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A Brief History Of The Invention Of Screws

A brief history of the Invention of screws:

The first man to describe the helix was the Greek scientist Archimedes (about 287 BC-BC 212). The Archimedes Spiral is a huge spiral in a wooden cylinder that is used to raise water from one level to another and irrigate fields. The real creator may not be Archimedes himself. Maybe he's just describing something that's already there. Perhaps ancient Egyptian craftsmen designed it to irrigate on both sides of the river.

In the Middle Ages, carpenters used wooden nails or metal nails to connect furniture to wooden structures. In 16th century, the nail-making workers began to produce a spiral of nails that could be more firmly linked. It's a small step from this kind of nails to screws.

Around the year 1550, the first European to appear as fasteners of metal nuts and bolts, are in the humble wooden lathe made of craft. The screwdriver was at the mercy of London in 1780. The Carpenters found that using a screwdriver to tighten the screws was better than hammering with a hammer, and that it was especially true when a fine-grained screw was used.

1797, Maudsley in London to create a all-metal fine screw lathe. The following year, was made a nut and bolt making machine in the United States. Both types of machines can take place with common nuts and bolts. Screws are properly used as a fixture, because at that time a cheap method of production has been found.

1936, Henry · M K Philips applied for a patent for the screws of the cross recessed nails, which marked a significant advance in the screw base operation. Unlike the traditional slotted screw head screws, the cross recessed screw head of the slotted screws is marginal. This design makes the screwdriver active in the center, not easy to slip off, so very popular. General-purpose nuts and bolts can connect metal pieces together, so by 19th century, the wood that made the machine to create the house was replaced with metal bolts and nuts.