Chain-link fencing

[1] In the mid-1890s, the American Chain Link Fence Company in Medford, Massachusetts,[2] was the first company in the United States to patent an "exclusive manufacturing process of continuous wire fabric"[3] thanks to a patent by founder Guy Mafera which he first used to make spring beds.

[7] Mafera's patent was updated in 1952, but expired in 1969 and is now used in the production of most chain link fencing.

[8] In the United States, fencing usually comes in 20-foot (6.1 m) or 50-foot (15 m) rolls, which can be joined by "unscrewing" one of the end wires and then "screwing" it back in so that it hooks both pieces.

Mesh length can also vary based on need, with the standard diamond size being 2 inches (5.1 cm).

Top horizontal rails are used on most chain-link fences, although not necessary if the terminal posts are braced correctly.

A metal wire, often galvanized to reduce corrosion, is pulled along a rotating long and flat blade, thus creating a somewhat flattened spiral.

Next, the spiral is pressed flat, and the entire fence is moved up, ready for the next cycle.

An improved version of the weaving machine winds two wires around the blade at once to create a double helix.