AppId is over the quota
Wool is one of the oldest existing fibers harvested and used with many wool testing methods used over the years to determine quality and fineness. Trained farmers would bring their sheep to be evaluated or tested based on the fullness of their wool and the health of the sheep. Trained buyers would attempt to categorize the wool into levels based on the desired outcome or use for the wool such as fine garments or rugs.
Two early methods were the American or Blood System and the English or Spinning Count System. As it has been researched, the diameter of the fiber is the best way to gauge the level of wool for the desired end usage. Neither is as accurate as the micron system which is being used today but it was sufficient at the time.
The original sheep that were native to America had very thick coarse wool that was not good for making soft garments. In the 1800's Merino rams from Spain were imported to be crossbred with the native sheep. It was hoped that the crossing of the fine Merino rams would improve the fineness of the fiber in the native sheep. Once this process had begun a grading system was created to help monitor and chart the progress of the pairings and later generations. The American Blood System was established. It was based on the level of Merino blood in the line. The grade or fiber diameter was expressed as fine being pure blood Merino, a medium level which was 3/8 Merino, and braid or very coarse which was less than 1/4 blood Merino. This grading system helped buyers and sellers who were then able to choose the correct grade to be used in the products they wished to make.
Another system was The English or Spinning Count system. This system was a bit more accurate because it was based on an actual sampling of the fiber rather than the bloodline of the sheep. The measurement called spinning count was determined based on the yarn produced from a pound of clean wool. It was still variable because it depended on the spinning equipment being used but was more accurate than depending on the bloodlines. This determination was by processing the hanks of yarn produced. A hank is 560 yards or approximately 512 meters long. The levels of yarn produced ranged from very fine at finer than 80 spins, a medium level would be about 56 spins, and a coarser fiber would be few than 36 spins.
Both systems for wool testing were a good comparison of wool testing for their time.
Whilst the main professional of Alan B. Stable is an animal skin trader, selling such goods as sheep skins, he occasionally sells animal by-products like raw greasy wool. This entails a knowledge of wool testing and the different types of wool, as well as an understanding of the characteristics of a merino fleece.
Hiç yorum yok:
Yorum Gönder