Simple? Yet an invention!

Nail - One of the oldest attaching devices. The cavemen connected parts of their weapons with primitive “nails” - fish bones and thorns from plants. During the Bronze Age, metallic casting and forged nails were in wide use. For thousands of years, nails - sharpened rods with heads - remained of the simplest construction. And only during the past decade, people began to improve the nail in many countries. To keep nails’ mass down, nails are made hollow. Nails partial length of which is a screw. Russian Inventor V. Mazaikov proposed a nail with ridges along the circumference. When such nail penetrates the connected materials it’ll become curved when it’ll reach hard material. And it’ll be very hard to take off this nail - you got very reliable joint.

The diversity of nails includes ones made from wire, which is bent asunder and is nailed in the material. After nailing bended wires on the necessary depth, one of them is bended on the surface, and another part is nailed further. As a result the bottom end of the nail curves, and such joint is very hard to disconnect.

If you will hammer such nail with the furcated end, the shaped ends will curve in opposite sides, and you’ll receive reliable connection.

There are nails with two heads - one above another, such nails can be easily removed from the wooden structure, for example from the wooden sheathing.

Worldwide Company HILTI owns more than 600 hundred patents on different types of nails, and other hold on devices, and different instrumentations for hammering them into different materials. We advise you to visit the HILTI website, or simply to look over the nail department in the nearest Home Deport; you will be surprised with the diversity of nails. Remember about the magic keywords: WHY and HOW!

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