An Improvement in the Manufacture of Double Plush Goods.
Year: 1899

page_text: Date of Application, 16th Aug., 1899-Accepted, 16th Dec., 1899
COMPLETE SPECIFICATION.
An Improvement in the Manufacture of Double Plush Goods.
I, BERNHARD JOSEPH GRENTRUP, of Drensteinfurt, in the Province of West-
phalia, in the Kingdom of Prussia, part of the German Empire, Fabricant, 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 an improvement in the manufacture of double plush
goods of that class commonly known as three-wefts' goods, the improvement
allowing of the main warp threads when put upon the main warp beam, to be
maintained at a uniform tension all along during the weaving process and further
resulting in a great economy in the material used for the pile warps with a
minimum amount of labour.
In order that my invention may be the better understood and in order to
enable others skilled in the art, to practically carry the same into effect, I will
proceed to explain my invention with reference to the annexed drawings which
exemplify an instance of applying the invention to the manufacture of double
plush goods; Fig. 1 of the drawing showing a diagram of the intersection of the
various threads and Fig. 2 showing the corresponding arrangement of the threads
on the beams. Fig. 3 shows diagrammatically the raising of warps for each
successive woof or pick.
In the application of the invention which is illustrated in the annexed drawings,
the warp threads to be united to the body structure of both the top and the bottom
fabric are wound upon the same main warp beam, A, while the pile warp is arranged
upon the pile warp beam, B. In order to render the warp threads 'd, c, e, b, more
conspicuous in the diagram and to differentiate them from one another, they have
been illustrated by distinctive signs while black spots have been used to designate
the pile warps a
Upon the insertion of the first woof thread the main warp threads 6 and the
pile warp threads a are raised, while by the insertion of the second woof thread
the warp thread's c only are raised; the insertion of the third woof again results
in the raising of the warp threads 6 together with the pile threads a.
As a
result of thus alternating the order of threads the connection with the pile thread
at the top fabric is effected. On the other hand the pile thread bends at the
bottom fabric effect their union by means of the warp threads d raised by the
insertion of the first woof along with the pile threads a, and by the raising of the
warp threads e and again of the warp threads d and pile threads a by succeeding
woofs.
The union of the warp threads c and b to the upper tissue and of e and d to the
lower tissue is effected between the union of the bends of the pile threads by
means of three woof threads immediately succeeding each other.
After the first three woofs of the top and bottom fabric, the position of the pile
warp is exchanging in the order of threads as will be apparent from an inspection
of Fig. 3.
When double plush goods are made in the manner just described, all the warp
threads of the main warp are arranged upon a common main warp beam which

page_text: results in the possibility of using but four leaves for the loom. An additional
advantage is obtained by the employment of thread of uniform thickness for the
main warp all of which can now be submitted to the same uniform tension.
Besides, the liability of friction of the threads against each other is greatly
lessened and the watching of the work rendered easier, thereby reducing accidents
to the warp threads to a minimum. This arrangement of the main warp threads
also renders it possible to increase the tension of the pile threads without any
injury to the thread and without any liability of their getting unusually loosened
and thereby effects an economy in material for the pile threads without in any
way interfering with the density of the goods to be manufactured.
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:
1. Improvement in the manufacture of double plush fabrics consisting in the
arrangement of all the warp threads of the main warp upon one common main
warp beam a, the use of only four leaves in connection therewith, whereby a
three weft fabric is obtained and the tension of the pile threads increased while a
uniform tension is given to the warp threads substantially as and for the purpose
set forth.
2. In the manufacture of three weft double plush goods the combination of a
ground fabric showing the common cotton weave, with pile threads being arranged
between the ground warp threads, the said pile threads being secured to the
ground fabric by the woofs or picks of the ground fabric, the pile threads exchang-
ing from the top to the bottom fabric, three consecutive woofs or picks of the
ground fabric being interposed between each detached three weft part of the
pile thread in each fabric, substantially as and for the purpose set forth.
Dated this 1st day of December 1899.
WALTER FOLKMAN,
Agent to Applicant.