History
The definitive origin of the first hammer drill is a matter of discussion, although if you look at "hammer drills" and "rotary hammers" as separate categories, the origins are clear. Hilti had the first "electro-pneumatic" rotary hammer on the market in 1967 (the Hilti TE 17) and the Milwaukee Electric Tool Corporation states that in 1935, it was selling a lightweight 1/4-inch electric hammer drill (cam-action) .
Read more about this topic: Hammer Drill
Famous quotes containing the word history:
“We know only a single science, the science of history. One can look at history from two sides and divide it into the history of nature and the history of men. However, the two sides are not to be divided off; as long as men exist the history of nature and the history of men are mutually conditioned.”
—Karl Marx (1818–1883)
“History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.... It is not “history” which uses men as a means of achieving—as if it were an individual person—its own ends. History is nothing but the activity of men in pursuit of their ends.”
—Karl Marx (1818–1883)
“Postmodernism is, almost by definition, a transitional cusp of social, cultural, economic and ideological history when modernism’s high-minded principles and preoccupations have ceased to function, but before they have been replaced with a totally new system of values. It represents a moment of suspension before the batteries are recharged for the new millennium, an acknowledgment that preceding the future is a strange and hybrid interregnum that might be called the last gasp of the past.”
—Gilbert Adair, British author, critic. Sunday Times: Books (London, April 21, 1991)