In the US it's called a combine, because it combines the actions of reaping and threshing into one. It's also sometimes referred to as a combine harvester.
A planter or a drill. See the related links for examples.
cotton stripper
For grain, they are called "harvesters" or combine harvesters, which is a huge machine that gathers the crop (be it corn, wheat, barley, oats, etc.) and goes through the process in the machine of separating the kernels or seeds from the rest of the plant. What's left over is ejected as chaff, which can be baled for straw. In the old days, threshing machines were used to separate seeds of grain from the chaff.
It is called a cotton gin and is still used today in a modernized form.
If done by hand I believe the term is "picking", however in modern times a machine called a "cotton gin" is used to do this and the process is called "ginning".
It is a type of (mechanical) agricultural machine used to harvest goods.
Rice harvester is a machine used to harvest rice crops. It is used by the farmers a lot.
The machine used for kidney treatment is called as Dialysis Machine.
It is a type of (mechanical) agricultural machine used to harvest goods.
we can harvest grain faster now that we had used this machine
to make condensed oil and to grow more cotton for the next harvest.
Rice harvester is a machine used to harvest rice crops. It is used by the farmers a lot.
Cyrus McCormack developed the reaping machine in 1831. A reaping machine is used to cut crops for harvest after they have ripened.