FIG. 330.
Figs. [329] and [330] will show how two separate cloths, one above the other, can be woven in one loom. The first figure shows one of the face ends only lifted, and a pick being put in the face or top cloth. It will be noticed that both back ends are in this case down along with one of the face ends. The second figure shows both face ends lifted and one of the back ends, whilst a pick is being put in the back cloth.
Two separate cloths of any pattern may be woven by simply lifting the face ends out of the way when a pick is being put in the back cloth.
If a pick is put in the face and back cloth alternately, the cloths will be bound together at both selvedges; but if two picks are put in each cloth alternately, they are only bound at one side. This will be seen from Figs. [331 and 332]. In the former the pick passes from the face cloth to the back cloth at one side, and from the back cloth to the face cloth at the other side of the loom. In [Fig. 332] two picks are put in each cloth in succession, and the cloth will open out to double the width of the loom. The former principle is used for weaving sacks, meat-bags, and seamless pillow-cases. In putting double cloths on point paper it is usual to use different colours or marks for the face and back cloths respectively, and also for lifting the face cloth when weaving in the back one. It is also advisable to always take the dotted squares as warp lifted.
FIGS. 331, 332.
The following directions for double cloth designing will be found useful.
First mark off the face and back ends and picks respectively. Then on the face ends and face picks put the face pattern, and on the back ends and back picks put the back pattern. On every back pick lift every face end. This will make the two cloths separate.
FIG. 333.