FIG. 382.
If the figures are formed from extra warp or weft, the same principles of development will apply. Any variety of light and shade can be obtained, and bold effects may be produced by twilling, or subdued effects by interweaving the threads more closely and in satin order.
Sizes of Patterns, and Casting Out.—The Jacquard machine most generally used in the cotton trade is a 400’s, which weaves a design made on 400 ends or warp threads in a “repeat.” If the harness is tied up to the 400 neck cords, and the warp drawn through every mail in the harness, the designs made for this loom must either be on 400 ends or on a number of ends which is a measure of 400. Thus a 400’s harness will weave the following sizes of patterns:—
One
pattern to
400,
or
400
end pattern