Showing posts with label Fibers. Show all posts
Showing posts with label Fibers. Show all posts

Wednesday, February 13, 2013

How does a spinning wheel work?


The spinning wheel spins thread by means of a spindle which twists the drawn fibers of cotton or wool together.

The old spinning wheel, so common to colonial houses, is a simple machine for spinning yarn or thread.  It has a large wheel that is turned by hand or by a fool pedal.

Spinning is the process of twisting fibers into yarn or thread.

To make thread on a spinning wheel, the spinner pulls some of the fibers from a roll of straightened wool or cotton and fastens them to the end of a pulley-driven spindle.

Spinning Wheel
While drawing out the fibers, the spinner turns the wheel, which spins the spindle.  The spindle, in turn, twists the drawn fibers into one continuous thread, which winds around a spool.

Only one thread can be made at a time on a spinning wheel.  After the thread is made, it can be woven into cloth on a machine called a loom.

Today, most spinning and weaving is done in factories.  Modern spinning machines can make hundreds of threads at a time.–Dick Rogers

Monday, January 14, 2013

How Is Cotton Womern Into Cloth?


Cotton
The long cotton fibers are spun into strong treads which are then woven into cloth.

Many of the towels, sheets, shirts and clothing we enjoy using and wearing are made of cotton.  The cotton plant at harvest time looks like it has a cluster of flurry snowballs made of silky white cotton fibers.

After the cotton has been picked it is carried to a machine called a “gin” which separates the fibers from the seeds.

When the cotton arrives at the textile mill, spinning machines spin and twin the loose fibers into strong threads and wind them on bobbins for weaving.

After the thread has been spun, a machine called a “loom” automatically weaves hundreds of threads into cloth in much the same way we might weave a reed basket.

After the cloth has been woven it goes through many other steps in which it is bleached, dyed, and printed.

Chemicals are added to printed cloth to make sure that the colors remain bright. – Dick Rogers

Wednesday, January 27, 2010

Finding Strenght in Nature (1 of 2)

Nature does not cease to amaze scientist. In fact, a number of scientific explorations are geared toward mimicking nature to solve scientific problems. Mathematical models and computer simulations are even formulated to predict how physical and biological systems work.

In all these, scientists use both fundamental and advanced knowledge of the basic sciences (biology, chemistry, and physics) to achieve their goals.

For instance, Buckminster Fuller (to whom the buckyball or buckminsterfullerene was named after) is one inventor who introduced the conception of tensegrity structures. In nature, tensegrity (tensional integrity) is exemplified by a spiderweb.

Just imagine how formidable these webs are to a spider’s prey. No amount of wriggling an kicking can, free the poor prey from becoming dinner to the crafty spider. In a way, spiders are engineers, because they construct their webs with such precision—though these animals don’t have to study tension and compression forces in building their webs to withstand mechanical forces.Today, we see and recognized tensegrity structures in toys, machines, and even among molecules. What is so amazing about these structures is that both stability and resiliency are borne out of the structures’ internal balance. The strength of the structure lies in the collective effort of the fibers or segments that make up the entire unit.