of the pile warp
threads are not continuously being formed into pile and its object is to provide an
improved means of feeding the pile warp so that only such of the pile warp threads
are let off at a time as the nature of the design requires.
The said improvements consist in the employment of a Jacquard apparatus or
engine in addition to that ordinarily employed to regulate the feed of the pile
warp so arranged that only such of the pile warp. threads as the nature of the
pattern requires are brought into position to be let off by the pile letting off
mechanism.
For this purpose we employ an independent set of harness operated by Jacquard
or other similar mechanism to bring the pile warp threads as they are required in
contact with the pile letting off roller or rollers or the like and to keep them in
contact with such roller or rollers as long as such threads are required to be let off
to supply pile to form the pattern.
The pile warp threads it will be understood are not mounted upon a warp beam
but upon separate bobbins or creels in a similar manner to that employed when
single figured pile fabrics are woven.
Dated this 24th day of February 1892.
:
DRACUP & NUWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in the Method of and Apparatus for Weaving Double
Pile Fabrics with a Figured or Coloured Design.
We, GEORGE PRIESTLEY and FREDERICK PRIESTLEY, of the firm of George
Priestley and Co. Mount Street Shed, Leeds Road, Bradford, in the County of
York, Manufacturers, 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 :-
This invention relates to improvements in the method of and apparatus for
weaving double pile fabrics such as carpets, fancy plushes, velvets and other pile
fabrics having woven or coloured designs in which the whole of the pile warp
threads are not continuously being formed into pile and its object is to provide a
method of feeding the pile warp so that only such of the pile warp threads are
let off at a time as the nature of the design requires.
The said improvements consist in the employment of a Jacquard apparatus or
engine (in addition to that ordinarily employed) to regulate the feed of the pile
warp so arranged that only such of the pile warp threads as the nature of the
pattern requires are brought into position to be let off by the pile letting off
mechanism:

page_text: For this purpose we employ an independent set of harness operated by Jacquard
or other similar mechanism to bring the pile warp threads as they are required
into contact with the pile letting off roller or rollers or the like and to keep them
in contact with such roller or rollers as long as such threads are required to be let
off to supply pile to form the pattern.
The pile warp threads it will be understood are not mounted upon a warp beam
but upon separate bobbins or creels in a similar manner to that employed when
single figured pile fabrics are woven.
In the accompanying drawings
Figure 1, represents a side elevation of such parts of a loom as are necessary to
illustrate the application of our improvements thereto.
Figure 2, is a longitudinal section of the rear portion of the same on a larger
scale with the pile warp shown.
Figure 3, is a plan view of the same without the pile warp.
Figure 4, is a view of a detail hereinafter referred to.
The side frames A of the loom are extended on each side towards the rear by the
continuations B supported at the back by the standards C. Two pile feed rollers D
and D' are employed mounted in bearings E formed in B and are geared together
so as to revolve at the same speed and in the same direction by the spur wheels F
mounted on their arbors and connected by the intermediate stud wheel G. The
pile feed rollers are driven by the spur wheel H fixed on the arbor J of the
roller D engaging the stud wheel K mounted upon the bracket L secured to
the side frame A. The stud wheel K is connected to and driven by the worm
wheel M mounted on the same stud as K and operated by the worm N on the
shaft O driven at the other end from the crank shaft P of the loom by the worm
and worm wheel Q. Any other convenient arrangement may be employed for
driving the feed rollers.
The pile warp represented by the broken lines T and T' in Figure 2 passes from
bobbins or creels arranged at the back of the loom between the guide bars U and
over the bars V and through the reed W and under the roller D' and is connected
to the harness X operated by the Jacquard apparatus A' above. It then passes
under the roller D and over the bars Vt and forward into the loom to be woven.
When the pile warp is held down in the position shown by the broken lines T it
is clear of the feed rollers D and D' and consequently is not fed into the loom but
the Jacquard mechanism is so arranged that such of the pile warp threads that are
required for the formation of the pattern or figure of the fabric are lifted up by
the Jacquard harness against the feed rollers in the position shown by T and
consequently whilst they are held in that position they are continuously fed into the
loom.
The harness X is provided with weights Y at the bottom in the ordinary way
and passes through a comber board Z above supported at each end on the
frames B.
Tension weights a are also hung on each of the warp threads between the
bars U, V, and V, V half the weights being preferably placed between U, V and
the other half between V, V so as to allow them more space. Similar weights are
also hung on the warp between the bars V. For convenience in hanging the
weights on the warp they are preferably made of double wire as shown on a larger
scale Figure 4.
The bars U, V, and V' are mounted in the tee shaped standards U' secured on
each side to the frames B.
Instead of the arrangement shown in the drawings the pile warp may be passed
over the top of the feed rollers and the Jacquard arranged and operated in such a
manner that when the pile warp threads are lifted they are clear of the feed roller
and they are drawn. down by the weights Y in contact with the said rollers when
they require to be fed into the loom.
The double lift Jacquard apparatus A² (Figure 1) for manipulating the pile warp
to form the figure or pattern of the double pile fabric is arranged and operated in

page_text: the ordinary manner but the lifting rods for working it instead of being actuated
by a double crank disc on the tappet shaft B' are connected to and actuated by
the similar double crank disc C₁ mounted on a stud secured to the frame work or
bracket D' connected to the side frame. The disc C¹ has teeth on its periphery
engaging the spur wheel E' on the tappet shaft B₁ and is driven thereby.
The Jacquard apparatus A¹ regulating the feed of the warp is driven in a
similar manner from the other double crank disc C2 and the card cylinder and card
motion may be actuated by a rod F¹ on either side coupling the vibrating arms G²
of the slay motion of A² to the similar arms G¹ of A'.
Any other convenient arrangement of mechanism for actuating the two Jacquards
may be employed.
The Jacquard apparatus employed and particularly that for feeding the pile
warp is of that class in which the harness when once lifted remains up until the
nature of the pattern requires it to be let down such as the apparatus described in
Wilkinson's Specification No. 9,342 of 1890.
The ground or backing of the fabrics is preferably manipulated by healds and
tappets in a similar manner to ordinary looms for weaving double pile fabrics.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:
1. In a loom for weaving double pile fabrics with a figured or coloured design,
regulating or controlling the feed of the pile warp by means of a Jacquard or
engine, substantially as herein shown and described.
2. In a loom for weaving double pile fabrics with a figured or coloured design,
the combination with the feed roller or rollers, of a Jacquard apparatus arranged
to bring such of the pile warp threads as the formation of the figure or design
requires in position to be fed into the loom, substantially as herein shown and
described and illustrated in the accompanying drawings.
Dated this 23rd day of December 1892.
DRACUP & NOWELL,
Bradford, Agents.