A Practical Treatise On Yarn And Cloth Calculations for Cotton Fabrics
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Cotton ply yarns are indicated by placing the number of threads twisted before the num- bers of the single yarn ; a two ply 40s would be indicated 2-40s, and would be equal to a single 20s. In spun silk, the method is to place the actual size or counts of the ply thread first, and the number of threads used after it. Thus a two ply thread of spun silk, which would equal a 40s, would be composed of two threads of 80s, and would be indicated 40s-2 ; a 30s-3 would be composed of three threads of 9...0s.
Thus the count of a ply thread in spun silk, multiplied by the number of threads twisted, equals the counts of the single threads.
18 Example. What counts of single yarn would be used to make a 30s-3 spun silk ?
30 X 3 r= 90s counts.
Example. What counts of spun silk are equal to a 60s cotton ?
60s counts.
Example. How many yards are contained in 10 lbs. of 20s-2 spun silk?
840 X 20 X 10 = 168000 yards.
Example. How many yards of single yarn are required to make 10 lbs. of 20s-2 spun silk ?
20s-2 = 40s-l Then: 4:0x840X 10 = 336000 yards of single 40s.
What to read after A Practical Treatise On Yarn And Cloth Calculations for Cotton Fabrics?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Yates to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Cotton ply yarns are indicated by placing the number of threads twisted before the num- bers of the single yarn ; a two ply 40s would be indicated 2-40s, and would be equal to a single 20s. In spun silk, the method is to place the actual size or counts of the ply thread first, and the number of threads used after it. Thus a two ply thread of spun silk, which would equal a 40s, would be composed of two threads of 80s, and would be indicated 40s-2 ; a 30s-3 would be composed of three threads of 9...0s.
Thus the count of a ply thread in spun silk, multiplied by the number of threads twisted, equals the counts of the single threads.
18 Example. What counts of single yarn would be used to make a 30s-3 spun silk ?
30 X 3 r= 90s counts.
Example. What counts of spun silk are equal to a 60s cotton ?
60s counts.
Example. How many yards are contained in 10 lbs. of 20s-2 spun silk?
840 X 20 X 10 = 168000 yards.
Example. How many yards of single yarn are required to make 10 lbs. of 20s-2 spun silk ?
20s-2 = 40s-l Then: 4:0x840X 10 = 336000 yards of single 40s.
What to read after A Practical Treatise On Yarn And Cloth Calculations for Cotton Fabrics?
You can find similar books in the "Read Also" column, or choose other free books by Thomas Yates to read onlineMoreLess
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