When was the first time screws were used in ancient China

Screws are a product of the industrial age, and in ancient China they were fixed with tools such as wedges, or by processes such as riveting or mortising. The introduction of screws was at the same time as the introduction of machines, around the time of the foreign affairs movement.

Riveting refers to the method of joining two boards or objects of little thickness together by drilling holes in their parts and placing rivets in them, which are riveted with a rivet gun.

Tenon and mortise is the basic way of combining classical and modern furniture in China, and it is also the main way of combining modern frame furniture. Mortise and tenon joint is two pieces of material one to make a tenon, one to make a mortise and tenon hole, the two through to together, by the friction of the material will be two pieces of material fixed together. Mortise and tenon is a common technique used in traditional Chinese architecture, and is the crystallization of the wisdom of the ancestors.

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p>History of the Screw

The first person to describe the screw was the Greek scientist Archimedes (c. 287 BC - 212 BC). The Archimedean screw was a huge helix in a wooden cylinder that was used to lift water from one level to another to irrigate fields. The real inventor was not Archimedes himself.

During the Middle Ages, carpenters used dowels or metal nails to join furniture and wood-framed buildings together, and in the 16th century, nail makers began to produce nails with a helix that held things together more securely. That was a small step from such nails to screws.

The first metal nuts and bolts that appeared as fasteners in Europe around 1550 A.D. were made by hand on crude wooden lathes. Screwdrivers (rotary chisels) appeared in London around 1780. Carpenters found that screwing screws with a screwdriver held things in place better than hammering them, especially when encountering fine-grained screws.

Baidu Encyclopedia - Screws

Baidu Encyclopedia - Mortise and Tenon Joints

Baidu Encyclopedia - Riveting