It was around 35,000 BCE, when the Homo Sapiens discovered the benefits of the application of rotary tools. Not fully developed, they consisted of a pointed rock being spun between the hands to bore a hole through another material. This rudimentarily led to the birth of Hand Drill, a smooth stick that was sometimes attached to flint point, and was rubbed between the palms. Many ancient civilizations used this. The earliest perforated artifacts, such as bone, ivory, shells and antelers found are from the upper paleolithicera.
One most great advancement in drilling technology, i.e. the Electric Motor led to the invention of the Electric Drill. The credit goes to the Arthur James Amot and William Blanch Brain, who belonged to Melbourne, Australia. They patented the electric drill in 1889. In 1895, the first portable handheld drill was created by brothers, Wilhem & Carl Fein, from Stuttgart Germany. In 1917 the first trigger switch, pistol-grip portable drill was patented by Black & Decker. This was the start of the modern drill era. Over the last century the electric drill has been created to the variety of types, and multiple sizes for an assortment of specific uses.
A variety of hand-powered drills have been employed over the centuries. Here are a few, starting with approximately the oldest:
· Bow Drill
· Brace & Bits
· Hand Drill
· Breast Drill, similar to a Hand Drill, it has a flat chest piece instead of a handle
· Push Drill
· Pin Chuck, it’s a jeweler’s drill
Drills are often used simply as motors to drive a variety of applications, in much the same way that tractors with generic PTO’s are used to power ploughs, mowers, trailers, etc.
· Water pumps
· Nibblers for cutting metal sheet
· Rotary sanding discs
· Rotary polishing discs
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