Improvements in the Manufacture of Pile Fabrics.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Pile Fabrics.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Bucking-
ham Street, Strand, London, W.C., Patent Agent, do hereby declare the nature
of this invention a communication to me from abroad by the Firm of Gebrüder
Wertheimer, of 10, Rohrteichstrasse, Bielefeld, in the Empire of Germany, Velvet
Manufacturers, to be as follows:-
This invention relates to pile fabrics such as are woven in duplicate that is
to say, face to face and cut to form separate fabrics, and it relates to improved
methods by which the pile warp is tied in each fabric by two picks of weft
and locked in by floating or additional warps.
The pile warp may be carried by one or two leaves.
When one leaf is employed the warp is lifted while two shoots of weft are
passed under it in the upper fabric, and then depressed while two picks of weft
are passed over it in the lower fabric. The ground warp is in two double sets in
each fabric and crosses between the two picks of weft which hold the same loop
of pile warp. The floating or additional warp is also in two double sets for each
fabric and crosses between every pair of picks of weft holding one loop of the pile
warp.
When two leaves are employed for the pile warp, one pile warp is raised while
two picks of weft pass under it in the upper fabric and afterwards the other
pile warp is depressed while two picks of weft pass over it in the lower fabric;
the pile warps then cross each other, that previously locked in the upper fabric
being now depressed to be locked by two picks of weft in the lower fabric while
that previously locked in the lower fabric is raised to be locked by two picks
of weft in the upper fabric. Two sets of ground warp are employed in each fabric
crossing between the two weft picks which hold the same loop of pile warp.
Two sets of floating warp are also employed in each fabric crossing between
every pair of picks of weft holding one, loop of the pile warp.
100
1
1
1000
Improvements in the Manufacture of Pile Fabrics.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Bucking-
ham Street, Strand, W.C., London, Patent Agent, do hereby declare the nature
of this invention a communication to me from abroad by the Firm of Gebrüder
Wertheimer, of 10, Rohrteichstrasse, Bielefeld, in the Empire of Germany,
Velvet Manufacturers, 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 pile fabrics such as are woven in duplicate, that is

page_text: the floating warps.
The great advantages of this invention over all other methods of the manufac-
ture of double pile fabrics generally known by tying in the pile warp by one
pick of weft only are:
1) That the pile loops stand better straight upwards because the ground warps
cross between the two picks holding the same loop.
2) That the cloth can be woven with much less faults in it, because the threads
of the pile warp crossing only after every four picks of weft, instead of every two
picks in the old methods, are not stretched so much and only half as many times
and therefore will not break so often and because the weaver having the
pile warp threads during four picks of weft under his eyes-instead of only
during two picks as in the old methods is able to see more readily a broken pile
thread and mend it immediately so as to avoid a fault in the cloth.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. In the manufacture of double pile fabrics of all kinds the method whereby
each loop of the pile warp is locked by two picks of weft.
2. In the manufacture of double pile fabrics of all kinds the method whereby
each loop of the pile warp is locked by two picks of weft the ground warp
being in double set and crossing between said two picks of weft.
3. In the manufacture of double pile fabrics of all kinds the method whereby
each loop of the pile warp is locked by two picks of weft, the ground warp being
in double set and passing between said two picks of weft and a double set of
floating warp crossing between each pair of pile warp locking picks and the next.
4. The method of manufacturing double pile fabrics with two sets of pile warp,
two double sets of ground warp, and two double sets of floating warp according
to the diagrams herewith.
Dated this 10th dow of Iul 1000