What is a hand saw for - how has it evolved over the course of its existence? Review + Video

What is a hand saw for - how has it evolved over the course of its existence? Review + Video The history of an ordinary saw and the facts about it. It is generally accepted that the first common saw appeared even before the history of the annals began. The first objects that can truly be considered the progenitors of the modern saw were made 4,000 years ago.

These were jagged stones that were used to make images on bones or other relatively soft materials (meaning wood and certain types of stone).

As it was before

Stone products were sharpened on the corners of rocks or ready-made pieces were selected.

Even ancient sculptors used similar tools to create statues of gods. The ancient Egyptians, and later the Romans, made saws from metal, bronze, in order to cut stones, and at the same time diamonds and other precious stones served as teeth.

What is a hand saw for - how has it evolved over the course of its existence? Review + Video For the convenience of cutting, they used abrasive materials, which were poured into the cutting site. The teeth of the Egyptian saws were inclined towards the handle, and this made it possible to make a "pull" cut. By the way, such saws are still used in the East.

But the quality of these saws was low enough that they could not compete with the ancient axes. And only many centuries later, the ancient Greeks somehow thought of making a saw by forging, which made it possible to achieve a high level of metal hardness, which means to make the quality of products better, and productivity more. The teeth of these saws were sharper and because of this, with the correct sharpening, they saw the material better.

Power saws

But power saws appeared for the first time in Germany, in 1322. Typically they were used in a sawmill and powered by water.

Such an invention could turn the idea of ​​the Germans about the methods of timber extraction. After that, similar sawmills appeared in England, Scotland and other countries. But there was also a downside to the mechanization of the deforestation process.

Lumberjacks were unable to compete with mechanized sawmills and began to go bankrupt. As a result, when people began to lose their jobs, they began to take revenge on officials, and destroyed their competitors of a mechanical nature.

It is for this reason that the first steam sawmill, which became a real prototype of the future chainsaw, was liquidated in the USA for the indicated reasons.

Band saws

The next stage in the history of the saw is the invention of band saws . They were steel closed belts with teeth, which are located on one edge. A similar tape was pulled over two vertical pulleys. In 1808, this saw design was first patented in England.

Interestingly, when 26 years have passed, a man with the surname Etienne received a patent for a similar saw in France, and a couple of years later B. Baker in the USA. But the band saw became widespread only at the end of the 19th century.This delay was due to the fact that manufacturers were unable to achieve an accurate connection between the ends of the band saws.

The best instruments of this class at that time were made in France, which decided to maintain its leadership in the production of such a product to this day.

Saw on a chain

The chain saw was invented in the first third of the 20th century. But 100 years earlier, German doctor Bernard Hein used chain saws to cut bones. But his invention did not gain popularity due to the large weight of the product and dubious ease of use. This type of saw was recognized only in the 20th century.

The patented inventions of a man named Andreas Stihl - an electric chain saw (1926) and a Stihl brand chainsaw (1929) - became a breakthrough in the history of saws making.

At the same time, professionals associate the name Shtil precisely with the reliability and quality of the tool. The company currently holds an incredible number of patents in the field of mechanical engineering, and the products have taken over a large niche of the tooling market, and are also incredibly popular due to their excellent accuracy and exceptional reliability.

The facts about saws don't end there

What is a hand saw for - how has it evolved over the course of its existence? Review + Video After the war, already in the middle of the 20th century, the effectiveness of chain saws was significantly increased by improving the tool chain and optimizing the workflow. This was achieved by a lumberjack by precisely Joseph Buford Cox. Once, while resting, he observed a beetle larva eating bark, and the insect was able to gnaw its way through a hard tree with unusual ease, and the direction of movement and speed did not depend on the direction of the wood fibers.

When Cox took a closer look at the beetle's jaw, he mimicked its shape in the steel cutters on the chainsaw. Yes, yes, the effect was not long in coming. This form became so successful that the improved tools began to be bought up very actively. Later, Cox decided to create an Oregon firm with his wife, and specialized in the production of chains and tires, which are used in most tools even today.

.