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Rotary disk plowIn 1896, Clement Hardy was issued a patent for the rotary disk plow (No. 556,972). His patent described a rotary-disk plow constructed with one or more plowing disks arranged diagonally to the line of draft and suitable supported by furrow and landside wheels and a suitable metal or wooden frame. The plow disks were designed to be drawn into the earth by their own action and by the weight of the soil lifted by the disks and carried on their faces and have a cutting action on the bottom of the furrow instead of scraping, thereby enabling much reduction of the machinery's weight that had previously been thought necessary in this class of plows in order to force the disks into the soil and hold them to their work.[Image: top view, showing seat to left of rear wheel.]
Once upon a time Nasa decided to send three astronauts to space for 2 years.
NASA allowed each of them to take 200 pounds of baggage each.
The first astronaut decided to take along his wife, the second decided to take along books to learn how to speak German, while the third astronaut decided to take along cigarettes.
Two years later, when the space shuttle landed, there was a big crowd waiting to welcome them home.
First came the first astronaut and his wife and each of them had a baby in their arms.
Next, out came the second astronaut speaking fluent German.
They both gave their speeches and got a rousing applause.
Suddenly out came the third astronaut with a cigarette in his mouth.
He walked up to the podium and snarled to the crowd and asked, 'Has anyone got a friggin' match?'