From story
Saltaire - Victorian Model Town, Then and Now
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Alpaca

Titus Salt used the wool from alpacas and combined it with other materials to create new varieties of worsted cloth (wool worsted cloth, wool/cotton and wool/silk worsted cloths already existed). Worsted cloth is what you would typically find today in men’s suits or similar, it’s made from wool or similar, tightly spun and then woven into a cloth that’s smooth enough to be tailored. In Salt’s day it was fashionable for ladies clothing. What most people wanted, but couldn’t afford, was silk. Alpaca made a light, smooth fabric with plenty of lustre like silk but more affordable

© Craig McHugh for Bradford Council