## How to Write Combine in English
Combine is an agricultural machine that harvests grain crops. It is a self-propelled machine that cuts, threshes, and cleans the grain in one operation.
### History of Combine
The first combine was invented in 1835 by Hiram Moore of New York. Moore’s combine was a horse-drawn machine that used a sickle bar to cut the grain and a drum to thresh it. The threshed grain was then cleaned by a fanning mill.
The first self-propelled combine was invented in 1854 by John Augustus Pitts of Illinois. Pitts’ combine was powered by a steam engine and used a cylinder cutter bar to cut the grain. The threshed grain was then cleaned by a fanning mill.
In the early 1900s, combines began to be powered by internal combustion engines. This made them more efficient and easier to operate. Combines also began to be equipped with a variety of attachments, such as headers for different crops and straw spreaders.
Today, combines are essential to the agricultural industry. They are used to harvest a wide variety of crops, including wheat, corn, soybeans, and barley. Combines are also used to harvest forage crops, such as hay and silage.
### How Combine Works
A combine works by cutting the grain and threshing it in one operation. The grain is cut by a cutter bar, which is a series of blades that are mounted on a reel. The reel rotates the cutter bar through the grain, and the blades cut the stalks off at the ground level.
The cut stalks are then fed into the threshing cylinder. The threshing cylinder is a rotating cylinder that is covered with spikes. The spikes beat the stalks against a concave surface, which breaks the kernels of grain out of the stalks.
The threshed grain is then cleaned by a fanning mill. The fanning mill blows away the chaff and other debris, leaving only the clean grain.
The clean grain is then stored in a grain tank. The grain tank is located at the rear of the combine. When the grain tank is full, the combine operator can unload the grain into a truck or trailer.
### Types of Combines
There are a variety of different types of combines available. The most common type is the self-propelled combine. Self-propelled combines are powered by their own engines and can move under their own power.
Other types of combines include:
* **Pull-type combines:** Pull-type combines are towed behind a tractor. They are less expensive than self-propelled combines, but they are also less versatile.
* **Mounted combines:** Mounted combines are mounted on the back of a tractor. They are more expensive than pull-type combines, but they are also more versatile.
* **Row crop combines:** Row crop combines are designed to harvest crops that are planted in rows, such as corn and soybeans.
* **Forage harvesters:** Forage harvesters are designed to harvest forage crops, such as hay and silage.
### How to Choose the Right Combine
When choosing a combine, it is important to consider the following factors:
* **The type of crop you will be harvesting:** Different types of combines are designed to harvest different types of crops. If you will be harvesting a variety of crops, you will need a combine that is versatile enough to handle all of them.
* **The size of your operation:** The size of your operation will determine the size of combine you need. If you have a large operation, you will need a combine that is large enough to harvest your crops in a timely manner.
* **Your budget:** Combines are a significant investment. It is important to set a budget before you start shopping for a combine.
### How to Operate a Combine
Operating a combine is a complex task. It is important to read the operator’s manual before operating a combine. The operator’s manual will provide you with instructions on how to safely and efficiently operate the combine.
Here are some general tips for operating a combine:
* **Start the engine and let it warm up before operating the combine.**
* **Set the combine’s controls according to the manufacturer’s recommendations.**
* **Drive the combine slowly and smoothly.**
* **Be aware of your surroundings and avoid obstacles.**
* **Unload the grain tank when it is full.**
* **Shut off the engine and allow the combine to cool down before servicing it.**
### Safety Tips for Operating a Combine
Operating a combine can be dangerous. It is important to follow these safety tips to avoid injury:
* **Wear appropriate clothing and safety gear when operating a combine.**
* **Be aware of your surroundings and avoid obstacles.**
* **Do not operate a combine if you are tired or under the influence of alcohol or drugs.**
* **Inspect the combine before each use and make sure it is in good working order.**
* **Have a fire extinguisher on hand in case of a fire.**
* **Follow the manufacturer’s instructions for operating the combine.**
### Combine Resources
The following resources can provide you with more information about combines:
* [National Agricultural Statistics Service](https://www.nass.usda.gov/)
* [American Society of Agricultural and Biological Engineers](https://www.asabe.org/)
* [University of California, Davis](https://www.ucdavis.edu/)
* [John Deere](https://www.johndeere.com/)
* [Case IH](https://www.caseih.com/)
* [New Holland](https://www.newholland.com/)
* [Claas](https://www.claas.com/)