The first person
to describe the spiral was the Greek scientist Archimedes (approximately
287 BC-212 BC). The Archimedes spiral is a huge spiral in a wooden
cylinder, used to raise water from one level to another, and irrigate
the field. But the real inventor was not Archimedes himself. He just
described something that already existed. Maybe it was designed by
skilled craftsmen in ancient Egypt for irrigation on both sides of the
Nile.
In the Middle
Ages, carpenters used wooden or metal nails to connect furniture and
wooden structures. In the 16th century, nail workers began to produce
nails with spiral threads. These nails can connect things more firmly.
This is a small step from this type of nail to a screw.
Around 1550 AD,
the first metal nuts and bolts that appeared as fasteners in Europe were
all hand-made on simple wooden lathes.
Screwdrivers
(spins) appeared in London around 1780. Carpenters have found that
tightening screws with a screwdriver can fix things better than hitting
with a hammer, especially when encountering fine-grained screws.
In 1797, Mozley
invented an all-metal precision screw lathe in London. The following
year, Wilkinson made a nut and bolt manufacturing machine in the United
States. Screws were quite popular as fixing parts because at that time a
cheap production method had been found.
In 1936, Henry
M. Philips applied for a patent for the cross recessed nail head screw.
This design makes the screwdriver center automatically and is not easy
to slip off, so it is very popular. Universal nuts and bolts can connect
metal parts together. Therefore, in the 19th century, the wood used to
make machines to build houses could be replaced by metal bolts and nuts.
In the future,
the fastener industry will become more and more formal, and the
threshold for entrepreneurship will be higher and higher. In the future,
there will be some large-scale enterprises in the industry, the number
of small and medium-sized enterprises will be greatly reduced, and the
industry concentration will continue to increase.