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Power Tools: An Evolution of Progress by lipusnaccy

Back in the dawn of civilization, long before power tools, our Neanderthal ancestors fashioned crude tools by chipping away at a rock with another, larger rock.

Needless to say, this means of fashioning a rough axe or knife by pounding one rock while holding another probably accounted for a lot of cave man cursing, as it seems likely that fingers and thumbs were smashed on a frequent, regular basis.

The Egyptians came along and managed to build the pyramids using nothing more than primitive copper tools to both quarry and cut the massive stone. It is widely believed that these huge blocks of stone were made by a kind of drill, sharpened to a point and rotated round and round by twine that was attached to a cross piece and moved in a sawing, back and forth motion.

Can you imagine the incredible amount of work that went into drilling even one little hole this way?

Thank goodness we have power tools today!

Power tools came along toward the end of the 1800s with the invention of the electric motors that made efficient power tools a possibility. The Bosch Company pioneered its first power drill in 1932 and since then; many companies have produced state-of-the-art power tools that have contributed so much to the efficiency, safety and productivity of industry professionals all around the world.

For example, in 1923 an inventor from the United States who went on to found the DeWalt Power Tool Company, Raymond DeWalt, came out with the first ever radial arm saw.

This groundbreaking tool was followed by a succession of innovative power tools in the years since then right on up to the present, when researchers are constantly designing and developing new and improved power tools to make our lives easier.

Get Tools Direct carries a huge selection of the best power tools in existence from such famous brands as Makita, DeWalt, Bosch, Hitachi, Black & Decker, and many more!

You can enjoy the time saving convenience of shopping and buying online 24/7 with super fast delivery right to your door.

Have questions or need help?

Our expert staff of experienced professionals is standing by to provide whatever assistance you may require with power tools or any of our other products. Call us at 1300 334 894 or send us an email to: sales@gettoolsdirect.com.au.

When you want to get the job done quickly, easily and safely---you don’t have to reinvent the wheel! Get Tools Direct has all of the power tools and accessories you need in stock and ready to go!
Back in the dawn of civilization, long before power tools, our Neanderthal ancestors fashioned crude tools by chipping away at a rock with another, larger rock.

Needless to say, this means of fashioning a rough axe or knife by pounding one rock while holding another probably accounted for a lot of cave man cursing, as it seems likely that fingers and thumbs were smashed on a frequent, regular basis.

The Egyptians came along and managed to build the pyramids using nothing more than primitive copper tools to both quarry and cut the massive stone. It is widely believed that these huge blocks of stone were made by a kind of drill, sharpened to a point and rotated round and round by twine that was attached to a cross piece and moved in a sawing, back and forth motion.

Can you imagine the incredible amount of work that went into drilling even one little hole this way?

Thank goodness we have power tools today!

Power tools came along toward the end of the 1800s with the invention of the electric motors that made efficient power tools a possibility. The Bosch Company pioneered its first power drill in 1932 and since then; many companies have produced state-of-the-art power tools that have contributed so much to the efficiency, safety and productivity of industry professionals all around the world.

For example, in 1923 an inventor from the United States who went on to found the DeWalt Power Tool Company, Raymond DeWalt, came out with the first ever radial arm saw.

This groundbreaking tool was followed by a succession of innovative power tools in the years since then right on up to the present, when researchers are constantly designing and developing new and improved power tools to make our lives easier.

Get Tools Direct carries a huge selection of the best power tools in existence from such famous brands as Makita, DeWalt, Bosch, Hitachi, Black & Decker, and many more!

You can enjoy the time saving convenience of shopping and buying online 24/7 with super fast delivery right to your door.

Have questions or need help?

Our expert staff of experienced professionals is standing by to provide whatever assistance you may require with power tools or any of our other products. Call us at 1300 334 894 or send us an email to: sales@gettoolsdirect.com.au.

When you want to get the job done quickly, easily and safely---you don’t have to reinvent the wheel! Get Tools Direct has all of the power tools and accessories you need in stock and ready to go!

Back in the dawn of civilization, long before power tools our Neanderthal ancestors fashioned crude tools by chipping away at a rock with another, larger rock.

Article Source: http://www.earticlesonline.com/Article/Power-Tools--An-Evolution-of-Progress/1130704

What is the Fa-Hien Rock cave in Sri Lanka?

Fa Hien Cave is a cave in the district of Kalutara, Western Province, Sri Lanka, named after the Buddhist monk Faxian (Wade-Giles: Fa Hien). The cave is important for the Late Pleistocene human skeletal remains discovered there in the 1960s and 1980s.

The first human burials in the cave were uncovered in 1968 by Dr Siran U. Deraniyagala (the Sri Lankan government department of archaeology), and he returned with an assistant, W. H. Wijepala, in 1988. The main finds consisted of microliths, the remains of ancient fires, and the remains of plants and human beings. Radiocarbon dating indicated that the cave had been occipied from about 33,000 to 4,750 years ago — from the Late Pleistocene to the Middle Holocene. The human remains from the different levels were taken to the Human Biology Laboratory at Cornell University, where they were studied by Dr Kenneth A. R. Kennedy and one of his graduate students, Joanne L. Zahorsky.

The oldest fragments of human bone came from a young child, two older children, a juvenile, and two adults, and showed evidence of being secondary burials: that is, after death, the bodies were exposed, and after decomposition and the predations of scavengers, the bones were placed in graves. The later remains included those of a young child, about 6,850 years old, and a young woman (nicknamed Kalu-Menika by the archaeologists), about 5,400 years old. Both were also secondary burials.

The discoveries were important to archaeologists and palaeontologists because the earliest of the people buried in Fa Hien Cave lived at the same time as European Cro-Magnon man and other hominids of the Late Pleistocene around the world. Studies of the teeth found in the cave indicate that the population of Sri Lanka ground nuts, seeds, and grains in stone querns in the preparation of food, and that they continued to live as hunter-gatherers until about the 8th century BCE. Sri Lanka has yielded the earliest known microliths, which didn't appear in Europe until the Early Holocene.

Other important Sri Lankan prehistoric sites at which human remains have been found include two other caves – Batadombalena (about 28,500 years old) and Belilena Kitulgala (about 12,000 years old) – and an open-air site, Bellanbandi Palassa (about 6,000 years old).